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<article id="content">
<header>
<h1 class="title">Module <code>onionr.onionrproofs</code></h1>
</header>
<section id="section-intro">
<p>Onionr - Private P2P Communication</p>
<p>Proof of work module</p>
<details class="source">
<summary>Source code</summary>
<pre><code class="python">&#39;&#39;&#39;
    Onionr - Private P2P Communication

    Proof of work module
&#39;&#39;&#39;
&#39;&#39;&#39;
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see &lt;https://www.gnu.org/licenses/&gt;.
&#39;&#39;&#39;
import multiprocessing, time, math, threading, binascii, sys, json
import nacl.encoding, nacl.hash, nacl.utils

import config, logger
from onionrblocks import onionrblockapi, storagecounter
from onionrutils import bytesconverter
from onionrcrypto import hashers
config.reload()

def getDifficultyModifier():
    &#39;&#39;&#39;returns the difficulty modifier for block storage based 
    on a variety of factors, currently only disk use.
    &#39;&#39;&#39;
    percentUse = storagecounter.StorageCounter().get_percent()
    difficultyIncrease = math.floor(4 * percentUse) # difficulty increase is a step function

    return difficultyIncrease

def getDifficultyForNewBlock(data):
    &#39;&#39;&#39;
    Get difficulty for block. Accepts size in integer, Block instance, or str/bytes full block contents
    &#39;&#39;&#39;
    if isinstance(data, onionrblockapi.Block):
        dataSizeInBytes = len(bytesconverter.str_to_bytes(data.getRaw()))
    else:
        dataSizeInBytes = len(bytesconverter.str_to_bytes(data))

    minDifficulty = config.get(&#39;general.minimum_send_pow&#39;, 4)
    totalDifficulty = max(minDifficulty, math.floor(dataSizeInBytes / 1000000.0)) + getDifficultyModifier()

    return totalDifficulty

    return retData

def getHashDifficulty(h: str):
    &#39;&#39;&#39;
        Return the amount of leading zeroes in a hex hash string (hexHash)
    &#39;&#39;&#39;
    return len(h) - len(h.lstrip(&#39;0&#39;))

def hashMeetsDifficulty(hexHash):
    &#39;&#39;&#39;
        Return bool for a hash string to see if it meets pow difficulty defined in config
    &#39;&#39;&#39;
    hashDifficulty = getHashDifficulty(hexHash)

    try:
        expected = int(config.get(&#39;general.minimum_block_pow&#39;))
    except TypeError:
        raise ValueError(&#39;Missing general.minimum_block_pow config&#39;)

    return hashDifficulty &gt;= expected

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(&#39;Computing POW (difficulty: %s)...&#39; % self.difficulty)

        self.mainHash = &#39;0&#39; * 70
        self.puzzle = self.mainHash[0:min(self.difficulty, len(self.mainHash))]
        
        for i in range(max(1, threadCount)):
            t = threading.Thread(name = &#39;thread%s&#39; % 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(&#39;Found token after %s seconds: %s&#39; % (endTime - startTime, token), timestamp=True)
                logger.debug(&#39;Round count: %s&#39; % (self.rounds,))
            self.result = (token, rand)

    def shutdown(self):
        self.hashing = False
        self.puzzle = &#39;&#39;

    def changeDifficulty(self, newDiff):
        self.difficulty = newDiff

    def getResult(self):
        &#39;&#39;&#39;
            Returns the result then sets to false, useful to automatically clear the result
        &#39;&#39;&#39;
        
        try:
            retVal = self.result
        except AttributeError:
            retVal = False
            
        self.result = False
        return retVal

    def waitForResult(self):
        &#39;&#39;&#39;
            Returns the result only when it has been found, False if not running and not found
        &#39;&#39;&#39;
        result = False
        try:
            while True:
                result = self.getResult()
                if not self.hashing:
                    break
                else:
                    time.sleep(1)
        except KeyboardInterrupt:
            self.shutdown()
            logger.warn(&#39;Got keyboard interrupt while waiting for POW result, stopping&#39;)
        return result

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 &gt; 0:
            self.difficulty = minDifficulty
        else:
            # Calculate difficulty. Dumb for now, may use good algorithm in the future.
            self.difficulty = getDifficultyForNewBlock(bytes(json_metadata + b&#39;\n&#39; + self.data))
            
        logger.info(&#39;Computing POW (difficulty: %s)...&#39; % (self.difficulty,))

        self.mainHash = &#39;0&#39; * 64
        self.puzzle = self.mainHash[0:min(self.difficulty, len(self.mainHash))]

        for i in range(max(1, threadCount)):
            t = threading.Thread(name = &#39;thread%s&#39; % 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[&#39;pow&#39;] = nonce
            payload = json.dumps(self.metadata).encode() + b&#39;\n&#39; + 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(&#39;Found token after %s seconds: %s&#39; % (endTime - startTime, token), timestamp=True)

    def shutdown(self):
        self.hashing = False
        self.puzzle = &#39;&#39;

    def changeDifficulty(self, newDiff):
        self.difficulty = newDiff

    def getResult(self):
        &#39;&#39;&#39;
            Returns the result then sets to false, useful to automatically clear the result
        &#39;&#39;&#39;
        
        try:
            retVal = self.result
        except AttributeError:
            retVal = False
            
        self.result = False
        return retVal

    def waitForResult(self):
        &#39;&#39;&#39;
            Returns the result only when it has been found, False if not running and not found
        &#39;&#39;&#39;
        result = False
        try:
            while True:
                result = self.getResult()
                if not self.hashing:
                    break
                else:
                    time.sleep(1)
        except KeyboardInterrupt:
            self.shutdown()
            logger.warn(&#39;Got keyboard interrupt while waiting for POW result, stopping&#39;)
        return result</code></pre>
</details>
</section>
<section>
<h2 class="section-title" id="header-submodules">Sub-modules</h2>
<dl>
<dt><code class="name"><a title="onionr.onionrproofs.subprocesspow" href="subprocesspow.html">onionr.onionrproofs.subprocesspow</a></code></dt>
<dd>
<section class="desc"><p>Onionr - Private P2P Communication …</p></section>
</dd>
</dl>
</section>
<section>
</section>
<section>
<h2 class="section-title" id="header-functions">Functions</h2>
<dl>
<dt id="onionr.onionrproofs.getDifficultyForNewBlock"><code class="name flex">
<span>def <span class="ident">getDifficultyForNewBlock</span></span>(<span>data)</span>
</code></dt>
<dd>
<section class="desc"><p>Get difficulty for block. Accepts size in integer, Block instance, or str/bytes full block contents</p></section>
<details class="source">
<summary>Source code</summary>
<pre><code class="python">def getDifficultyForNewBlock(data):
    &#39;&#39;&#39;
    Get difficulty for block. Accepts size in integer, Block instance, or str/bytes full block contents
    &#39;&#39;&#39;
    if isinstance(data, onionrblockapi.Block):
        dataSizeInBytes = len(bytesconverter.str_to_bytes(data.getRaw()))
    else:
        dataSizeInBytes = len(bytesconverter.str_to_bytes(data))

    minDifficulty = config.get(&#39;general.minimum_send_pow&#39;, 4)
    totalDifficulty = max(minDifficulty, math.floor(dataSizeInBytes / 1000000.0)) + getDifficultyModifier()

    return totalDifficulty

    return retData</code></pre>
</details>
</dd>
<dt id="onionr.onionrproofs.getDifficultyModifier"><code class="name flex">
<span>def <span class="ident">getDifficultyModifier</span></span>(<span>)</span>
</code></dt>
<dd>
<section class="desc"><p>returns the difficulty modifier for block storage based
on a variety of factors, currently only disk use.</p></section>
<details class="source">
<summary>Source code</summary>
<pre><code class="python">def getDifficultyModifier():
    &#39;&#39;&#39;returns the difficulty modifier for block storage based 
    on a variety of factors, currently only disk use.
    &#39;&#39;&#39;
    percentUse = storagecounter.StorageCounter().get_percent()
    difficultyIncrease = math.floor(4 * percentUse) # difficulty increase is a step function

    return difficultyIncrease</code></pre>
</details>
</dd>
<dt id="onionr.onionrproofs.getHashDifficulty"><code class="name flex">
<span>def <span class="ident">getHashDifficulty</span></span>(<span>h)</span>
</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):
    &#39;&#39;&#39;
        Return the amount of leading zeroes in a hex hash string (hexHash)
    &#39;&#39;&#39;
    return len(h) - len(h.lstrip(&#39;0&#39;))</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):
    &#39;&#39;&#39;
        Return bool for a hash string to see if it meets pow difficulty defined in config
    &#39;&#39;&#39;
    hashDifficulty = getHashDifficulty(hexHash)

    try:
        expected = int(config.get(&#39;general.minimum_block_pow&#39;))
    except TypeError:
        raise ValueError(&#39;Missing general.minimum_block_pow config&#39;)

    return hashDifficulty &gt;= 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(&#39;Computing POW (difficulty: %s)...&#39; % self.difficulty)

        self.mainHash = &#39;0&#39; * 70
        self.puzzle = self.mainHash[0:min(self.difficulty, len(self.mainHash))]
        
        for i in range(max(1, threadCount)):
            t = threading.Thread(name = &#39;thread%s&#39; % 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(&#39;Found token after %s seconds: %s&#39; % (endTime - startTime, token), timestamp=True)
                logger.debug(&#39;Round count: %s&#39; % (self.rounds,))
            self.result = (token, rand)

    def shutdown(self):
        self.hashing = False
        self.puzzle = &#39;&#39;

    def changeDifficulty(self, newDiff):
        self.difficulty = newDiff

    def getResult(self):
        &#39;&#39;&#39;
            Returns the result then sets to false, useful to automatically clear the result
        &#39;&#39;&#39;
        
        try:
            retVal = self.result
        except AttributeError:
            retVal = False
            
        self.result = False
        return retVal

    def waitForResult(self):
        &#39;&#39;&#39;
            Returns the result only when it has been found, False if not running and not found
        &#39;&#39;&#39;
        result = False
        try:
            while True:
                result = self.getResult()
                if not self.hashing:
                    break
                else:
                    time.sleep(1)
        except KeyboardInterrupt:
            self.shutdown()
            logger.warn(&#39;Got keyboard interrupt while waiting for POW result, stopping&#39;)
        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):
    &#39;&#39;&#39;
        Returns the result then sets to false, useful to automatically clear the result
    &#39;&#39;&#39;
    
    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(&#39;Found token after %s seconds: %s&#39; % (endTime - startTime, token), timestamp=True)
            logger.debug(&#39;Round count: %s&#39; % (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 = &#39;&#39;</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):
    &#39;&#39;&#39;
        Returns the result only when it has been found, False if not running and not found
    &#39;&#39;&#39;
    result = False
    try:
        while True:
            result = self.getResult()
            if not self.hashing:
                break
            else:
                time.sleep(1)
    except KeyboardInterrupt:
        self.shutdown()
        logger.warn(&#39;Got keyboard interrupt while waiting for POW result, stopping&#39;)
    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 &gt; 0:
            self.difficulty = minDifficulty
        else:
            # Calculate difficulty. Dumb for now, may use good algorithm in the future.
            self.difficulty = getDifficultyForNewBlock(bytes(json_metadata + b&#39;\n&#39; + self.data))
            
        logger.info(&#39;Computing POW (difficulty: %s)...&#39; % (self.difficulty,))

        self.mainHash = &#39;0&#39; * 64
        self.puzzle = self.mainHash[0:min(self.difficulty, len(self.mainHash))]

        for i in range(max(1, threadCount)):
            t = threading.Thread(name = &#39;thread%s&#39; % 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[&#39;pow&#39;] = nonce
            payload = json.dumps(self.metadata).encode() + b&#39;\n&#39; + 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(&#39;Found token after %s seconds: %s&#39; % (endTime - startTime, token), timestamp=True)

    def shutdown(self):
        self.hashing = False
        self.puzzle = &#39;&#39;

    def changeDifficulty(self, newDiff):
        self.difficulty = newDiff

    def getResult(self):
        &#39;&#39;&#39;
            Returns the result then sets to false, useful to automatically clear the result
        &#39;&#39;&#39;
        
        try:
            retVal = self.result
        except AttributeError:
            retVal = False
            
        self.result = False
        return retVal

    def waitForResult(self):
        &#39;&#39;&#39;
            Returns the result only when it has been found, False if not running and not found
        &#39;&#39;&#39;
        result = False
        try:
            while True:
                result = self.getResult()
                if not self.hashing:
                    break
                else:
                    time.sleep(1)
        except KeyboardInterrupt:
            self.shutdown()
            logger.warn(&#39;Got keyboard interrupt while waiting for POW result, stopping&#39;)
        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):
    &#39;&#39;&#39;
        Returns the result then sets to false, useful to automatically clear the result
    &#39;&#39;&#39;
    
    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[&#39;pow&#39;] = nonce
        payload = json.dumps(self.metadata).encode() + b&#39;\n&#39; + 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(&#39;Found token after %s seconds: %s&#39; % (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 = &#39;&#39;</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):
    &#39;&#39;&#39;
        Returns the result only when it has been found, False if not running and not found
    &#39;&#39;&#39;
    result = False
    try:
        while True:
            result = self.getResult()
            if not self.hashing:
                break
            else:
                time.sleep(1)
    except KeyboardInterrupt:
        self.shutdown()
        logger.warn(&#39;Got keyboard interrupt while waiting for POW result, stopping&#39;)
    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>
</ul>
</nav>
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