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/*
* Copyright (c) 2010 SURFnet bv
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*****************************************************************************
OSSLRSAPublicKey.cpp
OpenSSL RSA public key class
*****************************************************************************/
#include "config.h"
#include "log.h"
#include "OSSLComp.h"
#include "OSSLRSAPublicKey.h"
#include "OSSLUtil.h"
#include <string.h>
#include <openssl/bn.h>
#ifdef WITH_FIPS
#include <openssl/fips.h>
#endif
// Constructors
OSSLRSAPublicKey::OSSLRSAPublicKey()
{
rsa = NULL;
}
OSSLRSAPublicKey::OSSLRSAPublicKey(const RSA* inRSA)
{
rsa = NULL;
setFromOSSL(inRSA);
}
// Destructor
OSSLRSAPublicKey::~OSSLRSAPublicKey()
{
RSA_free(rsa);
}
// The type
/*static*/ const char* OSSLRSAPublicKey::type = "OpenSSL RSA Public Key";
// Check if the key is of the given type
bool OSSLRSAPublicKey::isOfType(const char* inType)
{
return !strcmp(type, inType);
}
// Set from OpenSSL representation
void OSSLRSAPublicKey::setFromOSSL(const RSA* inRSA)
{
const BIGNUM* bn_n = NULL;
const BIGNUM* bn_e = NULL;
RSA_get0_key(inRSA, &bn_n, &bn_e, NULL);
if (bn_n)
{
ByteString inN = OSSL::bn2ByteString(bn_n);
setN(inN);
}
if (bn_e)
{
ByteString inE = OSSL::bn2ByteString(bn_e);
setE(inE);
}
}
// Setters for the RSA public key components
void OSSLRSAPublicKey::setN(const ByteString& inN)
{
RSAPublicKey::setN(inN);
if (rsa)
{
RSA_free(rsa);
rsa = NULL;
}
}
void OSSLRSAPublicKey::setE(const ByteString& inE)
{
RSAPublicKey::setE(inE);
if (rsa)
{
RSA_free(rsa);
rsa = NULL;
}
}
// Retrieve the OpenSSL representation of the key
RSA* OSSLRSAPublicKey::getOSSLKey()
{
if (rsa == NULL) createOSSLKey();
return rsa;
}
// Create the OpenSSL representation of the key
void OSSLRSAPublicKey::createOSSLKey()
{
if (rsa != NULL) return;
rsa = RSA_new();
if (rsa == NULL)
{
ERROR_MSG("Could not create RSA object");
return;
}
// Use the OpenSSL implementation and not any engine
#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
#ifdef WITH_FIPS
if (FIPS_mode())
RSA_set_method(rsa, FIPS_rsa_pkcs1_ssleay());
else
RSA_set_method(rsa, RSA_PKCS1_SSLeay());
#else
RSA_set_method(rsa, RSA_PKCS1_SSLeay());
#endif
#else
RSA_set_method(rsa, RSA_PKCS1_OpenSSL());
#endif
BIGNUM* bn_n = OSSL::byteString2bn(n);
BIGNUM* bn_e = OSSL::byteString2bn(e);
RSA_set0_key(rsa, bn_n, bn_e, NULL);
}
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