breakPublicKeyIntoTwoParts

client

breakPublicKeyIntoTwoParts(publicKey): [U128, U128]

Defined in: src/utils/miscellaneous.ts:493

Splits a Solana public key into two 128-bit limbs.

Parameters

publicKey

SolanaAddress

The SolanaAddress to split.

Returns

[U128, U128]

A tuple [lo, hi] of U128 values representing the first and second halves of the public key bytes, interpreted as little-endian 128-bit integers.

Remarks

This is useful when a 256-bit public key needs to be represented as two field elements (e.g. for zero-knowledge circuits or Poseidon hashing) without losing information.

Example

const [lo, hi] = breakPublicKeyIntoTwoParts(userPublicKey);
console.log(lo.toString(), hi.toString());