1 files changed, 92 insertions, 0 deletions
diff --git a/src/core/pk_util.h b/src/core/pk_util.h
new file mode 100644
index 000000000..aa7a71234
--- /dev/null
+++ b/src/core/pk_util.h
@@ -0,0 +1,92 @@
+/*************************************************
+* PK Utility Classes Header File                 *
+* (C) 1999-2007 Jack Lloyd                       *
+*************************************************/
+
+#ifndef BOTAN_PUBKEY_UTIL_H__
+#define BOTAN_PUBKEY_UTIL_H__
+
+#include <botan/base.h>
+#include <botan/rng.h>
+
+namespace Botan {
+
+/*************************************************
+* Encoding Method for Encryption                 *
+*************************************************/
+class BOTAN_DLL EME
+   {
+   public:
+      virtual u32bit maximum_input_size(u32bit) const = 0;
+
+      SecureVector<byte> encode(const byte[], u32bit, u32bit,
+                                RandomNumberGenerator&) const;
+      SecureVector<byte> encode(const MemoryRegion<byte>&, u32bit,
+                                RandomNumberGenerator&) const;
+
+      SecureVector<byte> decode(const byte[], u32bit, u32bit) const;
+      SecureVector<byte> decode(const MemoryRegion<byte>&, u32bit) const;
+
+      virtual ~EME() {}
+   private:
+      virtual SecureVector<byte> pad(const byte[], u32bit, u32bit,
+                                     RandomNumberGenerator&) const = 0;
+
+      virtual SecureVector<byte> unpad(const byte[], u32bit, u32bit) const = 0;
+   };
+
+/*************************************************
+* Encoding Method for Signatures, Appendix       *
+*************************************************/
+class BOTAN_DLL EMSA
+   {
+   public:
+      virtual void update(const byte[], u32bit) = 0;
+      virtual SecureVector<byte> raw_data() = 0;
+
+      virtual SecureVector<byte> encoding_of(const MemoryRegion<byte>&,
+                                             u32bit,
+                                             RandomNumberGenerator& rng) = 0;
+
+      virtual bool verify(const MemoryRegion<byte>&, const MemoryRegion<byte>&,
+                          u32bit) throw() = 0;
+      virtual ~EMSA() {}
+   };
+
+/*************************************************
+* Key Derivation Function                        *
+*************************************************/
+class BOTAN_DLL KDF
+   {
+   public:
+      SecureVector<byte> derive_key(u32bit, const MemoryRegion<byte>&,
+                                    const std::string& = "") const;
+      SecureVector<byte> derive_key(u32bit, const MemoryRegion<byte>&,
+                                    const MemoryRegion<byte>&) const;
+      SecureVector<byte> derive_key(u32bit, const MemoryRegion<byte>&,
+                                    const byte[], u32bit) const;
+
+      SecureVector<byte> derive_key(u32bit, const byte[], u32bit,
+                                    const std::string& = "") const;
+      SecureVector<byte> derive_key(u32bit, const byte[], u32bit,
+                                    const byte[], u32bit) const;
+
+      virtual ~KDF() {}
+   private:
+      virtual SecureVector<byte> derive(u32bit, const byte[], u32bit,
+                                        const byte[], u32bit) const = 0;
+   };
+
+/*************************************************
+* Mask Generation Function                       *
+*************************************************/
+class BOTAN_DLL MGF
+   {
+   public:
+      virtual void mask(const byte[], u32bit, byte[], u32bit) const = 0;
+      virtual ~MGF() {}
+   };
+
+}
+
+#endif