Split SHA-2 into 32 and 64 bit versions; they are totally independent

of each other anyway.

1 files changed, 56 insertions, 0 deletions

diff --git a/src/hash/sha2_32/sha2_32.h b/src/hash/sha2_32/sha2_32.h
new file mode 100644
index 000000000..a3e3a6f19
--- /dev/null
+++ b/src/hash/sha2_32/sha2_32.h
@@ -0,0 +1,56 @@
+/*
+* SHA-{224,256}
+* (C) 1999-2010 Jack Lloyd
+*     2007 FlexSecure GmbH
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_SHA_224_256_H__
+#define BOTAN_SHA_224_256_H__
+
+#include <botan/mdx_hash.h>
+
+namespace Botan {
+
+/**
+* SHA-224
+*/
+class BOTAN_DLL SHA_224 : public MDx_HashFunction
+   {
+   public:
+      void clear();
+      std::string name() const { return "SHA-224"; }
+      HashFunction* clone() const { return new SHA_224; }
+
+      SHA_224() : MDx_HashFunction(28, 64, true, true), W(64), digest(8)
+         { clear(); }
+   private:
+      void compress_n(const byte[], u32bit blocks);
+      void copy_out(byte[]);
+
+      SecureVector<u32bit> W, digest;
+   };
+
+/**
+* SHA-256
+*/
+class BOTAN_DLL SHA_256 : public MDx_HashFunction
+   {
+   public:
+      void clear();
+      std::string name() const { return "SHA-256"; }
+      HashFunction* clone() const { return new SHA_256; }
+
+      SHA_256() : MDx_HashFunction(32, 64, true, true), W(64), digest(8)
+         { clear(); }
+   private:
+      void compress_n(const byte[], u32bit blocks);
+      void copy_out(byte[]);
+
+      SecureVector<u32bit> W, digest;
+   };
+
+}
+
+#endif