SIP Protocol

1import {
2  generateStealthMetaAddress,
3  generateStealthAddress,
4  deriveStealthPrivateKey,
5  checkStealthAddress
6} from '@sip-protocol/sdk'
7
8// Step 1: Recipient generates their meta-address (do once, share publicly)
9const meta = generateStealthMetaAddress()
10console.log('Meta-address (share this):', {
11  spendingKey: meta.spendingKey.slice(0, 20) + '...',
12  viewingKey: meta.viewingKey.slice(0, 20) + '...'
13})
14
15// Step 2: Sender creates a one-time stealth address
16const stealth = generateStealthAddress(meta.spendingKey, meta.viewingKey)
17console.log('Stealth address:', stealth.address.slice(0, 20) + '...')
18console.log('Ephemeral public key:', stealth.ephemeralPublicKey.slice(0, 20) + '...')
19
20// Step 3: Recipient checks if address belongs to them
21const isForMe = checkStealthAddress(
22  stealth.address,
23  stealth.ephemeralPublicKey,
24  meta.viewingKey,
25  meta.spendingKey
26)
27console.log('Address belongs to recipient:', isForMe)
28
29// Step 4: Recipient derives private key to spend
30if (isForMe) {
31  const privateKey = deriveStealthPrivateKey(
32    stealth.ephemeralPublicKey,
33    meta.viewingPrivateKey!,
34    meta.spendingPrivateKey!
35  )
36  console.log('Can spend from stealth address!')
37}