HMAC SHA256在Java上签名，在C ++私钥-公钥上验证

如何解决HMAC SHA256在Java上签名，在C ++私钥-公钥上验证

我尝试使用私钥通过Java对某些数据进行签名，然后使用公钥通过C ++对其进行验证。我使用Java作为客户端，使用C ++作为服务器。 Java在Windows上运行，C ++在Ubuntu上运行

在Java中我使用

key = "MIIEowIBAAKCAQ......s8mFoA2"; //private key
        
        
        byte[] b1 = Base64.decodeBase64(key);

this.Sign =  hmacSha256Base64("test",b1);

/**************/

public static String hmacSha256Base64(String message,byte[] secretKey) throws
      NoSuchAlgorithmException,InvalidKeyException,UnsupportedEncodingException,NoSuchProviderException {
       
       Mac hmacSha256;
       try {
        hmacSha256 = Mac.getInstance("HmacSHA256","BC");
       } catch (NoSuchAlgorithmException nsae) {
        hmacSha256 = Mac.getInstance("HMAC-SHA-256");
       }
       SecretKeySpec secretKeySpec = new SecretKeySpec(secretKey,"HmacSHA256");
       hmacSha256.init(secretKeySpec);
       // Build and return signature
       return Base64.encodeBase64String(hmacSha256.doFinal(message.getBytes("UTF-8")));
      }

在C ++上，要验证我是否真正尝试其他代码，例如：

int verify_it(const unsigned char *msg,size_t mlen,const unsigned char *val,size_t vlen,EVP_PKEY *pkey)
{
    /* Returned to caller */
    int result = 0;
    EVP_MD_CTX* ctx = NULL;
    unsigned char buff[EVP_MAX_MD_SIZE];
    size_t size;
    int rc;

    if (!msg || !mlen || !val || !vlen || !pkey)
        return 0;

    ctx = EVP_MD_CTX_new();
    if (ctx == NULL) {
        printf("EVP_MD_CTX_create failed,error 0x%lx\n",ERR_get_error());
        goto err;
    }

    rc = EVP_DigestSignInit(ctx,NULL,EVP_sha256(),pkey);
    if (rc != 1) {
        printf("EVP_DigestSignInit failed,ERR_get_error());
        goto err;
    }

    rc = EVP_DigestSignUpdate(ctx,msg,mlen);
    if (rc != 1) {
        printf("EVP_DigestSignUpdate failed,ERR_get_error());
        goto err;
    }

    size = sizeof(buff);
    rc = EVP_DigestSignFinal(ctx,buff,&size);
    if (rc != 1) {
        printf("EVP_DigestSignFinal failed,ERR_get_error());
        goto err;
    }

    result = (vlen == size) && (CRYPTO_memcmp(val,size) == 0);
err:
    EVP_MD_CTX_free(ctx);
    return result;
} 

RSA* createPublicRSA(std::string TermId,bool is_local) {
    RSA *rsa = NULL;
    BIO *keybio;

    FILE * fp = fopen((SettingsConfig["UserKeys"] + "user_public/" + TermId).c_str(),"rb");

    if (fp != 0)
    {
        rsa = PEM_read_RSA_PUBKEY(fp,&rsa,NULL);
        fclose(fp);
    }
    
    return rsa;
}

size_t calcDecodeLength(const char* b64input) {
    size_t len = strlen(b64input),padding = 0;

    if (b64input[len - 1] == '=' && b64input[len - 2] == '=') //last two chars are =
        padding = 2;
    else if (b64input[len - 1] == '=') //last char is =
        padding = 1;
    return (len * 3) / 4 - padding;
}

void Base64Decode(const char* b64message,unsigned char** buffer,size_t* length) {
    BIO *bio,*b64;

    int decodeLen = calcDecodeLength(b64message);
    *buffer = (unsigned char*)malloc(decodeLen + 1);
    (*buffer)[decodeLen] = '\0';

    bio = BIO_new_mem_buf(b64message,-1);
    b64 = BIO_new(BIO_f_base64());
    bio = BIO_push(b64,bio);

    *length = BIO_read(bio,*buffer,strlen(b64message));
    BIO_free_all(bio);
}       
std::string test = "XChhsTE....NkE="; //Sign from Java      
    std::string msg = "test";
    
    RSA* publicRSA = createPublicRSA("#1.pem",false); //public key

    EVP_PKEY* pubKey = EVP_PKEY_new();
    EVP_PKEY_assign_RSA(pubKey,publicRSA);


    unsigned char* encMessage;
    size_t encMessageLength;

    Base64Decode(test.c_str(),&encMessage,&encMessageLength);

    int result_sign = verify_it((unsigned char*)msg.c_str(),msg.length(),encMessage,encMessageLength,pubKey);

    std::cout << std::to_string(result_sign) << std::endl; //return 0

其他任何示例都返回false。不知道是什么问题，请帮忙！谢谢！

p.s。私钥：

MIIEowIBAAKCAQEAra2jau89VIfcunyOth5O08EZqFVSgVzk9Tv0ELG + zH89D / s0DMLSkACXUSYq2EFRXUS05doajB55ZVoD2qYiUjJPrZDnPS + H3F / 9tqRf + o2bbb4DWRd9MJbMt2E2Q8auIN3M49XvlQnZ2 + dSvplLepYv6H + fbILBsYfQUxh4RX5B + qvk1JdbMh1rhgLV6y9 / lYkF3UlL8W5EBA2A1YQvgrwl / nBjXTTk3PVv + OmWGFRFE0BGuf7oYEuoX86732gAtLkImqLNeNNhgUVVhFiDUOOyWjybxH9UiH28eYBZqzJlyY9D3xeC3ZUkTvfJOURK5t8vagS / t8Vu3xsMHWQ7DwIDAQABAoIBAHbNlkGp0Uwne6fdWEnfxZA4QPLTGpL / FmdiUXux + pAsYXqzHVG1Ww / CN7 / 82cYAOEYSn6OzZAGBPw1DW + uPRV7wp2xU + Ljz8H69g7ISEs1zXGTfW67v0GUSYor2ZoZKPAajcmpPh4ltqacxP3q9pdH / NlpWIpm5gAGOo8STsoHl0PItHpxYbWXRylzWIgysalYPRERicT / ibQlJ4w8jhdk1lqYZAyEg2trJXDXxiNGx19OxEfRoqDVumK + W7Pn38ye9zgjuR8TYRAMPJ1WcQ9HZPLZKbVBvjztLSvUk / Q + Z8PoomIN9s + Ggev1y6 + ccOiRWpPQLp45483k5fHHXTpECgYEA4KJsRwGTw3yomIAN + k0eFSL / + + bJJBimQXjRcc0qw + NbeLoytfVrnSCBD85QYamcB8tMg CvcCdJve46ByOsmYN6jXLdUmai4Nt / kJfUU6bWpPwBdtUOGKb9mYH4xLGnnJqyUhCJ + vhY6WrOUBXu1KfkQZUEc / R / EWyEo09UNsCsCgYEAxe3IQ2tXI1zJ91xu0R309eToH / ZhfVSKR6UBoCKptEweBBPlCj8tQcKS6Ao9Oyk28rSoAYM8thy1V9 + XItku97L + fP1JSZMkGq3g / r4DH uklshDoR3xAYOSZ6 / 89BxsV0O9a92bb0CV472wM7HHH0KAMtODwRqw8IpC5qlMHiq0CgYEAxYTMJJt0bF3 + eSmQINkSbI97 + PkVUL / XW5469H1mo0d70f6Mxj7aQwdr + I / t8BFnGzceNFmMf25z7HbgE + UAuAjMKEhjsUEzybyQhfe8TcwYZ3dQ7oPTQn4z7QDJCD6Oq + jwJkeWnlo5MWvZ6gBeyetgyUe50R6Z72920NzzzkUCgYBeY / V7YXde3 + NZWfVnONgXZCDnDUKU2HpRjHln + T / foeU2oJ478sEMeVRB4JAu5IrV2B2 / Cu0rFCnPTEvxTI2 / htcimFAZDFjNeFqyYb9vQFS / xJxhavnwu1REXaam + T2 + lEdXcPAnJZe05lyLbf + SmKE2qYcszPqoqUhB1 / LiyQKBgGDXVyw05oSvR9GGKfMKIghRimeF97 + EZhS718zcuDqXJ8Qmn + S + qrrwvn1X7TZbZ3bnM6JSnC5FcgLLVTWulLShjIo2ctsqaZUPnUJTBPoCJMkmGCR8H6XaVuFlfElT / jXglqwS + UkMMM2WPkDubnLzuTuslH1DJnrBBs8mFoA2

公钥：

-----公钥-MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAra2jau89VIfcunyOth5O 08EZqFVSgVzk9Tv0ELG + zH89D / s0DMLSkACXUSYq2EFRXUS05doajB55ZVoD2qYi UjJPrZDnPS + H3f / 9tqRf + o2bbb4DWRd9MJbMt2E2Q8auIN3M49XvlQnZ2 + dSvplL epYv6H + fbILBsYfQUxh4RX5B + qvk1JdbMh1rhgLV6y9 / lYkF3UlL8W5EBA2A1YQv 抓取/ nBjXTTk3PVv + OmWGFRFE0BGuf7oYEuoX86732gAtLkImqLNeNNhgUVVhFiD UOOyWjybxH9UiH28eYBZqzJlyY9D3xeC3ZUkTvfJOURK5t8vagS / t8Vu3xsMHWQ7 迪达卡 -----结束公钥-----

消息：12105333071

来自Java的签名：XChhsTE + Yr4wkiibvTFiLTMhJ8tLqYo7WQs /// VtNkE =

解决方法

仅使用HMACSHA256与私钥/公钥签名不同。 HMACSHA256的全名是“基于哈希的消息身份验证代码”，您可以使用相同的“密钥”对它进行“签名”和“验证”，该“密钥”只是字节数组，与私钥或公钥无关。

您当然可以将私钥/公钥的编码字节作为输入，但是这样做时（我不建议这样做）您需要将相同密钥传递给验证部分。

我设置了两个小程序来演示其工作原理。对于Java，我使用您的代码，除了将Bouncy Castle用作“本地” Java外应该有这个内置。同样，我也没有内置apache-Base64-conversion。 C＃部分是同一程序，但是具有“验证”输出。

两个代码示例都没有任何特殊处理，仅用于教育目的。

Java代码的结果

HMAC SHA256 sign on Java,Verify on C++ private-public keys
hmacSha256 (Base64): /1qkanJi8onWOxVe02MO/Wf1922aKzSTSfJk6E7o1x0=

C＃代码的结果

HMAC SHA256 sign on Java,Verify on C++ private-public keys
HMACSHA256 in C#: /1qkanJi8onWOxVe02MO/Wf1922aKzSTSfJk6E7o1x0=
HMACSHA256 Java : /1qkanJi8onWOxVe02MO/Wf1922aKzSTSfJk6E7o1x0=
Hashes are equal: True

Java代码：

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import java.io.UnsupportedEncodingException;
import java.nio.charset.StandardCharsets;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.util.Base64;

public class Org {
    public static void main(String[] args) throws NoSuchAlgorithmException,InvalidKeyException,UnsupportedEncodingException {
        System.out.println("HMAC SHA256 sign on Java,Verify on C++ private-public keys");
        String message = "12105333071";
        String key = "12345678901234567";
        String result = hmacSha256Base64(message,key.getBytes(StandardCharsets.UTF_8));
        System.out.println("hmacSha256 (Base64): " + result);
    }
    public static String hmacSha256Base64(String message,byte[] secretKey) throws
            NoSuchAlgorithmException,UnsupportedEncodingException {

        Mac hmacSha256;
        try {
            hmacSha256 = Mac.getInstance("HmacSHA256");
        } catch (NoSuchAlgorithmException nsae) {
            hmacSha256 = Mac.getInstance("HMAC-SHA-256");
        }
        SecretKeySpec secretKeySpec = new SecretKeySpec(secretKey,"HmacSHA256");
        hmacSha256.init(secretKeySpec);
        // Build and return signature
        return Base64.getEncoder().encodeToString(hmacSha256.doFinal(message.getBytes("UTF-8")));
    }
}

C＃代码：

using System;
using System.Text;
using System.Security.Cryptography;

class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("HMAC SHA256 sign on Java,Verify on C++ private-public keys");
            string message = "12105333071";
            string key = "12345678901234567";
            string expectedHashBase64 = "/1qkanJi8onWOxVe02MO/Wf1922aKzSTSfJk6E7o1x0="; // from Java
            // generate HMACSHA256
            string hmacSha256DigestBase64 = HmacSha256DigestBase64(key,message);
            Console.WriteLine("HMACSHA256 in C#: " + hmacSha256DigestBase64);
            Console.WriteLine("HMACSHA256 Java : " + expectedHashBase64);
            Console.WriteLine("Hashes are equal: " + hmacSha256DigestBase64.Equals(expectedHashBase64,StringComparison.OrdinalIgnoreCase));
            //Console.ReadLine();
        }
    
        private static string HmacSha256DigestBase64(string secret,string message)
        {
            ASCIIEncoding encoding = new ASCIIEncoding();
            byte[] keyBytes = encoding.GetBytes(secret);
            byte[] messageBytes = encoding.GetBytes(message);
            System.Security.Cryptography.HMACSHA256 cryptographer = new System.Security.Cryptography.HMACSHA256(keyBytes);
            byte[] bytes = cryptographer.ComputeHash(messageBytes);
        return Convert.ToBase64String(bytes);
        }
}

完成集合的 Golang 代码（经过测试以产生与 Michael Fehr 的 java 代码形式完全相同的结果：

package main

import (
    "crypto/hmac"
    "crypto/sha256"
    "fmt"
    b64 "encoding/base64"
)

func main() {

    secret := "12345678901234567"
    data := "12105333071"
    fmt.Printf("Secret: %s Data: %s\n",secret,data)

    // Create a new HMAC by defining the hash type and the key (as byte array)
    h := hmac.New(sha256.New,[]byte(secret))

    // Write Data to it
    h.Write([]byte(data))

    // Get result and base64 encode the string
    sha := b64.StdEncoding.EncodeToString(h.Sum(nil))

    fmt.Println("Result: " + sha)

}

HMAC SHA256在Java上签名，在C ++私钥-公钥上验证

如何解决HMAC SHA256在Java上签名，在C ++私钥-公钥上验证

解决方法

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