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import * as jsonld from 'jsonld'
import * as jsig from 'jsonld-signatures'
jsig.use('jsonld', jsonld)
import {
PRIVATE_RSA_KEY_SIZE,
BCRYPT_SALT_SIZE
} from '../initializers'
import {
bcryptComparePromise,
bcryptGenSaltPromise,
bcryptHashPromise,
createPrivateKey,
getPublicKey
} from './core-utils'
import { logger } from './logger'
import { AccountInstance } from '../models/account/account-interface'
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 }
}
function isSignatureVerified (fromAccount: AccountInstance, signedDocument: object) {
const publicKeyObject = {
'@context': jsig.SECURITY_CONTEXT_URL,
'@id': fromAccount.url,
'@type': 'CryptographicKey',
owner: fromAccount.url,
publicKeyPem: fromAccount.publicKey
}
const publicKeyOwnerObject = {
'@context': jsig.SECURITY_CONTEXT_URL,
'@id': fromAccount.url,
publicKey: [ publicKeyObject ]
}
const options = {
publicKey: publicKeyObject,
publicKeyOwner: publicKeyOwnerObject
}
return jsig.promises.verify(signedDocument, options)
.catch(err => {
logger.error('Cannot check signature.', err)
return false
})
}
function signObject (byAccount: AccountInstance, data: any) {
const options = {
privateKeyPem: byAccount.privateKey,
creator: byAccount.url
}
return jsig.promises.sign(data, options)
}
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)
}
// ---------------------------------------------------------------------------
export {
isSignatureVerified,
comparePassword,
createPrivateAndPublicKeys,
cryptPassword,
signObject
}
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