1 files changed, 97 insertions, 0 deletions
diff --git a/src/libzrtpcpp/crypto/openssl/sha256.cpp b/src/libzrtpcpp/crypto/openssl/sha256.cpp
new file mode 100644
index 0000000..2163a6d
--- /dev/null
+++ b/src/libzrtpcpp/crypto/openssl/sha256.cpp
@@ -0,0 +1,97 @@
+/*
+  Copyright (C) 2005, 2004 Erik Eliasson, Johan Bilien
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+ * In addition, as a special exception, the copyright holders give
+ * permission to link the code of portions of this program with the
+ * OpenSSL library under certain conditions as described in each
+ * individual source file, and distribute linked combinations
+ * including the two.
+ * You must obey the GNU General Public License in all respects
+ * for all of the code used other than OpenSSL.  If you modify
+ * file(s) with this exception, you may extend this exception to your
+ * version of the file(s), but you are not obligated to do so.  If you
+ * do not wish to do so, delete this exception statement from your
+ * version.  If you delete this exception statement from all source
+ * files in the program, then also delete it here.
+ */
+
+/**
+ * @author Erik Eliasson <eliasson@it.kth.se>
+ *          Johan Bilien <jobi@via.ecp.fr>
+ *	    Werner Dittmann <Werner.Dittmann@t-online.de>
+ */
+
+#include <openssl/crypto.h>
+#include <openssl/sha.h>
+
+#include <libzrtpcpp/crypto/sha256.h>
+
+void sha256(unsigned char *data, unsigned int data_length,
+	    unsigned char *digest )
+{
+	SHA256(data, data_length, digest);
+}
+
+void sha256(unsigned char * data_chunks[],
+	    unsigned int data_chunck_length[],
+	    unsigned char *digest)
+{
+	SHA256_CTX ctx;
+	SHA256_Init( &ctx);
+	while(*data_chunks) {
+		SHA256_Update(&ctx, *data_chunks, *data_chunck_length);
+		data_chunks++;
+		data_chunck_length++;
+	}
+	SHA256_Final(digest, &ctx);
+}
+
+void* createSha256Context()
+{
+    SHA256_CTX* ctx = (SHA256_CTX*)malloc(sizeof (SHA256_CTX));
+    SHA256_Init(ctx);
+    return (void*)ctx;
+}
+
+void closeSha256Context(void* ctx, unsigned char* digest)
+{
+    SHA256_CTX* hd = (SHA256_CTX*)ctx;
+
+    if (digest != NULL) {
+        SHA256_Final(digest, hd);
+    }
+    free(hd);
+}
+
+void sha256Ctx(void* ctx, unsigned char* data, 
+               unsigned int dataLength)
+{
+    SHA256_CTX* hd = (SHA256_CTX*)ctx;
+    SHA256_Update(hd, data, dataLength);
+}
+
+void sha256Ctx(void* ctx, unsigned char* dataChunks[],
+               unsigned int dataChunkLength[])
+{
+    SHA256_CTX* hd = (SHA256_CTX*)ctx;
+
+    while (*dataChunks) {
+        SHA256_Update (hd, *dataChunks, *dataChunkLength);
+        dataChunks++;
+        dataChunkLength++;
+    }
+}