From 4aab3c0061d17dac0e7d5ed7a7757988cb297469 Mon Sep 17 00:00:00 2001 From: Harald Leithner Date: Wed, 8 May 2019 15:25:42 +0200 Subject: [PATCH] Encode key as base58 --- js/base-x-3.0.5.1.js | 148 +++++++++++++++++++++++++++++++++++++++++++ js/privatebin.js | 3 +- tpl/bootstrap.php | 3 +- tpl/page.php | 3 +- 4 files changed, 154 insertions(+), 3 deletions(-) create mode 100644 js/base-x-3.0.5.1.js diff --git a/js/base-x-3.0.5.1.js b/js/base-x-3.0.5.1.js new file mode 100644 index 0000000..9a8eb72 --- /dev/null +++ b/js/base-x-3.0.5.1.js @@ -0,0 +1,148 @@ +// base-x encoding / decoding +// based on https://github.com/cryptocoinjs/base-x 3.0.5 +// modification: removed Buffer dependency and node.modules entry +// Copyright (c) 2018 base-x contributors +// Copyright (c) 2014-2018 The Bitcoin Core developers (base58.cpp) +// Distributed under the MIT software license, see the accompanying +// file LICENSE or http://www.opensource.org/licenses/mit-license.php. + +var baseX = function base (ALPHABET) { + if (ALPHABET.length >= 255) throw new TypeError('Alphabet too long') + + const BASE_MAP = new Uint8Array(256) + BASE_MAP.fill(255) + + for (let i = 0; i < ALPHABET.length; i++) { + const x = ALPHABET.charAt(i) + const xc = x.charCodeAt(0) + + if (BASE_MAP[xc] !== 255) throw new TypeError(x + ' is ambiguous') + BASE_MAP[xc] = i + } + + const BASE = ALPHABET.length + const LEADER = ALPHABET.charAt(0) + const FACTOR = Math.log(BASE) / Math.log(256) // log(BASE) / log(256), rounded up + const iFACTOR = Math.log(256) / Math.log(BASE) // log(256) / log(BASE), rounded up + + function encode (source) { + if (source.length === 0) return '' + + // Skip & count leading zeroes. + let zeroes = 0 + let length = 0 + let pbegin = 0 + const pend = source.length + + while (pbegin !== pend && source[pbegin] === 0) { + pbegin++ + zeroes++ + } + + // Allocate enough space in big-endian base58 representation. + const size = ((pend - pbegin) * iFACTOR + 1) >>> 0 + const b58 = new Uint8Array(size) + + // Process the bytes. + while (pbegin !== pend) { + let carry = source[pbegin] + + // Apply "b58 = b58 * 256 + ch". + let i = 0 + for (let it = size - 1; (carry !== 0 || i < length) && (it !== -1); it--, i++) { + carry += (256 * b58[it]) >>> 0 + b58[it] = (carry % BASE) >>> 0 + carry = (carry / BASE) >>> 0 + } + + if (carry !== 0) throw new Error('Non-zero carry') + length = i + pbegin++ + } + + // Skip leading zeroes in base58 result. + let it = size - length + while (it !== size && b58[it] === 0) { + it++ + } + + // Translate the result into a string. + let str = LEADER.repeat(zeroes) + for (; it < size; ++it) str += ALPHABET.charAt(b58[it]) + + return str + } + + function decodeUnsafe (source) { + if (typeof source !== 'string') throw new TypeError('Expected String') + if (source.length === 0) return '' + + let psz = 0 + + // Skip leading spaces. + if (source[psz] === ' ') return + + // Skip and count leading '1's. + let zeroes = 0 + let length = 0 + while (source[psz] === LEADER) { + zeroes++ + psz++ + } + + // Allocate enough space in big-endian base256 representation. + const size = (((source.length - psz) * FACTOR) + 1) >>> 0 // log(58) / log(256), rounded up. + const b256 = new Uint8Array(size) + + // Process the characters. + while (source[psz]) { + // Decode character + let carry = BASE_MAP[source.charCodeAt(psz)] + + // Invalid character + if (carry === 255) return + + let i = 0 + for (let it = size - 1; (carry !== 0 || i < length) && (it !== -1); it--, i++) { + carry += (BASE * b256[it]) >>> 0 + b256[it] = (carry % 256) >>> 0 + carry = (carry / 256) >>> 0 + } + + if (carry !== 0) throw new Error('Non-zero carry') + length = i + psz++ + } + + // Skip trailing spaces. + if (source[psz] === ' ') return + + // Skip leading zeroes in b256. + let it = size - length + while (it !== size && b256[it] === 0) { + it++ + } + + var vch = []; + + let j = zeroes + while (it !== size) { + vch[j++] = b256[it++] + } + + return vch + } + + function decode (string) { + const buffer = decodeUnsafe(string) + if (buffer) return buffer + + throw new Error('Non-base' + BASE + ' character') + } + + return { + encode: encode, + decodeUnsafe: decodeUnsafe, + decode: decode + } +} diff --git a/js/privatebin.js b/js/privatebin.js index cf74733..fc07ec5 100644 --- a/js/privatebin.js +++ b/js/privatebin.js @@ -643,7 +643,8 @@ jQuery.PrivateBin = (function($, sjcl, Base64, RawDeflate) { */ me.getSymmetricKey = function() { - return sjcl.codec.base64.fromBits(sjcl.random.randomWords(8, 10), 0); + var bs58 = new baseX('123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'); + return bs58.encode(sjcl.codec.base64.fromBits(sjcl.random.randomWords(8, 10), 0)); }; return me; diff --git a/tpl/bootstrap.php b/tpl/bootstrap.php index fdc1b51..d8419ff 100644 --- a/tpl/bootstrap.php +++ b/tpl/bootstrap.php @@ -60,6 +60,7 @@ else: + @@ -76,7 +77,7 @@ if ($MARKDOWN): endif; ?> - + diff --git a/tpl/page.php b/tpl/page.php index 8d87ea6..849d3ed 100644 --- a/tpl/page.php +++ b/tpl/page.php @@ -39,6 +39,7 @@ else: + - +