generateNEARViewingKeyFromSpending()

SIP Protocol API Reference / generateNEARViewingKeyFromSpending

Function: generateNEARViewingKeyFromSpending()

generateNEARViewingKeyFromSpending(spendingPrivateKey, label?): NEARViewingKey

Defined in: @sip-protocol/sdk/dist/index-DXh2IGkz.d.ts:18694

Generate a viewing key from a spending private key

The viewing key is derived deterministically using HMAC-SHA256 with domain separation, ensuring it cannot be used to derive the spending key.

Parameters

spendingPrivateKey

`0x${string}`

The spending private key (32 bytes, hex)

label?

string

Optional label for the viewing key

Returns

NEARViewingKey

The generated viewing key with public key and hash

Example

const viewingKey = generateNEARViewingKeyFromSpending(
  spendingPrivateKey,
  'My NEAR Wallet'
)

// Share the public key for encryption
console.log('Public key:', viewingKey.publicKey)

// Use hash for on-chain announcement matching
console.log('Hash:', viewingKey.hash)