请用代码举例说明

好的，以下是一个使用SKF库创建ECC公钥并传入SKF_DigestInit()函数中使用的示例代码（仅供参考）：

#include <stdio.h>
#include <stdlib.h>
#include "skf.h"

int main()
{
    ULONG rv;
    HAPPLICATION hApp;
    HCONTAINER hContainer;
    HSESSION hSession;
    ECCPUBLICKEYBLOB eccPubKeyBlob;
    BYTE data[1024];
    ULONG dataLen = sizeof(data);
    BYTE digest[32];
    ULONG digestLen = sizeof(digest);
 
    // 连接设备并打开应用程序
    rv = SKF_ConnectDev("any", &hDev);
    if(rv != SAR_OK) {
        printf("connect device failed!\n");
        return -1;
    }
    rv = SKF_OpenApplication(hDev, "test", &hApp);
    if(rv != SAR_OK) {
        printf("open application failed!\n");
        return -1;
    }

    // 打开容器
    rv = SKF_OpenContainer(hApp, "test", &hContainer);
    if(rv != SAR_OK) {
        printf("open container failed!\n");
        return -1;
    }

    // 开始会话
    rv = SKF_StartSession(hDev, &hSession);
    if(rv != SAR_OK) {
        printf("start session failed!\n");
        return -1;
    }

    // 生成ECC密钥对
    rv = SKF_GenECCKeyPair(hSession, SGD_SM2_1, &eccPubKeyBlob);
    if(rv != SAR_OK) {
        printf("generate ECC key pair failed!\n");
        return -1;
    }

    // 将ECC公钥传入SKF_DigestInit()函数中
    rv = SKF_DigestInit(hSession, SGD_SM3, &eccPubKeyBlob, sizeof(eccPubKeyBlob));
    if(rv != SAR_OK) {
        printf("initialize digest failed!\n");
        return -1;
    }

    // 对数据进行消息摘要计算
    rv = SKF_Digest(hSession, data, dataLen, digest, &digestLen);
    if(rv != SAR_OK) {
        printf("digest data failed!\n");
        return -1;
    }

    // 结束会话
    rv = SKF_CloseSession(hSession);
    if(rv != SAR_OK) {
        printf("close session failed!\n");
        return -1;
    }

    // 释放资源
    SKF_CloseContainer(hContainer);
    SKF_CloseApplication(hApp);
    SKF_DisConnectDev(hDev);

    return 0;
}

需要注意的是，以上代码仅供参考，具体实现方式可能会有所不同，具体见SKF库对应的API文档。