The pub_cmp() method is called when two public keys are to be compared. It MUST return 1 when the keys are equal, 0 otherwise. It's called by L<EVP_PKEY_cmp(3)>. It's called by L<EVP_PKEY_eq(3)>. The pub_print() method is called to print a public key in humanly ...
*/EVP_PKEY_copy_parameters(pkey, c->pkeys[i].privatekey); ERR_clear_error();#ifndefOPENSSL_NO_RSA/* * Don't check the public/private key, this is mostly for smart * cards. */if(EVP_PKEY_id(c->pkeys[i].privatekey) == EVP_PKEY_RSA && RSA_flags(EVP_PKEY_get0_RSA(c->pkeys[...
EC_KEY *ec =EVP_PKEY_get1_EC_KEY(pkey);constEC_POINT *pubkey = EC_KEY_get0_public_key(ec);constEC_GROUP *group = EC_KEY_get0_group(ec);intnid = EC_GROUP_get_curve_name(group);intkeysize = nid_keysize(nid); BIGNUM *x = BN_new(); BIGNUM *y = BN_new(); BIGNUM *z = ...
if (!EVP_PKEY_assign_RSA(privateKey, rsaPrivateKey)) { fprintf(stderr, "Error when initializing EVP private key.\n"); ERR_print_errors_fp(stderr); return NULL; } return privateKey; } const uint8_t* decodeWrappingKey(uint8_t const* data, const size_t data_len, uint8_t const* ...
公开密钥系统使⽤的算法最流⾏的当属 RSA 算法，它由 Ronald Rivest、Adi Shamir 和 Lenoard Adleman 于上世纪 70 年代发明，该算法的安全性基于⼤数分解的难度，它的原理如下： 设：明⽂为P，密⽂为C，加密函数E(x)，解密函数D(x)； （1）⾸先选取⼀个公钥指数 e，同时⽣成两个...
}//把文件中公钥写入到RSA结构体中PEM_read_RSAPublicKey(fp, &r, NULL, NULL); fclose(fp);if(!r) { ERR_print_errors_fp(stderr);return-1; }//2、//密钥长度intkey_size =RSA_size(r);//2通过EVP_PKEY生成EVP_PKEY_CTX上下文EVP_PKEY *pkey =EVP_PKEY_new();//设置为RSA的密钥EVP_PKEY...
ERR_print_errors_fp(stderr); EVP_PKEY_CTX_free(ctx);returnNULL; } EVP_PKEY_CTX_free(ctx); FILE*fp1 = fopen("./public.pem","w");if(!fp1) {//出错处理} PEM_write_RSAPublicKey(fp1, EVP_PKEY_get0_RSA(pkey)); FILE*fp2 = fopen("./private.pem","w");if(!fp2) ...
return pkey; } void main() { OpenSSL_add_all_ciphers(); EVP_PKEY *pkey=NULL; int len=-1; char plainText[]="[For test to public/private key encryption/decryption]"; unsigned char encData[512]; unsigned char decData[512]; pkey=getRSA(); if(pkey==NULL) { exit(-1); } len=EVP...
对于公钥,如果unsigned char数组包含的是ECC公钥的x和y坐标,我们需要先将它们转换为BIGNUM结构,然后使用OpenSSL的EVP接口来构建EVP_PKEY。 3. 使用OpenSSL的EVP接口进行转换 以下是一个示例函数,用于将包含ECC公钥x和y坐标的unsigned char数组转换为EVP_PKEY结构: ...
1、SM2实现( 利openssl的evp)加解密#include #include #include #include openssl/ec.h #include openssl/evp.h/* Main function return value:0: main function executes successfully-1: an error occurs*/ int main(void)int ret = -1, i;EVP_PKEY_CTX *pctx = NULL, *ectx = NULL; EVP_PKEY *p...