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dingoskydingosky
committedAug 14, 2017
Examples
From README
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-180
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‎.gitignore

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node_modules
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*~
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.DS_Store
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examples/dist

‎README.md

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‎dist/lib/random.js

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@@ -126,7 +126,7 @@ var _stringWithBytes = function _stringWithBytes(entropyBits, bytes, charSet) {
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var needed = Math.ceil(count * (bitsPerChar / _bitsPerByte));
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if (bytes.length < needed) {
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throw new Error('Insufficient bytes. Need ' + needed);
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throw new Error('Insufficient bytes: need ' + needed + ' and got ' + bytes.length);
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}
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var charsPerChunk = charSet.getCharsPerChunk();

‎entropy-string.js

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const Random = require('./dist/lib/random').default
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const Entropy = require('./dist/lib/entropy').default
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const CharSet = require('./dist/lib/charSet').default
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const {charSet2, charSet4, charSet8, charSet16, charSet32, charSet64} = require('./dist/lib/random')
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const {charSet2, charSet4, charSet8, charSet16, charSet32, charSet64} = require('./dist/lib/charSet')
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module.exports = {
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Random,

‎examples.js

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‎examples/charSets.js

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import {charSet64, charSet32, charSet16, charSet8, charSet4, charSet2} from './entropy-string'
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console.log('\n charSet64: ' + charSet64.chars())
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console.log('\n charSet32: ' + charSet32.chars())
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console.log('\n charSet16: ' + charSet16.chars())
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console.log('\n charSet8: ' + charSet8.chars())
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console.log('\n charSet4: ' + charSet4.chars())
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console.log('\n charSet2: ' + charSet2.chars() + '\n')

‎examples/custom_bytes.js

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import {Random} from './entropy-string'
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let random = new Random()
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let bytes = Buffer.from([250, 200, 150, 100])
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let string = random.stringWithBytes(30, bytes)
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console.log('\n Custom bytes string : ' + string + '\n')
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try {
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string = random.stringWithBytes(32, bytes)
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}
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catch(error) {
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console.log(' Error: ' + error.message)
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}
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‎examples/custom_chars_1.js

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import {Random, charSet2} from './entropy-string'
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let random = new Random(charSet2)
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let flips = random.string(10)
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console.log('\n 10 flips: ' + flips + '\n')
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random.useChars('HT')
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flips = random.string(10)
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console.log('\n 10 flips: ' + flips + '\n')
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‎examples/custom_chars_2.js

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import {Random} from './entropy-string'
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let random = new Random('0123456789ABCDEF')
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let string = random.string(48)
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console.log('\n Uppercase hex: ' + string + '\n')

‎examples/custom_chars_3.js

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import {Random} from './entropy-string'
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try {
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let random = new Random('123456')
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}
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catch(error) {
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console.log('Error: ' + error.message)
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}
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try {
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let random = new Random('01233210')
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}
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catch(error) {
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console.log('Error: ' + error.message)
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}

‎examples/efficiency.js

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import {Random} from './entropy-string'
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let random = new Random()
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let string = random.string(80)
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console.log('\n CSPRNG base 32 80-bit string : ' + string)
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string = random.stringRandom(80)
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console.log('\n PRNG base 32 80-bit string : ' + string + '\n')
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‎examples/entropy-string.js

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‎examples/gen5.js

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import {Random, Entropy, charSet16} from './entropy-string'
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let bits = Entropy.bits(10000, 1000000)
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let random = new Random(charSet16)
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let strings = Array()
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for (let i = 0; i < 5; i++) {
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let string = random.string(bits)
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strings.push(string)
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}
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console.log('\n 5 IDs: ' + strings.join(', ') + '\n')

‎examples/more_1.js

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import {Random, Entropy} from './entropy-string'
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let bits = Entropy.bits(10000, 1000000)
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let random = new Random()
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let string = random.string(bits)
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console.log('\n Base 32 string : ' + string + '\n')
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‎examples/more_2.js

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import {Random, Entropy, charSet16, charSet4} from './entropy-string'
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let bits = Entropy.bits(30, 100000)
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let random = new Random(charSet16)
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let string = random.string(bits)
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console.log('\n Base 16 string : ' + string)
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random.use(charSet4)
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string = random.string(bits)
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console.log('\n Base 4 string : ' + string + '\n')

‎examples/more_3.js

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import {Random, Entropy} from './entropy-string'
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let bits = Entropy.bitsWithPowers(10, 12)
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let random = new Random()
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let string = random.string(bits)
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console.log('\n Base 32 string : ' + string + '\n')

‎examples/more_4.js

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import {Random} from './entropy-string'
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let random = new Random()
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let string = random.string(128)
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console.log('\n Base 32 session ID: ' + string + '\n')

‎examples/more_5.js

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import {Random, charSet64} from './entropy-string'
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let random = new Random(charSet64)
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let string = random.sessionID()
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console.log('\n Base 64 session ID: ' + string + '\n')

‎examples/tldr.js

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import {Random, Entropy, charSet16, charSet32, charSet64} from './entropy-string'
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var print = console.log
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var random = new Random()
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print('\nOWASP session ID using base32 characters: ' + random.sessionID())
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print('\nSession ID using file system and URL safe characters: ' + random.sessionID(charSet64))
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print('\n192-bit entropy string using base32 characters: ' + random.string(192))
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random = new Random(charSet16)
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print('\n48-bit entropy string using hex characters: ' + random.string(48))
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random.useChars('1234567890ABCDEF')
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print('\n48-bit entropy string using uppercase hex characters: ' + random.string(48))
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random.use(charSet32)
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var bits = Entropy.bits(30, 1000000)
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print('\nBase 32 string with a 1 in a million chance of a repeat in 30 strings: ' +
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random.string(bits))
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bits = Entropy.bitsWithPowers(8, 12)
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print('\nBase 64 string with a 1 in a trillion chance of a repeat in 100 million strings: ' +
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random.string(bits, charSet64))
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print('');

‎examples/tldr2.js

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import {Random, Entropy} from './entropy-string'
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let bits = Entropy.bitsWithPowers(6,9)
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let random = new Random()
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let string = random.string(bits)
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console.log('\n Base32 string with a 1 in a billion chance of repeat in a million strings: ' + string + '\n')

‎examples/tldr_1.js

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import {Random} from './entropy-string'
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let random = new Random()
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let string = random.sessionID()
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console.log('\n OWASP session ID using base32 characters: ' + string + '\n')

‎examples/tldr_2.js

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import {Random, charSet64} from './entropy-string'
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let random = new Random()
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let string = random.sessionID(charSet64)
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console.log('\n OWASP session ID using RFC 4648 file system and URL safe characters: ' + string + '\n')

‎examples/tldr_3.js

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import {Random, charSet16} from './entropy-string'
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let random = new Random(charSet16)
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let string = random.string(48)
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console.log('\n 48-bit string using hex characters: ' + string + '\n')

‎examples/tldr_4.js

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import {Random} from './entropy-string'
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let random = new Random('0123456789ABCDEF')
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let string = random.string(48)
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console.log('\n 48-bit string using hex characters: ' + string + '\n')

‎examples/tldr_5.js

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import {Random, Entropy} from './entropy-string'
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let bits = Entropy.bits(30, 1000000)
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let random = new Random()
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let string = random.string(bits)
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console.log('\n Base 32 character string with a 1 in a million chance of a repeat in 30 strings: ' + string + '\n')

‎examples/tldr_6.js

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import {Random, Entropy, charSet64} from './entropy-string'
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let bits = Entropy.bitsWithPowers(7, 12)
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let random = new Random(charSet64)
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let string = random.string(bits)
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console.log('\n Base 64 character string with a 1 in a trillion chance of a repeat in 100 million strings: ' + string + '\n')

‎lib/random.js

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const needed = Math.ceil(count * (bitsPerChar / _bitsPerByte))
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if (bytes.length < needed) {
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throw new Error('Insufficient bytes. Need ' + needed)
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throw new Error('Insufficient bytes: need ' + needed + ' and got ' + bytes.length)
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}
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const charsPerChunk = charSet.getCharsPerChunk()

‎package.json

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},
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"scripts": {
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"build": "BABEL_ENV=production babel --out-dir=dist lib/*.js",
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"examples": "BABEL_ENV=development babel --out-dir=tmp examples.js",
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"examples": "yarn build && cd examples && BABEL_ENV=development babel --out-dir=dist *.js && cd ..",
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"prepare": "yarn build",
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"test": "ava"
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},
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"keywords": [
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"entropy",
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"random",
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"string"
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"string",
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"secure",
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"security"
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],
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"author": "Paul Rogers <http://knoxen.com>",
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"maintainers": [

‎tmp/examples.js

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