1 #include <openssl/evp.h>
2 #include <openssl/hmac.h>
7 unsigned char key[32] = {0};
8 unsigned char iv[16] = {0};
9 unsigned char in[16] = {0};
10 unsigned char out[32]; /* at least one block longer than in[] */
13 EVP_EncryptInit(&ctx, EVP_aes_256_cbc(), key, iv);
14 EVP_EncryptUpdate(&ctx, out, &outlen1, in, sizeof(in));
15 EVP_EncryptFinal(&ctx, out + outlen1, &outlen2);
17 printf("ciphertext length: %d\n", outlen1 + outlen2);
22 // result = HMAC(EVP_sha256(), key, 999, data, 888, NULL, NULL);
26 // HMAC_CTX_init(&hctx);
27 // if (HMAC_Init(&hctx, key, keylen, EVP_sha1())) success;
28 // if (HMAC_Update(&hctx, data, datalen)) success;
29 // if (HMAC_Final(&hctx, &digest, &digestlen)) success
30 // HMAC_CTX_cleanup(&hctx);