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Update some demos

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This commit is contained in:
Zhi Guan
2018-10-31 11:03:21 +08:00
parent 9eadfd4cb6
commit 676076278d
37 changed files with 2277 additions and 141 deletions
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15
demos/sm2/Makefile Normal file
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all:
gcc keygen.c -L /usr/local/lib -lcrypto -o keygen
gcc keygen.c -DENCRYPT_KEY -DNO_PROMPT -L /usr/local/lib -lcrypto -o keygen-enc
gcc keygen.c -DENCRYPT_KEY -L /usr/local/lib -lcrypto -o keygen-enc-prompt
test:
./keygen
./keygen-enc
./keygen-enc-prompt
clean:
rm -fr a.out
rm -fr keygen
rm -fr keygen-enc
rm -fr keygen-enc-prompt

106
demos/sm2/keygen.c Normal file
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/*
* This demo shows how to:
* - generate SM2 private
* - encrypt SM2 private key with SM4
* - output public/private key in PEM format
* - generate the SM2 Z value from public key
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <libgen.h>
#include <openssl/ec.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/pem.h>
#include <openssl/sm2.h>
#include <openssl/objects.h>
#include <openssl/is_gmssl.h>
int main(int argc, char **argv)
{
int ret = -1;
char *prog = basename(argv[0]);
EC_KEY *ec_key = NULL;
EVP_PKEY *pkey = NULL;
const EVP_CIPHER *cipher = NULL;
char *pass = NULL;
char *id = "12345678";
unsigned char z[64];
size_t zlen = sizeof(z);
int i;
if (argc > 2) {
printf("usage: %s <id>\n", prog);
return -1;
}
if (argc == 2) {
id = argv[1];
}
/* generate sm2 private key using EC_KEY API */
if (!(ec_key = EC_KEY_new_by_curve_name(NID_sm2p256v1))) {
ERR_print_errors_fp(stderr);
goto end;
}
if (!EC_KEY_generate_key(ec_key)) {
ERR_print_errors_fp(stderr);
goto end;
}
/* assign EC_KEY to EVP_PKEY */
if (!(pkey = EVP_PKEY_new())) {
ERR_print_errors_fp(stderr);
goto end;
}
if (!EVP_PKEY_assign_EC_KEY(pkey, ec_key)) {
ERR_print_errors_fp(stderr);
goto end;
}
ec_key = NULL; /* free-ed by EVP_PKEY */
#ifdef ENCRYPT_KEY
/* generate PKCS #8 EncryptedPrivateKeyInfo with SM4
* else unencrypted PKCS #8 PrivateKeyInfo is generated.
*/
cipher = EVP_sms4_cbc();
# ifdef NO_PROMPT
/* else user need to input password from prompt */
pass = "P@ssw0rd";
# endif
#endif
/* generate PKCS #8 in PEM format */
if (!PEM_write_PKCS8PrivateKey(stdout, pkey, cipher, NULL, 0, 0, pass)) {
ERR_print_errors_fp(stderr);
goto end;
}
/* generate public key in pem format */
if (!PEM_write_EC_PUBKEY(stdout, EVP_PKEY_get0_EC_KEY(pkey))) {
ERR_print_errors_fp(stderr);
goto end;
}
/* generate Z value in HEX */
if (!SM2_compute_id_digest(EVP_sm3(), id, strlen(id), z, &zlen,
EVP_PKEY_get0_EC_KEY(pkey))) {
ERR_print_errors_fp(stderr);
goto end;
}
printf("Z = ");
for (i = 0; i < zlen; i++) {
printf("%02X", z[i]);
}
printf("\n");
ret = 0;
end:
EC_KEY_free(ec_key);
EVP_PKEY_free(pkey);
return ret;
}