Split ECDSA and ECKAEG implementatations apart

1 files changed, 99 insertions, 0 deletions

diff --git a/src/pubkey/ecdsa/ecdsa_sig.h b/src/pubkey/ecdsa/ecdsa_sig.h
new file mode 100644
index 000000000..c92a24a7f
--- /dev/null
+++ b/src/pubkey/ecdsa/ecdsa_sig.h
@@ -0,0 +1,99 @@
+/*************************************************
+* ECDSA Header File                              *
+* (C) 2007 Falko Strenzke, FlexSecure GmbH       *
+* (C) 2008 Jack Lloyd                            *
+*************************************************/
+
+#ifndef BOTAN_ECDSA_SIGNATURE_H__
+#define BOTAN_ECDSA_SIGNATURE_H__
+
+#include <botan/bigint.h>
+#include <botan/der_enc.h>
+#include <botan/ber_dec.h>
+
+namespace Botan {
+
+class ECDSA_Signature_Decoder;
+class ECDSA_Signature_Encoder;
+
+class ECDSA_Signature
+   {
+      friend class ECDSA_Signature_Decoder;
+      friend class ECDSA_Signature_Encoder;
+   public:
+      ECDSA_Signature(const BigInt& r, const BigInt& s);
+      ECDSA_Signature()
+         {}
+      ;
+      ECDSA_Signature(ECDSA_Signature const& other);
+      ECDSA_Signature const& operator=(ECDSA_Signature const& other);
+
+      BigInt const get_r() const
+         {
+         return m_r;
+         }
+      BigInt const get_s() const
+         {
+         return m_s;
+         }
+      /**
+      * return the r||s
+      */
+      SecureVector<byte> const get_concatenation() const;
+
+
+      ECDSA_Signature_Encoder* x509_encoder() const;
+      ECDSA_Signature_Decoder* x509_decoder();
+   private:
+      BigInt m_r;
+      BigInt m_s;
+   };
+
+bool operator== ( ECDSA_Signature const& lhs, ECDSA_Signature const& rhs );
+inline bool operator!= ( ECDSA_Signature const& lhs, ECDSA_Signature const& rhs )
+   {
+   return !operator== ( lhs, rhs );
+   }
+
+class ECDSA_Signature_Decoder
+   {
+   public:
+      void signature_bits(const MemoryRegion<byte>& bits)
+         {
+         BER_Decoder(bits)
+            .start_cons(SEQUENCE)
+            .decode(m_signature->m_r)
+            .decode(m_signature->m_s)
+            .verify_end()
+            .end_cons();
+         }
+      ECDSA_Signature_Decoder(ECDSA_Signature* signature) : m_signature(signature)
+         {}
+   private:
+      ECDSA_Signature* m_signature;
+   };
+
+class ECDSA_Signature_Encoder
+   {
+   public:
+      MemoryVector<byte> signature_bits() const
+         {
+         return DER_Encoder()
+            .start_cons(SEQUENCE)
+            .encode(m_signature->m_r)
+            .encode(m_signature->m_s)
+            .end_cons()
+            .get_contents();
+         }
+      ECDSA_Signature_Encoder(const ECDSA_Signature* signature) : m_signature(signature)
+         {}
+   private:
+      const ECDSA_Signature* m_signature;
+   };
+
+ECDSA_Signature const decode_seq(MemoryRegion<byte> const& seq);
+ECDSA_Signature const decode_concatenation(MemoryRegion<byte> const& concatenation);
+
+}
+
+#endif