C++ OpenSSL 之二：生成RSA文件

柔情只为你懂 2022-01-06 22:23 323阅读 0赞

1.等同于生成private key： openssl genrsa -out "save\_path" 2048

2.代码如下

bool MakeRsaKeySSL(const char *savePrivateKeyFilePath, const  char *savePublicKeyFilePath) { int             ret = 0; RSA *r = NULL; BIGNUM *bne = NULL; BIO *bp_public = NULL, *bp_private = NULL; int             bits = 2048; unsigned long   e = RSA_F4; // 1. generate rsa key
        bne = BN_new(); ret = BN_set_word(bne, e); if (ret != 1) { fprintf(stderr, "MakeLocalKeySSL BN_set_word err \n"); goto free_all; } r = RSA_new(); ret = RSA_generate_key_ex(r, bits, bne, NULL); if (ret != 1) { fprintf(stderr, "MakeLocalKeySSL RSA_generate_key_ex err \n"); goto free_all; } // 2. save public key
        if (savePublicKeyFilePath != NULL) { bp_public = BIO_new_file(savePublicKeyFilePath, "w+"); ret = PEM_write_bio_RSAPublicKey(bp_public, r); if (ret != 1) { fprintf(stderr, "MakeLocalKeySSL PEM_write_bio_RSAPublicKey err \n"); goto free_all; } } // 3. save private key
        if (savePrivateKeyFilePath != NULL) { bp_private = BIO_new_file(savePrivateKeyFilePath, "w+"); ret = PEM_write_bio_RSAPrivateKey(bp_private, r, NULL, NULL, 0, NULL, NULL); } // 4. free
    free_all: BIO_free_all(bp_public); BIO_free_all(bp_private); RSA_free(r); BN_free(bne); return (ret == 1); }

以上。

[《C++ OpenSSL 之一：编译和使用》][C_ OpenSSL]  
[《C++ OpenSSL 之二：生成RSA文件》][C_ OpenSSL _RSA]  
[《C++ OpenSSL 之三：生成CSR文件》][C_ OpenSSL _CSR]  
[《C++ OpenSSL 之四：CER转换为PEM》][C_ OpenSSL _CER_PEM]  
[《C++ OpenSSL 之五：生成P12文件][C_ OpenSSL _P12]》

转载于:https://www.cnblogs.com/chevin/p/11041480.html

[C_ OpenSSL]: https://www.cnblogs.com/chevin/p/11041399.html
[C_ OpenSSL _RSA]: https://www.cnblogs.com/chevin/p/11041480.html
[C_ OpenSSL _CSR]: https://www.cnblogs.com/chevin/p/11041713.html
[C_ OpenSSL _CER_PEM]: https://www.cnblogs.com/chevin/p/11041763.html
[C_ OpenSSL _P12]: https://www.cnblogs.com/chevin/p/11041852.html