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authorNingSun <ning.sun@intel.com>2018-02-08 08:34:03 -0800
committerNingSun <ning.sun@intel.com>2018-02-08 09:14:52 -0800
commit0c89b3ccba7c9b7332ab67ae1936aff51ca62367 (patch)
tree70c1b1d160d4c6d0a83395ca9a87c1264d0d3439 /SoftHSMv2/src/lib/crypto/OSSLDH.cpp
parent945613b4db4e07f75d2bc7463db580ddfaa700fd (diff)
Initial sshsm project structure
Issue-ID: AAF-94 Change-Id: I5e82fff418e7567b161acf9b98013a9b85ffc5b4 Signed-off-by: NingSun <ning.sun@intel.com>
Diffstat (limited to 'SoftHSMv2/src/lib/crypto/OSSLDH.cpp')
-rw-r--r--SoftHSMv2/src/lib/crypto/OSSLDH.cpp430
1 files changed, 430 insertions, 0 deletions
diff --git a/SoftHSMv2/src/lib/crypto/OSSLDH.cpp b/SoftHSMv2/src/lib/crypto/OSSLDH.cpp
new file mode 100644
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+++ b/SoftHSMv2/src/lib/crypto/OSSLDH.cpp
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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.
+ */
+
+/*****************************************************************************
+ OSSLDH.cpp
+
+ OpenSSL Diffie-Hellman asymmetric algorithm implementation
+ *****************************************************************************/
+
+#include "config.h"
+#include "log.h"
+#include "OSSLDH.h"
+#include "CryptoFactory.h"
+#include "DHParameters.h"
+#include "OSSLComp.h"
+#include "OSSLDHKeyPair.h"
+#include "OSSLUtil.h"
+#include <algorithm>
+#include <openssl/dh.h>
+#include <openssl/pem.h>
+#include <openssl/err.h>
+
+// Signing functions
+bool OSSLDH::signInit(PrivateKey* /*privateKey*/, const AsymMech::Type /*mechanism*/,
+ const void* /* param = NULL */, const size_t /* paramLen = 0 */)
+{
+ ERROR_MSG("DH does not support signing");
+
+ return false;
+}
+
+bool OSSLDH::signUpdate(const ByteString& /*dataToSign*/)
+{
+ ERROR_MSG("DH does not support signing");
+
+ return false;
+}
+
+bool OSSLDH::signFinal(ByteString& /*signature*/)
+{
+ ERROR_MSG("DH does not support signing");
+
+ return false;
+}
+
+// Verification functions
+bool OSSLDH::verifyInit(PublicKey* /*publicKey*/, const AsymMech::Type /*mechanism*/,
+ const void* /* param = NULL */, const size_t /* paramLen = 0 */)
+{
+ ERROR_MSG("DH does not support verifying");
+
+ return false;
+}
+
+bool OSSLDH::verifyUpdate(const ByteString& /*originalData*/)
+{
+ ERROR_MSG("DH does not support verifying");
+
+ return false;
+}
+
+bool OSSLDH::verifyFinal(const ByteString& /*signature*/)
+{
+ ERROR_MSG("DH does not support verifying");
+
+ return false;
+}
+
+// Encryption functions
+bool OSSLDH::encrypt(PublicKey* /*publicKey*/, const ByteString& /*data*/,
+ ByteString& /*encryptedData*/, const AsymMech::Type /*padding*/)
+{
+ ERROR_MSG("DH does not support encryption");
+
+ return false;
+}
+
+// Decryption functions
+bool OSSLDH::decrypt(PrivateKey* /*privateKey*/, const ByteString& /*encryptedData*/,
+ ByteString& /*data*/, const AsymMech::Type /*padding*/)
+{
+ ERROR_MSG("DH does not support decryption");
+
+ return false;
+}
+
+// Key factory
+bool OSSLDH::generateKeyPair(AsymmetricKeyPair** ppKeyPair, AsymmetricParameters* parameters, RNG* /*rng = NULL */)
+{
+ // Check parameters
+ if ((ppKeyPair == NULL) ||
+ (parameters == NULL))
+ {
+ return false;
+ }
+
+ if (!parameters->areOfType(DHParameters::type))
+ {
+ ERROR_MSG("Invalid parameters supplied for DH key generation");
+
+ return false;
+ }
+
+ DHParameters* params = (DHParameters*) parameters;
+
+ // Generate the key-pair
+ DH* dh = DH_new();
+ if (dh == NULL)
+ {
+ ERROR_MSG("Failed to instantiate OpenSSL DH object");
+
+ return false;
+ }
+
+ BIGNUM* bn_p = OSSL::byteString2bn(params->getP());
+ BIGNUM* bn_g = OSSL::byteString2bn(params->getG());
+
+ if (!DH_set0_pqg(dh, bn_p, NULL, bn_g))
+ {
+ ERROR_MSG("DH set pqg failed (0x%08X)", ERR_get_error());
+
+ BN_free(bn_p);
+ BN_free(bn_g);
+ DH_free(dh);
+
+ return false;
+ }
+
+ if (params->getXBitLength() > 0)
+ {
+ if (!DH_set_length(dh, params->getXBitLength()))
+ {
+ ERROR_MSG("DH set length failed (0x%08X)", ERR_get_error());
+
+ DH_free(dh);
+
+ return false;
+ }
+ }
+
+ if (DH_generate_key(dh) != 1)
+ {
+ ERROR_MSG("DH key generation failed (0x%08X)", ERR_get_error());
+
+ DH_free(dh);
+
+ return false;
+ }
+
+ // Create an asymmetric key-pair object to return
+ OSSLDHKeyPair* kp = new OSSLDHKeyPair();
+
+ ((OSSLDHPublicKey*) kp->getPublicKey())->setFromOSSL(dh);
+ ((OSSLDHPrivateKey*) kp->getPrivateKey())->setFromOSSL(dh);
+
+ *ppKeyPair = kp;
+
+ // Release the key
+ DH_free(dh);
+
+ return true;
+}
+
+bool OSSLDH::deriveKey(SymmetricKey **ppSymmetricKey, PublicKey* publicKey, PrivateKey* privateKey)
+{
+ // Check parameters
+ if ((ppSymmetricKey == NULL) ||
+ (publicKey == NULL) ||
+ (privateKey == NULL))
+ {
+ return false;
+ }
+
+ // Get keys
+ DH *pub = ((OSSLDHPublicKey *)publicKey)->getOSSLKey();
+ DH *priv = ((OSSLDHPrivateKey *)privateKey)->getOSSLKey();
+ if (pub == NULL || priv == NULL)
+ {
+ ERROR_MSG("Failed to get OpenSSL DH keys");
+
+ return false;
+ }
+ const BIGNUM* bn_pub_key = NULL;
+ DH_get0_key(pub, &bn_pub_key, NULL);
+ if (bn_pub_key == NULL)
+ {
+ ERROR_MSG("Failed to get OpenSSL DH keys");
+
+ return false;
+ }
+
+ // Derive the secret
+ ByteString secret, derivedSecret;
+ int size = DH_size(priv);
+ secret.wipe(size);
+ derivedSecret.wipe(size);
+ int keySize = DH_compute_key(&derivedSecret[0], bn_pub_key, priv);
+
+ if (keySize <= 0)
+ {
+ ERROR_MSG("DH key derivation failed (0x%08X)", ERR_get_error());
+
+ return false;
+ }
+
+ // We compensate that OpenSSL removes leading zeros
+ memcpy(&secret[0] + size - keySize, &derivedSecret[0], keySize);
+
+ *ppSymmetricKey = new SymmetricKey(secret.size() * 8);
+ if (*ppSymmetricKey == NULL)
+ return false;
+ if (!(*ppSymmetricKey)->setKeyBits(secret))
+ {
+ delete *ppSymmetricKey;
+ *ppSymmetricKey = NULL;
+ return false;
+ }
+
+ return true;
+}
+
+unsigned long OSSLDH::getMinKeySize()
+{
+#ifdef WITH_FIPS
+ // OPENSSL_DH_FIPS_MIN_MODULUS_BITS is 1024
+ return 1024;
+#else
+ return 512;
+#endif
+}
+
+unsigned long OSSLDH::getMaxKeySize()
+{
+ return OPENSSL_DH_MAX_MODULUS_BITS;
+}
+
+bool OSSLDH::generateParameters(AsymmetricParameters** ppParams, void* parameters /* = NULL */, RNG* /*rng = NULL*/)
+{
+ if ((ppParams == NULL) || (parameters == NULL))
+ {
+ return false;
+ }
+
+ size_t bitLen = (size_t) parameters;
+
+ if (bitLen < getMinKeySize() || bitLen > getMaxKeySize())
+ {
+ ERROR_MSG("This DH key size is not supported");
+
+ return false;
+ }
+
+ DH* dh = DH_new();
+ if (dh == NULL)
+ {
+ ERROR_MSG("Failed to create DH object");
+
+ return false;
+ }
+
+ if (!DH_generate_parameters_ex(dh, bitLen, 2, NULL))
+ {
+ ERROR_MSG("Failed to generate %d bit DH parameters", bitLen);
+
+ DH_free(dh);
+
+ return false;
+ }
+
+ // Store the DH parameters
+ DHParameters* params = new DHParameters();
+
+ const BIGNUM* bn_p = NULL;
+ const BIGNUM* bn_g = NULL;
+
+ DH_get0_pqg(dh, &bn_p, NULL, &bn_g);
+ ByteString p = OSSL::bn2ByteString(bn_p); params->setP(p);
+ ByteString g = OSSL::bn2ByteString(bn_g); params->setG(g);
+
+ *ppParams = params;
+
+ DH_free(dh);
+
+ return true;
+}
+
+bool OSSLDH::reconstructKeyPair(AsymmetricKeyPair** ppKeyPair, ByteString& serialisedData)
+{
+ // Check input
+ if ((ppKeyPair == NULL) ||
+ (serialisedData.size() == 0))
+ {
+ return false;
+ }
+
+ ByteString dPub = ByteString::chainDeserialise(serialisedData);
+ ByteString dPriv = ByteString::chainDeserialise(serialisedData);
+
+ OSSLDHKeyPair* kp = new OSSLDHKeyPair();
+
+ bool rv = true;
+
+ if (!((DHPublicKey*) kp->getPublicKey())->deserialise(dPub))
+ {
+ rv = false;
+ }
+
+ if (!((DHPrivateKey*) kp->getPrivateKey())->deserialise(dPriv))
+ {
+ rv = false;
+ }
+
+ if (!rv)
+ {
+ delete kp;
+
+ return false;
+ }
+
+ *ppKeyPair = kp;
+
+ return true;
+}
+
+bool OSSLDH::reconstructPublicKey(PublicKey** ppPublicKey, ByteString& serialisedData)
+{
+ // Check input
+ if ((ppPublicKey == NULL) ||
+ (serialisedData.size() == 0))
+ {
+ return false;
+ }
+
+ OSSLDHPublicKey* pub = new OSSLDHPublicKey();
+
+ if (!pub->deserialise(serialisedData))
+ {
+ delete pub;
+
+ return false;
+ }
+
+ *ppPublicKey = pub;
+
+ return true;
+}
+
+bool OSSLDH::reconstructPrivateKey(PrivateKey** ppPrivateKey, ByteString& serialisedData)
+{
+ // Check input
+ if ((ppPrivateKey == NULL) ||
+ (serialisedData.size() == 0))
+ {
+ return false;
+ }
+
+ OSSLDHPrivateKey* priv = new OSSLDHPrivateKey();
+
+ if (!priv->deserialise(serialisedData))
+ {
+ delete priv;
+
+ return false;
+ }
+
+ *ppPrivateKey = priv;
+
+ return true;
+}
+
+PublicKey* OSSLDH::newPublicKey()
+{
+ return (PublicKey*) new OSSLDHPublicKey();
+}
+
+PrivateKey* OSSLDH::newPrivateKey()
+{
+ return (PrivateKey*) new OSSLDHPrivateKey();
+}
+
+AsymmetricParameters* OSSLDH::newParameters()
+{
+ return (AsymmetricParameters*) new DHParameters();
+}
+
+bool OSSLDH::reconstructParameters(AsymmetricParameters** ppParams, ByteString& serialisedData)
+{
+ // Check input parameters
+ if ((ppParams == NULL) || (serialisedData.size() == 0))
+ {
+ return false;
+ }
+
+ DHParameters* params = new DHParameters();
+
+ if (!params->deserialise(serialisedData))
+ {
+ delete params;
+
+ return false;
+ }
+
+ *ppParams = params;
+
+ return true;
+}
+