1 files changed, 139 insertions, 0 deletions
diff --git a/src/lib/pubkey/gost_3410/gost_3410.h b/src/lib/pubkey/gost_3410/gost_3410.h
new file mode 100644
index 000000000..6b1506b10
--- /dev/null
+++ b/src/lib/pubkey/gost_3410/gost_3410.h
@@ -0,0 +1,139 @@
+/*
+* GOST 34.10-2001
+* (C) 2007 Falko Strenzke, FlexSecure GmbH
+*          Manuel Hartl, FlexSecure GmbH
+* (C) 2008-2010 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_GOST_3410_KEY_H__
+#define BOTAN_GOST_3410_KEY_H__
+
+#include <botan/ecc_key.h>
+#include <botan/pk_ops.h>
+
+namespace Botan {
+
+/**
+* GOST-34.10 Public Key
+*/
+class BOTAN_DLL GOST_3410_PublicKey : public virtual EC_PublicKey
+   {
+   public:
+
+      /**
+      * Construct a public key from a given public point.
+      * @param dom_par the domain parameters associated with this key
+      * @param public_point the public point defining this key
+      */
+      GOST_3410_PublicKey(const EC_Group& dom_par,
+                          const PointGFp& public_point) :
+         EC_PublicKey(dom_par, public_point) {}
+
+      /**
+      * Construct from X.509 algorithm id and subject public key bits
+      */
+      GOST_3410_PublicKey(const AlgorithmIdentifier& alg_id,
+                          const secure_vector<byte>& key_bits);
+
+      /**
+      * Get this keys algorithm name.
+      * @result this keys algorithm name
+      */
+      std::string algo_name() const { return "GOST-34.10"; }
+
+      AlgorithmIdentifier algorithm_identifier() const;
+
+      std::vector<byte> x509_subject_public_key() const;
+
+      /**
+      * Get the maximum number of bits allowed to be fed to this key.
+      * This is the bitlength of the order of the base point.
+
+      * @result the maximum number of input bits
+      */
+      size_t max_input_bits() const { return domain().get_order().bits(); }
+
+      size_t message_parts() const { return 2; }
+
+      size_t message_part_size() const
+         { return domain().get_order().bytes(); }
+
+   protected:
+      GOST_3410_PublicKey() {}
+   };
+
+/**
+* GOST-34.10 Private Key
+*/
+class BOTAN_DLL GOST_3410_PrivateKey : public GOST_3410_PublicKey,
+                                       public EC_PrivateKey
+   {
+   public:
+
+      GOST_3410_PrivateKey(const AlgorithmIdentifier& alg_id,
+                           const secure_vector<byte>& key_bits) :
+         EC_PrivateKey(alg_id, key_bits) {}
+
+      /**
+      * Generate a new private key
+      * @param rng a random number generator
+      * @param domain parameters to used for this key
+      * @param x the private key; if zero, a new random key is generated
+      */
+      GOST_3410_PrivateKey(RandomNumberGenerator& rng,
+                           const EC_Group& domain,
+                           const BigInt& x = 0) :
+         EC_PrivateKey(rng, domain, x) {}
+
+      AlgorithmIdentifier pkcs8_algorithm_identifier() const
+         { return EC_PublicKey::algorithm_identifier(); }
+   };
+
+/**
+* GOST-34.10 signature operation
+*/
+class BOTAN_DLL GOST_3410_Signature_Operation : public PK_Ops::Signature
+   {
+   public:
+      GOST_3410_Signature_Operation(const GOST_3410_PrivateKey& gost_3410);
+
+      size_t message_parts() const { return 2; }
+      size_t message_part_size() const { return order.bytes(); }
+      size_t max_input_bits() const { return order.bits(); }
+
+      secure_vector<byte> sign(const byte msg[], size_t msg_len,
+                              RandomNumberGenerator& rng);
+
+   private:
+      const PointGFp& base_point;
+      const BigInt& order;
+      const BigInt& x;
+   };
+
+/**
+* GOST-34.10 verification operation
+*/
+class BOTAN_DLL GOST_3410_Verification_Operation : public PK_Ops::Verification
+   {
+   public:
+      GOST_3410_Verification_Operation(const GOST_3410_PublicKey& gost);
+
+      size_t message_parts() const { return 2; }
+      size_t message_part_size() const { return order.bytes(); }
+      size_t max_input_bits() const { return order.bits(); }
+
+      bool with_recovery() const { return false; }
+
+      bool verify(const byte msg[], size_t msg_len,
+                  const byte sig[], size_t sig_len);
+   private:
+      const PointGFp& base_point;
+      const PointGFp& public_point;
+      const BigInt& order;
+   };
+
+}
+
+#endif