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42 lines
2.1 KiB
JavaScript
42 lines
2.1 KiB
JavaScript
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/**
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* From: https://github.com/pvorb/node-crypt/blob/master/crypt.js
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* Copyright © 2011, Paul Vorbach. All rights reserved.
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* Copyright © 2009, Jeff Mott. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* 3. Neither the name Crypto-JS nor the names of its contributors may be used to endorse or
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* promote products derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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// Convert a byte array to big-endian 32-bit words
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export function bytesToWords(bytes) {
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const words = []
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for (let i = 0, b = 0; i < bytes.length; i++, b += 8)
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words[b >>> 5] |= bytes[i] << (24 - (b % 32))
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return words
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}
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// Convert big-endian 32-bit words to a byte array
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export function wordsToBytes(words) {
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const bytes = []
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for (let b = 0; b < words.length * 32; b += 8)
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bytes.push((words[b >>> 5] >>> (24 - (b % 32))) & 0xff)
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return bytes
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}
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