使用Java验证Golang中创建的签名

import java.security.*;
import java.security.spec.X509EncodedKeySpec;
import java.util.Base64;

public class SignatureVerification {
    public static void main(String[] args) throws Exception {
        // 获取Golang中创建的签名和公钥
        String signature = "<Golang创建的签名>";
        String publicKeyString = "<Golang创建的公钥>";

        // 将公钥字符串转换为字节数组
        byte[] publicKeyBytes = Base64.getDecoder().decode(publicKeyString);

        // 创建公钥对象
        KeyFactory keyFactory = KeyFactory.getInstance("RSA");
        PublicKey publicKey = keyFactory.generatePublic(new X509EncodedKeySpec(publicKeyBytes));

        // 创建Signature对象并初始化为验证模式
        Signature sig = Signature.getInstance("SHA256withRSA");
        sig.initVerify(publicKey);

        // 获取待验证的数据
        String data = "<待验证的数据>";

        // 更新Signature对象的数据
        sig.update(data.getBytes());

        // 将签名字符串转换为字节数组
        byte[] signatureBytes = Base64.getDecoder().decode(signature);

        // 验证签名
        boolean verified = sig.verify(signatureBytes);

        if (verified) {
            System.out.println("签名验证通过");
        } else {
            System.out.println("签名验证失败");
        }
    }
}