summaryrefslogtreecommitdiffstats
path: root/SoftHSMv2/src/lib/crypto/OSSLEVPHashAlgorithm.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/OSSLEVPHashAlgorithm.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/OSSLEVPHashAlgorithm.cpp')
-rw-r--r--SoftHSMv2/src/lib/crypto/OSSLEVPHashAlgorithm.cpp133
1 files changed, 133 insertions, 0 deletions
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;
+}
+