aboutsummaryrefslogtreecommitdiffstats
path: root/SoftHSMv2/src/lib/crypto/OSSLECDH.cpp
diff options
context:
space:
mode:
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/OSSLECDH.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/OSSLECDH.cpp')
-rw-r--r--SoftHSMv2/src/lib/crypto/OSSLECDH.cpp375
1 files changed, 375 insertions, 0 deletions
diff --git a/SoftHSMv2/src/lib/crypto/OSSLECDH.cpp b/SoftHSMv2/src/lib/crypto/OSSLECDH.cpp
new file mode 100644
index 0000000..e2abaeb
--- /dev/null
+++ b/SoftHSMv2/src/lib/crypto/OSSLECDH.cpp
@@ -0,0 +1,375 @@
+/*
+ * 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.
+ */
+
+/*****************************************************************************
+ OSSLECDH.cpp
+
+ OpenSSL Diffie-Hellman asymmetric algorithm implementation
+ *****************************************************************************/
+
+#include "config.h"
+#ifdef WITH_ECC
+#include "log.h"
+#include "OSSLECDH.h"
+#include "CryptoFactory.h"
+#include "ECParameters.h"
+#include "OSSLECKeyPair.h"
+#include "OSSLUtil.h"
+#include <algorithm>
+#include <openssl/ecdh.h>
+#include <openssl/pem.h>
+#include <openssl/err.h>
+#ifdef WITH_FIPS
+#include <openssl/fips.h>
+#endif
+
+// Signing functions
+bool OSSLECDH::signInit(PrivateKey* /*privateKey*/, const AsymMech::Type /*mechanism*/,
+ const void* /* param = NULL */, const size_t /* paramLen = 0 */)
+{
+ ERROR_MSG("ECDH does not support signing");
+
+ return false;
+}
+
+bool OSSLECDH::signUpdate(const ByteString& /*dataToSign*/)
+{
+ ERROR_MSG("ECDH does not support signing");
+
+ return false;
+}
+
+bool OSSLECDH::signFinal(ByteString& /*signature*/)
+{
+ ERROR_MSG("ECDH does not support signing");
+
+ return false;
+}
+
+// Verification functions
+bool OSSLECDH::verifyInit(PublicKey* /*publicKey*/, const AsymMech::Type /*mechanism*/,
+ const void* /* param = NULL */, const size_t /* paramLen = 0 */)
+{
+ ERROR_MSG("ECDH does not support verifying");
+
+ return false;
+}
+
+bool OSSLECDH::verifyUpdate(const ByteString& /*originalData*/)
+{
+ ERROR_MSG("ECDH does not support verifying");
+
+ return false;
+}
+
+bool OSSLECDH::verifyFinal(const ByteString& /*signature*/)
+{
+ ERROR_MSG("ECDH does not support verifying");
+
+ return false;
+}
+
+// Encryption functions
+bool OSSLECDH::encrypt(PublicKey* /*publicKey*/, const ByteString& /*data*/,
+ ByteString& /*encryptedData*/, const AsymMech::Type /*padding*/)
+{
+ ERROR_MSG("ECDH does not support encryption");
+
+ return false;
+}
+
+// Decryption functions
+bool OSSLECDH::decrypt(PrivateKey* /*privateKey*/, const ByteString& /*encryptedData*/,
+ ByteString& /*data*/, const AsymMech::Type /*padding*/)
+{
+ ERROR_MSG("ECDH does not support decryption");
+
+ return false;
+}
+
+// Key factory
+bool OSSLECDH::generateKeyPair(AsymmetricKeyPair** ppKeyPair, AsymmetricParameters* parameters, RNG* /*rng = NULL */)
+{
+ // Check parameters
+ if ((ppKeyPair == NULL) ||
+ (parameters == NULL))
+ {
+ return false;
+ }
+
+ if (!parameters->areOfType(ECParameters::type))
+ {
+ ERROR_MSG("Invalid parameters supplied for ECDH key generation");
+
+ return false;
+ }
+
+ ECParameters* params = (ECParameters*) parameters;
+
+ // Generate the key-pair
+ EC_KEY* eckey = EC_KEY_new();
+
+ if (eckey == NULL)
+ {
+ ERROR_MSG("Failed to instantiate OpenSSL ECDH object");
+
+ return false;
+ }
+
+ EC_GROUP* grp = OSSL::byteString2grp(params->getEC());
+ EC_KEY_set_group(eckey, grp);
+ EC_GROUP_free(grp);
+
+ if (!EC_KEY_generate_key(eckey))
+ {
+ ERROR_MSG("ECDH key generation failed (0x%08X)", ERR_get_error());
+
+ EC_KEY_free(eckey);
+
+ return false;
+ }
+
+ // Create an asymmetric key-pair object to return
+ OSSLECKeyPair* kp = new OSSLECKeyPair();
+
+ ((OSSLECPublicKey*) kp->getPublicKey())->setFromOSSL(eckey);
+ ((OSSLECPrivateKey*) kp->getPrivateKey())->setFromOSSL(eckey);
+
+ *ppKeyPair = kp;
+
+ // Release the key
+ EC_KEY_free(eckey);
+
+ return true;
+}
+
+bool OSSLECDH::deriveKey(SymmetricKey **ppSymmetricKey, PublicKey* publicKey, PrivateKey* privateKey)
+{
+ // Check parameters
+ if ((ppSymmetricKey == NULL) ||
+ (publicKey == NULL) ||
+ (privateKey == NULL))
+ {
+ return false;
+ }
+
+ // Get keys
+ EC_KEY *pub = ((OSSLECPublicKey *)publicKey)->getOSSLKey();
+ EC_KEY *priv = ((OSSLECPrivateKey *)privateKey)->getOSSLKey();
+ if (pub == NULL || EC_KEY_get0_public_key(pub) == NULL || priv == NULL)
+ {
+ ERROR_MSG("Failed to get OpenSSL ECDH keys");
+
+ return false;
+ }
+
+ // Use the OpenSSL implementation and not any engine
+#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
+
+#ifdef WITH_FIPS
+ if (FIPS_mode())
+ {
+ ECDH_set_method(pub, FIPS_ecdh_openssl());
+ ECDH_set_method(priv, FIPS_ecdh_openssl());
+ }
+ else
+ {
+ ECDH_set_method(pub, ECDH_OpenSSL());
+ ECDH_set_method(priv, ECDH_OpenSSL());
+ }
+#else
+ ECDH_set_method(pub, ECDH_OpenSSL());
+ ECDH_set_method(priv, ECDH_OpenSSL());
+#endif
+
+#else
+ EC_KEY_set_method(pub, EC_KEY_OpenSSL());
+ EC_KEY_set_method(priv, EC_KEY_OpenSSL());
+#endif
+
+ // Derive the secret
+ ByteString secret, derivedSecret;
+ int size = ((OSSLECPublicKey *)publicKey)->getOrderLength();
+ secret.wipe(size);
+ derivedSecret.wipe(size);
+ int keySize = ECDH_compute_key(&derivedSecret[0], derivedSecret.size(), EC_KEY_get0_public_key(pub), priv, NULL);
+
+ if (keySize <= 0)
+ {
+ ERROR_MSG("ECDH 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 OSSLECDH::getMinKeySize()
+{
+ // Smallest EC group is secp112r1
+ return 112;
+}
+
+unsigned long OSSLECDH::getMaxKeySize()
+{
+ // Biggest EC group is secp521r1
+ return 521;
+}
+
+bool OSSLECDH::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);
+
+ OSSLECKeyPair* kp = new OSSLECKeyPair();
+
+ bool rv = true;
+
+ if (!((ECPublicKey*) kp->getPublicKey())->deserialise(dPub))
+ {
+ rv = false;
+ }
+
+ if (!((ECPrivateKey*) kp->getPrivateKey())->deserialise(dPriv))
+ {
+ rv = false;
+ }
+
+ if (!rv)
+ {
+ delete kp;
+
+ return false;
+ }
+
+ *ppKeyPair = kp;
+
+ return true;
+}
+
+bool OSSLECDH::reconstructPublicKey(PublicKey** ppPublicKey, ByteString& serialisedData)
+{
+ // Check input
+ if ((ppPublicKey == NULL) ||
+ (serialisedData.size() == 0))
+ {
+ return false;
+ }
+
+ OSSLECPublicKey* pub = new OSSLECPublicKey();
+
+ if (!pub->deserialise(serialisedData))
+ {
+ delete pub;
+
+ return false;
+ }
+
+ *ppPublicKey = pub;
+
+ return true;
+}
+
+bool OSSLECDH::reconstructPrivateKey(PrivateKey** ppPrivateKey, ByteString& serialisedData)
+{
+ // Check input
+ if ((ppPrivateKey == NULL) ||
+ (serialisedData.size() == 0))
+ {
+ return false;
+ }
+
+ OSSLECPrivateKey* priv = new OSSLECPrivateKey();
+
+ if (!priv->deserialise(serialisedData))
+ {
+ delete priv;
+
+ return false;
+ }
+
+ *ppPrivateKey = priv;
+
+ return true;
+}
+
+PublicKey* OSSLECDH::newPublicKey()
+{
+ return (PublicKey*) new OSSLECPublicKey();
+}
+
+PrivateKey* OSSLECDH::newPrivateKey()
+{
+ return (PrivateKey*) new OSSLECPrivateKey();
+}
+
+AsymmetricParameters* OSSLECDH::newParameters()
+{
+ return (AsymmetricParameters*) new ECParameters();
+}
+
+bool OSSLECDH::reconstructParameters(AsymmetricParameters** ppParams, ByteString& serialisedData)
+{
+ // Check input parameters
+ if ((ppParams == NULL) || (serialisedData.size() == 0))
+ {
+ return false;
+ }
+
+ ECParameters* params = new ECParameters();
+
+ if (!params->deserialise(serialisedData))
+ {
+ delete params;
+
+ return false;
+ }
+
+ *ppParams = params;
+
+ return true;
+}
+#endif