国密p7验签，sm3withsm2

Question

我想咨询下java实现国密p7软验签，使用sm3withsm2，只需要验签，需要从签名值里解析出证书验签，可用的内容只有原文和签名值
原文：123456
签名值：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

Answer 1

我本地根据这个博客 https://blog.csdn.net/pridas/article/details/86118774 测试是ok的，但是你的这个代码应该是BASE64了，然后你的userId我也不知道是哪个。
测试代码

import org.bouncycastle.util.encoders.Hex;

import java.security.KeyPair;
import java.security.PublicKey;

public class SM2P7Verify {

    public static void main(String[] args) throws Exception {
        String s = "123456";
        byte[] userId = "1234567812345678".getBytes();
        KeyPair keyPair = GmUtil.generateKeyPair();
        PublicKey aPublic = keyPair.getPublic();
        byte[] bytes = GmUtil.signSm3WithSm2(s.getBytes(), userId,  keyPair.getPrivate());
        System.out.println(Hex.toHexString(bytes));
        boolean b = GmUtil.verifySm3WithSm2( s.getBytes(), userId, bytes, aPublic);
        System.out.println(b);
    }

}

测试结果

188dce4b8db74c8b2f940c759fc9ff747b11dc40d0d33be661e276b4567561d066fdf8697b4c4ee702ab44282751603779f370f0759ff388f6fb1003aafa6e2a
true