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Finished requestPairingCode

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This commit is contained in:
Alessandro Autiero
2023-07-16 20:14:17 +02:00
parent f498e1e56c
commit c506182035
8 changed files with 68 additions and 74 deletions
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20
src/Utils/crypto.ts
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@@ -1,8 +1,8 @@
import { createCipheriv, createDecipheriv, createHash, createHmac, randomBytes } from 'crypto'
import {createCipheriv, createDecipheriv, createHash, createHmac, pbkdf2Sync, randomBytes} from 'crypto'
import HKDF from 'futoin-hkdf'
import * as libsignal from 'libsignal'
import { KEY_BUNDLE_TYPE } from '../Defaults'
import { KeyPair } from '../Types'
import {KEY_BUNDLE_TYPE} from '../Defaults'
import {KeyPair} from '../Types'
/** prefix version byte to the pub keys, required for some curve crypto functions */
export const generateSignalPubKey = (pubKey: Uint8Array | Buffer) => (
@@ -74,6 +74,16 @@ export function aesDecryptGCM(ciphertext: Uint8Array, key: Uint8Array, iv: Uint8
return Buffer.concat([ decipher.update(enc), decipher.final() ])
}
export function aesEncryptCTR(plaintext: Uint8Array, key: Uint8Array, iv: Uint8Array) {
const cipher = createCipheriv('aes-256-ctr', key, iv)
return Buffer.concat([cipher.update(plaintext), cipher.final()])
}
export function aesDecryptCTR(ciphertext: Uint8Array, key: Uint8Array, iv: Uint8Array) {
const decipher = createDecipheriv('aes-256-ctr', key, iv)
return Buffer.concat([decipher.update(ciphertext), decipher.final()])
}
/** decrypt AES 256 CBC; where the IV is prefixed to the buffer */
export function aesDecrypt(buffer: Buffer, key: Buffer) {
return aesDecryptWithIV(buffer.slice(16, buffer.length), key, buffer.slice(0, 16))
@@ -114,4 +124,8 @@ export function md5(buffer: Buffer) {
// HKDF key expansion
export function hkdf(buffer: Uint8Array | Buffer, expandedLength: number, info: { salt?: Buffer, info?: string }) {
return HKDF(!Buffer.isBuffer(buffer) ? Buffer.from(buffer) : buffer, expandedLength, info)
}
export function derivePairingCodeKey(pairingCode: string, salt: Buffer) {
return pbkdf2Sync(pairingCode, salt, 2 << 16, 32, 'sha256')
}