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build/node_modules/parse-asn1/fixProc.js

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+// 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?\n\r?([0-9A-z\n\r\+\/\=]+)\n\r?/m
+var startRegex = /^-----BEGIN ((?:.* KEY)|CERTIFICATE)-----\n/m
+var fullRegex = /^-----BEGIN ((?:.* KEY)|CERTIFICATE)-----\n\r?([0-9A-z\n\r\+\/\=]+)\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
+  }
+}