import { verify as secpVerify, Signature } from '@noble/secp256k1';
import { sha256 } from '@noble/hashes/sha256';
import { hexToBytes } from '@noble/hashes/utils';
/**
 * Verify secp256k1 signature over message (hash-nonce).
 * Message is hashed with SHA-256 before verification.
 */
export function verifySignature(message, signatureHex, publicKeyHex) {
    try {
        const msgHash = sha256(message);
        const sig = Signature.fromCompact(hexToBytes(signatureHex));
        const pub = hexToBytes(publicKeyHex);
        return secpVerify(sig, msgHash, pub);
    }
    catch {
        return false;
    }
}