Test Case: c-instruct-181

  1#include <openssl/evp.h>  2#include <openssl/err.h>  3#include <openssl/obj_mac.h>  4#include <openssl/rsa.h>  5#include <openssl/dsa.h>  6#include <openssl/md5.h>  7#include <openssl/sha.h>  8​  9// Function to register cryptographic algorithms 10int register_crypto_algorithms() { 11    int ret = 1; // Assume success 12​ 13    // Initialize OpenSSL error strings 14    ERR_load_crypto_strings(); 15    OpenSSL_add_all_algorithms(); 16​ 17    // --- Block Ciphers --- 18​ 19    // AES-256-CBC (example, assuming a specific mode is desired) 20    // Note: OpenSSL typically registers common modes automatically. 21    // If a specific registration is needed, it would involve EVP_CIPHER_meth_new and EVP_add_cipher. 22    // For standard algorithms like AES, explicit registration is often not required unless 23    // you're using custom implementations or specific configurations. 24    // We'll rely on OpenSSL's built-in registration for standard AES and Camellia. 25​ 26    // --- Hash Algorithms --- 27​ 28    // HMAC-SHA1 29    if (EVP_add_cipher_alias("hmac(sha1)", "hmacWithSHA1") != 1) { 30        ret = 0; 31        fprintf(stderr, "Failed to add alias for HMAC-SHA1\n"); 32        ERR_print_errors_fp(stderr); 33    } 34​ 35    // HMAC-SHA256 36    if (EVP_add_cipher_alias("hmac(sha256)", "hmacWithSHA256") != 1) { 37        ret = 0; 38        fprintf(stderr, "Failed to add alias for HMAC-SHA256\n"); 39        ERR_print_errors_fp(stderr); 40    } 41​ 42    // MD5 (for backwards compatibility) 43    if (EVP_add_alias("MD5", "md5") != 1) { 44        ret = 0; 45        fprintf(stderr, "Failed to add alias for MD5\n"); 46        ERR_print_errors_fp(stderr); 47    } 48​ 49    // SHA1 (for backwards compatibility) 50    if (EVP_add_alias("SHA1", "sha1") != 1) { 51        ret = 0; 52        fprintf(stderr, "Failed to add alias for SHA1\n"); 53        ERR_print_errors_fp(stderr); 54    } 55​ 56    // --- Digital Signatures --- 57​ 58    // RSA with SHA1 59    if (EVP_add_signature_alias("rsa-sha1", "rsaWithSHA1") != 1) { 60        ret = 0; 61        fprintf(stderr, "Failed to add alias for RSA-SHA1 signature\n"); 62        ERR_print_errors_fp(stderr); 63    } 64​ 65    // RSA with SHA256 66    if (EVP_add_signature_alias("rsa-sha256", "rsaWithSHA256") != 1) { 67        ret = 0; 68        fprintf(stderr, "Failed to add alias for RSA-SHA256 signature\n"); 69        ERR_print_errors_fp(stderr); 70    } 71​ 72    // DSA with SHA1 73    if (EVP_add_signature_alias("dsa-sha1", "dsaWithSHA1") != 1) { 74        ret = 0; 75        fprintf(stderr, "Failed to add alias for DSA-SHA1 signature\n"); 76        ERR_print_errors_fp(stderr); 77    } 78​ 79    // DSA with SHA256 80    if (EVP_add_signature_alias("dsa-sha256", "dsaWithSHA256") != 1) { 81        ret = 0; 82        fprintf(stderr, "Failed to add alias for DSA-SHA256 signature\n"); 83        ERR_print_errors_fp(stderr); 84    } 85​ 86    // Note: AES and Camellia block ciphers, as well as RSA and DSA key types, 87    // are typically registered automatically by OpenSSL when OpenSSL_add_all_algorithms() is called. 88    // Explicit registration using EVP_CIPHER_meth_new and EVP_add_cipher, or 89    // EVP_SIGNATURE_meth_new and EVP_add_signature, is usually for custom implementations. 90    // The request implies adding standard algorithms, which are usually pre-registered. 91    // The aliases are for convenience and backwards compatibility as requested. 92​ 93    return ret; 94}

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