From 0c89b3ccba7c9b7332ab67ae1936aff51ca62367 Mon Sep 17 00:00:00 2001 From: NingSun Date: Thu, 8 Feb 2018 08:34:03 -0800 Subject: Initial sshsm project structure Issue-ID: AAF-94 Change-Id: I5e82fff418e7567b161acf9b98013a9b85ffc5b4 Signed-off-by: NingSun --- SoftHSMv2/src/lib/crypto/OSSLEVPHashAlgorithm.cpp | 133 ++++++++++++++++++++++ 1 file changed, 133 insertions(+) create mode 100644 SoftHSMv2/src/lib/crypto/OSSLEVPHashAlgorithm.cpp (limited to 'SoftHSMv2/src/lib/crypto/OSSLEVPHashAlgorithm.cpp') diff --git a/SoftHSMv2/src/lib/crypto/OSSLEVPHashAlgorithm.cpp b/SoftHSMv2/src/lib/crypto/OSSLEVPHashAlgorithm.cpp new file mode 100644 index 0000000..a1b4f73 --- /dev/null +++ b/SoftHSMv2/src/lib/crypto/OSSLEVPHashAlgorithm.cpp @@ -0,0 +1,133 @@ +/* + * 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. + */ + +/***************************************************************************** + OSSLEVPHashAlgorithm.cpp + + Base class for OpenSSL hash algorithm classes + *****************************************************************************/ + +#include "config.h" +#include "OSSLEVPHashAlgorithm.h" +#include "OSSLComp.h" + +// Destructor +OSSLEVPHashAlgorithm::~OSSLEVPHashAlgorithm() +{ + EVP_MD_CTX_free(curCTX); +} + +// Hashing functions +bool OSSLEVPHashAlgorithm::hashInit() +{ + if (!HashAlgorithm::hashInit()) + { + return false; + } + + // Initialize the context + curCTX = EVP_MD_CTX_new(); + if (curCTX == NULL) + { + ERROR_MSG("Failed to allocate space for EVP_MD_CTX"); + + return false; + } + + // Initialize EVP digesting + if (!EVP_DigestInit_ex(curCTX, getEVPHash(), NULL)) + { + ERROR_MSG("EVP_DigestInit failed"); + + EVP_MD_CTX_free(curCTX); + curCTX = NULL; + + ByteString dummy; + HashAlgorithm::hashFinal(dummy); + + return false; + } + + return true; +} + +bool OSSLEVPHashAlgorithm::hashUpdate(const ByteString& data) +{ + if (!HashAlgorithm::hashUpdate(data)) + { + return false; + } + + // Continue digesting + if (data.size() == 0) + { + return true; + } + + if (!EVP_DigestUpdate(curCTX, (unsigned char*) data.const_byte_str(), data.size())) + { + ERROR_MSG("EVP_DigestUpdate failed"); + + EVP_MD_CTX_free(curCTX); + curCTX = NULL; + + ByteString dummy; + HashAlgorithm::hashFinal(dummy); + + return false; + } + + return true; +} + +bool OSSLEVPHashAlgorithm::hashFinal(ByteString& hashedData) +{ + if (!HashAlgorithm::hashFinal(hashedData)) + { + return false; + } + + hashedData.resize(EVP_MD_size(getEVPHash())); + unsigned int outLen = hashedData.size(); + + if (!EVP_DigestFinal_ex(curCTX, &hashedData[0], &outLen)) + { + ERROR_MSG("EVP_DigestFinal failed"); + + EVP_MD_CTX_free(curCTX); + curCTX = NULL; + + return false; + } + + hashedData.resize(outLen); + + EVP_MD_CTX_free(curCTX); + curCTX = NULL; + + return true; +} + -- cgit 1.2.3-korg