1 files changed, 65 insertions, 0 deletions
diff --git a/Source/cmCryptoHash.h b/Source/cmCryptoHash.h
new file mode 100644
index 0000000..88cd240
--- /dev/null
+++ b/Source/cmCryptoHash.h
@@ -0,0 +1,65 @@
+/*============================================================================
+  CMake - Cross Platform Makefile Generator
+  Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
+
+  Distributed under the OSI-approved BSD License (the "License");
+  see accompanying file Copyright.txt for details.
+
+  This software is distributed WITHOUT ANY WARRANTY; without even the
+  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the License for more information.
+============================================================================*/
+#ifndef cmCryptoHash_h
+#define cmCryptoHash_h
+
+#include "cmStandardIncludes.h"
+
+#include <cmsys/auto_ptr.hxx>
+
+class cmCryptoHash
+{
+public:
+  virtual ~cmCryptoHash() {}
+  static cmsys::auto_ptr<cmCryptoHash> New(const char* algo);
+  std::string HashString(const std::string& input);
+  std::string HashFile(const std::string& file);
+protected:
+  virtual void Initialize()=0;
+  virtual void Append(unsigned char const*, int)=0;
+  virtual std::string Finalize()=0;
+};
+
+class cmCryptoHashMD5: public cmCryptoHash
+{
+  struct cmsysMD5_s* MD5;
+public:
+  cmCryptoHashMD5();
+  ~cmCryptoHashMD5();
+protected:
+  virtual void Initialize();
+  virtual void Append(unsigned char const* buf, int sz);
+  virtual std::string Finalize();
+};
+
+#define cmCryptoHash_SHA_CLASS_DECL(SHA) \
+  class cmCryptoHash##SHA: public cmCryptoHash \
+  { \
+    union _SHA_CTX* SHA; \
+  public: \
+    cmCryptoHash##SHA(); \
+    ~cmCryptoHash##SHA(); \
+  protected: \
+    virtual void Initialize(); \
+    virtual void Append(unsigned char const* buf, int sz); \
+    virtual std::string Finalize(); \
+  }
+
+cmCryptoHash_SHA_CLASS_DECL(SHA1);
+cmCryptoHash_SHA_CLASS_DECL(SHA224);
+cmCryptoHash_SHA_CLASS_DECL(SHA256);
+cmCryptoHash_SHA_CLASS_DECL(SHA384);
+cmCryptoHash_SHA_CLASS_DECL(SHA512);
+
+#undef cmCryptoHash_SHA_CLASS_DECL
+
+#endif