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import { Request } from 'express'
import { BCRYPT_SALT_SIZE, HTTP_SIGNATURE, PRIVATE_RSA_KEY_SIZE } from '../initializers'
import { ActorModel } from '../models/activitypub/actor'
import { bcryptComparePromise, bcryptGenSaltPromise, bcryptHashPromise, createPrivateKey, getPublicKey } from './core-utils'
import { jsig } from './custom-jsonld-signature'
import { logger } from './logger'
const httpSignature = require('http-signature')
async function createPrivateAndPublicKeys () {
logger.info('Generating a RSA key...')
const { key } = await createPrivateKey(PRIVATE_RSA_KEY_SIZE)
const { publicKey } = await getPublicKey(key)
return { privateKey: key, publicKey }
}
// User password checks
function comparePassword (plainPassword: string, hashPassword: string) {
return bcryptComparePromise(plainPassword, hashPassword)
}
async function cryptPassword (password: string) {
const salt = await bcryptGenSaltPromise(BCRYPT_SALT_SIZE)
return bcryptHashPromise(password, salt)
}
// HTTP Signature
function isHTTPSignatureVerified (httpSignatureParsed: any, actor: ActorModel) {
return httpSignature.verifySignature(httpSignatureParsed, actor.publicKey) === true
}
function parseHTTPSignature (req: Request) {
return httpSignature.parse(req, { authorizationHeaderName: HTTP_SIGNATURE.HEADER_NAME })
}
// JSONLD
function isJsonLDSignatureVerified (fromActor: ActorModel, signedDocument: any) {
const publicKeyObject = {
'@context': jsig.SECURITY_CONTEXT_URL,
id: fromActor.url,
type: 'CryptographicKey',
owner: fromActor.url,
publicKeyPem: fromActor.publicKey
}
const publicKeyOwnerObject = {
'@context': jsig.SECURITY_CONTEXT_URL,
id: fromActor.url,
publicKey: [ publicKeyObject ]
}
const options = {
publicKey: publicKeyObject,
publicKeyOwner: publicKeyOwnerObject
}
return jsig.promises
.verify(signedDocument, options)
.then((result: { verified: boolean }) => {
logger.info('coucou', result)
return result.verified
})
.catch(err => {
logger.error('Cannot check signature.', { err })
return false
})
}
function signJsonLDObject (byActor: ActorModel, data: any) {
const options = {
privateKeyPem: byActor.privateKey,
creator: byActor.url,
algorithm: 'RsaSignature2017'
}
return jsig.promises.sign(data, options)
}
// ---------------------------------------------------------------------------
export {
parseHTTPSignature,
isHTTPSignatureVerified,
isJsonLDSignatureVerified,
comparePassword,
createPrivateAndPublicKeys,
cryptPassword,
signJsonLDObject
}
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