1 files changed, 48 insertions, 0 deletions
diff --git a/lib/pk_pad/emsa1/emsa1.h b/lib/pk_pad/emsa1/emsa1.h
new file mode 100644
index 000000000..f84ca5ae7
--- /dev/null
+++ b/lib/pk_pad/emsa1/emsa1.h
@@ -0,0 +1,48 @@
+/*
+* EMSA1
+* (C) 1999-2007 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_EMSA1_H__
+#define BOTAN_EMSA1_H__
+
+#include <botan/emsa.h>
+#include <botan/hash.h>
+
+namespace Botan {
+
+/**
+* EMSA1 from IEEE 1363
+* Essentially, sign the hash directly
+*/
+class BOTAN_DLL EMSA1 : public EMSA
+   {
+   public:
+      /**
+      * @param h the hash object to use
+      */
+      EMSA1(HashFunction* h) : hash(h) {}
+      ~EMSA1() { delete hash; }
+   protected:
+      /**
+      * @return const pointer to the underlying hash
+      */
+      const HashFunction* hash_ptr() const { return hash; }
+   private:
+      void update(const byte[], size_t);
+      secure_vector<byte> raw_data();
+
+      secure_vector<byte> encoding_of(const secure_vector<byte>&, size_t,
+                                     RandomNumberGenerator& rng);
+
+      bool verify(const secure_vector<byte>&, const secure_vector<byte>&,
+                  size_t);
+
+      HashFunction* hash;
+   };
+
+}
+
+#endif