diff options
author | NingSun <ning.sun@intel.com> | 2018-02-08 08:34:03 -0800 |
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committer | NingSun <ning.sun@intel.com> | 2018-02-08 09:14:52 -0800 |
commit | 0c89b3ccba7c9b7332ab67ae1936aff51ca62367 (patch) | |
tree | 70c1b1d160d4c6d0a83395ca9a87c1264d0d3439 /SoftHSMv2/src/lib/crypto/OSSLECDH.cpp | |
parent | 945613b4db4e07f75d2bc7463db580ddfaa700fd (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.cpp | 375 |
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 |