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