-import * as crypto from 'crypto'
-import * as Promise from 'bluebird'
-import { join } from 'path'
-
-import {
- SIGNATURE_ALGORITHM,
- SIGNATURE_ENCODING,
- PRIVATE_CERT_NAME,
- CONFIG,
- BCRYPT_SALT_SIZE,
- PUBLIC_CERT_NAME
-} from '../initializers'
-import {
- readFilePromise,
- bcryptComparePromise,
- bcryptGenSaltPromise,
- bcryptHashPromise,
- accessPromise,
- opensslExecPromise
-} from './core-utils'
+import { compare, genSalt, hash } from 'bcrypt'
+import { createCipheriv, createDecipheriv, createSign, createVerify } from 'crypto'
+import { Request } from 'express'
+import { cloneDeep } from 'lodash'
+import { promisify1, promisify2 } from '@shared/core-utils'
+import { sha256 } from '@shared/extra-utils'
+import { BCRYPT_SALT_SIZE, ENCRYPTION, HTTP_SIGNATURE, PRIVATE_RSA_KEY_SIZE } from '../initializers/constants'
+import { MActor } from '../types/models'
+import { generateRSAKeyPairPromise, randomBytesPromise, scryptPromise } from './core-utils'
+import { jsonld } from './custom-jsonld-signature'
import { logger } from './logger'
-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
- }
+const bcryptComparePromise = promisify2<any, string, boolean>(compare)
+const bcryptGenSaltPromise = promisify1<number, string>(genSalt)
+const bcryptHashPromise = promisify2<any, string | number, string>(hash)
+
+const httpSignature = require('@peertube/http-signature')
+
+function createPrivateAndPublicKeys () {
+ logger.info('Generating a RSA key...')
+
+ return generateRSAKeyPairPromise(PRIVATE_RSA_KEY_SIZE)
+}
+
+// ---------------------------------------------------------------------------
+// User password checks
+// ---------------------------------------------------------------------------
+
+function comparePassword (plainPassword: string, hashPassword: string) {
+ if (!plainPassword) return Promise.resolve(false)
+
+ return bcryptComparePromise(plainPassword, hashPassword)
+}
+
+async function cryptPassword (password: string) {
+ const salt = await bcryptGenSaltPromise(BCRYPT_SALT_SIZE)
+
+ return bcryptHashPromise(password, salt)
+}
+
+// ---------------------------------------------------------------------------
+// HTTP Signature
+// ---------------------------------------------------------------------------
+
+function isHTTPSignatureDigestValid (rawBody: Buffer, req: Request): boolean {
+ if (req.headers[HTTP_SIGNATURE.HEADER_NAME] && req.headers['digest']) {
+ return buildDigest(rawBody.toString()) === req.headers['digest']
}
- verify.update(dataString, 'utf8')
+ return true
+}
- const isValid = verify.verify(publicKey, hexSignature, SIGNATURE_ENCODING)
- return isValid
+function isHTTPSignatureVerified (httpSignatureParsed: any, actor: MActor): boolean {
+ return httpSignature.verifySignature(httpSignatureParsed, actor.publicKey) === true
}
-function sign (data: string|Object) {
- const sign = crypto.createSign(SIGNATURE_ALGORITHM)
+function parseHTTPSignature (req: Request, clockSkew?: number) {
+ const requiredHeaders = req.method === 'POST'
+ ? [ '(request-target)', 'host', 'digest' ]
+ : [ '(request-target)', 'host' ]
+
+ const parsed = httpSignature.parse(req, { clockSkew, headers: requiredHeaders })
- let dataString: string
- if (typeof data === 'string') {
- dataString = data
- } else {
- try {
- dataString = JSON.stringify(data)
- } catch (err) {
- logger.error('Cannot sign data.', err)
- return Promise.resolve('')
- }
+ const parsedHeaders = parsed.params.headers
+ if (!parsedHeaders.includes('date') && !parsedHeaders.includes('(created)')) {
+ throw new Error(`date or (created) must be included in signature`)
}
- sign.update(dataString, 'utf8')
+ return parsed
+}
- return getMyPrivateCert().then(myKey => {
- return sign.sign(myKey, SIGNATURE_ENCODING)
- })
+// ---------------------------------------------------------------------------
+// JSONLD
+// ---------------------------------------------------------------------------
+
+function isJsonLDSignatureVerified (fromActor: MActor, signedDocument: any): Promise<boolean> {
+ if (signedDocument.signature.type === 'RsaSignature2017') {
+ return isJsonLDRSA2017Verified(fromActor, signedDocument)
+ }
+
+ logger.warn('Unknown JSON LD signature %s.', signedDocument.signature.type, signedDocument)
+
+ return Promise.resolve(false)
}
-function comparePassword (plainPassword: string, hashPassword: string) {
- return bcryptComparePromise(plainPassword, hashPassword)
+// Backward compatibility with "other" implementations
+async function isJsonLDRSA2017Verified (fromActor: MActor, signedDocument: any) {
+ const [ documentHash, optionsHash ] = await Promise.all([
+ createDocWithoutSignatureHash(signedDocument),
+ createSignatureHash(signedDocument.signature)
+ ])
+
+ const toVerify = optionsHash + documentHash
+
+ const verify = createVerify('RSA-SHA256')
+ verify.update(toVerify, 'utf8')
+
+ return verify.verify(fromActor.publicKey, signedDocument.signature.signatureValue, 'base64')
}
-function createCertsIfNotExist () {
- return certsExist().then(exist => {
- if (exist === true) {
- return undefined
- }
+async function signJsonLDObject <T> (byActor: MActor, data: T) {
+ const signature = {
+ type: 'RsaSignature2017',
+ creator: byActor.url,
+ created: new Date().toISOString()
+ }
- return createCerts()
- })
+ const [ documentHash, optionsHash ] = await Promise.all([
+ createDocWithoutSignatureHash(data),
+ createSignatureHash(signature)
+ ])
+
+ const toSign = optionsHash + documentHash
+
+ const sign = createSign('RSA-SHA256')
+ sign.update(toSign, 'utf8')
+
+ const signatureValue = sign.sign(byActor.privateKey, 'base64')
+ Object.assign(signature, { signatureValue })
+
+ return Object.assign(data, { signature })
}
-function cryptPassword (password: string) {
- return bcryptGenSaltPromise(BCRYPT_SALT_SIZE).then(salt => bcryptHashPromise(password, salt))
+// ---------------------------------------------------------------------------
+
+function buildDigest (body: any) {
+ const rawBody = typeof body === 'string' ? body : JSON.stringify(body)
+
+ return 'SHA-256=' + sha256(rawBody, 'base64')
}
-function getMyPrivateCert () {
- const certPath = join(CONFIG.STORAGE.CERT_DIR, PRIVATE_CERT_NAME)
- return readFilePromise(certPath, 'utf8')
+// ---------------------------------------------------------------------------
+// Encryption
+// ---------------------------------------------------------------------------
+
+async function encrypt (str: string, secret: string) {
+ const iv = await randomBytesPromise(ENCRYPTION.IV)
+
+ const key = await scryptPromise(secret, ENCRYPTION.SALT, 32)
+ const cipher = createCipheriv(ENCRYPTION.ALGORITHM, key, iv)
+
+ let encrypted = iv.toString(ENCRYPTION.ENCODING) + ':'
+ encrypted += cipher.update(str, 'utf8', ENCRYPTION.ENCODING)
+ encrypted += cipher.final(ENCRYPTION.ENCODING)
+
+ return encrypted
}
-function getMyPublicCert () {
- const certPath = join(CONFIG.STORAGE.CERT_DIR, PUBLIC_CERT_NAME)
- return readFilePromise(certPath, 'utf8')
+async function decrypt (encryptedArg: string, secret: string) {
+ const [ ivStr, encryptedStr ] = encryptedArg.split(':')
+
+ const iv = Buffer.from(ivStr, 'hex')
+ const key = await scryptPromise(secret, ENCRYPTION.SALT, 32)
+
+ const decipher = createDecipheriv(ENCRYPTION.ALGORITHM, key, iv)
+
+ return decipher.update(encryptedStr, ENCRYPTION.ENCODING, 'utf8') + decipher.final('utf8')
}
// ---------------------------------------------------------------------------
export {
- checkSignature,
+ isHTTPSignatureDigestValid,
+ parseHTTPSignature,
+ isHTTPSignatureVerified,
+ buildDigest,
+ isJsonLDSignatureVerified,
comparePassword,
- createCertsIfNotExist,
+ createPrivateAndPublicKeys,
cryptPassword,
- getMyPrivateCert,
- getMyPublicCert,
- sign
+ signJsonLDObject,
+
+ encrypt,
+ decrypt
}
// ---------------------------------------------------------------------------
-function certsExist () {
- const certPath = join(CONFIG.STORAGE.CERT_DIR, PRIVATE_CERT_NAME)
-
- // If there is an error the certificates do not exist
- return accessPromise(certPath)
- .then(() => true)
- .catch(() => false)
-}
-
-function createCerts () {
- return certsExist().then(exist => {
- 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
- }
- return opensslExecPromise('genrsa', genRsaOptions)
- .then(() => {
- 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
- }
- return opensslExecPromise('rsa', rsaOptions)
- .then(() => logger.info('Public key managed.'))
- .catch(err => {
- logger.error('Cannot create public key on this pod.')
- throw err
- })
- })
- .catch(err => {
- logger.error('Cannot create private key on this pod.')
- throw err
- })
+function hashObject (obj: any): Promise<any> {
+ return jsonld.promises.normalize(obj, {
+ safe: false,
+ algorithm: 'URDNA2015',
+ format: 'application/n-quads'
+ }).then(res => sha256(res))
+}
+
+function createSignatureHash (signature: any) {
+ const signatureCopy = cloneDeep(signature)
+ Object.assign(signatureCopy, {
+ '@context': [
+ 'https://w3id.org/security/v1',
+ { RsaSignature2017: 'https://w3id.org/security#RsaSignature2017' }
+ ]
})
+
+ delete signatureCopy.type
+ delete signatureCopy.id
+ delete signatureCopy.signatureValue
+
+ return hashObject(signatureCopy)
+}
+
+function createDocWithoutSignatureHash (doc: any) {
+ const docWithoutSignature = cloneDeep(doc)
+ delete docWithoutSignature.signature
+
+ return hashObject(docWithoutSignature)
}
projects / github / Chocobozzz / PeerTube.git / blobdiff