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defaults, validate-connection: fix structure of ADV types

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This commit is contained in:
Rajeh Taher
2025-09-28 03:58:17 +03:00
parent 7d5c28cf72
commit 1eef97aa86
2 changed files with 12 additions and 5 deletions
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src/Utils/validate-connection.ts
+6 -5
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@@ -1,7 +1,7 @@
import { Boom } from '@hapi/boom'
import { createHash } from 'crypto'
import { proto } from '../../WAProto/index.js'
import { KEY_BUNDLE_TYPE } from '../Defaults'
import { KEY_BUNDLE_TYPE, WA_ADV_ACCOUNT_SIG_PREFIX, WA_ADV_DEVICE_SIG_PREFIX, WA_ADV_HOSTED_ACCOUNT_SIG_PREFIX, WA_ADV_HOSTED_DEVICE_SIG_PREFIX } from '../Defaults'
import type { AuthenticationCreds, SignalCreds, SocketConfig } from '../Types'
import { type BinaryNode, getBinaryNodeChild, jidDecode, S_WHATSAPP_NET } from '../WABinary'
import { Curve, hmacSign } from './crypto'
@@ -142,20 +142,21 @@ export const configureSuccessfulPairing = (
)
const isHostedAccount = accountType !== undefined && accountType === proto.ADVEncryptionType.HOSTED
const hmacPrefix = isHostedAccount ? Buffer.from([6, 5]) : Buffer.alloc(0)
const advSign = hmacSign(Buffer.concat([hmacPrefix, details]), Buffer.from(advSecretKey, 'base64'))
const accountPrefix = isHostedAccount ? WA_ADV_HOSTED_ACCOUNT_SIG_PREFIX : Buffer.from([])
const advSign = hmacSign(Buffer.concat([accountPrefix, details]), Buffer.from(advSecretKey, 'base64'))
if (Buffer.compare(hmac, advSign) !== 0) {
throw new Boom('Invalid account signature')
}
const account = decodeAndHydrate(proto.ADVSignedDeviceIdentity, details)
const { accountSignatureKey, accountSignature, details: deviceDetails } = account
const accountMsg = Buffer.concat([Buffer.from([6, 0]), deviceDetails, signedIdentityKey.public])
const accountMsg = Buffer.concat([accountPrefix, deviceDetails, signedIdentityKey.public])
if (!Curve.verify(accountSignatureKey, accountMsg, accountSignature)) {
throw new Boom('Failed to verify account signature')
}
const devicePrefix = isHostedAccount ? Buffer.from([6, 6]) : Buffer.from([6, 1])
const devicePrefix = isHostedAccount ? WA_ADV_HOSTED_DEVICE_SIG_PREFIX : WA_ADV_DEVICE_SIG_PREFIX
const deviceMsg = Buffer.concat([devicePrefix, deviceDetails, signedIdentityKey.public, accountSignatureKey])
account.deviceSignature = Curve.sign(signedIdentityKey.private, deviceMsg)