@polkadot/util-crypto/sr25519/pair/fromSeed.js

A collection of useful crypto utilities for @polkadot

import * as sr25519 from '@scure/sr25519';
import { u8aToU8a } from '@polkadot/util';
/**
 * @name sr25519PairFromSeed
 * @description Returns a object containing a `publicKey` & `secretKey` generated from the supplied seed.
 */
export function sr25519PairFromSeed(seed) {
    const seedU8a = u8aToU8a(seed);
    if (seedU8a.length !== 32) {
        throw new Error(`Expected a seed matching 32 bytes, found ${seedU8a.length}`);
    }
    const sec = sr25519.secretFromSeed(seedU8a);
    const pub = sr25519.getPublicKey(sec);
    return {
        publicKey: pub,
        secretKey: sec
    };
}