保存openssl中RSA密钥对

来源：互联网发布：逃脱者2mac中文版编辑：程序博客网时间：2024/06/11 00:56

标准的openssl生成的证书的顺序是 :
[OpenSSL 测试程序: https://github.com/qianguozheng/datastructure]

如下是生成密钥对, 根据密钥并且分别保存密钥对的私钥,与公钥.

经过测试, 密钥对中的私钥可以提取出公钥, 我对其密钥不是很了解,通过测试发现是可以的. 不知道谁可以讲述下.

/* 产生RSA密钥 */RSA *rsa = RSA_new();BIGNUM* e = BN_new();/* 设置随机数长度 */BN_set_word(e, 65537);/* 生成RSA密钥对 */RSA_generate_key_ex(rsa, 2048, e, NULL);printf("BIGNUM: %s\n", BN_bn2hex(rsa->n));/* 提取私钥 */printf("PRIKEY:\n");FILE *filename = NULL;filename = fopen("privateKey.pem", "wb");PEM_write_RSAPrivateKey(filename, rsa, NULL, NULL, 0, NULL, NULL);fclose(filename);//writeRSA(rsa, NULL);/* 提取公钥 */unsigned char *n_b = (unsigned char *)calloc(RSA_size(rsa), sizeof(unsigned char));unsigned char *e_b = (unsigned char *)calloc(RSA_size(rsa), sizeof(unsigned char));int n_size = BN_bn2bin(rsa->n, n_b);int b_size = BN_bn2bin(rsa->e, e_b);RSA *pubrsa = RSA_new();pubrsa->n = BN_bin2bn(n_b, n_size, NULL);pubrsa->e = BN_bin2bn(e_b, b_size, NULL);printf("PUBKEY: \n");FILE *publicKey = NULL;publicKey = fopen("publicKey.pem", "wb");PEM_write_RSAPublicKey(publicKey, pubrsa);fclose(publicKey);RSA_free(rsa);RSA_free(pubrsa);

0 0