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decaffeinate: Convert AccessTokenEncryptor.coffee to JS
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decaffeinate
mserranom
parent
b51f05bf5e
commit
054bbee912
1 changed files with 83 additions and 60 deletions
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@ -1,77 +1,100 @@
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crypto = require('crypto')
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/*
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* decaffeinate suggestions:
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* DS101: Remove unnecessary use of Array.from
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* DS102: Remove unnecessary code created because of implicit returns
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* DS207: Consider shorter variations of null checks
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* Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
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*/
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const crypto = require('crypto');
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ALGORITHM = 'aes-256-ctr'
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const ALGORITHM = 'aes-256-ctr';
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keyFn = (password, salt, callback)->
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return crypto.pbkdf2(password, salt, 10000, 64, 'sha1', callback)
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const keyFn = (password, salt, callback)=> crypto.pbkdf2(password, salt, 10000, 64, 'sha1', callback);
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keyFn32 = (password, salt, keyLength, callback)->
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return crypto.pbkdf2(password, salt, 10000, 32, 'sha1', callback)
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const keyFn32 = (password, salt, keyLength, callback)=> crypto.pbkdf2(password, salt, 10000, 32, 'sha1', callback);
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class AccessTokenEncryptor
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class AccessTokenEncryptor {
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constructor: (settings) ->
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constructor(settings) {
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@settings = settings
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@cipherLabel = @settings.cipherLabel
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throw Error("cipherLabel must not contain a colon (:)") if @cipherLabel?.match(/:/)
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this.settings = settings;
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this.cipherLabel = this.settings.cipherLabel;
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if (this.cipherLabel != null ? this.cipherLabel.match(/:/) : undefined) { throw Error("cipherLabel must not contain a colon (:)"); }
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@cipherPassword = @settings.cipherPasswords[@cipherLabel]
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throw Error("cipherPassword not set") if not @cipherPassword?
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throw Error("cipherPassword too short") if @cipherPassword.length < 16
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this.cipherPassword = this.settings.cipherPasswords[this.cipherLabel];
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if ((this.cipherPassword == null)) { throw Error("cipherPassword not set"); }
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if (this.cipherPassword.length < 16) { throw Error("cipherPassword too short"); }
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}
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encryptJson: (json, callback) ->
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string = JSON.stringify(json)
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crypto.randomBytes 32, (err, bytes) =>
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return callback(err) if err
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salt = bytes.slice(0, 16)
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iv = bytes.slice(16, 32)
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encryptJson(json, callback) {
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const string = JSON.stringify(json);
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return crypto.randomBytes(32, (err, bytes) => {
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if (err) { return callback(err); }
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const salt = bytes.slice(0, 16);
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const iv = bytes.slice(16, 32);
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keyFn32 @cipherPassword, salt, 32, (err, key) =>
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if err?
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logger.err err:err, "error getting Fn key"
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return callback(err)
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return keyFn32(this.cipherPassword, salt, 32, (err, key) => {
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if (err != null) {
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logger.err({err}, "error getting Fn key");
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return callback(err);
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}
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cipher = crypto.createCipheriv(ALGORITHM, key, iv)
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crypted = cipher.update(string, 'utf8', 'base64') + cipher.final('base64')
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const cipher = crypto.createCipheriv(ALGORITHM, key, iv);
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const crypted = cipher.update(string, 'utf8', 'base64') + cipher.final('base64');
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callback(null, "#{@cipherLabel}:#{salt.toString('hex')}:#{crypted}:#{iv.toString('hex')}")
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return callback(null, `${this.cipherLabel}:${salt.toString('hex')}:${crypted}:${iv.toString('hex')}`);
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});
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});
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}
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decryptToJson: (encryptedJson, callback) ->
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[label, salt, cipherText, iv] = encryptedJson.split(':', 4)
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password = @settings.cipherPasswords[label]
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return callback(new Error("invalid password")) if not password? or password.length < 16
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decryptToJson(encryptedJson, callback) {
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const [label, salt, cipherText, iv] = Array.from(encryptedJson.split(':', 4));
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const password = this.settings.cipherPasswords[label];
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if ((password == null) || (password.length < 16)) { return callback(new Error("invalid password")); }
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if iv
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@decryptToJsonV2(password, salt, cipherText, iv, callback)
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else
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@decryptToJsonV1(password, salt, cipherText, callback)
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if (iv) {
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return this.decryptToJsonV2(password, salt, cipherText, iv, callback);
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} else {
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return this.decryptToJsonV1(password, salt, cipherText, callback);
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}
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}
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decryptToJsonV1: (password, salt, cipherText, callback) ->
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keyFn password, Buffer.from(salt, 'hex'), (err, key) =>
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if err?
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logger.err err:err, "error getting Fn key"
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return callback(err)
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decipher = crypto.createDecipher(ALGORITHM, key)
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dec = decipher.update(cipherText, 'base64', 'utf8') + decipher.final('utf8')
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try
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json = JSON.parse(dec)
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catch e
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return callback(new Error("error decrypting token"))
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callback(null, json, true)
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decryptToJsonV1(password, salt, cipherText, callback) {
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return keyFn(password, Buffer.from(salt, 'hex'), (err, key) => {
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let json;
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if (err != null) {
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logger.err({err}, "error getting Fn key");
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return callback(err);
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}
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const decipher = crypto.createDecipher(ALGORITHM, key);
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const dec = decipher.update(cipherText, 'base64', 'utf8') + decipher.final('utf8');
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try {
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json = JSON.parse(dec);
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} catch (e) {
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return callback(new Error("error decrypting token"));
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}
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return callback(null, json, true);
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});
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}
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decryptToJsonV2: (password, salt, cipherText, iv, callback) ->
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keyFn32 password, Buffer.from(salt, 'hex'), 32, (err, key) =>
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if err?
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logger.err err:err, "error getting Fn key"
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return callback(err)
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decryptToJsonV2(password, salt, cipherText, iv, callback) {
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return keyFn32(password, Buffer.from(salt, 'hex'), 32, (err, key) => {
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let json;
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if (err != null) {
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logger.err({err}, "error getting Fn key");
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return callback(err);
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}
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decipher = crypto.createDecipheriv(ALGORITHM, key, Buffer.from(iv, 'hex'))
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dec = decipher.update(cipherText, 'base64', 'utf8') + decipher.final('utf8')
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try
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json = JSON.parse(dec)
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catch e
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return callback(new Error("error decrypting token"))
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callback(null, json)
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const decipher = crypto.createDecipheriv(ALGORITHM, key, Buffer.from(iv, 'hex'));
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const dec = decipher.update(cipherText, 'base64', 'utf8') + decipher.final('utf8');
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try {
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json = JSON.parse(dec);
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} catch (e) {
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return callback(new Error("error decrypting token"));
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}
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return callback(null, json);
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});
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}
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}
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module.exports = AccessTokenEncryptor
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module.exports = AccessTokenEncryptor;
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