import { sm2 } from 'sm-crypto-v2';
export const signer = (privateKey: Uint8Array) => {
  return {
    async sign({ data }: { data: Uint8Array | string }) {
      const signatureHex = sm2.doSignature(
        data,
        sm2.arrayToHex(Array.from(privateKey))
      );
      return new Uint8Array(Buffer.from(signatureHex, 'hex'));
    },
  };
};

export const verifier = (publicKey: Uint8Array) => {
  return {
    async verify({
      data,
      signature,
    }: {
      data: Uint8Array | string;
      signature: Uint8Array;
    }) {
      return sm2.doVerifySignature(
        data,
        sm2.arrayToHex(Array.from(signature)),
        sm2.arrayToHex(Array.from(publicKey))
      );
    },
  };
};