Bitmessage/PyBitmessage-2024-12-22
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Fixed POW, changed checksum, other minor changes #2

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Atheros1 merged 3 commits from master into master 2012-11-23 09:29:26 +01:00
Conversation 0 Commits 3 Files Changed 14 +8 -8
1 changed files with 8 additions and 8 deletions
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bitmessagemain.py
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@ -892,7 +892,7 @@ class receiveDataThread(QThread):
payload += eString payload += eString
nonce = 0 nonce = 0
trialValue = 99999999999999999 trialValue = 99999999999999999999
target = 2**64 / ((len(payload)+payloadLengthExtraBytes+8) * averageProofOfWorkNonceTrialsPerByte) #The 108 added to the payload length is 8 for the size of the nonce + 50 as an extra penalty simply for having this seperate message exist. target = 2**64 / ((len(payload)+payloadLengthExtraBytes+8) * averageProofOfWorkNonceTrialsPerByte) #The 108 added to the payload length is 8 for the size of the nonce + 50 as an extra penalty simply for having this seperate message exist.
print '(For pubkey message) Doing proof of work...' print '(For pubkey message) Doing proof of work...'
while trialValue > target: while trialValue > target:
@ -1767,7 +1767,7 @@ class singleWorker(QThread):
print 'eString', repr(eString) print 'eString', repr(eString)
nonce = 0 nonce = 0
trialValue = 99999999999999999 trialValue = 99999999999999999999
target = 2**64 / ((len(payload)+payloadLengthExtraBytes+8) * averageProofOfWorkNonceTrialsPerByte) target = 2**64 / ((len(payload)+payloadLengthExtraBytes+8) * averageProofOfWorkNonceTrialsPerByte)
print '(For broadcast message) Doing proof of work...' print '(For broadcast message) Doing proof of work...'
while trialValue > target: while trialValue > target:
@ -1882,19 +1882,19 @@ class singleWorker(QThread):
outfile.close() outfile.close()
nonce = 0 nonce = 0
trialValue = 99999999999999999 trialValue = 99999999999999999999
embeddedTime = pack('>I',(int(time.time()))) embeddedTime = pack('>I',(int(time.time())))
encodedStreamNumber = encodeVarint(toStreamNumber) encodedStreamNumber = encodeVarint(toStreamNumber)
#We are now dropping the unencrypted data in payload since it has already been encrypted and replacing it with the encrypted payload that we will send out. #We are now dropping the unencrypted data in payload since it has already been encrypted and replacing it with the encrypted payload that we will send out.
payload = embeddedTime + encodedStreamNumber + encrypted payload = embeddedTime + encodedStreamNumber + encrypted
target = 2**64 / ((len(payload)+payloadLengthExtraBytes+8) * averageProofOfWorkNonceTrialsPerByte) target = 2**64 / ((len(payload)+payloadLengthExtraBytes+8) * averageProofOfWorkNonceTrialsPerByte)
print '(For msg message) Doing proof of work...' print '(For msg message) Doing proof of work. Target:', target
print 'target', target powStartTime = time.time()
while trialValue > target: while trialValue > target:
nonce += 1 nonce += 1
trialValue, = unpack('>Q',hashlib.sha512(hashlib.sha512(pack('>Q',nonce) + payload).digest()).digest()[4:12]) trialValue, = unpack('>Q',hashlib.sha512(hashlib.sha512(pack('>Q',nonce) + payload).digest()).digest()[4:12])
print '(For msg message) Found proof of work', trialValue, 'Nonce:', nonce print '(For msg message) Found proof of work', trialValue, 'Nonce:', nonce
print 'POW took', int(time.time()-powStartTime), 'seconds.', nonce/(time.time()-powStartTime), 'nonce trials per second.'
payload = pack('>Q',nonce) + payload payload = pack('>Q',nonce) + payload
inventoryHash = calculateInventoryHash(payload) inventoryHash = calculateInventoryHash(payload)
@ -1931,7 +1931,7 @@ class singleWorker(QThread):
payload += encodeVarint(streamNumber) payload += encodeVarint(streamNumber)
payload += ripe payload += ripe
nonce = 0 nonce = 0
trialValue = 99999999999999999 trialValue = 99999999999999999999
#print 'trial value', trialValue #print 'trial value', trialValue
statusbar = 'Doing the computations necessary to request the recipient''s public key. (Doing the proof-of-work.)' statusbar = 'Doing the computations necessary to request the recipient''s public key. (Doing the proof-of-work.)'
self.emit(SIGNAL("updateStatusBar(PyQt_PyObject)"),statusbar) self.emit(SIGNAL("updateStatusBar(PyQt_PyObject)"),statusbar)
@ -1962,7 +1962,7 @@ class singleWorker(QThread):
def generateFullAckMessage(self,ackdata,toStreamNumber): def generateFullAckMessage(self,ackdata,toStreamNumber):
nonce = 0 nonce = 0
trialValue = 99999999999999999 trialValue = 99999999999999999999
embeddedTime = pack('>I',(int(time.time()))) embeddedTime = pack('>I',(int(time.time())))
encodedStreamNumber = encodeVarint(toStreamNumber) encodedStreamNumber = encodeVarint(toStreamNumber)
payload = embeddedTime + encodedStreamNumber + ackdata payload = embeddedTime + encodedStreamNumber + ackdata