Android/Python如何验证签名SHA256withRSA和PKCS1填充

import java.security.KeyFactory;
import java.security.PublicKey;
import java.security.Signature;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
import java.util.Base64;

public class SignatureVerifier {
    public static boolean verifySignature(String signature, String data, String certificate) {
        try {
            // 解码签名数据和原始数据
            byte[] signatureBytes = Base64.getDecoder().decode(signature);
            byte[] dataBytes = Base64.getDecoder().decode(data);

            // 加载公钥证书
            CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
            X509Certificate x509Certificate = (X509Certificate) certificateFactory.generateCertificate(new ByteArrayInputStream(Base64.getDecoder().decode(certificate)));

            // 验证签名
            Signature sig = Signature.getInstance("SHA256withRSA");
            sig.initVerify(x509Certificate.getPublicKey());
            sig.update(dataBytes);
            return sig.verify(signatureBytes);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return false;
    }
}

from cryptography.hazmat.primitives import hashes
from cryptography.hazmat.primitives.asymmetric import padding
from cryptography.hazmat.primitives.serialization import load_pem_public_key
import base64

def verify_signature(signature, data, certificate):
    try:
        # 解码签名数据和原始数据
        signature_bytes = base64.b64decode(signature)
        data_bytes = base64.b64decode(data)

        # 加载公钥证书
        public_key = load_pem_public_key(certificate.encode())

        # 验证签名
        public_key.verify(
            signature_bytes,
            data_bytes,
            padding.PKCS1v15(),
            hashes.SHA256()
        )
        return True
    except Exception as e:
        print(e)
    return False