Begin activitypub

[github/Chocobozzz/PeerTube.git] / server / helpers / peertube-crypto.ts

diff --git a/server/helpers/peertube-crypto.ts b/server/helpers/peertube-crypto.ts
index 10a226af47b2357d2ec8e133d88fe151389a5b9c..6d50e446f59a124488f2eb392e3212142d426e69 100644 (file)
--- a/server/helpers/peertube-crypto.ts
+++ b/server/helpers/peertube-crypto.ts
@@ -1,77 +1,68 @@
-import * as crypto from 'crypto'
-import { join } from 'path'
+import * as jsig from 'jsonld-signatures'
 
 import {
-  SIGNATURE_ALGORITHM,
-  SIGNATURE_ENCODING,
-  PRIVATE_CERT_NAME,
-  CONFIG,
-  BCRYPT_SALT_SIZE,
-  PUBLIC_CERT_NAME
+  PRIVATE_RSA_KEY_SIZE,
+  BCRYPT_SALT_SIZE
 } from '../initializers'
 import {
-  readFilePromise,
   bcryptComparePromise,
   bcryptGenSaltPromise,
   bcryptHashPromise,
-  accessPromise,
-  opensslExecPromise
+  createPrivateKey,
+  getPublicKey,
+  jsonldSignPromise,
+  jsonldVerifyPromise
 } from './core-utils'
 import { logger } from './logger'
+import { AccountInstance } from '../models/account/account-interface'
 
-function checkSignature (publicKey: string, data: string, hexSignature: string) {
-  const verify = crypto.createVerify(SIGNATURE_ALGORITHM)
-
-  let dataString
-  if (typeof data === 'string') {
-    dataString = data
-  } else {
-    try {
-      dataString = JSON.stringify(data)
-    } catch (err) {
-      logger.error('Cannot check signature.', err)
-      return false
-    }
-  }
+async function createPrivateAndPublicKeys () {
+  logger.info('Generating a RSA key...')
 
-  verify.update(dataString, 'utf8')
+  const { key } = await createPrivateKey(PRIVATE_RSA_KEY_SIZE)
+  const { publicKey } = await getPublicKey(key)
 
-  const isValid = verify.verify(publicKey, hexSignature, SIGNATURE_ENCODING)
-  return isValid
+  return { privateKey: key, publicKey }
 }
 
-async function sign (data: string | Object) {
-  const sign = crypto.createSign(SIGNATURE_ALGORITHM)
-
-  let dataString: string
-  if (typeof data === 'string') {
-    dataString = data
-  } else {
-    try {
-      dataString = JSON.stringify(data)
-    } catch (err) {
-      logger.error('Cannot sign data.', err)
-      return ''
-    }
+function isSignatureVerified (fromAccount: AccountInstance, signedDocument: object) {
+  const publicKeyObject = {
+    '@context': jsig.SECURITY_CONTEXT_URL,
+    '@id': fromAccount.url,
+    '@type':  'CryptographicKey',
+    owner: fromAccount.url,
+    publicKeyPem: fromAccount.publicKey
   }
 
-  sign.update(dataString, 'utf8')
+  const publicKeyOwnerObject = {
+    '@context': jsig.SECURITY_CONTEXT_URL,
+    '@id': fromAccount.url,
+    publicKey: [ publicKeyObject ]
+  }
 
-  const myKey = await getMyPrivateCert()
-  return sign.sign(myKey, SIGNATURE_ENCODING)
-}
+  const options = {
+    publicKey: publicKeyObject,
+    publicKeyOwner: publicKeyOwnerObject
+  }
 
-function comparePassword (plainPassword: string, hashPassword: string) {
-  return bcryptComparePromise(plainPassword, hashPassword)
+  return jsonldVerifyPromise(signedDocument, options)
+    .catch(err => {
+      logger.error('Cannot check signature.', err)
+      return false
+    })
 }
 
-async function createCertsIfNotExist () {
-  const exist = await certsExist()
-  if (exist === true) {
-    return
+function signObject (byAccount: AccountInstance, data: any) {
+  const options = {
+    privateKeyPem: byAccount.privateKey,
+    creator: byAccount.url
   }
 
-  return createCerts()
+  return jsonldSignPromise(data, options)
+}
+
+function comparePassword (plainPassword: string, hashPassword: string) {
+  return bcryptComparePromise(plainPassword, hashPassword)
 }
 
 async function cryptPassword (password: string) {
@@ -80,69 +71,12 @@ async function cryptPassword (password: string) {
   return bcryptHashPromise(password, salt)
 }
 
-function getMyPrivateCert () {
-  const certPath = join(CONFIG.STORAGE.CERT_DIR, PRIVATE_CERT_NAME)
-  return readFilePromise(certPath, 'utf8')
-}
-
-function getMyPublicCert () {
-  const certPath = join(CONFIG.STORAGE.CERT_DIR, PUBLIC_CERT_NAME)
-  return readFilePromise(certPath, 'utf8')
-}
-
 // ---------------------------------------------------------------------------
 
 export {
-  checkSignature,
+  isSignatureVerified,
   comparePassword,
-  createCertsIfNotExist,
+  createPrivateAndPublicKeys,
   cryptPassword,
-  getMyPrivateCert,
-  getMyPublicCert,
-  sign
-}
-
-// ---------------------------------------------------------------------------
-
-async function certsExist () {
-  const certPath = join(CONFIG.STORAGE.CERT_DIR, PRIVATE_CERT_NAME)
-
-  // If there is an error the certificates do not exist
-  try {
-    await accessPromise(certPath)
-
-    return true
-  } catch {
-    return false
-  }
-}
-
-async function createCerts () {
-  const exist = await certsExist()
-  if (exist === true) {
-    const errorMessage = 'Certs already exist.'
-    logger.warning(errorMessage)
-    throw new Error(errorMessage)
-  }
-
-  logger.info('Generating a RSA key...')
-
-  const privateCertPath = join(CONFIG.STORAGE.CERT_DIR, PRIVATE_CERT_NAME)
-  const genRsaOptions = {
-    'out': privateCertPath,
-    '2048': false
-  }
-
-  await opensslExecPromise('genrsa', genRsaOptions)
-  logger.info('RSA key generated.')
-  logger.info('Managing public key...')
-
-  const publicCertPath = join(CONFIG.STORAGE.CERT_DIR, 'peertube.pub')
-  const rsaOptions = {
-    'in': privateCertPath,
-    'pubout': true,
-    'out': publicCertPath
-  }
-
-  await opensslExecPromise('rsa', rsaOptions)
+  signObject
 }