""" A thread for creating addresses """ import hashlib import time from binascii import hexlify import defaults import highlevelcrypto import queues import shared import state import tr from addresses import decodeAddress, encodeAddress, encodeVarint from bmconfigparser import BMConfigParser from fallback import RIPEMD160Hash from network import StoppableThread from pyelliptic import arithmetic from pyelliptic.openssl import OpenSSL from six.moves import configparser, queue class addressGenerator(StoppableThread): """A thread for creating addresses""" name = "addressGenerator" def stopThread(self): try: queues.addressGeneratorQueue.put(("stopThread", "data")) except queue.Full: self.logger.error('addressGeneratorQueue is Full') super(addressGenerator, self).stopThread() def run(self): """ Process the requests for addresses generation from `.queues.addressGeneratorQueue` """ # pylint: disable=too-many-locals, too-many-branches # pylint: disable=protected-access, too-many-statements while state.shutdown == 0: queueValue = queues.addressGeneratorQueue.get() nonceTrialsPerByte = 0 payloadLengthExtraBytes = 0 live = True if queueValue[0] == 'createChan': command, addressVersionNumber, streamNumber, label, \ deterministicPassphrase, live = queueValue eighteenByteRipe = False numberOfAddressesToMake = 1 numberOfNullBytesDemandedOnFrontOfRipeHash = 1 elif queueValue[0] == 'joinChan': command, chanAddress, label, deterministicPassphrase, \ live = queueValue eighteenByteRipe = False addressVersionNumber = decodeAddress(chanAddress)[1] streamNumber = decodeAddress(chanAddress)[2] numberOfAddressesToMake = 1 numberOfNullBytesDemandedOnFrontOfRipeHash = 1 elif len(queueValue) == 7: command, addressVersionNumber, streamNumber, label, \ numberOfAddressesToMake, deterministicPassphrase, \ eighteenByteRipe = queueValue numberOfNullBytesDemandedOnFrontOfRipeHash = \ BMConfigParser().safeGetInt( 'bitmessagesettings', 'numberofnullbytesonaddress', 2 if eighteenByteRipe else 1 ) elif len(queueValue) == 9: command, addressVersionNumber, streamNumber, label, \ numberOfAddressesToMake, deterministicPassphrase, \ eighteenByteRipe, nonceTrialsPerByte, \ payloadLengthExtraBytes = queueValue numberOfNullBytesDemandedOnFrontOfRipeHash = \ BMConfigParser().safeGetInt( 'bitmessagesettings', 'numberofnullbytesonaddress', 2 if eighteenByteRipe else 1 ) elif queueValue[0] == 'stopThread': break else: self.logger.error( 'Programming error: A structure with the wrong number' ' of values was passed into the addressGeneratorQueue.' ' Here is the queueValue: %r\n', queueValue) if addressVersionNumber < 3 or addressVersionNumber > 4: self.logger.error( 'Program error: For some reason the address generator' ' queue has been given a request to create at least' ' one version %s address which it cannot do.\n', addressVersionNumber) if nonceTrialsPerByte == 0: nonceTrialsPerByte = BMConfigParser().getint( 'bitmessagesettings', 'defaultnoncetrialsperbyte') if nonceTrialsPerByte < \ defaults.networkDefaultProofOfWorkNonceTrialsPerByte: nonceTrialsPerByte = \ defaults.networkDefaultProofOfWorkNonceTrialsPerByte if payloadLengthExtraBytes == 0: payloadLengthExtraBytes = BMConfigParser().getint( 'bitmessagesettings', 'defaultpayloadlengthextrabytes') if payloadLengthExtraBytes < \ defaults.networkDefaultPayloadLengthExtraBytes: payloadLengthExtraBytes = \ defaults.networkDefaultPayloadLengthExtraBytes if command == 'createRandomAddress': queues.UISignalQueue.put(( 'updateStatusBar', tr._translate( "MainWindow", "Generating one new address") )) # 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. startTime = time.time() numberOfAddressesWeHadToMakeBeforeWeFoundOneWithTheCorrectRipePrefix = 0 potentialPrivSigningKey = OpenSSL.rand(32) potentialPubSigningKey = highlevelcrypto.pointMult( potentialPrivSigningKey) while True: numberOfAddressesWeHadToMakeBeforeWeFoundOneWithTheCorrectRipePrefix += 1 potentialPrivEncryptionKey = OpenSSL.rand(32) potentialPubEncryptionKey = highlevelcrypto.pointMult( potentialPrivEncryptionKey) sha = hashlib.new('sha512') sha.update( potentialPubSigningKey + potentialPubEncryptionKey) ripe = RIPEMD160Hash(sha.digest()).digest() if ( ripe[:numberOfNullBytesDemandedOnFrontOfRipeHash] == '\x00' * numberOfNullBytesDemandedOnFrontOfRipeHash ): break self.logger.info( 'Generated address with ripe digest: %s', hexlify(ripe)) try: self.logger.info( 'Address generator calculated %s addresses at %s' ' addresses per second before finding one with' ' the correct ripe-prefix.', numberOfAddressesWeHadToMakeBeforeWeFoundOneWithTheCorrectRipePrefix, numberOfAddressesWeHadToMakeBeforeWeFoundOneWithTheCorrectRipePrefix / (time.time() - startTime)) except ZeroDivisionError: # The user must have a pretty fast computer. # time.time() - startTime equaled zero. pass address = encodeAddress( addressVersionNumber, streamNumber, ripe) # 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) privEncryptionKey = '\x80' + potentialPrivEncryptionKey checksum = hashlib.sha256(hashlib.sha256( privEncryptionKey).digest()).digest()[0:4] privEncryptionKeyWIF = arithmetic.changebase( privEncryptionKey + checksum, 256, 58) BMConfigParser().add_section(address) BMConfigParser().set(address, 'label', label) BMConfigParser().set(address, 'enabled', 'true') BMConfigParser().set(address, 'decoy', 'false') BMConfigParser().set(address, 'noncetrialsperbyte', str( nonceTrialsPerByte)) BMConfigParser().set(address, 'payloadlengthextrabytes', str( payloadLengthExtraBytes)) BMConfigParser().set( address, 'privsigningkey', privSigningKeyWIF) BMConfigParser().set( address, 'privencryptionkey', privEncryptionKeyWIF) BMConfigParser().save() # The API and the join and create Chan functionality # both need information back from the address generator. queues.apiAddressGeneratorReturnQueue.put(address) queues.UISignalQueue.put(( 'updateStatusBar', tr._translate( "MainWindow", "Done generating address. Doing work necessary" " to broadcast it...") )) queues.UISignalQueue.put(('writeNewAddressToTable', ( label, address, streamNumber))) shared.reloadMyAddressHashes() if addressVersionNumber == 3: queues.workerQueue.put(( 'sendOutOrStoreMyV3Pubkey', ripe)) elif addressVersionNumber == 4: queues.workerQueue.put(( 'sendOutOrStoreMyV4Pubkey', address)) elif command == 'createDeterministicAddresses' \ or command == 'getDeterministicAddress' \ or command == 'createChan' or command == 'joinChan': if not deterministicPassphrase: self.logger.warning( 'You are creating deterministic' ' address(es) using a blank passphrase.' ' Bitmessage will do it but it is rather stupid.') if command == 'createDeterministicAddresses': queues.UISignalQueue.put(( 'updateStatusBar', tr._translate( "MainWindow", "Generating %1 new addresses." ).arg(str(numberOfAddressesToMake)) )) signingKeyNonce = 0 encryptionKeyNonce = 1 # We fill out this list no matter what although we only # need it if we end up passing the info to the API. listOfNewAddressesToSendOutThroughTheAPI = [] for _ in range(numberOfAddressesToMake): # This next section is a little bit strange. We're # going to generate keys over and over until we find # one that has a RIPEMD hash 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. startTime = time.time() numberOfAddressesWeHadToMakeBeforeWeFoundOneWithTheCorrectRipePrefix = 0 while True: numberOfAddressesWeHadToMakeBeforeWeFoundOneWithTheCorrectRipePrefix += 1 potentialPrivSigningKey = hashlib.sha512( deterministicPassphrase + encodeVarint(signingKeyNonce) ).digest()[:32] potentialPrivEncryptionKey = hashlib.sha512( deterministicPassphrase + encodeVarint(encryptionKeyNonce) ).digest()[:32] potentialPubSigningKey = highlevelcrypto.pointMult( potentialPrivSigningKey) potentialPubEncryptionKey = highlevelcrypto.pointMult( potentialPrivEncryptionKey) signingKeyNonce += 2 encryptionKeyNonce += 2 sha = hashlib.new('sha512') sha.update( potentialPubSigningKey + potentialPubEncryptionKey) ripe = RIPEMD160Hash(sha.digest()).digest() if ( ripe[:numberOfNullBytesDemandedOnFrontOfRipeHash] == '\x00' * numberOfNullBytesDemandedOnFrontOfRipeHash ): break self.logger.info( 'Generated address with ripe digest: %s', hexlify(ripe)) try: self.logger.info( 'Address generator calculated %s addresses' ' at %s addresses per second before finding' ' one with the correct ripe-prefix.', numberOfAddressesWeHadToMakeBeforeWeFoundOneWithTheCorrectRipePrefix, numberOfAddressesWeHadToMakeBeforeWeFoundOneWithTheCorrectRipePrefix / (time.time() - startTime) ) except ZeroDivisionError: # The user must have a pretty fast computer. # time.time() - startTime equaled zero. pass address = encodeAddress( addressVersionNumber, streamNumber, ripe) saveAddressToDisk = True # If we are joining an existing chan, let us check # to make sure it matches the provided Bitmessage address if command == 'joinChan': if address != chanAddress: listOfNewAddressesToSendOutThroughTheAPI.append( 'chan name does not match address') saveAddressToDisk = False if command == 'getDeterministicAddress': saveAddressToDisk = False if saveAddressToDisk and live: # 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) privEncryptionKey = '\x80' + \ potentialPrivEncryptionKey checksum = hashlib.sha256(hashlib.sha256( privEncryptionKey).digest()).digest()[0:4] privEncryptionKeyWIF = arithmetic.changebase( privEncryptionKey + checksum, 256, 58) try: BMConfigParser().add_section(address) addressAlreadyExists = False except configparser.DuplicateSectionError: addressAlreadyExists = True if addressAlreadyExists: self.logger.info( '%s already exists. Not adding it again.', address ) queues.UISignalQueue.put(( 'updateStatusBar', tr._translate( "MainWindow", "%1 is already in 'Your Identities'." " Not adding it again." ).arg(address) )) else: self.logger.debug('label: %s', label) BMConfigParser().set(address, 'label', label) BMConfigParser().set(address, 'enabled', 'true') BMConfigParser().set(address, 'decoy', 'false') if command == 'joinChan' \ or command == 'createChan': BMConfigParser().set(address, 'chan', 'true') BMConfigParser().set( address, 'noncetrialsperbyte', str(nonceTrialsPerByte)) BMConfigParser().set( address, 'payloadlengthextrabytes', str(payloadLengthExtraBytes)) BMConfigParser().set( address, 'privSigningKey', privSigningKeyWIF) BMConfigParser().set( address, 'privEncryptionKey', privEncryptionKeyWIF) BMConfigParser().save() queues.UISignalQueue.put(( 'writeNewAddressToTable', (label, address, str(streamNumber)) )) listOfNewAddressesToSendOutThroughTheAPI.append( address) shared.myECCryptorObjects[ripe] = \ highlevelcrypto.makeCryptor( hexlify(potentialPrivEncryptionKey)) shared.myAddressesByHash[ripe] = address tag = hashlib.sha512(hashlib.sha512( encodeVarint(addressVersionNumber) + encodeVarint(streamNumber) + ripe ).digest()).digest()[32:] shared.myAddressesByTag[tag] = address if addressVersionNumber == 3: # If this is a chan address, # the worker thread won't send out # the pubkey over the network. queues.workerQueue.put(( 'sendOutOrStoreMyV3Pubkey', ripe)) elif addressVersionNumber == 4: queues.workerQueue.put(( 'sendOutOrStoreMyV4Pubkey', address)) queues.UISignalQueue.put(( 'updateStatusBar', tr._translate( "MainWindow", "Done generating address") )) elif saveAddressToDisk and not live \ and not BMConfigParser().has_section(address): listOfNewAddressesToSendOutThroughTheAPI.append( address) # Done generating addresses. if command == 'createDeterministicAddresses' \ or command == 'joinChan' or command == 'createChan': queues.apiAddressGeneratorReturnQueue.put( listOfNewAddressesToSendOutThroughTheAPI) elif command == 'getDeterministicAddress': queues.apiAddressGeneratorReturnQueue.put(address) else: raise Exception( "Error in the addressGenerator thread. Thread was" + " given a command it could not understand: " + command) queues.addressGeneratorQueue.task_done()