847 lines
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847 lines
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<article id="content">
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<header>
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<h1 class="title">Module <code>onionr.onionrproofs</code></h1>
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</header>
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<section id="section-intro">
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<p>Onionr - Private P2P Communication</p>
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<p>Proof of work module</p>
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<details class="source">
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<summary>Source code</summary>
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<pre><code class="python">'''
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Onionr - Private P2P Communication
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Proof of work module
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'''
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'''
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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'''
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import multiprocessing, time, math, threading, binascii, sys, json
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import nacl.encoding, nacl.hash, nacl.utils
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import config, logger
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from onionrblocks import onionrblockapi, storagecounter
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from onionrutils import bytesconverter
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from onionrcrypto import hashers
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config.reload()
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def getDifficultyModifier():
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'''returns the difficulty modifier for block storage based
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on a variety of factors, currently only disk use.
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'''
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percentUse = storagecounter.StorageCounter().get_percent()
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difficultyIncrease = math.floor(4 * percentUse) # difficulty increase is a step function
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return difficultyIncrease
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def getDifficultyForNewBlock(data):
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'''
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Get difficulty for block. Accepts size in integer, Block instance, or str/bytes full block contents
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'''
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if isinstance(data, onionrblockapi.Block):
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dataSizeInBytes = len(bytesconverter.str_to_bytes(data.getRaw()))
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else:
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dataSizeInBytes = len(bytesconverter.str_to_bytes(data))
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minDifficulty = config.get('general.minimum_send_pow', 4)
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totalDifficulty = max(minDifficulty, math.floor(dataSizeInBytes / 1000000.0)) + getDifficultyModifier()
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return totalDifficulty
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return retData
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def getHashDifficulty(h: str):
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'''
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Return the amount of leading zeroes in a hex hash string (hexHash)
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'''
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return len(h) - len(h.lstrip('0'))
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def hashMeetsDifficulty(hexHash):
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'''
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Return bool for a hash string to see if it meets pow difficulty defined in config
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'''
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hashDifficulty = getHashDifficulty(hexHash)
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try:
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expected = int(config.get('general.minimum_block_pow'))
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except TypeError:
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raise ValueError('Missing general.minimum_block_pow config')
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return hashDifficulty >= expected
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class DataPOW:
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def __init__(self, data, minDifficulty = 0, threadCount = 1):
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self.data = data
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self.threadCount = threadCount
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self.difficulty = max(minDifficulty, getDifficultyForNewBlock(data))
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self.rounds = 0
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self.hashing = False
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self.foundHash = False
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try:
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self.data = self.data.encode()
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except AttributeError:
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pass
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self.data = nacl.hash.blake2b(self.data)
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logger.info('Computing POW (difficulty: %s)...' % self.difficulty)
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self.mainHash = '0' * 70
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self.puzzle = self.mainHash[0:min(self.difficulty, len(self.mainHash))]
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for i in range(max(1, threadCount)):
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t = threading.Thread(name = 'thread%s' % i, target = self.pow, args = (True,))
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t.start()
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def pow(self, reporting = False):
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startTime = math.floor(time.time())
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self.hashing = True
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self.reporting = reporting
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iFound = False # if current thread is the one that found the answer
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while self.hashing:
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rand = nacl.utils.random()
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token = nacl.hash.blake2b(rand + self.data).decode()
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self.rounds += 1
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#print(token)
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if self.puzzle == token[0:self.difficulty]:
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self.hashing = False
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iFound = True
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break
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if iFound:
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endTime = math.floor(time.time())
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if self.reporting:
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logger.debug('Found token after %s seconds: %s' % (endTime - startTime, token), timestamp=True)
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logger.debug('Round count: %s' % (self.rounds,))
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self.result = (token, rand)
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def shutdown(self):
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self.hashing = False
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self.puzzle = ''
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def changeDifficulty(self, newDiff):
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self.difficulty = newDiff
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def getResult(self):
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'''
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Returns the result then sets to false, useful to automatically clear the result
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'''
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try:
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retVal = self.result
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except AttributeError:
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retVal = False
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self.result = False
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return retVal
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def waitForResult(self):
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'''
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Returns the result only when it has been found, False if not running and not found
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'''
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result = False
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try:
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while True:
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result = self.getResult()
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if not self.hashing:
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break
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else:
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time.sleep(1)
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except KeyboardInterrupt:
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self.shutdown()
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logger.warn('Got keyboard interrupt while waiting for POW result, stopping')
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return result
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class POW:
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def __init__(self, metadata, data, threadCount = 1, minDifficulty=0):
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self.foundHash = False
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self.difficulty = 0
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self.data = data
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self.metadata = metadata
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self.threadCount = threadCount
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self.hashing = False
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json_metadata = json.dumps(metadata).encode()
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try:
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self.data = self.data.encode()
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except AttributeError:
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pass
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if minDifficulty > 0:
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self.difficulty = minDifficulty
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else:
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# Calculate difficulty. Dumb for now, may use good algorithm in the future.
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self.difficulty = getDifficultyForNewBlock(bytes(json_metadata + b'\n' + self.data))
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logger.info('Computing POW (difficulty: %s)...' % (self.difficulty,))
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self.mainHash = '0' * 64
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self.puzzle = self.mainHash[0:min(self.difficulty, len(self.mainHash))]
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for i in range(max(1, threadCount)):
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t = threading.Thread(name = 'thread%s' % i, target = self.pow, args = (True,))
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t.start()
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def pow(self, reporting = False):
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startTime = math.floor(time.time())
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self.hashing = True
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self.reporting = reporting
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iFound = False # if current thread is the one that found the answer
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nonce = int(binascii.hexlify(nacl.utils.random(64)), 16)
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while self.hashing:
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#token = nacl.hash.blake2b(rand + self.data).decode()
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self.metadata['pow'] = nonce
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payload = json.dumps(self.metadata).encode() + b'\n' + self.data
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token = hashers.sha3_hash(payload)
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try:
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# on some versions, token is bytes
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token = token.decode()
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except AttributeError:
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pass
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if self.puzzle == token[0:self.difficulty]:
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self.hashing = False
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iFound = True
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self.result = payload
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break
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nonce += 1
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if iFound:
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endTime = math.floor(time.time())
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if self.reporting:
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logger.debug('Found token after %s seconds: %s' % (endTime - startTime, token), timestamp=True)
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def shutdown(self):
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self.hashing = False
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self.puzzle = ''
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def changeDifficulty(self, newDiff):
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self.difficulty = newDiff
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def getResult(self):
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'''
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Returns the result then sets to false, useful to automatically clear the result
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'''
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try:
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retVal = self.result
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except AttributeError:
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retVal = False
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self.result = False
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return retVal
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def waitForResult(self):
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'''
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Returns the result only when it has been found, False if not running and not found
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'''
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result = False
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try:
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while True:
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result = self.getResult()
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if not self.hashing:
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break
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else:
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time.sleep(1)
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except KeyboardInterrupt:
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self.shutdown()
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logger.warn('Got keyboard interrupt while waiting for POW result, stopping')
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return result</code></pre>
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</details>
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</section>
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<section>
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<h2 class="section-title" id="header-submodules">Sub-modules</h2>
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<dl>
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<dt><code class="name"><a title="onionr.onionrproofs.subprocesspow" href="subprocesspow.html">onionr.onionrproofs.subprocesspow</a></code></dt>
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<dd>
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<section class="desc"><p>Onionr - Private P2P Communication …</p></section>
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|
</dd>
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</dl>
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</section>
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<section>
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</section>
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<section>
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<h2 class="section-title" id="header-functions">Functions</h2>
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<dl>
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|
<dt id="onionr.onionrproofs.getDifficultyForNewBlock"><code class="name flex">
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|
<span>def <span class="ident">getDifficultyForNewBlock</span></span>(<span>data)</span>
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|
</code></dt>
|
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|
<dd>
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|
<section class="desc"><p>Get difficulty for block. Accepts size in integer, Block instance, or str/bytes full block contents</p></section>
|
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|
<details class="source">
|
||
|
<summary>Source code</summary>
|
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|
<pre><code class="python">def getDifficultyForNewBlock(data):
|
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|
'''
|
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|
Get difficulty for block. Accepts size in integer, Block instance, or str/bytes full block contents
|
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|
'''
|
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|
if isinstance(data, onionrblockapi.Block):
|
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|
dataSizeInBytes = len(bytesconverter.str_to_bytes(data.getRaw()))
|
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|
else:
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dataSizeInBytes = len(bytesconverter.str_to_bytes(data))
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|
|
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|
minDifficulty = config.get('general.minimum_send_pow', 4)
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totalDifficulty = max(minDifficulty, math.floor(dataSizeInBytes / 1000000.0)) + getDifficultyModifier()
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|
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return totalDifficulty
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|
|
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return retData</code></pre>
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</details>
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||
|
</dd>
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<dt id="onionr.onionrproofs.getDifficultyModifier"><code class="name flex">
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<span>def <span class="ident">getDifficultyModifier</span></span>(<span>)</span>
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|
</code></dt>
|
||
|
<dd>
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<section class="desc"><p>returns the difficulty modifier for block storage based
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|
on a variety of factors, currently only disk use.</p></section>
|
||
|
<details class="source">
|
||
|
<summary>Source code</summary>
|
||
|
<pre><code class="python">def getDifficultyModifier():
|
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|
'''returns the difficulty modifier for block storage based
|
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|
on a variety of factors, currently only disk use.
|
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|
'''
|
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|
percentUse = storagecounter.StorageCounter().get_percent()
|
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|
difficultyIncrease = math.floor(4 * percentUse) # difficulty increase is a step function
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|
|
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return difficultyIncrease</code></pre>
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</details>
|
||
|
</dd>
|
||
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<dt id="onionr.onionrproofs.getHashDifficulty"><code class="name flex">
|
||
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<span>def <span class="ident">getHashDifficulty</span></span>(<span>h)</span>
|
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|
</code></dt>
|
||
|
<dd>
|
||
|
<section class="desc"><p>Return the amount of leading zeroes in a hex hash string (hexHash)</p></section>
|
||
|
<details class="source">
|
||
|
<summary>Source code</summary>
|
||
|
<pre><code class="python">def getHashDifficulty(h: str):
|
||
|
'''
|
||
|
Return the amount of leading zeroes in a hex hash string (hexHash)
|
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|
'''
|
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|
return len(h) - len(h.lstrip('0'))</code></pre>
|
||
|
</details>
|
||
|
</dd>
|
||
|
<dt id="onionr.onionrproofs.hashMeetsDifficulty"><code class="name flex">
|
||
|
<span>def <span class="ident">hashMeetsDifficulty</span></span>(<span>hexHash)</span>
|
||
|
</code></dt>
|
||
|
<dd>
|
||
|
<section class="desc"><p>Return bool for a hash string to see if it meets pow difficulty defined in config</p></section>
|
||
|
<details class="source">
|
||
|
<summary>Source code</summary>
|
||
|
<pre><code class="python">def hashMeetsDifficulty(hexHash):
|
||
|
'''
|
||
|
Return bool for a hash string to see if it meets pow difficulty defined in config
|
||
|
'''
|
||
|
hashDifficulty = getHashDifficulty(hexHash)
|
||
|
|
||
|
try:
|
||
|
expected = int(config.get('general.minimum_block_pow'))
|
||
|
except TypeError:
|
||
|
raise ValueError('Missing general.minimum_block_pow config')
|
||
|
|
||
|
return hashDifficulty >= expected</code></pre>
|
||
|
</details>
|
||
|
</dd>
|
||
|
</dl>
|
||
|
</section>
|
||
|
<section>
|
||
|
<h2 class="section-title" id="header-classes">Classes</h2>
|
||
|
<dl>
|
||
|
<dt id="onionr.onionrproofs.DataPOW"><code class="flex name class">
|
||
|
<span>class <span class="ident">DataPOW</span></span>
|
||
|
<span>(</span><span>data, minDifficulty=0, threadCount=1)</span>
|
||
|
</code></dt>
|
||
|
<dd>
|
||
|
<section class="desc"></section>
|
||
|
<details class="source">
|
||
|
<summary>Source code</summary>
|
||
|
<pre><code class="python">class DataPOW:
|
||
|
def __init__(self, data, minDifficulty = 0, threadCount = 1):
|
||
|
self.data = data
|
||
|
self.threadCount = threadCount
|
||
|
self.difficulty = max(minDifficulty, getDifficultyForNewBlock(data))
|
||
|
self.rounds = 0
|
||
|
self.hashing = False
|
||
|
self.foundHash = False
|
||
|
|
||
|
try:
|
||
|
self.data = self.data.encode()
|
||
|
except AttributeError:
|
||
|
pass
|
||
|
|
||
|
self.data = nacl.hash.blake2b(self.data)
|
||
|
|
||
|
logger.info('Computing POW (difficulty: %s)...' % self.difficulty)
|
||
|
|
||
|
self.mainHash = '0' * 70
|
||
|
self.puzzle = self.mainHash[0:min(self.difficulty, len(self.mainHash))]
|
||
|
|
||
|
for i in range(max(1, threadCount)):
|
||
|
t = threading.Thread(name = 'thread%s' % i, target = self.pow, args = (True,))
|
||
|
t.start()
|
||
|
|
||
|
def pow(self, reporting = False):
|
||
|
startTime = math.floor(time.time())
|
||
|
self.hashing = True
|
||
|
self.reporting = reporting
|
||
|
iFound = False # if current thread is the one that found the answer
|
||
|
|
||
|
while self.hashing:
|
||
|
rand = nacl.utils.random()
|
||
|
token = nacl.hash.blake2b(rand + self.data).decode()
|
||
|
self.rounds += 1
|
||
|
#print(token)
|
||
|
if self.puzzle == token[0:self.difficulty]:
|
||
|
self.hashing = False
|
||
|
iFound = True
|
||
|
break
|
||
|
|
||
|
if iFound:
|
||
|
endTime = math.floor(time.time())
|
||
|
if self.reporting:
|
||
|
logger.debug('Found token after %s seconds: %s' % (endTime - startTime, token), timestamp=True)
|
||
|
logger.debug('Round count: %s' % (self.rounds,))
|
||
|
self.result = (token, rand)
|
||
|
|
||
|
def shutdown(self):
|
||
|
self.hashing = False
|
||
|
self.puzzle = ''
|
||
|
|
||
|
def changeDifficulty(self, newDiff):
|
||
|
self.difficulty = newDiff
|
||
|
|
||
|
def getResult(self):
|
||
|
'''
|
||
|
Returns the result then sets to false, useful to automatically clear the result
|
||
|
'''
|
||
|
|
||
|
try:
|
||
|
retVal = self.result
|
||
|
except AttributeError:
|
||
|
retVal = False
|
||
|
|
||
|
self.result = False
|
||
|
return retVal
|
||
|
|
||
|
def waitForResult(self):
|
||
|
'''
|
||
|
Returns the result only when it has been found, False if not running and not found
|
||
|
'''
|
||
|
result = False
|
||
|
try:
|
||
|
while True:
|
||
|
result = self.getResult()
|
||
|
if not self.hashing:
|
||
|
break
|
||
|
else:
|
||
|
time.sleep(1)
|
||
|
except KeyboardInterrupt:
|
||
|
self.shutdown()
|
||
|
logger.warn('Got keyboard interrupt while waiting for POW result, stopping')
|
||
|
return result</code></pre>
|
||
|
</details>
|
||
|
<h3>Methods</h3>
|
||
|
<dl>
|
||
|
<dt id="onionr.onionrproofs.DataPOW.changeDifficulty"><code class="name flex">
|
||
|
<span>def <span class="ident">changeDifficulty</span></span>(<span>self, newDiff)</span>
|
||
|
</code></dt>
|
||
|
<dd>
|
||
|
<section class="desc"></section>
|
||
|
<details class="source">
|
||
|
<summary>Source code</summary>
|
||
|
<pre><code class="python">def changeDifficulty(self, newDiff):
|
||
|
self.difficulty = newDiff</code></pre>
|
||
|
</details>
|
||
|
</dd>
|
||
|
<dt id="onionr.onionrproofs.DataPOW.getResult"><code class="name flex">
|
||
|
<span>def <span class="ident">getResult</span></span>(<span>self)</span>
|
||
|
</code></dt>
|
||
|
<dd>
|
||
|
<section class="desc"><p>Returns the result then sets to false, useful to automatically clear the result</p></section>
|
||
|
<details class="source">
|
||
|
<summary>Source code</summary>
|
||
|
<pre><code class="python">def getResult(self):
|
||
|
'''
|
||
|
Returns the result then sets to false, useful to automatically clear the result
|
||
|
'''
|
||
|
|
||
|
try:
|
||
|
retVal = self.result
|
||
|
except AttributeError:
|
||
|
retVal = False
|
||
|
|
||
|
self.result = False
|
||
|
return retVal</code></pre>
|
||
|
</details>
|
||
|
</dd>
|
||
|
<dt id="onionr.onionrproofs.DataPOW.pow"><code class="name flex">
|
||
|
<span>def <span class="ident">pow</span></span>(<span>self, reporting=False)</span>
|
||
|
</code></dt>
|
||
|
<dd>
|
||
|
<section class="desc"></section>
|
||
|
<details class="source">
|
||
|
<summary>Source code</summary>
|
||
|
<pre><code class="python">def pow(self, reporting = False):
|
||
|
startTime = math.floor(time.time())
|
||
|
self.hashing = True
|
||
|
self.reporting = reporting
|
||
|
iFound = False # if current thread is the one that found the answer
|
||
|
|
||
|
while self.hashing:
|
||
|
rand = nacl.utils.random()
|
||
|
token = nacl.hash.blake2b(rand + self.data).decode()
|
||
|
self.rounds += 1
|
||
|
#print(token)
|
||
|
if self.puzzle == token[0:self.difficulty]:
|
||
|
self.hashing = False
|
||
|
iFound = True
|
||
|
break
|
||
|
|
||
|
if iFound:
|
||
|
endTime = math.floor(time.time())
|
||
|
if self.reporting:
|
||
|
logger.debug('Found token after %s seconds: %s' % (endTime - startTime, token), timestamp=True)
|
||
|
logger.debug('Round count: %s' % (self.rounds,))
|
||
|
self.result = (token, rand)</code></pre>
|
||
|
</details>
|
||
|
</dd>
|
||
|
<dt id="onionr.onionrproofs.DataPOW.shutdown"><code class="name flex">
|
||
|
<span>def <span class="ident">shutdown</span></span>(<span>self)</span>
|
||
|
</code></dt>
|
||
|
<dd>
|
||
|
<section class="desc"></section>
|
||
|
<details class="source">
|
||
|
<summary>Source code</summary>
|
||
|
<pre><code class="python">def shutdown(self):
|
||
|
self.hashing = False
|
||
|
self.puzzle = ''</code></pre>
|
||
|
</details>
|
||
|
</dd>
|
||
|
<dt id="onionr.onionrproofs.DataPOW.waitForResult"><code class="name flex">
|
||
|
<span>def <span class="ident">waitForResult</span></span>(<span>self)</span>
|
||
|
</code></dt>
|
||
|
<dd>
|
||
|
<section class="desc"><p>Returns the result only when it has been found, False if not running and not found</p></section>
|
||
|
<details class="source">
|
||
|
<summary>Source code</summary>
|
||
|
<pre><code class="python">def waitForResult(self):
|
||
|
'''
|
||
|
Returns the result only when it has been found, False if not running and not found
|
||
|
'''
|
||
|
result = False
|
||
|
try:
|
||
|
while True:
|
||
|
result = self.getResult()
|
||
|
if not self.hashing:
|
||
|
break
|
||
|
else:
|
||
|
time.sleep(1)
|
||
|
except KeyboardInterrupt:
|
||
|
self.shutdown()
|
||
|
logger.warn('Got keyboard interrupt while waiting for POW result, stopping')
|
||
|
return result</code></pre>
|
||
|
</details>
|
||
|
</dd>
|
||
|
</dl>
|
||
|
</dd>
|
||
|
<dt id="onionr.onionrproofs.POW"><code class="flex name class">
|
||
|
<span>class <span class="ident">POW</span></span>
|
||
|
<span>(</span><span>metadata, data, threadCount=1, minDifficulty=0)</span>
|
||
|
</code></dt>
|
||
|
<dd>
|
||
|
<section class="desc"></section>
|
||
|
<details class="source">
|
||
|
<summary>Source code</summary>
|
||
|
<pre><code class="python">class POW:
|
||
|
def __init__(self, metadata, data, threadCount = 1, minDifficulty=0):
|
||
|
self.foundHash = False
|
||
|
self.difficulty = 0
|
||
|
self.data = data
|
||
|
self.metadata = metadata
|
||
|
self.threadCount = threadCount
|
||
|
self.hashing = False
|
||
|
|
||
|
json_metadata = json.dumps(metadata).encode()
|
||
|
|
||
|
try:
|
||
|
self.data = self.data.encode()
|
||
|
except AttributeError:
|
||
|
pass
|
||
|
|
||
|
if minDifficulty > 0:
|
||
|
self.difficulty = minDifficulty
|
||
|
else:
|
||
|
# Calculate difficulty. Dumb for now, may use good algorithm in the future.
|
||
|
self.difficulty = getDifficultyForNewBlock(bytes(json_metadata + b'\n' + self.data))
|
||
|
|
||
|
logger.info('Computing POW (difficulty: %s)...' % (self.difficulty,))
|
||
|
|
||
|
self.mainHash = '0' * 64
|
||
|
self.puzzle = self.mainHash[0:min(self.difficulty, len(self.mainHash))]
|
||
|
|
||
|
for i in range(max(1, threadCount)):
|
||
|
t = threading.Thread(name = 'thread%s' % i, target = self.pow, args = (True,))
|
||
|
t.start()
|
||
|
|
||
|
def pow(self, reporting = False):
|
||
|
startTime = math.floor(time.time())
|
||
|
self.hashing = True
|
||
|
self.reporting = reporting
|
||
|
iFound = False # if current thread is the one that found the answer
|
||
|
nonce = int(binascii.hexlify(nacl.utils.random(64)), 16)
|
||
|
while self.hashing:
|
||
|
#token = nacl.hash.blake2b(rand + self.data).decode()
|
||
|
self.metadata['pow'] = nonce
|
||
|
payload = json.dumps(self.metadata).encode() + b'\n' + self.data
|
||
|
token = hashers.sha3_hash(payload)
|
||
|
try:
|
||
|
# on some versions, token is bytes
|
||
|
token = token.decode()
|
||
|
except AttributeError:
|
||
|
pass
|
||
|
if self.puzzle == token[0:self.difficulty]:
|
||
|
self.hashing = False
|
||
|
iFound = True
|
||
|
self.result = payload
|
||
|
break
|
||
|
nonce += 1
|
||
|
|
||
|
if iFound:
|
||
|
endTime = math.floor(time.time())
|
||
|
if self.reporting:
|
||
|
logger.debug('Found token after %s seconds: %s' % (endTime - startTime, token), timestamp=True)
|
||
|
|
||
|
def shutdown(self):
|
||
|
self.hashing = False
|
||
|
self.puzzle = ''
|
||
|
|
||
|
def changeDifficulty(self, newDiff):
|
||
|
self.difficulty = newDiff
|
||
|
|
||
|
def getResult(self):
|
||
|
'''
|
||
|
Returns the result then sets to false, useful to automatically clear the result
|
||
|
'''
|
||
|
|
||
|
try:
|
||
|
retVal = self.result
|
||
|
except AttributeError:
|
||
|
retVal = False
|
||
|
|
||
|
self.result = False
|
||
|
return retVal
|
||
|
|
||
|
def waitForResult(self):
|
||
|
'''
|
||
|
Returns the result only when it has been found, False if not running and not found
|
||
|
'''
|
||
|
result = False
|
||
|
try:
|
||
|
while True:
|
||
|
result = self.getResult()
|
||
|
if not self.hashing:
|
||
|
break
|
||
|
else:
|
||
|
time.sleep(1)
|
||
|
except KeyboardInterrupt:
|
||
|
self.shutdown()
|
||
|
logger.warn('Got keyboard interrupt while waiting for POW result, stopping')
|
||
|
return result</code></pre>
|
||
|
</details>
|
||
|
<h3>Methods</h3>
|
||
|
<dl>
|
||
|
<dt id="onionr.onionrproofs.POW.changeDifficulty"><code class="name flex">
|
||
|
<span>def <span class="ident">changeDifficulty</span></span>(<span>self, newDiff)</span>
|
||
|
</code></dt>
|
||
|
<dd>
|
||
|
<section class="desc"></section>
|
||
|
<details class="source">
|
||
|
<summary>Source code</summary>
|
||
|
<pre><code class="python">def changeDifficulty(self, newDiff):
|
||
|
self.difficulty = newDiff</code></pre>
|
||
|
</details>
|
||
|
</dd>
|
||
|
<dt id="onionr.onionrproofs.POW.getResult"><code class="name flex">
|
||
|
<span>def <span class="ident">getResult</span></span>(<span>self)</span>
|
||
|
</code></dt>
|
||
|
<dd>
|
||
|
<section class="desc"><p>Returns the result then sets to false, useful to automatically clear the result</p></section>
|
||
|
<details class="source">
|
||
|
<summary>Source code</summary>
|
||
|
<pre><code class="python">def getResult(self):
|
||
|
'''
|
||
|
Returns the result then sets to false, useful to automatically clear the result
|
||
|
'''
|
||
|
|
||
|
try:
|
||
|
retVal = self.result
|
||
|
except AttributeError:
|
||
|
retVal = False
|
||
|
|
||
|
self.result = False
|
||
|
return retVal</code></pre>
|
||
|
</details>
|
||
|
</dd>
|
||
|
<dt id="onionr.onionrproofs.POW.pow"><code class="name flex">
|
||
|
<span>def <span class="ident">pow</span></span>(<span>self, reporting=False)</span>
|
||
|
</code></dt>
|
||
|
<dd>
|
||
|
<section class="desc"></section>
|
||
|
<details class="source">
|
||
|
<summary>Source code</summary>
|
||
|
<pre><code class="python">def pow(self, reporting = False):
|
||
|
startTime = math.floor(time.time())
|
||
|
self.hashing = True
|
||
|
self.reporting = reporting
|
||
|
iFound = False # if current thread is the one that found the answer
|
||
|
nonce = int(binascii.hexlify(nacl.utils.random(64)), 16)
|
||
|
while self.hashing:
|
||
|
#token = nacl.hash.blake2b(rand + self.data).decode()
|
||
|
self.metadata['pow'] = nonce
|
||
|
payload = json.dumps(self.metadata).encode() + b'\n' + self.data
|
||
|
token = hashers.sha3_hash(payload)
|
||
|
try:
|
||
|
# on some versions, token is bytes
|
||
|
token = token.decode()
|
||
|
except AttributeError:
|
||
|
pass
|
||
|
if self.puzzle == token[0:self.difficulty]:
|
||
|
self.hashing = False
|
||
|
iFound = True
|
||
|
self.result = payload
|
||
|
break
|
||
|
nonce += 1
|
||
|
|
||
|
if iFound:
|
||
|
endTime = math.floor(time.time())
|
||
|
if self.reporting:
|
||
|
logger.debug('Found token after %s seconds: %s' % (endTime - startTime, token), timestamp=True)</code></pre>
|
||
|
</details>
|
||
|
</dd>
|
||
|
<dt id="onionr.onionrproofs.POW.shutdown"><code class="name flex">
|
||
|
<span>def <span class="ident">shutdown</span></span>(<span>self)</span>
|
||
|
</code></dt>
|
||
|
<dd>
|
||
|
<section class="desc"></section>
|
||
|
<details class="source">
|
||
|
<summary>Source code</summary>
|
||
|
<pre><code class="python">def shutdown(self):
|
||
|
self.hashing = False
|
||
|
self.puzzle = ''</code></pre>
|
||
|
</details>
|
||
|
</dd>
|
||
|
<dt id="onionr.onionrproofs.POW.waitForResult"><code class="name flex">
|
||
|
<span>def <span class="ident">waitForResult</span></span>(<span>self)</span>
|
||
|
</code></dt>
|
||
|
<dd>
|
||
|
<section class="desc"><p>Returns the result only when it has been found, False if not running and not found</p></section>
|
||
|
<details class="source">
|
||
|
<summary>Source code</summary>
|
||
|
<pre><code class="python">def waitForResult(self):
|
||
|
'''
|
||
|
Returns the result only when it has been found, False if not running and not found
|
||
|
'''
|
||
|
result = False
|
||
|
try:
|
||
|
while True:
|
||
|
result = self.getResult()
|
||
|
if not self.hashing:
|
||
|
break
|
||
|
else:
|
||
|
time.sleep(1)
|
||
|
except KeyboardInterrupt:
|
||
|
self.shutdown()
|
||
|
logger.warn('Got keyboard interrupt while waiting for POW result, stopping')
|
||
|
return result</code></pre>
|
||
|
</details>
|
||
|
</dd>
|
||
|
</dl>
|
||
|
</dd>
|
||
|
</dl>
|
||
|
</section>
|
||
|
</article>
|
||
|
<nav id="sidebar">
|
||
|
<h1>Index</h1>
|
||
|
<div class="toc">
|
||
|
<ul></ul>
|
||
|
</div>
|
||
|
<ul id="index">
|
||
|
<li><h3>Super-module</h3>
|
||
|
<ul>
|
||
|
<li><code><a title="onionr" href="../index.html">onionr</a></code></li>
|
||
|
</ul>
|
||
|
</li>
|
||
|
<li><h3><a href="#header-submodules">Sub-modules</a></h3>
|
||
|
<ul>
|
||
|
<li><code><a title="onionr.onionrproofs.subprocesspow" href="subprocesspow.html">onionr.onionrproofs.subprocesspow</a></code></li>
|
||
|
</ul>
|
||
|
</li>
|
||
|
<li><h3><a href="#header-functions">Functions</a></h3>
|
||
|
<ul class="">
|
||
|
<li><code><a title="onionr.onionrproofs.getDifficultyForNewBlock" href="#onionr.onionrproofs.getDifficultyForNewBlock">getDifficultyForNewBlock</a></code></li>
|
||
|
<li><code><a title="onionr.onionrproofs.getDifficultyModifier" href="#onionr.onionrproofs.getDifficultyModifier">getDifficultyModifier</a></code></li>
|
||
|
<li><code><a title="onionr.onionrproofs.getHashDifficulty" href="#onionr.onionrproofs.getHashDifficulty">getHashDifficulty</a></code></li>
|
||
|
<li><code><a title="onionr.onionrproofs.hashMeetsDifficulty" href="#onionr.onionrproofs.hashMeetsDifficulty">hashMeetsDifficulty</a></code></li>
|
||
|
</ul>
|
||
|
</li>
|
||
|
<li><h3><a href="#header-classes">Classes</a></h3>
|
||
|
<ul>
|
||
|
<li>
|
||
|
<h4><code><a title="onionr.onionrproofs.DataPOW" href="#onionr.onionrproofs.DataPOW">DataPOW</a></code></h4>
|
||
|
<ul class="">
|
||
|
<li><code><a title="onionr.onionrproofs.DataPOW.changeDifficulty" href="#onionr.onionrproofs.DataPOW.changeDifficulty">changeDifficulty</a></code></li>
|
||
|
<li><code><a title="onionr.onionrproofs.DataPOW.getResult" href="#onionr.onionrproofs.DataPOW.getResult">getResult</a></code></li>
|
||
|
<li><code><a title="onionr.onionrproofs.DataPOW.pow" href="#onionr.onionrproofs.DataPOW.pow">pow</a></code></li>
|
||
|
<li><code><a title="onionr.onionrproofs.DataPOW.shutdown" href="#onionr.onionrproofs.DataPOW.shutdown">shutdown</a></code></li>
|
||
|
<li><code><a title="onionr.onionrproofs.DataPOW.waitForResult" href="#onionr.onionrproofs.DataPOW.waitForResult">waitForResult</a></code></li>
|
||
|
</ul>
|
||
|
</li>
|
||
|
<li>
|
||
|
<h4><code><a title="onionr.onionrproofs.POW" href="#onionr.onionrproofs.POW">POW</a></code></h4>
|
||
|
<ul class="">
|
||
|
<li><code><a title="onionr.onionrproofs.POW.changeDifficulty" href="#onionr.onionrproofs.POW.changeDifficulty">changeDifficulty</a></code></li>
|
||
|
<li><code><a title="onionr.onionrproofs.POW.getResult" href="#onionr.onionrproofs.POW.getResult">getResult</a></code></li>
|
||
|
<li><code><a title="onionr.onionrproofs.POW.pow" href="#onionr.onionrproofs.POW.pow">pow</a></code></li>
|
||
|
<li><code><a title="onionr.onionrproofs.POW.shutdown" href="#onionr.onionrproofs.POW.shutdown">shutdown</a></code></li>
|
||
|
<li><code><a title="onionr.onionrproofs.POW.waitForResult" href="#onionr.onionrproofs.POW.waitForResult">waitForResult</a></code></li>
|
||
|
</ul>
|
||
|
</li>
|
||
|
</ul>
|
||
|
</li>
|
||
|
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