@polkadot/util-crypto/sr25519/sign.js

A collection of useful crypto utilities for @polkadot

import { u8aToU8a } from '@polkadot/util';
import { sr25519Sign as wasmSign } from '@polkadot/wasm-crypto';
/**
 * @name sr25519Sign
 * @description Returns message signature of `message`, using the supplied pair
 */
export function sr25519Sign(message, { publicKey, secretKey }) {
    if (publicKey?.length !== 32) {
        throw new Error('Expected a valid publicKey, 32-bytes');
    }
    else if (secretKey?.length !== 64) {
        throw new Error('Expected a valid secretKey, 64-bytes');
    }
    return wasmSign(publicKey, secretKey, u8aToU8a(message));
}