C语言使用PKCS11接口生成SM2密钥对的代码

以下是使用PKCS11接口在C语言中生成SM2密钥对的示例代码：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <dlfcn.h>

#include "pkcs11.h"

// PKCS11函数指针
CK_FUNCTION_LIST_PTR pFunctionList = NULL;

// 打开PKCS11库
CK_RV OpenPkcs11Library(char *libraryPath)
{
    void *pLib = dlopen(libraryPath, RTLD_NOW | RTLD_GLOBAL);
    if (pLib == NULL)
    {
        printf("Failed to open PKCS11 library.\n");
        return CKR_GENERAL_ERROR;
    }

    CK_C_GetFunctionList pGetFunctionList = (CK_C_GetFunctionList)dlsym(pLib, "C_GetFunctionList");
    if (pGetFunctionList == NULL)
    {
        printf("Failed to get PKCS11 function list.\n");
        return CKR_GENERAL_ERROR;
    }

    CK_RV rv = pGetFunctionList(&pFunctionList);
    if (rv != CKR_OK)
    {
        printf("Failed to get PKCS11 function list.\n");
        return rv;
    }

    return CKR_OK;
}

// 初始化PKCS11库
CK_RV InitializePkcs11(CK_UTF8CHAR_PTR pPin)
{
    CK_RV rv = pFunctionList->C_Initialize(NULL);
    if (rv != CKR_OK)
    {
        printf("Failed to initialize PKCS11 library.\n");
        return rv;
    }

    // 登录
    CK_SESSION_HANDLE hSession;
    rv = pFunctionList->C_OpenSession(0, CKF_SERIAL_SESSION | CKF_RW_SESSION, NULL, NULL, &hSession);
    if (rv != CKR_OK)
    {
        printf("Failed to open PKCS11 session.\n");
        return rv;
    }

    rv = pFunctionList->C_Login(hSession, CKU_USER, pPin, strlen(pPin));
    if (rv != CKR_OK)
    {
        printf("Failed to login PKCS11 session.\n");
        return rv;
    }

    return CKR_OK;
}

// 生成SM2密钥对
CK_RV GenerateSM2KeyPair()
{
    CK_RV rv;

    // 生成密钥对的机制
    CK_MECHANISM mechanism = {CKM_SM2_KEY_PAIR_GEN, NULL, 0};

    // 密钥模板
    CK_ATTRIBUTE publicKeyTemplate[] = {
        {CKA_CLASS, &CKO_PUBLIC_KEY, sizeof(CK_OBJECT_CLASS)},
        {CKA_KEY_TYPE, &CKK_SM2, sizeof(CK_KEY_TYPE)},
        {CKA_TOKEN, &CK_TRUE, sizeof(CK_BBOOL)},
        {CKA_VERIFY, &CK_TRUE, sizeof(CK_BBOOL)},
        {CKA_ENCRYPT, &CK_TRUE, sizeof(CK_BBOOL)},
        {CKA_WRAP, &CK_TRUE, sizeof(CK_BBOOL)},
        {CKA_PUBLIC_EXPONENT, NULL, 0},
        {CKA_LABEL, "SM2 Public Key", strlen("SM2 Public Key")},
    };

    CK_ATTRIBUTE privateKeyTemplate[] = {
        {CKA_CLASS, &CKO_PRIVATE_KEY, sizeof(CK_OBJECT_CLASS)},
        {CKA_KEY_TYPE, &CKK_SM2, sizeof(CK_KEY_TYPE)},
        {CKA_TOKEN, &CK_TRUE, sizeof(CK_BBOOL)},
        {CKA_SIGN, &CK_TRUE, sizeof(CK_BBOOL)},
        {CKA_DECRYPT, &CK_TRUE, sizeof(CK_BBOOL)},
        {CKA_UNWRAP, &CK_TRUE, sizeof(CK_BBOOL)},
        {CKA_PRIVATE, &CK_TRUE, sizeof(CK_BBOOL)},
        {CKA_SENSITIVE, &CK_TRUE, sizeof(CK_BBOOL)},
        {CKA_LABEL, "SM2 Private Key", strlen("SM2 Private Key")},
    };

    CK_OBJECT_HANDLE hPublicKey, hPrivateKey;
    rv = pFunctionList->C_GenerateKeyPair(pFunctionList->C_OpenSession, &mechanism,
                                          publicKeyTemplate, sizeof(publicKeyTemplate) / sizeof(CK_ATTRIBUTE),
                                          privateKeyTemplate, sizeof(privateKeyTemplate) / sizeof(CK_ATTRIBUTE),
                                          &hPublicKey, &hPrivateKey);
    if (rv != CKR_OK)
    {
        printf("Failed to generate SM2 key pair.\n");
        return rv;
    }

    return CKR_OK;
}

// 关闭PKCS11库
CK_RV FinalizePkcs11()
{
    CK_RV rv = pFunctionList->C_Finalize(NULL);
    if (rv != CKR_OK)
    {
        printf("Failed to finalize PKCS11 library.\n");
        return rv;
    }

    return CKR_OK;
}

int main()
{
    char *libraryPath = "/path/to/pkcs11.so";
    char *pin = "123456";

    CK_RV rv = OpenPkcs11Library(libraryPath);
    if (rv != CKR_OK)
    {
        return 1;
    }

    rv = InitializePkcs11((CK_UTF8CHAR_PTR)pin);
    if (rv != CKR_OK)
    {
        return 1;
    }

    rv = GenerateSM2KeyPair();
    if (rv != CKR_OK)
    {
        return 1;
    }

    rv = FinalizePkcs11();
    if (rv != CKR_OK)
    {
        return 1;
    }

    return 0;
}

请将代码中的/path/to/pkcs11.so替换为您系统中PKCS11库的路径，将123456替换为您的PIN码。这段代码首先打开PKCS11库，然后初始化PKCS11库并登录。然后使用PKCS11接口生成SM2密钥对，最后关闭PKCS11库。注意，这里的代码只是示例，您可能需要根据您使用的具体PKCS11库的接口进行修改