addresses.py

@@ -95,6 +95,12 @@ def calculateInventoryHash(data):
     return sha2.digest()[0:32]
 
 def encodeAddress(version,stream,ripe):
+    if version >= 2:
+        if ripe[:2] == '\x00\x00':
+            ripe = ripe[2:]
+        elif ripe[:1] == '\x00':
+            ripe = ripe[1:]
+    print 'within encodeAddress, length of ripe is:', len(ripe)
     a = encodeVarint(version) + encodeVarint(stream) + ripe
     sha = hashlib.new('sha512')
     sha.update(a)
@@ -162,15 +168,30 @@ def decodeAddress(address):
     #print 'addressVersionNumber', addressVersionNumber
     #print 'bytesUsedByVersionNumber', bytesUsedByVersionNumber
 
-    if addressVersionNumber != 1:
+    if addressVersionNumber > 2:
-        print 'cannot decode version address version numbers this high'
+        print 'cannot decode address version numbers this high'
+        status = 'versiontoohigh'
+        return status,0,0,0
+    elif addressVersionNumber == 0:
+        print 'cannot decode address version numbers of zero.'
         status = 'versiontoohigh'
         return status,0,0,0
 
-    streamNumber, bytesUsedByStreamNumber = decodeVarint(data[bytesUsedByVersionNumber:10+bytesUsedByVersionNumber])
+    streamNumber, bytesUsedByStreamNumber = decodeVarint(data[bytesUsedByVersionNumber:])
     #print streamNumber
     status = 'success'
+    if addressVersionNumber == 1:
         return status,addressVersionNumber,streamNumber,data[-24:-4]
+    elif addressVersionNumber == 2:
+        if len(data[bytesUsedByVersionNumber+bytesUsedByStreamNumber:-4]) == 19:
+            print 'within decode address, lenth I think is 19'
+            return status,addressVersionNumber,streamNumber,'\x00'+data[bytesUsedByVersionNumber+bytesUsedByStreamNumber:-4]
+        elif len(data[bytesUsedByVersionNumber+bytesUsedByStreamNumber:-4]) == 20:
+            print 'within decode address, lenth I think is 20'
+            return status,addressVersionNumber,streamNumber,data[bytesUsedByVersionNumber+bytesUsedByStreamNumber:-4]
+        elif len(data[bytesUsedByVersionNumber+bytesUsedByStreamNumber:-4]) == 18:
+            print 'within decode address, lenth I think is 18'
+            return status,addressVersionNumber,streamNumber,'\x00\x00'+data[bytesUsedByVersionNumber+bytesUsedByStreamNumber:-4]
 
 def addBMIfNotPresent(address):
     if address[:3] != 'BM-':

bitmessagemain.py

@@ -48,6 +48,11 @@ from time import strftime, localtime
 import os
 import string
 import socks
+import pyelliptic
+from pyelliptic import highlevelcrypto
+from pyelliptic.openssl import OpenSSL
+import ctypes
+from pyelliptic import arithmetic
 
 #For each stream to which we connect, one outgoingSynSender thread will exist and will create 8 connections with peers.
 class outgoingSynSender(QThread):
@@ -64,7 +69,7 @@ class outgoingSynSender(QThread):
         time.sleep(1)
         resetTime = int(time.time()) #used below to clear out the alreadyAttemptedConnectionsList periodically so that we will retry connecting to hosts to which we have already tried to connect.
         while True:
-            #time.sleep(999999)#I'm using this to prevent connections for testing.
+            time.sleep(999999)#I'm using this to prevent connections for testing.
             if len(self.selfInitiatedConnectionList) < 8: #maximum number of outgoing connections = 8
                 random.seed()
                 HOST, = random.sample(knownNodes[self.streamNumber],  1)
@@ -2084,11 +2089,84 @@ class addressGenerator(QThread):
     def __init__(self, parent = None):
         QThread.__init__(self, parent)
 
-    def setup(self,streamNumber,label):
+    def setup(self,addressVersionNumber,streamNumber,label="(no label)",numberOfAddressesToMake=1,deterministicPassphrase="",eighteenByteRipe=False):
+        self.addressVersionNumber = addressVersionNumber
         self.streamNumber = streamNumber
         self.label = label
+        self.numberOfAddressesToMake = numberOfAddressesToMake
+        self.deterministicPassphrase = deterministicPassphrase
+        self.eighteenByteRipe = eighteenByteRipe
 
     def run(self):
+        if self.addressVersionNumber == 2:
+
+            if self.deterministicPassphrase == "":
+                statusbar = 'Generating one new address'
+                self.emit(SIGNAL("updateStatusBar(PyQt_PyObject)"),statusbar)
+                #This next section is a little bit strange. We're going to generate keys over and over until we
+                #find one that starts with either \x00 or \x00\x00. Then when we pack them into a Bitmessage address,
+                #we won't store the \x00 or \x00\x00 bytes thus making the address shorter. 
+                while True:
+                    potentialPrivSigningKey = OpenSSL.rand(32)
+                    potentialPrivEncryptionKey = OpenSSL.rand(32)
+                    potentialPubSigningKey = self.pointMult(potentialPrivSigningKey)
+                    potentialPubEncryptionKey = self.pointMult(potentialPrivEncryptionKey)
+                    #print 'potentialPubSigningKey', potentialPubSigningKey.encode('hex')
+                    #print 'potentialPubEncryptionKey', potentialPubEncryptionKey.encode('hex')
+
+                    ripe = hashlib.new('ripemd160')
+                    sha = hashlib.new('sha512')
+                    sha.update(potentialPubSigningKey+potentialPubEncryptionKey)
+                    ripe.update(sha.digest())
+                    #print 'potential ripe.digest', ripe.digest().encode('hex')
+                    if self.eighteenByteRipe:
+                        if ripe.digest()[:2] == '\x00\x00':
+                            break
+                    else:
+                        if ripe.digest()[:1] == '\x00':
+                            break
+                print 'ripe.digest', ripe.digest().encode('hex')
+                if ripe.digest()[:2] == '\x00\x00':
+                    address = encodeAddress(2,self.streamNumber,ripe.digest()[2:])
+                    print 'address has 18 byte ripe:', address
+                elif ripe.digest()[:1] == '\x00':
+                    address = encodeAddress(2,self.streamNumber,ripe.digest()[1:])
+                    print 'address has 19 byte ripe:', address
+                self.emit(SIGNAL("updateStatusBar(PyQt_PyObject)"),'Finished generating address. Writing to keys.dat')
+                status,addressVersionNumber,streamNumber,hash = decodeAddress(address)
+                print status,addressVersionNumber,streamNumber,hash.encode('hex')
+
+                #An excellent way for us to store our keys is in Wallet Import Format. Let us convert now.
+                #https://en.bitcoin.it/wiki/Wallet_import_format
+                privSigningKey = '\x80'+potentialPrivSigningKey
+                checksum = hashlib.sha256(hashlib.sha256(privSigningKey).digest()).digest()[0:4]
+                privSigningKeyWIF = arithmetic.changebase(privSigningKey + checksum,256,58)
+                print 'privSigningKeyWIF',privSigningKeyWIF
+
+                privEncryptionKey = '\x80'+potentialPrivEncryptionKey
+                checksum = hashlib.sha256(hashlib.sha256(privEncryptionKey).digest()).digest()[0:4]
+                privEncryptionKeyWIF = arithmetic.changebase(privEncryptionKey + checksum,256,58)
+                print 'privEncryptionKeyWIF',privEncryptionKeyWIF
+
+                config.add_section(address)
+                print 'self.label', self.label
+                config.set(address,'label',self.label)
+                config.set(address,'enabled','true')
+                config.set(address,'decoy','false')
+                config.set(address,'privSigningKey',privSigningKeyWIF)
+                config.set(address,'privEncryptionKey',privEncryptionKeyWIF)
+                with open(appdata + 'keys.dat', 'wb') as configfile:
+                    config.write(configfile)
+
+                self.emit(SIGNAL("updateStatusBar(PyQt_PyObject)"),'Done generating address')
+                self.emit(SIGNAL("writeNewAddressToTable(PyQt_PyObject,PyQt_PyObject,PyQt_PyObject)"),self.label,address,str(self.streamNumber))
+
+
+            else: #There is something in the deterministicPassphrase variable thus we are going to do this deterministically.
+                statusbar = 'Generating '+numberOfAddressesToMake + ' new addresses.'
+                self.emit(SIGNAL("updateStatusBar(PyQt_PyObject)"),statusbar)
+
+        elif self.addressVersionNumber == 1:
             statusbar = 'Generating new ' + str(config.getint('bitmessagesettings', 'bitstrength')) + ' bit RSA key. This takes a minute on average. If you want to generate multiple addresses now, you can; they will queue.'
             self.emit(SIGNAL("updateStatusBar(PyQt_PyObject)"),statusbar)
             (pubkey, privkey) = rsa.newkeys(config.getint('bitmessagesettings', 'bitstrength'))
@@ -2121,6 +2199,41 @@ class addressGenerator(QThread):
             self.emit(SIGNAL("updateStatusBar(PyQt_PyObject)"),'Done generating address')
             self.emit(SIGNAL("writeNewAddressToTable(PyQt_PyObject,PyQt_PyObject,PyQt_PyObject)"),self.label,address,str(self.streamNumber))
     
+    def pointMult(self,secret):
+        #passphrase += 'a'
+        #secret = hashlib.sha256(passphrase.encode('utf8')).digest()
+        #if secret starts with too many FF's, continue
+        ctx = OpenSSL.BN_CTX_new()
+        #secret = OpenSSL.rand(32)
+        k = OpenSSL.EC_KEY_new_by_curve_name(OpenSSL.get_curve('secp256k1'))
+        priv_key = OpenSSL.BN_bin2bn(secret, 32, 0)
+        group = OpenSSL.EC_KEY_get0_group(k)
+        pub_key = OpenSSL.EC_POINT_new(group)
+
+        OpenSSL.EC_POINT_mul(group, pub_key, priv_key, None, None, ctx)
+        OpenSSL.EC_KEY_set_private_key(k, priv_key)
+        OpenSSL.EC_KEY_set_public_key(k, pub_key)
+        #print 'priv_key',priv_key
+        #print 'pub_key',pub_key
+
+        size = OpenSSL.i2o_ECPublicKey(k, 0)
+        mb = ctypes.create_string_buffer(size)
+        OpenSSL.i2o_ECPublicKey(k, ctypes.byref(ctypes.pointer(mb)))
+        #print 'mb.raw', mb.raw.encode('hex'), 'length:', len(mb.raw)
+        #print 'mb.raw', mb.raw, 'length:', len(mb.raw)
+
+
+
+
+        #ripe = hashlib.new('ripemd160')
+        #sha = hashlib.new('sha512')
+        #sha.update(mb.raw)
+        #ripe.update(sha.digest())
+        OpenSSL.EC_POINT_free(pub_key)
+        OpenSSL.BN_CTX_free(ctx)
+        OpenSSL.BN_free(priv_key)
+        OpenSSL.EC_KEY_free(k)
+        return mb.raw
 
 class iconGlossaryDialog(QtGui.QDialog):
     def __init__(self,parent):
@@ -2231,8 +2344,8 @@ class NewSubscriptionDialog(QtGui.QDialog):
 class NewAddressDialog(QtGui.QDialog):
     def __init__(self, parent):
         QtGui.QWidget.__init__(self, parent)
-        self.ui = Ui_NewAddressDialog() #Jonathan changed this line
+        self.ui = Ui_NewAddressDialog() 
-        self.ui.setupUi(self) #Jonathan left this line alone
+        self.ui.setupUi(self) 
         self.parent = parent
         row = 1
         while self.parent.ui.tableWidgetYourIdentities.item(row-1,1):
@@ -2240,8 +2353,8 @@ class NewAddressDialog(QtGui.QDialog):
             #print self.parent.ui.tableWidgetYourIdentities.item(row-1,1).text()
             self.ui.comboBoxExisting.addItem(self.parent.ui.tableWidgetYourIdentities.item(row-1,1).text())
             row += 1
-        #QtGui.QWidget.resize(self,QtGui.QWidget.sizeHint(self))
+        self.ui.groupBoxDeterministic.setHidden(True)
-        
+        QtGui.QWidget.resize(self,QtGui.QWidget.sizeHint(self))
 
 
 class MyForm(QtGui.QMainWindow):
@@ -2541,7 +2654,7 @@ class MyForm(QtGui.QMainWindow):
         queryreturn = sqlReturnQueue.get()
         for row in queryreturn:
             ackdata,  = row
-            print 'Watching for ackdata', repr(ackdata)
+            print 'Watching for ackdata', ackdata.encode('hex')
             ackdataForWhichImWatching[ackdata] = 0
 
         QtCore.QObject.connect(self.ui.tableWidgetYourIdentities, QtCore.SIGNAL("itemChanged(QTableWidgetItem *)"), self.tableWidgetYourIdentitiesItemChanged)
@@ -3225,31 +3338,36 @@ class MyForm(QtGui.QMainWindow):
 
 
     def click_NewAddressDialog(self):
-        print 'click_buttondialog'
         self.dialog = NewAddressDialog(self)
-
         # For Modal dialogs
         if self.dialog.exec_():
-            self.dialog.ui.buttonBox.enabled = False
+            #self.dialog.ui.buttonBox.enabled = False
+            if self.dialog.ui.radioButtonRandomAddress.isChecked():
                 if self.dialog.ui.radioButtonMostAvailable.isChecked():
-                #self.generateAndStoreAnAddress(1)
                     streamNumberForAddress = 1
-
-
                 else:
                     #User selected 'Use the same stream as an existing address.'
                     streamNumberForAddress = addressStream(self.dialog.ui.comboBoxExisting.currentText())
 
                 self.addressGenerator = addressGenerator()
-            self.addressGenerator.setup(streamNumberForAddress,str(self.dialog.ui.newaddresslabel.text().toUtf8()))
+                self.addressGenerator.setup(2,streamNumberForAddress,str(self.dialog.ui.newaddresslabel.text().toUtf8()),1,"",self.dialog.ui.checkBoxEighteenByteRipe.isChecked())
-
                 QtCore.QObject.connect(self.addressGenerator, SIGNAL("writeNewAddressToTable(PyQt_PyObject,PyQt_PyObject,PyQt_PyObject)"), self.writeNewAddressToTable)
                 QtCore.QObject.connect(self.addressGenerator, QtCore.SIGNAL("updateStatusBar(PyQt_PyObject)"), self.updateStatusBar)
-
-
                 self.addressGenerator.start()
             else:
-            print 'rejected'
+                if self.dialog.ui.lineEditPassphrase.text() != self.dialog.ui.lineEditPassphraseAgain.text():
+                    QMessageBox.about(self, "Passphrase mismatch", "The passphrase you entered twice doesn\'t match. Try again.")
+                elif self.dialog.ui.lineEditPassphrase.text() == "":
+                    QMessageBox.about(self, "Choose a passphrase", "You really do need a passphrase.")
+                else:
+                    streamNumberForAddress = 1 #this will eventually have to be replaced by logic to determine the most available stream number.
+                    self.addressGenerator = addressGenerator()
+                    self.addressGenerator.setup(2,streamNumberForAddress,"unused address",self.dialog.ui.spinBoxNumberOfAddressesToMake.value(),self.dialog.ui.lineEditPassphrase.text().toUtf8(),self.dialog.ui.checkBoxEighteenByteRipe.isChecked())
+                    QtCore.QObject.connect(self.addressGenerator, SIGNAL("writeNewAddressToTable(PyQt_PyObject,PyQt_PyObject,PyQt_PyObject)"), self.writeNewAddressToTable)
+                    QtCore.QObject.connect(self.addressGenerator, QtCore.SIGNAL("updateStatusBar(PyQt_PyObject)"), self.updateStatusBar)
+                    self.addressGenerator.start()
+        else:
+            print 'new address dialog box rejected'
 
     def closeEvent(self, event):
         broadcastToSendDataQueues((0, 'shutdown', 'all'))

newaddressdialog.py

@@ -2,7 +2,7 @@
 
 # Form implementation generated from reading ui file 'newaddressdialog.ui'
 #
-# Created: Wed Dec 19 15:55:07 2012
+# Created: Tue Jan 15 15:21:33 2013
 #      by: PyQt4 UI code generator 4.9.4
 #
 # WARNING! All changes made in this file will be lost!
@@ -17,57 +17,154 @@ except AttributeError:
 class Ui_NewAddressDialog(object):
     def setupUi(self, NewAddressDialog):
         NewAddressDialog.setObjectName(_fromUtf8("NewAddressDialog"))
-        NewAddressDialog.resize(383, 258)
+        NewAddressDialog.resize(723, 704)
-        self.buttonBox = QtGui.QDialogButtonBox(NewAddressDialog)
+        self.formLayout = QtGui.QFormLayout(NewAddressDialog)
-        self.buttonBox.setGeometry(QtCore.QRect(160, 220, 201, 32))
+        self.formLayout.setFieldGrowthPolicy(QtGui.QFormLayout.AllNonFixedFieldsGrow)
-        self.buttonBox.setOrientation(QtCore.Qt.Horizontal)
+        self.formLayout.setObjectName(_fromUtf8("formLayout"))
-        self.buttonBox.setStandardButtons(QtGui.QDialogButtonBox.Cancel|QtGui.QDialogButtonBox.Ok)
-        self.buttonBox.setObjectName(_fromUtf8("buttonBox"))
         self.label = QtGui.QLabel(NewAddressDialog)
-        self.label.setGeometry(QtCore.QRect(10, 0, 361, 41))
         self.label.setAlignment(QtCore.Qt.AlignBottom|QtCore.Qt.AlignLeading|QtCore.Qt.AlignLeft)
         self.label.setWordWrap(True)
         self.label.setObjectName(_fromUtf8("label"))
-        self.label_2 = QtGui.QLabel(NewAddressDialog)
+        self.formLayout.setWidget(0, QtGui.QFormLayout.SpanningRole, self.label)
-        self.label_2.setGeometry(QtCore.QRect(20, 50, 301, 20))
+        self.label_5 = QtGui.QLabel(NewAddressDialog)
+        self.label_5.setWordWrap(True)
+        self.label_5.setObjectName(_fromUtf8("label_5"))
+        self.formLayout.setWidget(2, QtGui.QFormLayout.SpanningRole, self.label_5)
+        self.line = QtGui.QFrame(NewAddressDialog)
+        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Preferred, QtGui.QSizePolicy.Fixed)
+        sizePolicy.setHorizontalStretch(0)
+        sizePolicy.setVerticalStretch(0)
+        sizePolicy.setHeightForWidth(self.line.sizePolicy().hasHeightForWidth())
+        self.line.setSizePolicy(sizePolicy)
+        self.line.setMinimumSize(QtCore.QSize(100, 2))
+        self.line.setFrameShape(QtGui.QFrame.HLine)
+        self.line.setFrameShadow(QtGui.QFrame.Sunken)
+        self.line.setObjectName(_fromUtf8("line"))
+        self.formLayout.setWidget(4, QtGui.QFormLayout.SpanningRole, self.line)
+        self.radioButtonRandomAddress = QtGui.QRadioButton(NewAddressDialog)
+        self.radioButtonRandomAddress.setChecked(True)
+        self.radioButtonRandomAddress.setObjectName(_fromUtf8("radioButtonRandomAddress"))
+        self.formLayout.setWidget(5, QtGui.QFormLayout.SpanningRole, self.radioButtonRandomAddress)
+        self.radioButtonDeterministicAddress = QtGui.QRadioButton(NewAddressDialog)
+        self.radioButtonDeterministicAddress.setObjectName(_fromUtf8("radioButtonDeterministicAddress"))
+        self.formLayout.setWidget(6, QtGui.QFormLayout.LabelRole, self.radioButtonDeterministicAddress)
+        self.checkBoxEighteenByteRipe = QtGui.QCheckBox(NewAddressDialog)
+        self.checkBoxEighteenByteRipe.setObjectName(_fromUtf8("checkBoxEighteenByteRipe"))
+        self.formLayout.setWidget(9, QtGui.QFormLayout.SpanningRole, self.checkBoxEighteenByteRipe)
+        self.groupBoxDeterministic = QtGui.QGroupBox(NewAddressDialog)
+        self.groupBoxDeterministic.setObjectName(_fromUtf8("groupBoxDeterministic"))
+        self.gridLayout = QtGui.QGridLayout(self.groupBoxDeterministic)
+        self.gridLayout.setObjectName(_fromUtf8("gridLayout"))
+        self.label_6 = QtGui.QLabel(self.groupBoxDeterministic)
+        self.label_6.setObjectName(_fromUtf8("label_6"))
+        self.gridLayout.addWidget(self.label_6, 0, 0, 1, 4)
+        self.lineEditPassphrase = QtGui.QLineEdit(self.groupBoxDeterministic)
+        self.lineEditPassphrase.setInputMethodHints(QtCore.Qt.ImhHiddenText|QtCore.Qt.ImhNoAutoUppercase|QtCore.Qt.ImhNoPredictiveText)
+        self.lineEditPassphrase.setEchoMode(QtGui.QLineEdit.Password)
+        self.lineEditPassphrase.setObjectName(_fromUtf8("lineEditPassphrase"))
+        self.gridLayout.addWidget(self.lineEditPassphrase, 1, 0, 1, 7)
+        self.label_7 = QtGui.QLabel(self.groupBoxDeterministic)
+        self.label_7.setObjectName(_fromUtf8("label_7"))
+        self.gridLayout.addWidget(self.label_7, 2, 0, 1, 4)
+        self.lineEditPassphraseAgain = QtGui.QLineEdit(self.groupBoxDeterministic)
+        self.lineEditPassphraseAgain.setEchoMode(QtGui.QLineEdit.Password)
+        self.lineEditPassphraseAgain.setObjectName(_fromUtf8("lineEditPassphraseAgain"))
+        self.gridLayout.addWidget(self.lineEditPassphraseAgain, 3, 0, 1, 7)
+        self.label_8 = QtGui.QLabel(self.groupBoxDeterministic)
+        self.label_8.setObjectName(_fromUtf8("label_8"))
+        self.gridLayout.addWidget(self.label_8, 4, 0, 1, 7)
+        self.label_9 = QtGui.QLabel(self.groupBoxDeterministic)
+        self.label_9.setObjectName(_fromUtf8("label_9"))
+        self.gridLayout.addWidget(self.label_9, 5, 0, 1, 1)
+        spacerItem = QtGui.QSpacerItem(73, 20, QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Minimum)
+        self.gridLayout.addItem(spacerItem, 5, 1, 1, 1)
+        self.label_10 = QtGui.QLabel(self.groupBoxDeterministic)
+        self.label_10.setObjectName(_fromUtf8("label_10"))
+        self.gridLayout.addWidget(self.label_10, 5, 3, 1, 1)
+        spacerItem1 = QtGui.QSpacerItem(42, 20, QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Minimum)
+        self.gridLayout.addItem(spacerItem1, 5, 4, 1, 2)
+        self.label_11 = QtGui.QLabel(self.groupBoxDeterministic)
+        self.label_11.setObjectName(_fromUtf8("label_11"))
+        self.gridLayout.addWidget(self.label_11, 6, 0, 1, 5)
+        self.spinBoxNumberOfAddressesToMake = QtGui.QSpinBox(self.groupBoxDeterministic)
+        self.spinBoxNumberOfAddressesToMake.setMinimum(1)
+        self.spinBoxNumberOfAddressesToMake.setProperty("value", 8)
+        self.spinBoxNumberOfAddressesToMake.setObjectName(_fromUtf8("spinBoxNumberOfAddressesToMake"))
+        self.gridLayout.addWidget(self.spinBoxNumberOfAddressesToMake, 6, 5, 1, 2)
+        self.formLayout.setWidget(8, QtGui.QFormLayout.LabelRole, self.groupBoxDeterministic)
+        self.groupBox = QtGui.QGroupBox(NewAddressDialog)
+        self.groupBox.setObjectName(_fromUtf8("groupBox"))
+        self.gridLayout_2 = QtGui.QGridLayout(self.groupBox)
+        self.gridLayout_2.setObjectName(_fromUtf8("gridLayout_2"))
+        self.label_2 = QtGui.QLabel(self.groupBox)
         self.label_2.setObjectName(_fromUtf8("label_2"))
-        self.newaddresslabel = QtGui.QLineEdit(NewAddressDialog)
+        self.gridLayout_2.addWidget(self.label_2, 0, 0, 1, 2)
-        self.newaddresslabel.setGeometry(QtCore.QRect(20, 70, 351, 20))
+        self.newaddresslabel = QtGui.QLineEdit(self.groupBox)
         self.newaddresslabel.setObjectName(_fromUtf8("newaddresslabel"))
-        self.radioButtonMostAvailable = QtGui.QRadioButton(NewAddressDialog)
+        self.gridLayout_2.addWidget(self.newaddresslabel, 1, 0, 1, 2)
-        self.radioButtonMostAvailable.setGeometry(QtCore.QRect(20, 110, 401, 16))
+        self.radioButtonMostAvailable = QtGui.QRadioButton(self.groupBox)
-        self.radioButtonMostAvailable.setChecked(True)
+        self.radioButtonMostAvailable.setChecked(False)
         self.radioButtonMostAvailable.setObjectName(_fromUtf8("radioButtonMostAvailable"))
-        self.radioButtonExisting = QtGui.QRadioButton(NewAddressDialog)
+        self.gridLayout_2.addWidget(self.radioButtonMostAvailable, 2, 0, 1, 2)
-        self.radioButtonExisting.setGeometry(QtCore.QRect(20, 150, 351, 18))
+        self.label_3 = QtGui.QLabel(self.groupBox)
-        self.radioButtonExisting.setChecked(False)
-        self.radioButtonExisting.setObjectName(_fromUtf8("radioButtonExisting"))
-        self.label_3 = QtGui.QLabel(NewAddressDialog)
-        self.label_3.setGeometry(QtCore.QRect(35, 127, 351, 20))
         self.label_3.setAlignment(QtCore.Qt.AlignLeading|QtCore.Qt.AlignLeft|QtCore.Qt.AlignTop)
         self.label_3.setObjectName(_fromUtf8("label_3"))
-        self.label_4 = QtGui.QLabel(NewAddressDialog)
+        self.gridLayout_2.addWidget(self.label_3, 3, 1, 1, 1)
-        self.label_4.setGeometry(QtCore.QRect(37, 167, 351, 21))
+        self.radioButtonExisting = QtGui.QRadioButton(self.groupBox)
+        self.radioButtonExisting.setChecked(False)
+        self.radioButtonExisting.setObjectName(_fromUtf8("radioButtonExisting"))
+        self.gridLayout_2.addWidget(self.radioButtonExisting, 4, 0, 1, 2)
+        self.label_4 = QtGui.QLabel(self.groupBox)
         self.label_4.setAlignment(QtCore.Qt.AlignLeading|QtCore.Qt.AlignLeft|QtCore.Qt.AlignTop)
         self.label_4.setObjectName(_fromUtf8("label_4"))
-        self.comboBoxExisting = QtGui.QComboBox(NewAddressDialog)
+        self.gridLayout_2.addWidget(self.label_4, 5, 1, 1, 1)
+        spacerItem2 = QtGui.QSpacerItem(13, 20, QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Minimum)
+        self.gridLayout_2.addItem(spacerItem2, 6, 0, 1, 1)
+        self.comboBoxExisting = QtGui.QComboBox(self.groupBox)
         self.comboBoxExisting.setEnabled(False)
-        self.comboBoxExisting.setGeometry(QtCore.QRect(40, 190, 331, 22))
         self.comboBoxExisting.setEditable(True)
         self.comboBoxExisting.setObjectName(_fromUtf8("comboBoxExisting"))
+        self.gridLayout_2.addWidget(self.comboBoxExisting, 6, 1, 1, 1)
+        self.formLayout.setWidget(7, QtGui.QFormLayout.LabelRole, self.groupBox)
+        self.buttonBox = QtGui.QDialogButtonBox(NewAddressDialog)
+        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.MinimumExpanding, QtGui.QSizePolicy.MinimumExpanding)
+        sizePolicy.setHorizontalStretch(0)
+        sizePolicy.setVerticalStretch(0)
+        sizePolicy.setHeightForWidth(self.buttonBox.sizePolicy().hasHeightForWidth())
+        self.buttonBox.setSizePolicy(sizePolicy)
+        self.buttonBox.setMinimumSize(QtCore.QSize(160, 0))
+        self.buttonBox.setOrientation(QtCore.Qt.Horizontal)
+        self.buttonBox.setStandardButtons(QtGui.QDialogButtonBox.Cancel|QtGui.QDialogButtonBox.Ok)
+        self.buttonBox.setObjectName(_fromUtf8("buttonBox"))
+        self.formLayout.setWidget(10, QtGui.QFormLayout.SpanningRole, self.buttonBox)
 
         self.retranslateUi(NewAddressDialog)
         QtCore.QObject.connect(self.buttonBox, QtCore.SIGNAL(_fromUtf8("accepted()")), NewAddressDialog.accept)
         QtCore.QObject.connect(self.buttonBox, QtCore.SIGNAL(_fromUtf8("rejected()")), NewAddressDialog.reject)
         QtCore.QObject.connect(self.radioButtonExisting, QtCore.SIGNAL(_fromUtf8("toggled(bool)")), self.comboBoxExisting.setEnabled)
+        QtCore.QObject.connect(self.radioButtonDeterministicAddress, QtCore.SIGNAL(_fromUtf8("toggled(bool)")), self.groupBoxDeterministic.setShown)
+        QtCore.QObject.connect(self.radioButtonRandomAddress, QtCore.SIGNAL(_fromUtf8("toggled(bool)")), self.groupBox.setShown)
         QtCore.QMetaObject.connectSlotsByName(NewAddressDialog)
 
     def retranslateUi(self, NewAddressDialog):
         NewAddressDialog.setWindowTitle(QtGui.QApplication.translate("NewAddressDialog", "Create new Address", None, QtGui.QApplication.UnicodeUTF8))
-        self.label.setText(QtGui.QApplication.translate("NewAddressDialog", "Here you may generate as many addresses as you like. Indeed, creating and abandoning addresses is encouraged.", None, QtGui.QApplication.UnicodeUTF8))
+        self.label.setText(QtGui.QApplication.translate("NewAddressDialog", "Here you may generate as many addresses as you like. Indeed, creating and abandoning addresses is encouraged. You may generate addresses by using either random numbers or by using a passphrase. If you use a passphrase, the address is called a \"deterministic\" address.\n"
+"The \'Random Number\' option is selected by default but deterministic addresses have several pros and cons:", None, QtGui.QApplication.UnicodeUTF8))
+        self.label_5.setText(QtGui.QApplication.translate("NewAddressDialog", "<html><head/><body><p><span style=\" font-weight:600;\">Pros:<br/></span>You can recreate your addresses on any computer from memory. <br/>You need-not worry about backing up your keys.dat file as long as you can remember your passphrase. <br/><span style=\" font-weight:600;\">Cons:<br/></span>You must remember (or write down) your passphrase if you expect to be able to recreate your keys if they are lost. <br/>You must remember the address version number and the stream number along with your passphrase. <br/>If you choose a weak passphrase and someone on the Internet can brute-force it, they can read your messages and send messages as you.</p></body></html>", None, QtGui.QApplication.UnicodeUTF8))
+        self.radioButtonRandomAddress.setText(QtGui.QApplication.translate("NewAddressDialog", "Use a random number generator to make an address", None, QtGui.QApplication.UnicodeUTF8))
+        self.radioButtonDeterministicAddress.setText(QtGui.QApplication.translate("NewAddressDialog", "Use a passpharase to make addresses", None, QtGui.QApplication.UnicodeUTF8))
+        self.checkBoxEighteenByteRipe.setText(QtGui.QApplication.translate("NewAddressDialog", "Spend several minutes of extra computing time to make the address(es) 1 or 2 characters shorter", None, QtGui.QApplication.UnicodeUTF8))
+        self.groupBoxDeterministic.setTitle(QtGui.QApplication.translate("NewAddressDialog", "Make deterministic addresses", None, QtGui.QApplication.UnicodeUTF8))
+        self.label_6.setText(QtGui.QApplication.translate("NewAddressDialog", "Passphrase", None, QtGui.QApplication.UnicodeUTF8))
+        self.label_7.setText(QtGui.QApplication.translate("NewAddressDialog", "Retype passphrase", None, QtGui.QApplication.UnicodeUTF8))
+        self.label_8.setText(QtGui.QApplication.translate("NewAddressDialog", "In addition to your passphrase, you must remember these numbers:", None, QtGui.QApplication.UnicodeUTF8))
+        self.label_9.setText(QtGui.QApplication.translate("NewAddressDialog", "Address version number: 2", None, QtGui.QApplication.UnicodeUTF8))
+        self.label_10.setText(QtGui.QApplication.translate("NewAddressDialog", "Stream number: 1", None, QtGui.QApplication.UnicodeUTF8))
+        self.label_11.setText(QtGui.QApplication.translate("NewAddressDialog", "Number of addresses to make based on your passphrase:", None, QtGui.QApplication.UnicodeUTF8))
+        self.groupBox.setTitle(QtGui.QApplication.translate("NewAddressDialog", "Randomly generate address", None, QtGui.QApplication.UnicodeUTF8))
         self.label_2.setText(QtGui.QApplication.translate("NewAddressDialog", "Label (not shown to anyone except you)", None, QtGui.QApplication.UnicodeUTF8))
         self.radioButtonMostAvailable.setText(QtGui.QApplication.translate("NewAddressDialog", "Use the most available stream", None, QtGui.QApplication.UnicodeUTF8))
-        self.radioButtonExisting.setText(QtGui.QApplication.translate("NewAddressDialog", "Use the same stream as an existing address", None, QtGui.QApplication.UnicodeUTF8))
         self.label_3.setText(QtGui.QApplication.translate("NewAddressDialog", " (best if this is the first of many addresses you will create)", None, QtGui.QApplication.UnicodeUTF8))
+        self.radioButtonExisting.setText(QtGui.QApplication.translate("NewAddressDialog", "Use the same stream as an existing address", None, QtGui.QApplication.UnicodeUTF8))
         self.label_4.setText(QtGui.QApplication.translate("NewAddressDialog", "(saves you some bandwidth and processing power)", None, QtGui.QApplication.UnicodeUTF8))
 

newaddressdialog.ui

@@ -6,40 +6,22 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>383</width>
+    <width>723</width>
-    <height>258</height>
+    <height>704</height>
    </rect>
   </property>
   <property name="windowTitle">
    <string>Create new Address</string>
   </property>
-  <widget class="QDialogButtonBox" name="buttonBox">
+  <layout class="QFormLayout" name="formLayout">
-   <property name="geometry">
+   <property name="fieldGrowthPolicy">
-    <rect>
+    <enum>QFormLayout::AllNonFixedFieldsGrow</enum>
-     <x>160</x>
-     <y>220</y>
-     <width>201</width>
-     <height>32</height>
-    </rect>
    </property>
-   <property name="orientation">
+   <item row="0" column="0" colspan="2">
-    <enum>Qt::Horizontal</enum>
-   </property>
-   <property name="standardButtons">
-    <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
-   </property>
-  </widget>
     <widget class="QLabel" name="label">
-   <property name="geometry">
-    <rect>
-     <x>10</x>
-     <y>0</y>
-     <width>361</width>
-     <height>41</height>
-    </rect>
-   </property>
      <property name="text">
-    <string>Here you may generate as many addresses as you like. Indeed, creating and abandoning addresses is encouraged.</string>
+      <string>Here you may generate as many addresses as you like. Indeed, creating and abandoning addresses is encouraged. You may generate addresses by using either random numbers or by using a passphrase. If you use a passphrase, the address is called a &quot;deterministic&quot; address.
+The 'Random Number' option is selected by default but deterministic addresses have several pros and cons:</string>
      </property>
      <property name="alignment">
       <set>Qt::AlignBottom|Qt::AlignLeading|Qt::AlignLeft</set>
@@ -48,70 +30,192 @@
       <bool>true</bool>
      </property>
     </widget>
-  <widget class="QLabel" name="label_2">
+   </item>
-   <property name="geometry">
+   <item row="2" column="0" colspan="2">
-    <rect>
+    <widget class="QLabel" name="label_5">
-     <x>20</x>
-     <y>50</y>
-     <width>301</width>
-     <height>20</height>
-    </rect>
-   </property>
      <property name="text">
-    <string>Label (not shown to anyone except you)</string>
+      <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;&lt;span style=&quot; font-weight:600;&quot;&gt;Pros:&lt;br/&gt;&lt;/span&gt;You can recreate your addresses on any computer from memory. &lt;br/&gt;You need-not worry about backing up your keys.dat file as long as you can remember your passphrase. &lt;br/&gt;&lt;span style=&quot; font-weight:600;&quot;&gt;Cons:&lt;br/&gt;&lt;/span&gt;You must remember (or write down) your passphrase if you expect to be able to recreate your keys if they are lost. &lt;br/&gt;You must remember the address version number and the stream number along with your passphrase. &lt;br/&gt;If you choose a weak passphrase and someone on the Internet can brute-force it, they can read your messages and send messages as you.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+     </property>
+     <property name="wordWrap">
+      <bool>true</bool>
      </property>
     </widget>
-  <widget class="QLineEdit" name="newaddresslabel">
+   </item>
-   <property name="geometry">
+   <item row="4" column="0" colspan="2">
-    <rect>
+    <widget class="Line" name="line">
-     <x>20</x>
+     <property name="sizePolicy">
-     <y>70</y>
+      <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
-     <width>351</width>
+       <horstretch>0</horstretch>
-     <height>20</height>
+       <verstretch>0</verstretch>
-    </rect>
+      </sizepolicy>
+     </property>
+     <property name="minimumSize">
+      <size>
+       <width>100</width>
+       <height>2</height>
+      </size>
+     </property>
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
      </property>
     </widget>
-  <widget class="QRadioButton" name="radioButtonMostAvailable">
+   </item>
-   <property name="geometry">
+   <item row="5" column="0" colspan="2">
-    <rect>
+    <widget class="QRadioButton" name="radioButtonRandomAddress">
-     <x>20</x>
-     <y>110</y>
-     <width>401</width>
-     <height>16</height>
-    </rect>
-   </property>
      <property name="text">
-    <string>Use the most available stream</string>
+      <string>Use a random number generator to make an address</string>
      </property>
      <property name="checked">
       <bool>true</bool>
      </property>
     </widget>
-  <widget class="QRadioButton" name="radioButtonExisting">
+   </item>
-   <property name="geometry">
+   <item row="6" column="0">
-    <rect>
+    <widget class="QRadioButton" name="radioButtonDeterministicAddress">
-     <x>20</x>
-     <y>150</y>
-     <width>351</width>
-     <height>18</height>
-    </rect>
-   </property>
      <property name="text">
-    <string>Use the same stream as an existing address</string>
+      <string>Use a passpharase to make addresses</string>
+     </property>
+    </widget>
+   </item>
+   <item row="9" column="0" colspan="2">
+    <widget class="QCheckBox" name="checkBoxEighteenByteRipe">
+     <property name="text">
+      <string>Spend several minutes of extra computing time to make the address(es) 1 or 2 characters shorter</string>
+     </property>
+    </widget>
+   </item>
+   <item row="8" column="0">
+    <widget class="QGroupBox" name="groupBoxDeterministic">
+     <property name="title">
+      <string>Make deterministic addresses</string>
+     </property>
+     <layout class="QGridLayout" name="gridLayout">
+      <item row="0" column="0" colspan="4">
+       <widget class="QLabel" name="label_6">
+        <property name="text">
+         <string>Passphrase</string>
+        </property>
+       </widget>
+      </item>
+      <item row="1" column="0" colspan="7">
+       <widget class="QLineEdit" name="lineEditPassphrase">
+        <property name="inputMethodHints">
+         <set>Qt::ImhHiddenText|Qt::ImhNoAutoUppercase|Qt::ImhNoPredictiveText</set>
+        </property>
+        <property name="echoMode">
+         <enum>QLineEdit::Password</enum>
+        </property>
+       </widget>
+      </item>
+      <item row="2" column="0" colspan="4">
+       <widget class="QLabel" name="label_7">
+        <property name="text">
+         <string>Retype passphrase</string>
+        </property>
+       </widget>
+      </item>
+      <item row="3" column="0" colspan="7">
+       <widget class="QLineEdit" name="lineEditPassphraseAgain">
+        <property name="echoMode">
+         <enum>QLineEdit::Password</enum>
+        </property>
+       </widget>
+      </item>
+      <item row="4" column="0" colspan="7">
+       <widget class="QLabel" name="label_8">
+        <property name="text">
+         <string>In addition to your passphrase, you must remember these numbers:</string>
+        </property>
+       </widget>
+      </item>
+      <item row="5" column="0">
+       <widget class="QLabel" name="label_9">
+        <property name="text">
+         <string>Address version number: 2</string>
+        </property>
+       </widget>
+      </item>
+      <item row="5" column="1">
+       <spacer name="horizontalSpacer">
+        <property name="orientation">
+         <enum>Qt::Horizontal</enum>
+        </property>
+        <property name="sizeHint" stdset="0">
+         <size>
+          <width>73</width>
+          <height>20</height>
+         </size>
+        </property>
+       </spacer>
+      </item>
+      <item row="5" column="3">
+       <widget class="QLabel" name="label_10">
+        <property name="text">
+         <string>Stream number: 1</string>
+        </property>
+       </widget>
+      </item>
+      <item row="5" column="4" colspan="2">
+       <spacer name="horizontalSpacer_2">
+        <property name="orientation">
+         <enum>Qt::Horizontal</enum>
+        </property>
+        <property name="sizeHint" stdset="0">
+         <size>
+          <width>42</width>
+          <height>20</height>
+         </size>
+        </property>
+       </spacer>
+      </item>
+      <item row="6" column="0" colspan="5">
+       <widget class="QLabel" name="label_11">
+        <property name="text">
+         <string>Number of addresses to make based on your passphrase:</string>
+        </property>
+       </widget>
+      </item>
+      <item row="6" column="5" colspan="2">
+       <widget class="QSpinBox" name="spinBoxNumberOfAddressesToMake">
+        <property name="minimum">
+         <number>1</number>
+        </property>
+        <property name="value">
+         <number>8</number>
+        </property>
+       </widget>
+      </item>
+     </layout>
+    </widget>
+   </item>
+   <item row="7" column="0">
+    <widget class="QGroupBox" name="groupBox">
+     <property name="title">
+      <string>Randomly generate address</string>
+     </property>
+     <layout class="QGridLayout" name="gridLayout_2">
+      <item row="0" column="0" colspan="2">
+       <widget class="QLabel" name="label_2">
+        <property name="text">
+         <string>Label (not shown to anyone except you)</string>
+        </property>
+       </widget>
+      </item>
+      <item row="1" column="0" colspan="2">
+       <widget class="QLineEdit" name="newaddresslabel"/>
+      </item>
+      <item row="2" column="0" colspan="2">
+       <widget class="QRadioButton" name="radioButtonMostAvailable">
+        <property name="text">
+         <string>Use the most available stream</string>
         </property>
         <property name="checked">
          <bool>false</bool>
         </property>
        </widget>
+      </item>
+      <item row="3" column="1">
        <widget class="QLabel" name="label_3">
-   <property name="geometry">
-    <rect>
-     <x>35</x>
-     <y>127</y>
-     <width>351</width>
-     <height>20</height>
-    </rect>
-   </property>
         <property name="text">
          <string> (best if this is the first of many addresses you will create)</string>
         </property>
@@ -119,15 +223,19 @@
          <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignTop</set>
         </property>
        </widget>
-  <widget class="QLabel" name="label_4">
+      </item>
-   <property name="geometry">
+      <item row="4" column="0" colspan="2">
-    <rect>
+       <widget class="QRadioButton" name="radioButtonExisting">
-     <x>37</x>
+        <property name="text">
-     <y>167</y>
+         <string>Use the same stream as an existing address</string>
-     <width>351</width>
-     <height>21</height>
-    </rect>
         </property>
+        <property name="checked">
+         <bool>false</bool>
+        </property>
+       </widget>
+      </item>
+      <item row="5" column="1">
+       <widget class="QLabel" name="label_4">
         <property name="text">
          <string>(saves you some bandwidth and processing power)</string>
         </property>
@@ -135,22 +243,64 @@
          <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignTop</set>
         </property>
        </widget>
+      </item>
+      <item row="6" column="0">
+       <spacer name="horizontalSpacer_3">
+        <property name="orientation">
+         <enum>Qt::Horizontal</enum>
+        </property>
+        <property name="sizeHint" stdset="0">
+         <size>
+          <width>13</width>
+          <height>20</height>
+         </size>
+        </property>
+       </spacer>
+      </item>
+      <item row="6" column="1">
        <widget class="QComboBox" name="comboBoxExisting">
         <property name="enabled">
          <bool>false</bool>
         </property>
-   <property name="geometry">
-    <rect>
-     <x>40</x>
-     <y>190</y>
-     <width>331</width>
-     <height>22</height>
-    </rect>
-   </property>
         <property name="editable">
          <bool>true</bool>
         </property>
        </widget>
+      </item>
+     </layout>
+     <zorder>comboBoxExisting</zorder>
+     <zorder>label_3</zorder>
+     <zorder>radioButtonExisting</zorder>
+     <zorder>newaddresslabel</zorder>
+     <zorder>label_4</zorder>
+     <zorder>radioButtonMostAvailable</zorder>
+     <zorder>label_2</zorder>
+     <zorder>horizontalSpacer_3</zorder>
+    </widget>
+   </item>
+   <item row="10" column="0" colspan="2">
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="MinimumExpanding" vsizetype="MinimumExpanding">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+     <property name="minimumSize">
+      <size>
+       <width>160</width>
+       <height>0</height>
+      </size>
+     </property>
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
  </widget>
  <resources/>
  <connections>
@@ -161,8 +311,8 @@
    <slot>accept()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>360</x>
+     <x>580</x>
-     <y>234</y>
+     <y>644</y>
     </hint>
     <hint type="destinationlabel">
      <x>157</x>
@@ -177,8 +327,8 @@
    <slot>reject()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>360</x>
+     <x>580</x>
-     <y>240</y>
+     <y>650</y>
     </hint>
     <hint type="destinationlabel">
      <x>286</x>
@@ -193,12 +343,44 @@
    <slot>setEnabled(bool)</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>30</x>
+     <x>60</x>
-     <y>158</y>
+     <y>349</y>
     </hint>
     <hint type="destinationlabel">
-     <x>99</x>
+     <x>148</x>
-     <y>199</y>
+     <y>394</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>radioButtonDeterministicAddress</sender>
+   <signal>toggled(bool)</signal>
+   <receiver>groupBoxDeterministic</receiver>
+   <slot>setShown(bool)</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>92</x>
+     <y>213</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>277</x>
+     <y>601</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>radioButtonRandomAddress</sender>
+   <signal>toggled(bool)</signal>
+   <receiver>groupBox</receiver>
+   <slot>setShown(bool)</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>72</x>
+     <y>189</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>68</x>
+     <y>268</y>
     </hint>
    </hints>
   </connection>

pyelliptic/__init__.py

@@ -0,0 +1,17 @@
+# Copyright (C) 2010
+# Author: Yann GUIBET
+# Contact: <yannguibet@gmail.com>
+
+__version__ = '1.3'
+
+__all__ = [
+    'OpenSSL',
+    'ecc',
+    'cipher',
+    'hash',
+]
+
+from .openssl import OpenSSL
+from .ecc import ECC
+from .cipher import Cipher
+from .hash import hmac_sha256, hmac_sha512, pbkdf2

pyelliptic/arithmetic.py

@@ -0,0 +1,103 @@
+import hashlib, re
+
+P = 2**256-2**32-2**9-2**8-2**7-2**6-2**4-1
+A = 0
+Gx = 55066263022277343669578718895168534326250603453777594175500187360389116729240
+Gy = 32670510020758816978083085130507043184471273380659243275938904335757337482424
+G = (Gx,Gy)
+
+def inv(a,n):
+  lm, hm = 1,0
+  low, high = a%n,n
+  while low > 1:
+    r = high/low
+    nm, new = hm-lm*r, high-low*r
+    lm, low, hm, high = nm, new, lm, low
+  return lm % n
+
+def get_code_string(base):
+   if base == 2: return '01'
+   elif base == 10: return '0123456789'
+   elif base == 16: return "0123456789abcdef"
+   elif base == 58: return "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"
+   elif base == 256: return ''.join([chr(x) for x in range(256)])
+   else: raise ValueError("Invalid base!")
+
+def encode(val,base,minlen=0):
+   code_string = get_code_string(base)
+   result = ""   
+   while val > 0:
+      result = code_string[val % base] + result
+      val /= base
+   if len(result) < minlen:
+      result = code_string[0]*(minlen-len(result))+result
+   return result
+
+def decode(string,base):
+   code_string = get_code_string(base)
+   result = 0
+   if base == 16: string = string.lower()
+   while len(string) > 0:
+      result *= base
+      result += code_string.find(string[0])
+      string = string[1:]
+   return result
+
+def changebase(string,frm,to,minlen=0):
+   return encode(decode(string,frm),to,minlen)
+
+def base10_add(a,b):
+  if a == None: return b[0],b[1]
+  if b == None: return a[0],a[1]
+  if a[0] == b[0]: 
+    if a[1] == b[1]: return base10_double(a[0],a[1])
+    else: return None
+  m = ((b[1]-a[1]) * inv(b[0]-a[0],P)) % P
+  x = (m*m-a[0]-b[0]) % P
+  y = (m*(a[0]-x)-a[1]) % P
+  return (x,y)
+  
+def base10_double(a):
+  if a == None: return None
+  m = ((3*a[0]*a[0]+A)*inv(2*a[1],P)) % P
+  x = (m*m-2*a[0]) % P
+  y = (m*(a[0]-x)-a[1]) % P
+  return (x,y)
+
+def base10_multiply(a,n):
+  if n == 0: return G
+  if n == 1: return a
+  if (n%2) == 0: return base10_double(base10_multiply(a,n/2))
+  if (n%2) == 1: return base10_add(base10_double(base10_multiply(a,n/2)),a)
+
+def hex_to_point(h): return (decode(h[2:34],16),decode(h[34:],16))
+
+def point_to_hex(p): return '04'+encode(p[0],16,32)+encode(p[1],16,32)
+
+def multiply(privkey,pubkey):
+  return point_to_hex(base10_multiply(hex_to_point(pubkey),decode(privkey,16)))
+
+def privtopub(privkey):
+  return point_to_hex(base10_multiply(G,decode(privkey,16)))
+
+def add(p1,p2):
+  if (len(p1)==32):
+    return encode(decode(p1,16) + decode(p2,16) % P,16,32)
+  else:
+    return point_to_hex(base10_add(hex_to_point(p1),hex_to_point(p2)))
+
+def hash160(string):
+   intermed = hashlib.sha256(string).digest()
+   return hashlib.new('ripemd160').update(intermed).digest()
+
+def dbl_sha256(string):
+   return hashlib.sha256(hashlib.sha256(string).digest()).digest()
+  
+def bin_to_b58check(inp):
+   inp_fmtd = '\x00' + inp
+   leadingzbytes = len(re.match('^\x00*',inp_fmtd).group(0))
+   checksum = dbl_sha256(inp_fmtd)[:4]
+   return '1' * leadingzbytes + changebase(inp_fmtd+checksum,256,58)
+
+def pubkey_to_address(pubkey):
+   return bin_to_b58check(hash_160(changebase(pubkey,16,256)))

pyelliptic/cipher.py

@@ -0,0 +1,81 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+#  Copyright (C) 2011 Yann GUIBET <yannguibet@gmail.com>
+#  See LICENSE for details.
+
+from pyelliptic.openssl import OpenSSL
+
+
+class Cipher:
+    """
+    Symmetric encryption
+
+        import pyelliptic
+        iv = pyelliptic.Cipher.gen_IV('aes-256-cfb')
+        ctx = pyelliptic.Cipher("secretkey", iv, 1, ciphername='aes-256-cfb')
+        ciphertext = ctx.update('test1')
+        ciphertext += ctx.update('test2')
+        ciphertext += ctx.final()
+
+        ctx2 = pyelliptic.Cipher("secretkey", iv, 0, ciphername='aes-256-cfb')
+        print ctx2.ciphering(ciphertext)
+    """
+    def __init__(self, key, iv, do, ciphername='aes-256-cbc'):
+        """
+        do == 1 => Encrypt; do == 0 => Decrypt
+        """
+        self.cipher = OpenSSL.get_cipher(ciphername)
+        self.ctx = OpenSSL.EVP_CIPHER_CTX_new()
+        if do == 1 or do == 0:
+            k = OpenSSL.malloc(key, len(key))
+            IV = OpenSSL.malloc(iv, len(iv))
+            OpenSSL.EVP_CipherInit_ex(
+                self.ctx, self.cipher.get_pointer(), 0, k, IV, do)
+        else:
+            raise Exception("RTFM ...")
+
+    @staticmethod
+    def get_all_cipher():
+        """
+        static method, returns all ciphers available
+        """
+        return OpenSSL.cipher_algo.keys()
+
+    @staticmethod
+    def get_blocksize(ciphername):
+        cipher = OpenSSL.get_cipher(ciphername)
+        return cipher.get_blocksize()
+
+    @staticmethod
+    def gen_IV(ciphername):
+        cipher = OpenSSL.get_cipher(ciphername)
+        return OpenSSL.rand(cipher.get_blocksize())
+
+    def update(self, input):
+        i = OpenSSL.c_int(0)
+        buffer = OpenSSL.malloc(b"", len(input) + self.cipher.get_blocksize())
+        inp = OpenSSL.malloc(input, len(input))
+        if OpenSSL.EVP_CipherUpdate(self.ctx, OpenSSL.byref(buffer),
+                                    OpenSSL.byref(i), inp, len(input)) == 0:
+            raise Exception("[OpenSSL] EVP_CipherUpdate FAIL ...")
+        return buffer.raw[0:i.value]
+
+    def final(self):
+        i = OpenSSL.c_int(0)
+        buffer = OpenSSL.malloc(b"", self.cipher.get_blocksize())
+        if (OpenSSL.EVP_CipherFinal_ex(self.ctx, OpenSSL.byref(buffer),
+                                       OpenSSL.byref(i))) == 0:
+            raise Exception("[OpenSSL] EVP_CipherFinal_ex FAIL ...")
+        return buffer.raw[0:i.value]
+
+    def ciphering(self, input):
+        """
+        Do update and final in one method
+        """
+        buff = self.update(input)
+        return buff + self.final()
+
+    def __del__(self):
+        OpenSSL.EVP_CIPHER_CTX_cleanup(self.ctx)
+        OpenSSL.EVP_CIPHER_CTX_free(self.ctx)

pyelliptic/ecc.py

@@ -0,0 +1,460 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+#  Copyright (C) 2011 Yann GUIBET <yannguibet@gmail.com>
+#  See LICENSE for details.
+
+from hashlib import sha512
+from pyelliptic.openssl import OpenSSL
+from pyelliptic.cipher import Cipher
+from pyelliptic.hash import hmac_sha256
+from struct import pack, unpack
+
+
+class ECC:
+    """
+    Asymmetric encryption with Elliptic Curve Cryptography (ECC)
+    ECDH, ECDSA and ECIES
+
+        import pyelliptic
+
+        alice = pyelliptic.ECC() # default curve: sect283r1
+        bob = pyelliptic.ECC(curve='sect571r1')
+
+        ciphertext = alice.encrypt("Hello Bob", bob.get_pubkey())
+        print bob.decrypt(ciphertext)
+
+        signature = bob.sign("Hello Alice")
+        # alice's job :
+        print pyelliptic.ECC(
+            pubkey=bob.get_pubkey()).verify(signature, "Hello Alice")
+
+        # ERROR !!!
+        try:
+            key = alice.get_ecdh_key(bob.get_pubkey())
+        except: print("For ECDH key agreement,\
+                      the keys must be defined on the same curve !")
+
+        alice = pyelliptic.ECC(curve='sect571r1')
+        print alice.get_ecdh_key(bob.get_pubkey()).encode('hex')
+        print bob.get_ecdh_key(alice.get_pubkey()).encode('hex')
+
+    """
+    def __init__(self, pubkey=None, privkey=None, pubkey_x=None,
+                 pubkey_y=None, raw_privkey=None, curve='sect283r1'):
+        """
+        For a normal and High level use, specifie pubkey,
+        privkey (if you need) and the curve
+        """
+        if type(curve) == str:
+            self.curve = OpenSSL.get_curve(curve)
+        else:
+            self.curve = curve
+
+        if pubkey_x is not None and pubkey_y is not None:
+            self._set_keys(pubkey_x, pubkey_y, raw_privkey)
+        elif pubkey is not None:
+            curve, pubkey_x, pubkey_y, i = ECC._decode_pubkey(pubkey)
+            if privkey is not None:
+                curve2, raw_privkey, i = ECC._decode_privkey(privkey)
+                if curve != curve2:
+                    raise Exception("Bad ECC keys ...")
+            self.curve = curve
+            self._set_keys(pubkey_x, pubkey_y, raw_privkey)
+        else:
+            self.privkey, self.pubkey_x, self.pubkey_y = self._generate()
+
+    def _set_keys(self, pubkey_x, pubkey_y, privkey):
+        if self.raw_check_key(privkey, pubkey_x, pubkey_y) < 0:
+            self.pubkey_x = None
+            self.pubkey_y = None
+            self.privkey = None
+            raise Exception("Bad ECC keys ...")
+        else:
+            self.pubkey_x = pubkey_x
+            self.pubkey_y = pubkey_y
+            self.privkey = privkey
+
+    @staticmethod
+    def get_curves():
+        """
+        static method, returns the list of all the curves available
+        """
+        return OpenSSL.curves.keys()
+
+    def get_curve(self):
+        return OpenSSL.get_curve_by_id(self.curve)
+
+    def get_curve_id(self):
+        return self.curve
+
+    def get_pubkey(self):
+        """
+        High level function which returns :
+        curve(2) + len_of_pubkeyX(2) + pubkeyX + len_of_pubkeyY + pubkeyY
+        """
+        return b''.join((pack('!H', self.curve),
+                         pack('!H', len(self.pubkey_x)),
+                         self.pubkey_x,
+                         pack('!H', len(self.pubkey_y)),
+                         self.pubkey_y
+                         ))
+
+    def get_privkey(self):
+        """
+        High level function which returns
+        curve(2) + len_of_privkey(2) + privkey
+        """
+        return b''.join((pack('!H', self.curve),
+                         pack('!H', len(self.privkey)),
+                         self.privkey
+                         ))
+
+    @staticmethod
+    def _decode_pubkey(pubkey):
+        i = 0
+        curve = unpack('!H', pubkey[i:i + 2])[0]
+        i += 2
+        tmplen = unpack('!H', pubkey[i:i + 2])[0]
+        i += 2
+        pubkey_x = pubkey[i:i + tmplen]
+        i += tmplen
+        tmplen = unpack('!H', pubkey[i:i + 2])[0]
+        i += 2
+        pubkey_y = pubkey[i:i + tmplen]
+        i += tmplen
+        return curve, pubkey_x, pubkey_y, i
+
+    @staticmethod
+    def _decode_privkey(privkey):
+        i = 0
+        curve = unpack('!H', privkey[i:i + 2])[0]
+        i += 2
+        tmplen = unpack('!H', privkey[i:i + 2])[0]
+        i += 2
+        privkey = privkey[i:i + tmplen]
+        i += tmplen
+        return curve, privkey, i
+
+    def _generate(self):
+        try:
+            pub_key_x = OpenSSL.BN_new()
+            pub_key_y = OpenSSL.BN_new()
+
+            key = OpenSSL.EC_KEY_new_by_curve_name(self.curve)
+            if key == 0:
+                raise Exception("[OpenSSL] EC_KEY_new_by_curve_name FAIL ...")
+            if (OpenSSL.EC_KEY_generate_key(key)) == 0:
+                raise Exception("[OpenSSL] EC_KEY_generate_key FAIL ...")
+            if (OpenSSL.EC_KEY_check_key(key)) == 0:
+                raise Exception("[OpenSSL] EC_KEY_check_key FAIL ...")
+            priv_key = OpenSSL.EC_KEY_get0_private_key(key)
+
+            group = OpenSSL.EC_KEY_get0_group(key)
+            pub_key = OpenSSL.EC_KEY_get0_public_key(key)
+
+            if (OpenSSL.EC_POINT_get_affine_coordinates_GFp(group, pub_key,
+                                                            pub_key_x,
+                                                            pub_key_y, 0
+                                                            )) == 0:
+                raise Exception(
+                    "[OpenSSL] EC_POINT_get_affine_coordinates_GFp FAIL ...")
+
+            privkey = OpenSSL.malloc(0, OpenSSL.BN_num_bytes(priv_key))
+            pubkeyx = OpenSSL.malloc(0, OpenSSL.BN_num_bytes(pub_key_x))
+            pubkeyy = OpenSSL.malloc(0, OpenSSL.BN_num_bytes(pub_key_y))
+            OpenSSL.BN_bn2bin(priv_key, privkey)
+            privkey = privkey.raw
+            OpenSSL.BN_bn2bin(pub_key_x, pubkeyx)
+            pubkeyx = pubkeyx.raw
+            OpenSSL.BN_bn2bin(pub_key_y, pubkeyy)
+            pubkeyy = pubkeyy.raw
+            self.raw_check_key(privkey, pubkeyx, pubkeyy)
+
+            return privkey, pubkeyx, pubkeyy
+
+        finally:
+            OpenSSL.EC_KEY_free(key)
+            OpenSSL.BN_free(pub_key_x)
+            OpenSSL.BN_free(pub_key_y)
+
+    def get_ecdh_key(self, pubkey):
+        """
+        High level function. Compute public key with the local private key
+        and returns a 512bits shared key
+        """
+        curve, pubkey_x, pubkey_y, i = ECC._decode_pubkey(pubkey)
+        if curve != self.curve:
+            raise Exception("ECC keys must be from the same curve !")
+        return sha512(self.raw_get_ecdh_key(pubkey_x, pubkey_y)).digest()
+
+    def raw_get_ecdh_key(self, pubkey_x, pubkey_y):
+        try:
+            ecdh_keybuffer = OpenSSL.malloc(0, 32)
+
+            other_key = OpenSSL.EC_KEY_new_by_curve_name(self.curve)
+            if other_key == 0:
+                raise Exception("[OpenSSL] EC_KEY_new_by_curve_name FAIL ...")
+
+            other_pub_key_x = OpenSSL.BN_bin2bn(pubkey_x, len(pubkey_x), 0)
+            other_pub_key_y = OpenSSL.BN_bin2bn(pubkey_y, len(pubkey_y), 0)
+
+            other_group = OpenSSL.EC_KEY_get0_group(other_key)
+            other_pub_key = OpenSSL.EC_POINT_new(other_group)
+
+            if (OpenSSL.EC_POINT_set_affine_coordinates_GFp(other_group,
+                                                            other_pub_key,
+                                                            other_pub_key_x,
+                                                            other_pub_key_y,
+                                                            0)) == 0:
+                raise Exception(
+                    "[OpenSSL] EC_POINT_set_affine_coordinates_GFp FAIL ...")
+            if (OpenSSL.EC_KEY_set_public_key(other_key, other_pub_key)) == 0:
+                raise Exception("[OpenSSL] EC_KEY_set_public_key FAIL ...")
+            if (OpenSSL.EC_KEY_check_key(other_key)) == 0:
+                raise Exception("[OpenSSL] EC_KEY_check_key FAIL ...")
+
+            own_key = OpenSSL.EC_KEY_new_by_curve_name(self.curve)
+            if own_key == 0:
+                raise Exception("[OpenSSL] EC_KEY_new_by_curve_name FAIL ...")
+            own_priv_key = OpenSSL.BN_bin2bn(
+                self.privkey, len(self.privkey), 0)
+
+            if (OpenSSL.EC_KEY_set_private_key(own_key, own_priv_key)) == 0:
+                raise Exception("[OpenSSL] EC_KEY_set_private_key FAIL ...")
+
+            OpenSSL.ECDH_set_method(own_key, OpenSSL.ECDH_OpenSSL())
+            ecdh_keylen = OpenSSL.ECDH_compute_key(
+                ecdh_keybuffer, 32, other_pub_key, own_key, 0)
+
+            if ecdh_keylen != 32:
+                raise Exception("[OpenSSL] ECDH keylen FAIL ...")
+
+            return ecdh_keybuffer.raw
+
+        finally:
+            OpenSSL.EC_KEY_free(other_key)
+            OpenSSL.BN_free(other_pub_key_x)
+            OpenSSL.BN_free(other_pub_key_y)
+            OpenSSL.EC_POINT_free(other_pub_key)
+            OpenSSL.EC_KEY_free(own_key)
+            OpenSSL.BN_free(own_priv_key)
+
+    def check_key(self, privkey, pubkey):
+        """
+        Check the public key and the private key.
+        The private key is optional (replace by None)
+        """
+        curve, pubkey_x, pubkey_y, i = ECC._decode_pubkey(pubkey)
+        if privkey is None:
+            raw_privkey = None
+            curve2 = curve
+        else:
+            curve2, raw_privkey, i = ECC._decode_privkey(privkey)
+        if curve != curve2:
+            raise Exception("Bad public and private key")
+        return self.raw_check_key(raw_privkey, pubkey_x, pubkey_y, curve)
+
+    def raw_check_key(self, privkey, pubkey_x, pubkey_y, curve=None):
+        if curve is None:
+            curve = self.curve
+        elif type(curve) == str:
+            curve = OpenSSL.get_curve(curve)
+        else:
+            curve = curve
+        try:
+            key = OpenSSL.EC_KEY_new_by_curve_name(curve)
+            if key == 0:
+                raise Exception("[OpenSSL] EC_KEY_new_by_curve_name FAIL ...")
+            if privkey is not None:
+                priv_key = OpenSSL.BN_bin2bn(privkey, len(privkey), 0)
+            pub_key_x = OpenSSL.BN_bin2bn(pubkey_x, len(pubkey_x), 0)
+            pub_key_y = OpenSSL.BN_bin2bn(pubkey_y, len(pubkey_y), 0)
+
+            if privkey is not None:
+                if (OpenSSL.EC_KEY_set_private_key(key, priv_key)) == 0:
+                    raise Exception(
+                        "[OpenSSL] EC_KEY_set_private_key FAIL ...")
+
+            group = OpenSSL.EC_KEY_get0_group(key)
+            pub_key = OpenSSL.EC_POINT_new(group)
+
+            if (OpenSSL.EC_POINT_set_affine_coordinates_GFp(group, pub_key,
+                                                            pub_key_x,
+                                                            pub_key_y,
+                                                            0)) == 0:
+                raise Exception(
+                    "[OpenSSL] EC_POINT_set_affine_coordinates_GFp FAIL ...")
+            if (OpenSSL.EC_KEY_set_public_key(key, pub_key)) == 0:
+                raise Exception("[OpenSSL] EC_KEY_set_public_key FAIL ...")
+            if (OpenSSL.EC_KEY_check_key(key)) == 0:
+                raise Exception("[OpenSSL] EC_KEY_check_key FAIL ...")
+            return 0
+
+        finally:
+            OpenSSL.EC_KEY_free(key)
+            OpenSSL.BN_free(pub_key_x)
+            OpenSSL.BN_free(pub_key_y)
+            OpenSSL.EC_POINT_free(pub_key)
+            if privkey is not None:
+                OpenSSL.BN_free(priv_key)
+
+    def sign(self, inputb):
+        """
+        Sign the input with ECDSA method and returns the signature
+        """
+        try:
+            size = len(inputb)
+            buff = OpenSSL.malloc(inputb, size)
+            digest = OpenSSL.malloc(0, 64)
+            md_ctx = OpenSSL.EVP_MD_CTX_create()
+            dgst_len = OpenSSL.pointer(OpenSSL.c_int(0))
+            siglen = OpenSSL.pointer(OpenSSL.c_int(0))
+            sig = OpenSSL.malloc(0, 151)
+
+            key = OpenSSL.EC_KEY_new_by_curve_name(self.curve)
+            if key == 0:
+                raise Exception("[OpenSSL] EC_KEY_new_by_curve_name FAIL ...")
+
+            priv_key = OpenSSL.BN_bin2bn(self.privkey, len(self.privkey), 0)
+            pub_key_x = OpenSSL.BN_bin2bn(self.pubkey_x, len(self.pubkey_x), 0)
+            pub_key_y = OpenSSL.BN_bin2bn(self.pubkey_y, len(self.pubkey_y), 0)
+
+            if (OpenSSL.EC_KEY_set_private_key(key, priv_key)) == 0:
+                raise Exception("[OpenSSL] EC_KEY_set_private_key FAIL ...")
+
+            group = OpenSSL.EC_KEY_get0_group(key)
+            pub_key = OpenSSL.EC_POINT_new(group)
+
+            if (OpenSSL.EC_POINT_set_affine_coordinates_GFp(group, pub_key,
+                                                            pub_key_x,
+                                                            pub_key_y,
+                                                            0)) == 0:
+                raise Exception(
+                    "[OpenSSL] EC_POINT_set_affine_coordinates_GFp FAIL ...")
+            if (OpenSSL.EC_KEY_set_public_key(key, pub_key)) == 0:
+                raise Exception("[OpenSSL] EC_KEY_set_public_key FAIL ...")
+            if (OpenSSL.EC_KEY_check_key(key)) == 0:
+                raise Exception("[OpenSSL] EC_KEY_check_key FAIL ...")
+
+            OpenSSL.EVP_MD_CTX_init(md_ctx)
+            OpenSSL.EVP_DigestInit(md_ctx, OpenSSL.EVP_ecdsa())
+
+            if (OpenSSL.EVP_DigestUpdate(md_ctx, buff, size)) == 0:
+                raise Exception("[OpenSSL] EVP_DigestUpdate FAIL ...")
+            OpenSSL.EVP_DigestFinal(md_ctx, digest, dgst_len)
+            OpenSSL.ECDSA_sign(0, digest, dgst_len.contents, sig, siglen, key)
+            if (OpenSSL.ECDSA_verify(0, digest, dgst_len.contents, sig,
+                                     siglen.contents, key)) != 1:
+                raise Exception("[OpenSSL] ECDSA_verify FAIL ...")
+
+            return sig.raw[:siglen.contents.value]
+
+        finally:
+            OpenSSL.EC_KEY_free(key)
+            OpenSSL.BN_free(pub_key_x)
+            OpenSSL.BN_free(pub_key_y)
+            OpenSSL.BN_free(priv_key)
+            OpenSSL.EC_POINT_free(pub_key)
+            OpenSSL.EVP_MD_CTX_destroy(md_ctx)
+
+    def verify(self, sig, inputb):
+        """
+        Verify the signature with the input and the local public key.
+        Returns a boolean
+        """
+        try:
+            bsig = OpenSSL.malloc(sig, len(sig))
+            binputb = OpenSSL.malloc(inputb, len(inputb))
+            digest = OpenSSL.malloc(0, 64)
+            dgst_len = OpenSSL.pointer(OpenSSL.c_int(0))
+            md_ctx = OpenSSL.EVP_MD_CTX_create()
+
+            key = OpenSSL.EC_KEY_new_by_curve_name(self.curve)
+
+            if key == 0:
+                raise Exception("[OpenSSL] EC_KEY_new_by_curve_name FAIL ...")
+
+            pub_key_x = OpenSSL.BN_bin2bn(self.pubkey_x, len(self.pubkey_x), 0)
+            pub_key_y = OpenSSL.BN_bin2bn(self.pubkey_y, len(self.pubkey_y), 0)
+            group = OpenSSL.EC_KEY_get0_group(key)
+            pub_key = OpenSSL.EC_POINT_new(group)
+
+            if (OpenSSL.EC_POINT_set_affine_coordinates_GFp(group, pub_key,
+                                                            pub_key_x,
+                                                            pub_key_y,
+                                                            0)) == 0:
+                raise Exception(
+                    "[OpenSSL] EC_POINT_set_affine_coordinates_GFp FAIL ...")
+            if (OpenSSL.EC_KEY_set_public_key(key, pub_key)) == 0:
+                raise Exception("[OpenSSL] EC_KEY_set_public_key FAIL ...")
+            if (OpenSSL.EC_KEY_check_key(key)) == 0:
+                raise Exception("[OpenSSL] EC_KEY_check_key FAIL ...")
+
+            OpenSSL.EVP_MD_CTX_init(md_ctx)
+            OpenSSL.EVP_DigestInit(md_ctx, OpenSSL.EVP_ecdsa())
+            if (OpenSSL.EVP_DigestUpdate(md_ctx, binputb, len(inputb))) == 0:
+                raise Exception("[OpenSSL] EVP_DigestUpdate FAIL ...")
+
+            OpenSSL.EVP_DigestFinal(md_ctx, digest, dgst_len)
+            ret = OpenSSL.ECDSA_verify(
+                0, digest, dgst_len.contents, bsig, len(sig), key)
+
+            if ret == -1:
+                return False  # Fail to Check
+            else:
+                if ret == 0:
+                    return False  # Bad signature !
+                else:
+                    return True  # Good
+            return False
+
+        finally:
+            OpenSSL.EC_KEY_free(key)
+            OpenSSL.BN_free(pub_key_x)
+            OpenSSL.BN_free(pub_key_y)
+            OpenSSL.EC_POINT_free(pub_key)
+            OpenSSL.EVP_MD_CTX_destroy(md_ctx)
+
+    @staticmethod
+    def encrypt(data, pubkey, ephemcurve=None, ciphername='aes-256-cbc'):
+        """
+        Encrypt data with ECIES method using the public key of the recipient.
+        """
+        curve, pubkey_x, pubkey_y, i = ECC._decode_pubkey(pubkey)
+        return ECC.raw_encrypt(data, pubkey_x, pubkey_y, curve=curve,
+                               ephemcurve=ephemcurve, ciphername=ciphername)
+
+    @staticmethod
+    def raw_encrypt(data, pubkey_x, pubkey_y, curve='sect283r1',
+                    ephemcurve=None, ciphername='aes-256-cbc'):
+        if ephemcurve is None:
+            ephemcurve = curve
+        ephem = ECC(curve=ephemcurve)
+        key = sha512(ephem.raw_get_ecdh_key(pubkey_x, pubkey_y)).digest()
+        key_e, key_m = key[:32], key[32:]
+        pubkey = ephem.get_pubkey()
+        iv = OpenSSL.rand(OpenSSL.get_cipher(ciphername).get_blocksize())
+        ctx = Cipher(key_e, iv, 1, ciphername)
+        ciphertext = ctx.ciphering(data)
+        mac = hmac_sha256(key_m, ciphertext)
+        return iv + pubkey + ciphertext + mac
+
+    def decrypt(self, data, ciphername='aes-256-cbc'):
+        """
+        Decrypt data with ECIES method using the local private key
+        """
+        blocksize = OpenSSL.get_cipher(ciphername).get_blocksize()
+        iv = data[:blocksize]
+        i = blocksize
+        curve, pubkey_x, pubkey_y, i2 = ECC._decode_pubkey(data[i:])
+        i += i2
+        ciphertext = data[i:len(data)-32]
+        i += len(ciphertext)
+        mac = data[i:]
+        key = sha512(self.raw_get_ecdh_key(pubkey_x, pubkey_y)).digest()
+        key_e, key_m = key[:32], key[32:]
+        if hmac_sha256(key_m, ciphertext) != mac:
+            raise RuntimeError("Fail to verify data")
+        ctx = Cipher(key_e, iv, 0, ciphername)
+        return ctx.ciphering(ciphertext)

pyelliptic/hash.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+#  Copyright (C) 2011 Yann GUIBET <yannguibet@gmail.com>
+#  See LICENSE for details.
+
+from pyelliptic.openssl import OpenSSL
+
+
+def hmac_sha256(k, m):
+    """
+    Compute the key and the message with HMAC SHA5256
+    """
+    key = OpenSSL.malloc(k, len(k))
+    d = OpenSSL.malloc(m, len(m))
+    md = OpenSSL.malloc(0, 32)
+    i = OpenSSL.pointer(OpenSSL.c_int(0))
+    OpenSSL.HMAC(OpenSSL.EVP_sha256(), key, len(k), d, len(m), md, i)
+    return md.raw
+
+
+def hmac_sha512(k, m):
+    """
+    Compute the key and the message with HMAC SHA512
+    """
+    key = OpenSSL.malloc(k, len(k))
+    d = OpenSSL.malloc(m, len(m))
+    md = OpenSSL.malloc(0, 64)
+    i = OpenSSL.pointer(OpenSSL.c_int(0))
+    OpenSSL.HMAC(OpenSSL.EVP_sha512(), key, len(k), d, len(m), md, i)
+    return md.raw
+
+
+def pbkdf2(password, salt=None, i=10000, keylen=64):
+    if salt is None:
+        salt = OpenSSL.rand(8)
+    p_password = OpenSSL.malloc(password, len(password))
+    p_salt = OpenSSL.malloc(salt, len(salt))
+    output = OpenSSL.malloc(0, keylen)
+    OpenSSL.PKCS5_PBKDF2_HMAC(p_password, len(password), p_salt,
+                              len(p_salt), i, OpenSSL.EVP_sha256(),
+                              keylen, output)
+    return salt, output.raw

pyelliptic/highlevelcrypto.py

@@ -0,0 +1,33 @@
+import pyelliptic
+import arithmetic as a
+def makeCryptor(privkey):
+  privkey_bin = '\x02\xca\x00 '+a.changebase(privkey,16,256,minlen=32)
+  pubkey = a.changebase(a.privtopub(privkey),16,256,minlen=65)[1:]
+  pubkey_bin = '\x02\xca\x00 '+pubkey[:32]+'\x00 '+pubkey[32:]
+  cryptor = pyelliptic.ECC(curve='secp256k1',privkey=privkey_bin,pubkey=pubkey_bin)
+  return cryptor
+def hexToPubkey(pubkey):
+  pubkey_raw = a.changebase(pubkey[2:],16,256,minlen=64)
+  pubkey_bin = '\x02\xca\x00 '+pubkey_raw[:32]+'\x00 '+pubkey_raw[32:]
+  return pubkey_bin
+def makePubCryptor(pubkey):
+  pubkey_bin = hexToPubkey(pubkey)
+  return pyelliptic.ECC(curve='secp256k1',pubkey=pubkey_bin)
+# Converts hex private key into hex public key
+def privToPub(privkey):
+  return a.privtopub(privkey)
+# Encrypts message with hex public key
+def encrypt(msg,hexPubkey):
+  return pyelliptic.ECC(curve='secp256k1').encrypt(msg,hexToPubkey(hexPubkey))
+# Decrypts message with hex private key
+def decrypt(msg,hexPrivkey):
+  return makeCryptor(hexPrivkey).decrypt(msg)
+# Decrypts message with an existing pyelliptic.ecc.ECC object
+def decryptFast(msg,cryptor):
+  return cryptor.decrypt(msg)
+# Signs with hex private key
+def sign(msg,hexPrivkey):
+  return makeCryptor(hexPrivkey).sign(msg)
+# Verifies with hex public key
+def verify(msg,sig,hexPubkey):
+  return makePubCryptor(hexPubkey).verify(sig,msg)

pyelliptic/openssl.py

@@ -0,0 +1,422 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+#  Copyright (C) 2011 Yann GUIBET <yannguibet@gmail.com>
+#  See LICENSE for details.
+#
+#  Software slightly changed by Jonathan Warren <bitmessage at-symbol jonwarren.org>
+
+import sys
+import ctypes
+
+OpenSSL = None
+
+
+class CipherName:
+    def __init__(self, name, pointer, blocksize):
+        self._name = name
+        self._pointer = pointer
+        self._blocksize = blocksize
+
+    def __str__(self):
+        return "Cipher : " + self._name + " | Blocksize : " + str(self._blocksize) + " | Fonction pointer : " + str(self._pointer)
+
+    def get_pointer(self):
+        return self._pointer()
+
+    def get_name(self):
+        return self._name
+
+    def get_blocksize(self):
+        return self._blocksize
+
+
+class _OpenSSL:
+    """
+    Wrapper for OpenSSL using ctypes
+    """
+    def __init__(self, library):
+        """
+        Build the wrapper
+        """
+        self._lib = ctypes.CDLL(library)
+
+        self.pointer = ctypes.pointer
+        self.c_int = ctypes.c_int
+        self.byref = ctypes.byref
+        self.create_string_buffer = ctypes.create_string_buffer
+
+        self.BN_new = self._lib.BN_new
+        self.BN_new.restype = ctypes.c_void_p
+        self.BN_new.argtypes = []
+
+        self.BN_free = self._lib.BN_free
+        self.BN_free.restype = None
+        self.BN_free.argtypes = [ctypes.c_void_p]
+
+        self.BN_num_bits = self._lib.BN_num_bits
+        self.BN_num_bits.restype = ctypes.c_int
+        self.BN_num_bits.argtypes = [ctypes.c_void_p]
+
+        self.BN_bn2bin = self._lib.BN_bn2bin
+        self.BN_bn2bin.restype = ctypes.c_int
+        self.BN_bn2bin.argtypes = [ctypes.c_void_p, ctypes.c_void_p]
+
+        self.BN_bin2bn = self._lib.BN_bin2bn
+        self.BN_bin2bn.restype = ctypes.c_void_p
+        self.BN_bin2bn.argtypes = [ctypes.c_void_p, ctypes.c_int,
+                                   ctypes.c_void_p]
+
+        self.EC_KEY_free = self._lib.EC_KEY_free
+        self.EC_KEY_free.restype = None
+        self.EC_KEY_free.argtypes = [ctypes.c_void_p]
+
+        self.EC_KEY_new_by_curve_name = self._lib.EC_KEY_new_by_curve_name
+        self.EC_KEY_new_by_curve_name.restype = ctypes.c_void_p
+        self.EC_KEY_new_by_curve_name.argtypes = [ctypes.c_int]
+
+        self.EC_KEY_generate_key = self._lib.EC_KEY_generate_key
+        self.EC_KEY_generate_key.restype = ctypes.c_int
+        self.EC_KEY_generate_key.argtypes = [ctypes.c_void_p]
+
+        self.EC_KEY_check_key = self._lib.EC_KEY_check_key
+        self.EC_KEY_check_key.restype = ctypes.c_int
+        self.EC_KEY_check_key.argtypes = [ctypes.c_void_p]
+
+        self.EC_KEY_get0_private_key = self._lib.EC_KEY_get0_private_key
+        self.EC_KEY_get0_private_key.restype = ctypes.c_void_p
+        self.EC_KEY_get0_private_key.argtypes = [ctypes.c_void_p]
+
+        self.EC_KEY_get0_public_key = self._lib.EC_KEY_get0_public_key
+        self.EC_KEY_get0_public_key.restype = ctypes.c_void_p
+        self.EC_KEY_get0_public_key.argtypes = [ctypes.c_void_p]
+
+        self.EC_KEY_get0_group = self._lib.EC_KEY_get0_group
+        self.EC_KEY_get0_group.restype = ctypes.c_void_p
+        self.EC_KEY_get0_group.argtypes = [ctypes.c_void_p]
+
+        self.EC_POINT_get_affine_coordinates_GFp = self._lib.EC_POINT_get_affine_coordinates_GFp
+        self.EC_POINT_get_affine_coordinates_GFp.restype = ctypes.c_int
+        self.EC_POINT_get_affine_coordinates_GFp.argtypes = [ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p]
+
+        self.EC_KEY_set_private_key = self._lib.EC_KEY_set_private_key
+        self.EC_KEY_set_private_key.restype = ctypes.c_int
+        self.EC_KEY_set_private_key.argtypes = [ctypes.c_void_p,
+                                                ctypes.c_void_p]
+
+        self.EC_KEY_set_public_key = self._lib.EC_KEY_set_public_key
+        self.EC_KEY_set_public_key.restype = ctypes.c_int
+        self.EC_KEY_set_public_key.argtypes = [ctypes.c_void_p,
+                                               ctypes.c_void_p]
+
+        self.EC_KEY_set_group = self._lib.EC_KEY_set_group
+        self.EC_KEY_set_group.restype = ctypes.c_int
+        self.EC_KEY_set_group.argtypes = [ctypes.c_void_p, ctypes.c_void_p]
+
+        self.EC_POINT_set_affine_coordinates_GFp = self._lib.EC_POINT_set_affine_coordinates_GFp
+        self.EC_POINT_set_affine_coordinates_GFp.restype = ctypes.c_int
+        self.EC_POINT_set_affine_coordinates_GFp.argtypes = [ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p]
+
+        self.EC_POINT_new = self._lib.EC_POINT_new
+        self.EC_POINT_new.restype = ctypes.c_void_p
+        self.EC_POINT_new.argtypes = [ctypes.c_void_p]
+
+        self.EC_POINT_free = self._lib.EC_POINT_free
+        self.EC_POINT_free.restype = None
+        self.EC_POINT_free.argtypes = [ctypes.c_void_p]
+
+        self.BN_CTX_free = self._lib.BN_CTX_free
+        self.BN_CTX_free.restype = None
+        self.BN_CTX_free.argtypes = [ctypes.c_void_p]
+
+        self.EC_POINT_mul = self._lib.EC_POINT_mul
+        self.EC_POINT_mul.restype = None
+        self.EC_POINT_mul.argtypes = [ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p]
+
+        self.EC_KEY_set_private_key = self._lib.EC_KEY_set_private_key
+        self.EC_KEY_set_private_key.restype = ctypes.c_int
+        self.EC_KEY_set_private_key.argtypes = [ctypes.c_void_p,
+                                                ctypes.c_void_p]
+
+        self.ECDH_OpenSSL = self._lib.ECDH_OpenSSL
+        self._lib.ECDH_OpenSSL.restype = ctypes.c_void_p
+        self._lib.ECDH_OpenSSL.argtypes = []
+
+        self.BN_CTX_new = self._lib.BN_CTX_new
+        self._lib.BN_CTX_new.restype = ctypes.c_void_p
+        self._lib.BN_CTX_new.argtypes = []
+
+        self.ECDH_set_method = self._lib.ECDH_set_method
+        self._lib.ECDH_set_method.restype = ctypes.c_int
+        self._lib.ECDH_set_method.argtypes = [ctypes.c_void_p, ctypes.c_void_p]
+
+        self.ECDH_compute_key = self._lib.ECDH_compute_key
+        self.ECDH_compute_key.restype = ctypes.c_int
+        self.ECDH_compute_key.argtypes = [ctypes.c_void_p,
+                                          ctypes.c_int, ctypes.c_void_p, ctypes.c_void_p]
+
+        self.EVP_CipherInit_ex = self._lib.EVP_CipherInit_ex
+        self.EVP_CipherInit_ex.restype = ctypes.c_int
+        self.EVP_CipherInit_ex.argtypes = [ctypes.c_void_p,
+                                           ctypes.c_void_p, ctypes.c_void_p]
+
+        self.EVP_CIPHER_CTX_new = self._lib.EVP_CIPHER_CTX_new
+        self.EVP_CIPHER_CTX_new.restype = ctypes.c_void_p
+        self.EVP_CIPHER_CTX_new.argtypes = []
+
+        # Cipher
+        self.EVP_aes_128_cfb128 = self._lib.EVP_aes_128_cfb128
+        self.EVP_aes_128_cfb128.restype = ctypes.c_void_p
+        self.EVP_aes_128_cfb128.argtypes = []
+
+        self.EVP_aes_256_cfb128 = self._lib.EVP_aes_256_cfb128
+        self.EVP_aes_256_cfb128.restype = ctypes.c_void_p
+        self.EVP_aes_256_cfb128.argtypes = []
+
+        self.EVP_aes_128_cbc = self._lib.EVP_aes_128_cbc
+        self.EVP_aes_128_cbc.restype = ctypes.c_void_p
+        self.EVP_aes_128_cbc.argtypes = []
+
+        self.EVP_aes_256_cbc = self._lib.EVP_aes_256_cbc
+        self.EVP_aes_256_cbc.restype = ctypes.c_void_p
+        self.EVP_aes_256_cbc.argtypes = []
+
+        self.EVP_aes_128_ctr = self._lib.EVP_aes_128_ctr
+        self.EVP_aes_128_ctr.restype = ctypes.c_void_p
+        self.EVP_aes_128_ctr.argtypes = []
+
+        self.EVP_aes_256_ctr = self._lib.EVP_aes_256_ctr
+        self.EVP_aes_256_ctr.restype = ctypes.c_void_p
+        self.EVP_aes_256_ctr.argtypes = []
+
+        self.EVP_aes_128_ofb = self._lib.EVP_aes_128_ofb
+        self.EVP_aes_128_ofb.restype = ctypes.c_void_p
+        self.EVP_aes_128_ofb.argtypes = []
+
+        self.EVP_aes_256_ofb = self._lib.EVP_aes_256_ofb
+        self.EVP_aes_256_ofb.restype = ctypes.c_void_p
+        self.EVP_aes_256_ofb.argtypes = []
+
+        self.EVP_bf_cbc = self._lib.EVP_bf_cbc
+        self.EVP_bf_cbc.restype = ctypes.c_void_p
+        self.EVP_bf_cbc.argtypes = []
+
+        self.EVP_bf_cfb64 = self._lib.EVP_bf_cfb64
+        self.EVP_bf_cfb64.restype = ctypes.c_void_p
+        self.EVP_bf_cfb64.argtypes = []
+
+        self.EVP_rc4 = self._lib.EVP_rc4
+        self.EVP_rc4.restype = ctypes.c_void_p
+        self.EVP_rc4.argtypes = []
+
+        self.EVP_CIPHER_CTX_cleanup = self._lib.EVP_CIPHER_CTX_cleanup
+        self.EVP_CIPHER_CTX_cleanup.restype = ctypes.c_int
+        self.EVP_CIPHER_CTX_cleanup.argtypes = [ctypes.c_void_p]
+
+        self.EVP_CIPHER_CTX_free = self._lib.EVP_CIPHER_CTX_free
+        self.EVP_CIPHER_CTX_free.restype = None
+        self.EVP_CIPHER_CTX_free.argtypes = [ctypes.c_void_p]
+
+        self.EVP_CipherUpdate = self._lib.EVP_CipherUpdate
+        self.EVP_CipherUpdate.restype = ctypes.c_int
+        self.EVP_CipherUpdate.argtypes = [ctypes.c_void_p,
+                                          ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_int]
+
+        self.EVP_CipherFinal_ex = self._lib.EVP_CipherFinal_ex
+        self.EVP_CipherFinal_ex.restype = ctypes.c_int
+        self.EVP_CipherFinal_ex.argtypes = [ctypes.c_void_p,
+                                            ctypes.c_void_p, ctypes.c_void_p]
+
+        self.EVP_DigestInit = self._lib.EVP_DigestInit
+        self.EVP_DigestInit.restype = ctypes.c_int
+        self._lib.EVP_DigestInit.argtypes = [ctypes.c_void_p, ctypes.c_void_p]
+
+        self.EVP_DigestUpdate = self._lib.EVP_DigestUpdate
+        self.EVP_DigestUpdate.restype = ctypes.c_int
+        self.EVP_DigestUpdate.argtypes = [ctypes.c_void_p,
+                                          ctypes.c_void_p, ctypes.c_int]
+
+        self.EVP_DigestFinal = self._lib.EVP_DigestFinal
+        self.EVP_DigestFinal.restype = ctypes.c_int
+        self.EVP_DigestFinal.argtypes = [ctypes.c_void_p,
+                                         ctypes.c_void_p, ctypes.c_void_p]
+
+        self.EVP_ecdsa = self._lib.EVP_ecdsa
+        self._lib.EVP_ecdsa.restype = ctypes.c_void_p
+        self._lib.EVP_ecdsa.argtypes = []
+
+        self.ECDSA_sign = self._lib.ECDSA_sign
+        self.ECDSA_sign.restype = ctypes.c_int
+        self.ECDSA_sign.argtypes = [ctypes.c_int, ctypes.c_void_p,
+                                    ctypes.c_int, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p]
+
+        self.ECDSA_verify = self._lib.ECDSA_verify
+        self.ECDSA_verify.restype = ctypes.c_int
+        self.ECDSA_verify.argtypes = [ctypes.c_int, ctypes.c_void_p,
+                                      ctypes.c_int, ctypes.c_void_p, ctypes.c_int, ctypes.c_void_p]
+
+        self.EVP_MD_CTX_create = self._lib.EVP_MD_CTX_create
+        self.EVP_MD_CTX_create.restype = ctypes.c_void_p
+        self.EVP_MD_CTX_create.argtypes = []
+
+        self.EVP_MD_CTX_init = self._lib.EVP_MD_CTX_init
+        self.EVP_MD_CTX_init.restype = None
+        self.EVP_MD_CTX_init.argtypes = [ctypes.c_void_p]
+
+        self.EVP_MD_CTX_destroy = self._lib.EVP_MD_CTX_destroy
+        self.EVP_MD_CTX_destroy.restype = None
+        self.EVP_MD_CTX_destroy.argtypes = [ctypes.c_void_p]
+
+        self.RAND_bytes = self._lib.RAND_bytes
+        self.RAND_bytes.restype = None
+        self.RAND_bytes.argtypes = [ctypes.c_void_p, ctypes.c_int]
+
+
+        self.EVP_sha256 = self._lib.EVP_sha256
+        self.EVP_sha256.restype = ctypes.c_void_p
+        self.EVP_sha256.argtypes = []
+
+        self.i2o_ECPublicKey = self._lib.i2o_ECPublicKey
+        self.i2o_ECPublicKey.restype = ctypes.c_void_p
+        self.i2o_ECPublicKey.argtypes = [ctypes.c_void_p, ctypes.c_void_p]
+
+        self.EVP_sha512 = self._lib.EVP_sha512
+        self.EVP_sha512.restype = ctypes.c_void_p
+        self.EVP_sha512.argtypes = []
+
+        self.HMAC = self._lib.HMAC
+        self.HMAC.restype = ctypes.c_void_p
+        self.HMAC.argtypes = [ctypes.c_void_p, ctypes.c_void_p, ctypes.c_int,
+                              ctypes.c_void_p, ctypes.c_int, ctypes.c_void_p, ctypes.c_void_p]
+
+        self.PKCS5_PBKDF2_HMAC = self._lib.PKCS5_PBKDF2_HMAC
+        self.PKCS5_PBKDF2_HMAC.restype = ctypes.c_int
+        self.PKCS5_PBKDF2_HMAC.argtypes = [ctypes.c_void_p, ctypes.c_int,
+                                           ctypes.c_void_p, ctypes.c_int,
+                                           ctypes.c_int, ctypes.c_void_p,
+                                           ctypes.c_int, ctypes.c_void_p]
+
+        self._set_ciphers()
+        self._set_curves()
+
+    def _set_ciphers(self):
+        self.cipher_algo = {
+            'aes-128-cbc': CipherName('aes-128-cbc', self.EVP_aes_128_cbc, 16),
+            'aes-256-cbc': CipherName('aes-256-cbc', self.EVP_aes_256_cbc, 16),
+            'aes-128-cfb': CipherName('aes-128-cfb', self.EVP_aes_128_cfb128, 16),
+            'aes-256-cfb': CipherName('aes-256-cfb', self.EVP_aes_256_cfb128, 16),
+            'aes-128-ofb': CipherName('aes-128-ofb', self._lib.EVP_aes_128_ofb, 16),
+            'aes-256-ofb': CipherName('aes-256-ofb', self._lib.EVP_aes_256_ofb, 16),
+            'aes-128-ctr': CipherName('aes-128-ctr', self._lib.EVP_aes_128_ctr, 16),
+            'aes-256-ctr': CipherName('aes-256-ctr', self._lib.EVP_aes_256_ctr, 16),
+            'bf-cfb': CipherName('bf-cfb', self.EVP_bf_cfb64, 8),
+            'bf-cbc': CipherName('bf-cbc', self.EVP_bf_cbc, 8),
+            'rc4': CipherName('rc4', self.EVP_rc4, 128), # 128 is the initialisation size not block size
+        }
+
+    def _set_curves(self):
+        self.curves = {
+            'secp112r1': 704,
+            'secp112r2': 705,
+            'secp128r1': 706,
+            'secp128r2': 707,
+            'secp160k1': 708,
+            'secp160r1': 709,
+            'secp160r2': 710,
+            'secp192k1': 711,
+            'secp224k1': 712,
+            'secp224r1': 713,
+            'secp256k1': 714,
+            'secp384r1': 715,
+            'secp521r1': 716,
+            'sect113r1': 717,
+            'sect113r2': 718,
+            'sect131r1': 719,
+            'sect131r2': 720,
+            'sect163k1': 721,
+            'sect163r1': 722,
+            'sect163r2': 723,
+            'sect193r1': 724,
+            'sect193r2': 725,
+            'sect233k1': 726,
+            'sect233r1': 727,
+            'sect239k1': 728,
+            'sect283k1': 729,
+            'sect283r1': 730,
+            'sect409k1': 731,
+            'sect409r1': 732,
+            'sect571k1': 733,
+            'sect571r1': 734,
+        }
+
+    def BN_num_bytes(self, x):
+        """
+        returns the length of a BN (OpenSSl API)
+        """
+        return int((self.BN_num_bits(x) + 7) / 8)
+
+    def get_cipher(self, name):
+        """
+        returns the OpenSSL cipher instance
+        """
+        if name not in self.cipher_algo:
+            raise Exception("Unknown cipher")
+        return self.cipher_algo[name]
+
+    def get_curve(self, name):
+        """
+        returns the id of a elliptic curve
+        """
+        if name not in self.curves:
+            raise Exception("Unknown curve")
+        return self.curves[name]
+
+    def get_curve_by_id(self, id):
+        """
+        returns the name of a elliptic curve with his id
+        """
+        res = None
+        for i in self.curves:
+            if self.curves[i] == id:
+                res = i
+                break
+        if res is None:
+            raise Exception("Unknown curve")
+        return res
+
+    def rand(self, size):
+        """
+        OpenSSL random function
+        """
+        buffer = self.malloc(0, size)
+        self.RAND_bytes(buffer, size)
+        return buffer.raw
+
+    def malloc(self, data, size):
+        """
+        returns a create_string_buffer (ctypes)
+        """
+        buffer = None
+        if data != 0:
+            if sys.version_info.major == 3 and isinstance(data, type('')):
+                data = data.encode()
+            buffer = self.create_string_buffer(data, size)
+        else:
+            buffer = self.create_string_buffer(size)
+        return buffer
+
+try:
+    OpenSSL = _OpenSSL('libcrypto.so')
+except:
+    try:
+        OpenSSL = _OpenSSL('libeay32.dll')
+    except:
+        try:
+            OpenSSL = _OpenSSL('libcrypto.dylib')
+        except:
+            try:
+                from os import path
+                lib_path = path.join(sys._MEIPASS, "libeay32.dll")
+                OpenSSL = _OpenSSL(lib_path)
+            except:
+                raise Exception("Couldn't load the OpenSSL library. You must install it.")