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67 lines
2.0 KiB
67 lines
2.0 KiB
var DES = require('browserify-des') |
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var aes = require('browserify-aes/browser') |
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var aesModes = require('browserify-aes/modes') |
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var desModes = require('browserify-des/modes') |
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var ebtk = require('evp_bytestokey') |
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function createCipher (suite, password) { |
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suite = suite.toLowerCase() |
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var keyLen, ivLen |
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if (aesModes[suite]) { |
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keyLen = aesModes[suite].key |
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ivLen = aesModes[suite].iv |
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} else if (desModes[suite]) { |
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keyLen = desModes[suite].key * 8 |
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ivLen = desModes[suite].iv |
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} else { |
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throw new TypeError('invalid suite type') |
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} |
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var keys = ebtk(password, false, keyLen, ivLen) |
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return createCipheriv(suite, keys.key, keys.iv) |
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} |
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function createDecipher (suite, password) { |
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suite = suite.toLowerCase() |
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var keyLen, ivLen |
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if (aesModes[suite]) { |
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keyLen = aesModes[suite].key |
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ivLen = aesModes[suite].iv |
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} else if (desModes[suite]) { |
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keyLen = desModes[suite].key * 8 |
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ivLen = desModes[suite].iv |
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} else { |
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throw new TypeError('invalid suite type') |
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} |
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var keys = ebtk(password, false, keyLen, ivLen) |
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return createDecipheriv(suite, keys.key, keys.iv) |
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} |
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function createCipheriv (suite, key, iv) { |
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suite = suite.toLowerCase() |
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if (aesModes[suite]) return aes.createCipheriv(suite, key, iv) |
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if (desModes[suite]) return new DES({ key: key, iv: iv, mode: suite }) |
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throw new TypeError('invalid suite type') |
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} |
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function createDecipheriv (suite, key, iv) { |
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suite = suite.toLowerCase() |
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if (aesModes[suite]) return aes.createDecipheriv(suite, key, iv) |
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if (desModes[suite]) return new DES({ key: key, iv: iv, mode: suite, decrypt: true }) |
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throw new TypeError('invalid suite type') |
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} |
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function getCiphers () { |
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return Object.keys(desModes).concat(aes.getCiphers()) |
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} |
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exports.createCipher = exports.Cipher = createCipher |
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exports.createCipheriv = exports.Cipheriv = createCipheriv |
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exports.createDecipher = exports.Decipher = createDecipher |
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exports.createDecipheriv = exports.Decipheriv = createDecipheriv |
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exports.listCiphers = exports.getCiphers = getCiphers
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