3 const bcrypt = require('bcrypt')
4 const crypto = require('crypto')
5 const fs = require('fs')
6 const openssl = require('openssl-wrapper')
7 const ursa = require('ursa')
9 const constants = require('../initializers/constants')
10 const logger = require('./logger')
12 const algorithm = 'aes-256-ctr'
14 const peertubeCrypto = {
17 createCertsIfNotExist,
24 function checkSignature (publicKey, rawData, hexSignature) {
25 const crt = ursa.createPublicKey(publicKey)
26 const isValid = crt.hashAndVerify('sha256', new Buffer(rawData).toString('hex'), hexSignature, 'hex')
30 function comparePassword (plainPassword, hashPassword, callback) {
31 bcrypt.compare(plainPassword, hashPassword, function (err, isPasswordMatch) {
32 if (err) return callback(err)
34 return callback(null, isPasswordMatch)
38 function createCertsIfNotExist (callback) {
39 certsExist(function (exist) {
44 createCerts(function (err) {
50 function cryptPassword (password, callback) {
51 bcrypt.genSalt(constants.BCRYPT_SALT_SIZE, function (err, salt) {
52 if (err) return callback(err)
54 bcrypt.hash(password, salt, function (err, hash) {
55 return callback(err, hash)
60 function decrypt (key, data, callback) {
61 fs.readFile(constants.CONFIG.STORAGE.CERT_DIR + 'peertube.key.pem', function (err, file) {
62 if (err) return callback(err)
64 const myPrivateKey = ursa.createPrivateKey(file)
65 const decryptedKey = myPrivateKey.decrypt(key, 'hex', 'utf8')
66 const decryptedData = symetricDecrypt(data, decryptedKey)
68 return callback(null, decryptedData)
72 function encrypt (publicKey, data, callback) {
73 const crt = ursa.createPublicKey(publicKey)
75 symetricEncrypt(data, function (err, dataEncrypted) {
76 if (err) return callback(err)
78 const key = crt.encrypt(dataEncrypted.password, 'utf8', 'hex')
80 data: dataEncrypted.crypted,
84 callback(null, encrypted)
88 function sign (data) {
89 const myKey = ursa.createPrivateKey(fs.readFileSync(constants.CONFIG.STORAGE.CERT_DIR + 'peertube.key.pem'))
90 const signature = myKey.hashAndSign('sha256', data, 'utf8', 'hex')
95 // ---------------------------------------------------------------------------
97 module.exports = peertubeCrypto
99 // ---------------------------------------------------------------------------
101 function certsExist (callback) {
102 fs.exists(constants.CONFIG.STORAGE.CERT_DIR + 'peertube.key.pem', function (exists) {
103 return callback(exists)
107 function createCerts (callback) {
108 certsExist(function (exist) {
109 if (exist === true) {
110 const string = 'Certs already exist.'
111 logger.warning(string)
112 return callback(new Error(string))
115 logger.info('Generating a RSA key...')
118 'out': constants.CONFIG.STORAGE.CERT_DIR + 'peertube.key.pem',
121 openssl.exec('genrsa', options, function (err) {
123 logger.error('Cannot create private key on this pod.')
126 logger.info('RSA key generated.')
129 'in': constants.CONFIG.STORAGE.CERT_DIR + 'peertube.key.pem',
131 'out': constants.CONFIG.STORAGE.CERT_DIR + 'peertube.pub'
133 logger.info('Manage public key...')
134 openssl.exec('rsa', options, function (err) {
136 logger.error('Cannot create public key on this pod.')
140 logger.info('Public key managed.')
141 return callback(null)
147 function generatePassword (callback) {
148 crypto.randomBytes(32, function (err, buf) {
149 if (err) return callback(err)
151 callback(null, buf.toString('utf8'))
155 function symetricDecrypt (text, password) {
156 const decipher = crypto.createDecipher(algorithm, password)
157 let dec = decipher.update(text, 'hex', 'utf8')
158 dec += decipher.final('utf8')
162 function symetricEncrypt (text, callback) {
163 generatePassword(function (err, password) {
164 if (err) return callback(err)
166 const cipher = crypto.createCipher(algorithm, password)
167 let crypted = cipher.update(text, 'utf8', 'hex')
168 crypted += cipher.final('hex')
169 callback(null, { crypted: crypted, password: password })