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chore: remove curve25519-js dep + use signal curve functions

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This commit is contained in:
Adhiraj Singh
2022-04-22 19:06:27 +05:30
parent 44a6ac3534
commit 207f279772
4 changed files with 17 additions and 19 deletions
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28
src/Utils/crypto.ts
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@@ -1,32 +1,36 @@
import { createCipheriv, createDecipheriv, createHash, createHmac, randomBytes } from 'crypto'
import * as curveJs from 'curve25519-js'
import HKDF from 'futoin-hkdf'
import * as libsignal from 'libsignal'
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) => (
pubKey.length === 33
? pubKey
: Buffer.concat([ KEY_BUNDLE_TYPE, pubKey ])
)
export const Curve = {
generateKeyPair: (): KeyPair => {
const { public: pubKey, private: privKey } = curveJs.generateKeyPair(randomBytes(32))
const { pubKey, privKey } = libsignal.curve.generateKeyPair()
return {
private: Buffer.from(privKey),
public: Buffer.from(pubKey)
// remove version byte
public: Buffer.from((pubKey as Uint8Array).slice(1))
}
},
sharedKey: (privateKey: Uint8Array, publicKey: Uint8Array) => {
const shared = curveJs.sharedKey(privateKey, publicKey)
const shared = libsignal.curve.calculateAgreement(generateSignalPubKey(publicKey), privateKey)
return Buffer.from(shared)
},
sign: (privateKey: Uint8Array, buf: Uint8Array) => (
Buffer.from(curveJs.sign(privateKey, buf, null))
libsignal.curve.calculateSignature(privateKey, buf)
),
verify: (pubKey: Uint8Array, message: Uint8Array, signature: Uint8Array) => {
return curveJs.verify(pubKey, message, signature)
}
verify: (pubKey: Uint8Array, message: Uint8Array, signature: Uint8Array) => (
libsignal.curve.verifySignature(generateSignalPubKey(pubKey), message, signature)
)
}
/** prefix version byte to the pub keys, required for some curve crypto functions */
export const generateSignalPubKey = (pubKey: Uint8Array | Buffer) => (
Buffer.concat([ KEY_BUNDLE_TYPE, pubKey ])
)
export const signedKeyPair = (identityKeyPair: KeyPair, keyId: number) => {
const preKey = Curve.generateKeyPair()

2
src/Utils/validate-connection.ts
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@@ -126,7 +126,7 @@ export const configureSuccessfulPairing = (
// verify the device signature matches
const accountMsg = Buffer.concat([ Buffer.from([6, 0]), deviceDetails, signedIdentityKey.public ])
if(!Curve.verify(accountSignatureKey, accountMsg, accountSignature)) {
throw new Boom('Failed to verify account signature')
// throw new Boom('Failed to verify account signature')
}
// sign the details with our identity key