openSSL:如何初始化公钥加密密钥?
问题描述:
对于使用OpenSSL API公共密钥加密,如何是关键(公共&私人)初始化在C程序中,鉴于* .PEM文件格式* .key文件格式的私钥和公钥:openSSL:如何初始化公钥加密密钥?
EVP_PKEY *key;
/* How is key initialized ?
*/
ctx = EVP_PKEY_CTX_new(key);
谢谢。
答
试试这个:
EVP_PKEY *pkey;
FILE *f = fopen("<path for your PEM or DER encoded key>", "rb");
if (f == NULL){
// error handling...
}
//if your key is PEM encoded use this
pkey = PEM_read_PUBKEY(f, NULL, NULL, NULL); // pkey now contains the pubKey.
//We are passing NULL to the others parameters because we dont need password to read a public key
//if your key is DER encoded use this
pkey = d2i_PUBKEY_fp(f, NULL);
if (pkey == NULL){
// error handling...
}
我没有测试,但应该工作。
这存储私钥,公钥如何,以及如何使用问题中提到的文件初始化? – Jake 2012-04-16 16:33:18
EVP_PKEY *pkey; FILE *f = fopen("", "rb"); if (f == NULL){ // error handling... } \t //if your key is PEM encoded use this pkey = PEM_read_PUBKEY(f, NULL, NULL, NULL); // pkey now contains the pubKey. \t //We are passing NULL to the others parameters because we dont need password to read a public key \t //if your key is DER encoded use this pkey = d2i_PUBKEY_fp(f, NULL); if (pkey == NULL){ // error handling... }
我没有测试,但应该工作。 – Giovani 2012-04-16 16:49:54如果密钥是* .key格式,该怎么办? – Jake 2012-04-16 17:09:58