You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
68 lines
2.0 KiB
68 lines
2.0 KiB
var DES = require('browserify-des')
|
|
var aes = require('browserify-aes/browser')
|
|
var aesModes = require('browserify-aes/modes')
|
|
var desModes = require('browserify-des/modes')
|
|
var ebtk = require('evp_bytestokey')
|
|
|
|
function createCipher (suite, password) {
|
|
suite = suite.toLowerCase()
|
|
|
|
var keyLen, ivLen
|
|
if (aesModes[suite]) {
|
|
keyLen = aesModes[suite].key
|
|
ivLen = aesModes[suite].iv
|
|
} else if (desModes[suite]) {
|
|
keyLen = desModes[suite].key * 8
|
|
ivLen = desModes[suite].iv
|
|
} else {
|
|
throw new TypeError('invalid suite type')
|
|
}
|
|
|
|
var keys = ebtk(password, false, keyLen, ivLen)
|
|
return createCipheriv(suite, keys.key, keys.iv)
|
|
}
|
|
|
|
function createDecipher (suite, password) {
|
|
suite = suite.toLowerCase()
|
|
|
|
var keyLen, ivLen
|
|
if (aesModes[suite]) {
|
|
keyLen = aesModes[suite].key
|
|
ivLen = aesModes[suite].iv
|
|
} else if (desModes[suite]) {
|
|
keyLen = desModes[suite].key * 8
|
|
ivLen = desModes[suite].iv
|
|
} else {
|
|
throw new TypeError('invalid suite type')
|
|
}
|
|
|
|
var keys = ebtk(password, false, keyLen, ivLen)
|
|
return createDecipheriv(suite, keys.key, keys.iv)
|
|
}
|
|
|
|
function createCipheriv (suite, key, iv) {
|
|
suite = suite.toLowerCase()
|
|
if (aesModes[suite]) return aes.createCipheriv(suite, key, iv)
|
|
if (desModes[suite]) return new DES({ key: key, iv: iv, mode: suite })
|
|
|
|
throw new TypeError('invalid suite type')
|
|
}
|
|
|
|
function createDecipheriv (suite, key, iv) {
|
|
suite = suite.toLowerCase()
|
|
if (aesModes[suite]) return aes.createDecipheriv(suite, key, iv)
|
|
if (desModes[suite]) return new DES({ key: key, iv: iv, mode: suite, decrypt: true })
|
|
|
|
throw new TypeError('invalid suite type')
|
|
}
|
|
|
|
function getCiphers () {
|
|
return Object.keys(desModes).concat(aes.getCiphers())
|
|
}
|
|
|
|
exports.createCipher = exports.Cipher = createCipher
|
|
exports.createCipheriv = exports.Cipheriv = createCipheriv
|
|
exports.createDecipher = exports.Decipher = createDecipher
|
|
exports.createDecipheriv = exports.Decipheriv = createDecipheriv
|
|
exports.listCiphers = exports.getCiphers = getCiphers
|