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Generate Key With Openssl
Openssl Public Key
Use Openssl To Generate Key Pair
Generate Key With Openssl
* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
* Licensed under the OpenSSL license (the 'License'). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
*/
/*
* NB: these functions have been 'upgraded', the deprecated versions (which
* are compatibility wrappers using these functions) are in rsa_depr.c. -
*/
#include <stdio.h>
#include 'internal/cryptlib.h'
#include 'rsa_locl.h'
static int rsa_builtin_keygen(RSA *rsa, int bits, BIGNUM *e_value,
* NB: this wrapper would normally be placed in rsa_lib.c and the static
* implementation would probably be in rsa_eay.c. Nonetheless, is kept here
* so that we don't introduce a new linker dependency. Eg. any application
* that wasn't previously linking object code related to key-generation won't
* have to now just because key-generation is part of RSA_METHOD.
int RSA_generate_key_ex(RSA *rsa, int bits, BIGNUM *e_value, BN_GENCB *cb)
if (rsa->meth->rsa_keygen)
return rsa->meth->rsa_keygen(rsa, bits, e_value, cb);
return rsa_builtin_keygen(rsa, bits, e_value, cb);
static int rsa_builtin_keygen(RSA *rsa, int bits, BIGNUM *e_value,
{
BIGNUM *r0 = NULL, *r1 = NULL, *r2 = NULL, *r3 = NULL, *tmp;
BN_CTX *ctx = NULL;
/*
* When generating ridiculously small keys, we can get stuck
* continually regenerating the same prime values.
if (bits < 16) {
RSAerr(RSA_F_RSA_BUILTIN_KEYGEN, RSA_R_KEY_SIZE_TOO_SMALL);
}
ctx = BN_CTX_new();
goto err;
r0 = BN_CTX_get(ctx);
r2 = BN_CTX_get(ctx);
if (r3 NULL)
bitsq = bits - bitsp;
/* We need the RSA components non-NULL */
goto err;
if (!rsa->d && ((rsa->d = BN_secure_new()) NULL))
if (!rsa->e && ((rsa->e = BN_new()) NULL))
if (!rsa->p && ((rsa->p = BN_secure_new()) NULL))
if (!rsa->q && ((rsa->q = BN_secure_new()) NULL))
if (!rsa->dmp1 && ((rsa->dmp1 = BN_secure_new()) NULL))
if (!rsa->dmq1 && ((rsa->dmq1 = BN_secure_new()) NULL))
if (!rsa->iqmp && ((rsa->iqmp = BN_secure_new()) NULL))
goto err;
/* generate p and q */
if (!BN_generate_prime_ex(rsa->p, bitsp, 0, NULL, NULL, cb))
if (!BN_sub(r2, rsa->p, BN_value_one()))
if (!BN_gcd(r1, r2, rsa->e, ctx))
if (BN_is_one(r1))
if (!BN_GENCB_call(cb, 2, n++))
}
goto err;
do {
if (!BN_generate_prime_ex(rsa->q, bitsq, 0, NULL, NULL, cb))
} while (BN_cmp(rsa->p, rsa->q) 0);
goto err;
goto err;
break;
goto err;
if (!BN_GENCB_call(cb, 3, 1))
if (BN_cmp(rsa->p, rsa->q) < 0) {
rsa->p = rsa->q;
}
/* calculate n */
goto err;
/* calculate d */
goto err; /* p-1 */
goto err; /* q-1 */
goto err; /* (p-1)(q-1) */
BIGNUM *pr0 = BN_new();
if (pr0 NULL)
BN_with_flags(pr0, r0, BN_FLG_CONSTTIME);
BN_free(pr0);
}
/* We MUST free pr0 before any further use of r0 */
}
{
goto err;
!BN_mod(rsa->dmp1, d, r1, ctx)
|| !BN_mod(rsa->dmq1, d, r2, ctx)) {
goto err;
/* We MUST free d before any further use of rsa->d */
}
{
goto err;
if (!BN_mod_inverse(rsa->iqmp, rsa->q, p, ctx)) {
goto err;
/* We MUST free p before any further use of rsa->p */
}
ok = 1;
if (ok -1) {
ok = 0;
if (ctx != NULL)
BN_CTX_free(ctx);
return ok;
Openssl Public Key
Use Openssl To Generate Key Pair
Dec 02, 2016 1. 简介 openssl rsa.h 提供了密码学中公钥加密体系的一些接口, 本文主要讨论利用rsa.h接口开发以下功能 公钥私钥的生成 公钥加密,私钥解密 私钥加密,公钥解密 签名:私钥签名 验证.
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Home
Fallout 3 License Key Generator
Windows 10 Pro N 1709 Activation Key Generator
Rsa_generate_key_ex Site Www.openssl.org
Dll Files Fixer License Key Generator Free Download
Windows 7 Home Premium 64 Bit Activation Key Generator
Gta 5 Pc Cd Key Generator Online
Wifi Password Key Generator Free Download For Windows 7
Windows 2000 Server Product Key Generator
Sims 4 Cats And Dogs License Key Generator
Hawx 2 Cd Key Generator
Word 2010 Serial Key Generator
Public Key Generation What's It Look Like
Call Of Duty Multiplayer Key Code Generator
Generate Stream Key In Obs
Far Cry Primal Uplay Cd Key Generator
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