为什么C语言用openssl中的函数EC_KEY *PEM_read_ECPrivateKey()打不开密钥文件?
char *infile;
FILE *p_file = NULL;
infile= *(++argv);
printf("%s\n",infile);
if (NULL == (p_file = fopen(infile, "r"))) {//这一步正常
printf("failed to open the private key file\n");
goto err;
}
if ((sk_eckey = PEM_read_ECPrivateKey(p_file, NULL, NULL, NULL)) == NULL)//这一步就打开失败,进入打印
{printf("open file failed!\n");
goto err;
}