@robertprp/intents-sdk/dist/esm/core/solana/utils.js

Shogun Network Intent-based cross-chain swaps SDK

import BN from 'bn.js';
import { PublicKey } from '@solana/web3.js';
import jsUtilities from 'js-sha3';
export function genSecretHashAndNumber(order) {
    const tokenOut = new PublicKey(order.tokenOut);
    const receiver = new PublicKey(order.destinationAddress);
    const extraTransfers = order.extraTransfers ?? [];
    const secretNumber = new BN(crypto.getRandomValues(new Uint8Array(8)));
    const fullArray = [
        ...tokenOut.toBuffer(),
        ...receiver.toBuffer(),
        ...Buffer.concat(extraTransfers.map((t) => Buffer.concat([new PublicKey(t.token).toBuffer(), new PublicKey(t.receiver).toBuffer()]))),
        ...secretNumber.toArrayLike(Buffer, 'le', 8),
    ];
    const value = jsUtilities.keccak256(Uint8Array.from(fullArray));
    const secretHash = [...Uint8Array.from(Buffer.from(value, 'hex'))];
    return { secretHash, secretNumber: secretNumber.toString() };
}
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