123456789101112131415161718192021222324252627282930 |
- // adapted from https://github.com/apatil/pemstrip
- var findProc = /Proc-Type: 4,ENCRYPTED[\n\r]+DEK-Info: AES-((?:128)|(?:192)|(?:256))-CBC,([0-9A-H]+)[\n\r]+([0-9A-z\n\r\+\/\=]+)[\n\r]+/m
- var startRegex = /^-----BEGIN ((?:.* KEY)|CERTIFICATE)-----/m
- var fullRegex = /^-----BEGIN ((?:.* KEY)|CERTIFICATE)-----([0-9A-z\n\r\+\/\=]+)-----END \1-----$/m
- var evp = require('evp_bytestokey')
- var ciphers = require('browserify-aes')
- module.exports = function (okey, password) {
- var key = okey.toString()
- var match = key.match(findProc)
- var decrypted
- if (!match) {
- var match2 = key.match(fullRegex)
- decrypted = new Buffer(match2[2].replace(/[\r\n]/g, ''), 'base64')
- } else {
- var suite = 'aes' + match[1]
- var iv = new Buffer(match[2], 'hex')
- var cipherText = new Buffer(match[3].replace(/[\r\n]/g, ''), 'base64')
- var cipherKey = evp(password, iv.slice(0, 8), parseInt(match[1], 10)).key
- var out = []
- var cipher = ciphers.createDecipheriv(suite, cipherKey, iv)
- out.push(cipher.update(cipherText))
- out.push(cipher.final())
- decrypted = Buffer.concat(out)
- }
- var tag = key.match(startRegex)[1]
- return {
- tag: tag,
- data: decrypted
- }
- }
|