packages/util-crypto/src/sr25519/verify.ts
// Copyright 2017-2024 @polkadot/util-crypto authors & contributors
// SPDX-License-Identifier: Apache-2.0
import { u8aToU8a } from '@polkadot/util';
import { sr25519Verify as wasmVerify } from '@polkadot/wasm-crypto';
/**
* @name sr25519Verify
* @description Verifies the signature of `message`, using the supplied pair
*/
export function sr25519Verify (message: string | Uint8Array, signature: string | Uint8Array, publicKey: string | Uint8Array): boolean {
const publicKeyU8a = u8aToU8a(publicKey);
const signatureU8a = u8aToU8a(signature);
if (publicKeyU8a.length !== 32) {
throw new Error(`Invalid publicKey, received ${publicKeyU8a.length} bytes, expected 32`);
} else if (signatureU8a.length !== 64) {
throw new Error(`Invalid signature, received ${signatureU8a.length} bytes, expected 64`);
}
return wasmVerify(signatureU8a, u8aToU8a(message), publicKeyU8a);
}