X-Git-Url: https://git.immae.eu/?a=blobdiff_plain;f=server%2Fhelpers%2Fpeertube-crypto.js;h=ef6808d5ce1edf4dc54e89535babebe622dda8a2;hb=f282639b07deee1e35403bd86c46ea521fb4845e;hp=1ff638b04ecce144a71698c9eaffea2efcef8391;hpb=a6375e69668ea42e19531c6bc68dcd37f3f7cbd7;p=github%2FChocobozzz%2FPeerTube.git

diff --git a/server/helpers/peertube-crypto.js b/server/helpers/peertube-crypto.js
index 1ff638b04..ef6808d5c 100644
--- a/server/helpers/peertube-crypto.js
+++ b/server/helpers/peertube-crypto.js
@@ -1,32 +1,70 @@
 'use strict'
 
-const bcrypt = require('bcrypt')
 const crypto = require('crypto')
+const bcrypt = require('bcrypt')
 const fs = require('fs')
 const openssl = require('openssl-wrapper')
-const ursa = require('ursa')
+const pathUtils = require('path')
 
 const constants = require('../initializers/constants')
 const logger = require('./logger')
 
-const algorithm = 'aes-256-ctr'
-
 const peertubeCrypto = {
   checkSignature,
   comparePassword,
   createCertsIfNotExist,
   cryptPassword,
-  decrypt,
-  encrypt,
+  getMyPrivateCert,
+  getMyPublicCert,
   sign
 }
 
-function checkSignature (publicKey, rawData, hexSignature) {
-  const crt = ursa.createPublicKey(publicKey)
-  const isValid = crt.hashAndVerify('sha256', new Buffer(rawData).toString('hex'), hexSignature, 'hex')
+function checkSignature (publicKey, data, hexSignature) {
+  const verify = crypto.createVerify(constants.SIGNATURE_ALGORITHM)
+
+  let dataString
+  if (typeof data === 'string') {
+    dataString = data
+  } else {
+    try {
+      dataString = JSON.stringify(data)
+    } catch (err) {
+      logger.error('Cannot check signature.', { error: err })
+      return false
+    }
+  }
+
+  verify.update(dataString, 'utf8')
+
+  const isValid = verify.verify(publicKey, hexSignature, constants.SIGNATURE_ENCODING)
   return isValid
 }
 
+function sign (data) {
+  const sign = crypto.createSign(constants.SIGNATURE_ALGORITHM)
+
+  let dataString
+  if (typeof data === 'string') {
+    dataString = data
+  } else {
+    try {
+      dataString = JSON.stringify(data)
+    } catch (err) {
+      logger.error('Cannot sign data.', { error: err })
+      return ''
+    }
+  }
+
+  sign.update(dataString, 'utf8')
+
+  // TODO: make async
+  const certPath = pathUtils.join(constants.CONFIG.STORAGE.CERT_DIR, constants.PRIVATE_CERT_NAME)
+  const myKey = fs.readFileSync(certPath)
+  const signature = sign.sign(myKey, constants.SIGNATURE_ENCODING)
+
+  return signature
+}
+
 function comparePassword (plainPassword, hashPassword, callback) {
   bcrypt.compare(plainPassword, hashPassword, function (err, isPasswordMatch) {
     if (err) return callback(err)
@@ -57,39 +95,14 @@ function cryptPassword (password, callback) {
   })
 }
 
-function decrypt (key, data, callback) {
-  fs.readFile(constants.CONFIG.STORAGE.CERT_DIR + 'peertube.key.pem', function (err, file) {
-    if (err) return callback(err)
-
-    const myPrivateKey = ursa.createPrivateKey(file)
-    const decryptedKey = myPrivateKey.decrypt(key, 'hex', 'utf8')
-    const decryptedData = symetricDecrypt(data, decryptedKey)
-
-    return callback(null, decryptedData)
-  })
-}
-
-function encrypt (publicKey, data, callback) {
-  const crt = ursa.createPublicKey(publicKey)
-
-  symetricEncrypt(data, function (err, dataEncrypted) {
-    if (err) return callback(err)
-
-    const key = crt.encrypt(dataEncrypted.password, 'utf8', 'hex')
-    const encrypted = {
-      data: dataEncrypted.crypted,
-      key: key
-    }
-
-    callback(null, encrypted)
-  })
+function getMyPrivateCert (callback) {
+  const certPath = pathUtils.join(constants.CONFIG.STORAGE.CERT_DIR, constants.PRIVATE_CERT_NAME)
+  fs.readFile(certPath, 'utf8', callback)
 }
 
-function sign (data) {
-  const myKey = ursa.createPrivateKey(fs.readFileSync(constants.CONFIG.STORAGE.CERT_DIR + 'peertube.key.pem'))
-  const signature = myKey.hashAndSign('sha256', data, 'utf8', 'hex')
-
-  return signature
+function getMyPublicCert (callback) {
+  const certPath = pathUtils.join(constants.CONFIG.STORAGE.CERT_DIR, constants.PUBLIC_CERT_NAME)
+  fs.readFile(certPath, 'utf8', callback)
 }
 
 // ---------------------------------------------------------------------------
@@ -99,7 +112,8 @@ module.exports = peertubeCrypto
 // ---------------------------------------------------------------------------
 
 function certsExist (callback) {
-  fs.exists(constants.CONFIG.STORAGE.CERT_DIR + 'peertube.key.pem', function (exists) {
+  const certPath = pathUtils.join(constants.CONFIG.STORAGE.CERT_DIR, constants.PRIVATE_CERT_NAME)
+  fs.exists(certPath, function (exists) {
     return callback(exists)
   })
 }
@@ -114,24 +128,27 @@ function createCerts (callback) {
 
     logger.info('Generating a RSA key...')
 
-    let options = {
-      'out': constants.CONFIG.STORAGE.CERT_DIR + 'peertube.key.pem',
+    const privateCertPath = pathUtils.join(constants.CONFIG.STORAGE.CERT_DIR, constants.PRIVATE_CERT_NAME)
+    const genRsaOptions = {
+      'out': privateCertPath,
       '2048': false
     }
-    openssl.exec('genrsa', options, function (err) {
+    openssl.exec('genrsa', genRsaOptions, function (err) {
       if (err) {
         logger.error('Cannot create private key on this pod.')
         return callback(err)
       }
+
       logger.info('RSA key generated.')
+      logger.info('Managing public key...')
 
-      options = {
-        'in': constants.CONFIG.STORAGE.CERT_DIR + 'peertube.key.pem',
+      const publicCertPath = pathUtils.join(constants.CONFIG.STORAGE.CERT_DIR, 'peertube.pub')
+      const rsaOptions = {
+        'in': privateCertPath,
         'pubout': true,
-        'out': constants.CONFIG.STORAGE.CERT_DIR + 'peertube.pub'
+        'out': publicCertPath
       }
-      logger.info('Manage public key...')
-      openssl.exec('rsa', options, function (err) {
+      openssl.exec('rsa', rsaOptions, function (err) {
         if (err) {
           logger.error('Cannot create public key on this pod.')
           return callback(err)
@@ -143,29 +160,3 @@ function createCerts (callback) {
     })
   })
 }
-
-function generatePassword (callback) {
-  crypto.randomBytes(32, function (err, buf) {
-    if (err) return callback(err)
-
-    callback(null, buf.toString('utf8'))
-  })
-}
-
-function symetricDecrypt (text, password) {
-  const decipher = crypto.createDecipher(algorithm, password)
-  let dec = decipher.update(text, 'hex', 'utf8')
-  dec += decipher.final('utf8')
-  return dec
-}
-
-function symetricEncrypt (text, callback) {
-  generatePassword(function (err, password) {
-    if (err) return callback(err)
-
-    const cipher = crypto.createCipher(algorithm, password)
-    let crypted = cipher.update(text, 'utf8', 'hex')
-    crypted += cipher.final('hex')
-    callback(null, { crypted: crypted, password: password })
-  })
-}