7 files changed, 1290 insertions, 0 deletions
diff --git a/src/pubkey/ecdsa/ec.cpp b/src/pubkey/ecdsa/ec.cpp
new file mode 100644
index 000000000..1ab871e25
--- /dev/null
+++ b/src/pubkey/ecdsa/ec.cpp
@@ -0,0 +1,554 @@
+/*************************************************
+* ECC Key implemenation                          *
+* (C) 2007 Manuel Hartl / FlexSecure GmbH        *
+*                                                *
+*          Falko Strenzke                        *
+*          [email protected]                *
+*************************************************/
+
+#include <botan/ec.h>
+#include <botan/ecdsa.h>
+#include <botan/numthry.h>
+#include <botan/util.h>
+#include <botan/der_enc.h>
+#include <botan/ber_dec.h>
+#include <botan/secmem.h>
+#include <botan/point_gfp.h>
+
+namespace Botan {
+
+/*************************************************
+* EC_PublicKey                                   *
+*************************************************/
+void EC_PublicKey::affirm_init() const // virtual
+   {
+   if ((mp_dom_pars.get() == 0) || (mp_public_point.get() == 0))
+      {
+      throw Invalid_State("cannot use uninitialized EC_Key");
+      }
+   }
+EC_Domain_Params const EC_PublicKey::get_domain_parameters() const
+   {
+   if(!mp_dom_pars.get())
+      {
+      throw Invalid_State("EC_PublicKey::get_domain_parameters(): ec domain parameters are not yet set");
+      }
+   return *mp_dom_pars;
+   }
+bool EC_PublicKey::domain_parameters_set()
+   {
+   if (mp_dom_pars.get())
+      {
+      return true;
+      }
+   return false;
+   }
+void EC_PublicKey::X509_load_hook()
+   {
+   try
+      {
+      // the base point is checked to be on curve already when decoding it
+      affirm_init();
+      mp_public_point->check_invariants();
+      }
+   catch ( Illegal_Point exc )
+      {
+      throw Decoding_Error ( "decoded public point was found not to lie on curve" );
+      }
+   }
+
+
+X509_Encoder* EC_PublicKey::x509_encoder() const
+   {
+   class EC_Key_Encoder : public X509_Encoder
+      {
+      public:
+         AlgorithmIdentifier alg_id() const
+            {
+            key->affirm_init();
+            SecureVector<byte> params = encode_der_ec_dompar ( * ( key->mp_dom_pars ), key->m_param_enc );
+            return AlgorithmIdentifier ( key->get_oid(),
+                                         params );
+            }
+
+         MemoryVector<byte> key_bits() const
+            {
+            key->affirm_init();
+            return EC2OSP ( * ( key->mp_public_point ), PointGFp::COMPRESSED );
+
+            }
+
+         EC_Key_Encoder ( const EC_PublicKey* k ) : key ( k )
+            {}
+      private:
+         const EC_PublicKey* key;
+      };
+
+   return new EC_Key_Encoder(this);
+   }
+
+X509_Decoder* EC_PublicKey::x509_decoder()
+   {
+   class EC_Key_Decoder : public X509_Decoder
+      {
+      public:
+         void alg_id ( const AlgorithmIdentifier& alg_id )
+            {
+            key->mp_dom_pars.reset ( new EC_Domain_Params ( decode_ber_ec_dompar ( alg_id.parameters ) ) );
+            }
+
+         void key_bits ( const MemoryRegion<byte>& bits )
+            {
+            key->mp_public_point.reset ( new PointGFp ( OS2ECP ( bits, key->mp_dom_pars->get_curve() ) ) );
+            key->X509_load_hook();
+            }
+
+         EC_Key_Decoder ( EC_PublicKey* k ) : key ( k )
+            {}
+      private:
+         EC_PublicKey* key;
+      };
+
+   return new EC_Key_Decoder(this);
+   }
+
+void EC_PublicKey::set_parameter_encoding ( EC_dompar_enc type )
+   {
+   if ( ( type != ENC_EXPLICIT ) && ( type != ENC_IMPLICITCA ) && ( type != ENC_OID ) )
+      {
+      throw Invalid_Argument ( "invalid encoding type for EC-key object specified" );
+      }
+   affirm_init();
+   if ( ( mp_dom_pars->get_oid() == "" ) && ( type == ENC_OID ) )
+      {
+      throw Invalid_Argument ( "invalid encoding type ENC_OID specified for EC-key object whose corresponding domain parameters are without oid" );
+      }
+   m_param_enc = type;
+   }
+
+/********************************
+* EC_PrivateKey                 *
+********************************/
+void EC_PrivateKey::affirm_init() const // virtual
+   {
+   EC_PublicKey::affirm_init();
+   if (m_private_value == 0)
+      {
+      throw Invalid_State("cannot use EC_PrivateKey when private key is uninitialized");
+      }
+   }
+
+ECDSA_PrivateKey::ECDSA_PrivateKey(RandomNumberGenerator& rng,
+                                   const EC_Domain_Params& dom_pars)
+   {
+   mp_dom_pars = std::auto_ptr<EC_Domain_Params>(new EC_Domain_Params(dom_pars));
+   generate_private_key(rng);
+
+   try
+      {
+      mp_public_point->check_invariants();
+      }
+   catch(Illegal_Point& e)
+      {
+      throw Invalid_State("ECDSA key generation failed");
+      }
+
+   m_ecdsa_core = ECDSA_Core(*mp_dom_pars, m_private_value, *mp_public_point);
+   }
+
+/**
+* EC_PrivateKey generator
+**/
+void EC_PrivateKey::generate_private_key(RandomNumberGenerator& rng)
+   {
+   if (mp_dom_pars.get() == 0)
+      {
+      throw Invalid_State("cannot generate private key when domain parameters are not set");
+      }
+   BigInt tmp_private_value(0);
+   tmp_private_value = BigInt::random_integer(rng, 1, mp_dom_pars->get_order() );
+   mp_public_point = std::auto_ptr<PointGFp>( new PointGFp (mp_dom_pars->get_base_point()));
+   mp_public_point->mult_this_secure(tmp_private_value, mp_dom_pars->get_order(), mp_dom_pars->get_order()-1);
+
+   //assert(mp_public_point.get() != 0);
+   tmp_private_value.swap(m_private_value);
+   }
+
+/**
+* Return the PKCS #8 public key encoder
+**/
+PKCS8_Encoder* EC_PrivateKey::pkcs8_encoder() const
+   {
+   class EC_Key_Encoder : public PKCS8_Encoder
+      {
+      public:
+         AlgorithmIdentifier alg_id() const
+            {
+            key->affirm_init();
+            SecureVector<byte> params = encode_der_ec_dompar ( * ( key->mp_dom_pars ), ENC_EXPLICIT );
+            return AlgorithmIdentifier ( key->get_oid(),
+                                         params );
+            }
+
+         MemoryVector<byte> key_bits() const
+            {
+            key->affirm_init();
+            SecureVector<byte> octstr_secret = BigInt::encode_1363 ( key->m_private_value, key->m_private_value.bytes() );
+
+            return DER_Encoder()
+               .start_cons ( SEQUENCE )
+               .encode ( BigInt ( 1 ) )
+               .encode ( octstr_secret, OCTET_STRING )
+               .end_cons()
+               .get_contents();
+            }
+
+         EC_Key_Encoder ( const EC_PrivateKey* k ) : key ( k )
+            {}
+      private:
+         const EC_PrivateKey* key;
+      };
+
+   return new EC_Key_Encoder(this);
+   }
+
+/**
+* Return the PKCS #8 public key decoder
+*/
+PKCS8_Decoder* EC_PrivateKey::pkcs8_decoder(RandomNumberGenerator&)
+   {
+   class EC_Key_Decoder : public PKCS8_Decoder
+      {
+      public:
+         void alg_id ( const AlgorithmIdentifier& alg_id )
+            {
+            key->mp_dom_pars.reset ( new EC_Domain_Params ( decode_ber_ec_dompar ( alg_id.parameters ) ) );
+            }
+
+         void key_bits ( const MemoryRegion<byte>& bits )
+            {
+            u32bit version;
+            SecureVector<byte> octstr_secret;
+            BER_Decoder ( bits )
+               .start_cons ( SEQUENCE )
+               .decode ( version )
+               .decode ( octstr_secret, OCTET_STRING )
+               .verify_end()
+               .end_cons();
+            key->m_private_value = BigInt::decode ( octstr_secret, octstr_secret.size() );
+            if ( version != 1 )
+               throw Decoding_Error ( "Wrong PKCS #1 key format version for EC key" );
+            key->PKCS8_load_hook();
+            }
+
+         EC_Key_Decoder ( EC_PrivateKey* k ) : key ( k )
+            {}
+      private:
+         EC_PrivateKey* key;
+      };
+
+   return new EC_Key_Decoder(this);
+   }
+
+
+void EC_PrivateKey::PKCS8_load_hook ( bool )
+   {
+   // we cannot use affirm_init() here because mp_public_point might still be null
+   if (mp_dom_pars.get() == 0 )
+      {
+      throw Invalid_State("attempt to set public point for an uninitialized key");
+      }
+   mp_public_point.reset ( new PointGFp ( m_private_value * mp_dom_pars->get_base_point() ) );
+   mp_public_point->check_invariants();
+
+   }
+
+
+
+
+/*************************************************
+* ECDSA_PublicKey                                *
+*************************************************/
+void ECDSA_PublicKey::affirm_init() const // virtual
+   {
+   EC_PublicKey::affirm_init();
+   }
+
+void ECDSA_PublicKey::set_domain_parameters(EC_Domain_Params const& dom_pars)
+   {
+   if (mp_dom_pars.get())
+      {
+      // they are already set, we must ensure that they are equal to the arg
+      if (dom_pars != *mp_dom_pars.get())
+         {
+         throw Invalid_Argument("EC_PublicKey::set_domain_parameters(): domain parameters are already set, and they are different from the argument");
+         }
+      else
+         {
+         // they are equal, so nothing to do
+         return;
+         }
+      }
+   // set them ...
+   if (m_enc_public_point.size() == 0)
+      {
+      throw Invalid_State("EC_PublicKey::set_domain_parameters(): encoded public point isn´t set");
+      }
+
+   // now try to decode the public key ...
+   PointGFp tmp_pp(OS2ECP(m_enc_public_point, dom_pars.get_curve()));
+   try
+      {
+      tmp_pp.check_invariants();
+      }
+   catch(Illegal_Point e)
+      {
+      throw Invalid_State("EC_PublicKey::set_domain_parameters(): point does not lie on provided curve");
+      }
+   std::auto_ptr<EC_Domain_Params> p_tmp_pars(new EC_Domain_Params(dom_pars));
+   ECDSA_Core tmp_ecdsa_core( *p_tmp_pars, BigInt ( 0 ), tmp_pp );
+   mp_public_point.reset(new PointGFp(tmp_pp));
+   m_ecdsa_core = tmp_ecdsa_core;
+   mp_dom_pars = p_tmp_pars;
+   }
+
+void ECDSA_PublicKey::set_all_values ( ECDSA_PublicKey const& other )
+   {
+   m_param_enc = other.m_param_enc;
+   m_ecdsa_core = other.m_ecdsa_core;
+   m_enc_public_point = other.m_enc_public_point;
+   if ( other.mp_dom_pars.get() )
+      {
+      mp_dom_pars.reset ( new EC_Domain_Params ( * ( other.mp_dom_pars ) ) );
+      }
+   if ( other.mp_public_point.get() )
+      {
+      mp_public_point.reset ( new PointGFp ( * ( other.mp_public_point ) ) );
+      }
+   }
+ECDSA_PublicKey::ECDSA_PublicKey ( ECDSA_PublicKey const& other )
+   : Public_Key(),
+     EC_PublicKey(),
+     PK_Verifying_wo_MR_Key()
+   {
+   set_all_values ( other );
+   }
+ECDSA_PublicKey const& ECDSA_PublicKey::operator= ( ECDSA_PublicKey const& rhs )
+   {
+   set_all_values ( rhs );
+   return *this;
+   }
+bool ECDSA_PublicKey::verify ( const byte message[], u32bit mess_len, const byte signature [], u32bit sig_len ) const
+   {
+   affirm_init();
+   ECDSA_Signature sig;
+   std::auto_ptr<ECDSA_Signature_Decoder> dec(sig.x509_decoder());
+   SecureVector<byte> sv_sig;
+   sv_sig.set ( signature, sig_len );
+   dec->signature_bits ( sv_sig );
+   SecureVector<byte> sv_plain_sig = sig.get_concatenation();
+   return m_ecdsa_core.verify ( sv_plain_sig, sv_plain_sig.size(), message, mess_len );
+   }
+ECDSA_PublicKey::ECDSA_PublicKey ( EC_Domain_Params const& dom_par, PointGFp const& public_point )
+   {
+   mp_dom_pars = std::auto_ptr<EC_Domain_Params> ( new EC_Domain_Params ( dom_par ) );
+   mp_public_point = std::auto_ptr<PointGFp> ( new PointGFp ( public_point ) );
+   m_param_enc = ENC_EXPLICIT;
+   m_ecdsa_core = ECDSA_Core ( *mp_dom_pars, BigInt ( 0 ), *mp_public_point );
+   }
+void ECDSA_PublicKey::X509_load_hook()
+   {
+   EC_PublicKey::X509_load_hook();
+   EC_PublicKey::affirm_init();
+   m_ecdsa_core = ECDSA_Core ( *mp_dom_pars, BigInt ( 0 ), *mp_public_point );
+   }
+u32bit ECDSA_PublicKey::max_input_bits() const
+   {
+   if(!mp_dom_pars.get())
+      {
+      throw Invalid_State("ECDSA_PublicKey::max_input_bits(): domain parameters not set");
+      }
+   return mp_dom_pars->get_order().bits();
+   }
+
+
+/*************************
+* ECDSA_PrivateKey       *
+*************************/
+
+void ECDSA_PrivateKey::affirm_init() const // virtual
+   {
+   EC_PrivateKey::affirm_init();
+   }
+
+void ECDSA_PrivateKey::PKCS8_load_hook ( bool generated )
+   {
+   EC_PrivateKey::PKCS8_load_hook ( generated );
+   EC_PrivateKey::affirm_init();
+   m_ecdsa_core = ECDSA_Core ( *mp_dom_pars, m_private_value, *mp_public_point );
+   }
+
+
+void ECDSA_PrivateKey::set_all_values ( ECDSA_PrivateKey const& other )
+   {
+   m_private_value = other.m_private_value;
+   m_param_enc = other.m_param_enc;
+   m_ecdsa_core = other.m_ecdsa_core;
+   m_enc_public_point = other.m_enc_public_point;
+   if ( other.mp_dom_pars.get() )
+      {
+      mp_dom_pars.reset ( new EC_Domain_Params ( * ( other.mp_dom_pars ) ) );
+      }
+   if ( other.mp_public_point.get() )
+      {
+      mp_public_point.reset ( new PointGFp ( * ( other.mp_public_point ) ) );
+      }
+   }
+
+ECDSA_PrivateKey::ECDSA_PrivateKey(ECDSA_PrivateKey const& other)
+   : Public_Key(),
+     EC_PublicKey(),
+     Private_Key(),
+     ECDSA_PublicKey(),
+     EC_PrivateKey(),
+     PK_Signing_Key()
+   {
+   set_all_values(other);
+   }
+ECDSA_PrivateKey const& ECDSA_PrivateKey::operator= (ECDSA_PrivateKey const& rhs)
+   {
+   set_all_values(rhs);
+   return *this;
+   }
+
+SecureVector<byte> ECDSA_PrivateKey::sign ( const byte message [], u32bit mess_len, RandomNumberGenerator&) const
+   {
+   affirm_init();
+   SecureVector<byte> sv_sig = m_ecdsa_core.sign ( message, mess_len );
+   //code which der encodes the signature returned
+   ECDSA_Signature sig = decode_concatenation( sv_sig );
+   std::auto_ptr<ECDSA_Signature_Encoder> enc(sig.x509_encoder());
+   return enc->signature_bits();
+
+   }
+
+
+
+/*********************************
+* ECKAEG_PublicKey               *
+*********************************/
+
+void ECKAEG_PublicKey::affirm_init() const // virtual
+   {
+   EC_PublicKey::affirm_init();
+   }
+
+void ECKAEG_PublicKey::set_all_values ( ECKAEG_PublicKey const& other )
+   {
+   m_param_enc = other.m_param_enc;
+   m_eckaeg_core = other.m_eckaeg_core;
+   m_enc_public_point = other.m_enc_public_point;
+   if ( other.mp_dom_pars.get() )
+      {
+      mp_dom_pars.reset ( new EC_Domain_Params ( * ( other.mp_dom_pars ) ) );
+      }
+   if ( other.mp_public_point.get() )
+      {
+      mp_public_point.reset ( new PointGFp ( * ( other.mp_public_point ) ) );
+      }
+   }
+ECKAEG_PublicKey::ECKAEG_PublicKey ( ECKAEG_PublicKey const& other )
+   : Public_Key(),
+     EC_PublicKey()
+   {
+   set_all_values ( other );
+   }
+ECKAEG_PublicKey const& ECKAEG_PublicKey::operator= ( ECKAEG_PublicKey const& rhs )
+   {
+   set_all_values ( rhs );
+   return *this;
+   }
+
+void ECKAEG_PublicKey::X509_load_hook()
+   {
+   EC_PublicKey::X509_load_hook();
+   EC_PublicKey::affirm_init();
+   m_eckaeg_core = ECKAEG_Core ( *mp_dom_pars, BigInt ( 0 ), *mp_public_point );
+   }
+ECKAEG_PublicKey::ECKAEG_PublicKey ( EC_Domain_Params const& dom_par, PointGFp const& public_point )
+   {
+
+   mp_dom_pars = std::auto_ptr<EC_Domain_Params> ( new EC_Domain_Params ( dom_par ) );
+   mp_public_point = std::auto_ptr<PointGFp> ( new PointGFp ( public_point ) );
+   if(mp_public_point->get_curve() != mp_dom_pars->get_curve())
+      {
+      throw Invalid_Argument("ECKAEG_PublicKey(): curve of arg. point and curve of arg. domain parameters are different");
+      }
+   EC_PublicKey::affirm_init();
+   m_eckaeg_core = ECKAEG_Core ( *mp_dom_pars, BigInt ( 0 ), *mp_public_point );
+   }
+
+
+/*********************************
+* ECKAEG_PrivateKey            *
+*********************************/
+void ECKAEG_PrivateKey::affirm_init() const // virtual
+   {
+   EC_PrivateKey::affirm_init();
+   }
+void ECKAEG_PrivateKey::PKCS8_load_hook ( bool generated )
+   {
+   EC_PrivateKey::PKCS8_load_hook ( generated );
+   EC_PrivateKey::affirm_init();
+   m_eckaeg_core = ECKAEG_Core ( *mp_dom_pars, m_private_value, *mp_public_point );
+   }
+void ECKAEG_PrivateKey::set_all_values ( ECKAEG_PrivateKey const& other )
+   {
+   m_private_value = other.m_private_value;
+   m_param_enc = other.m_param_enc;
+   m_eckaeg_core = other.m_eckaeg_core;
+   m_enc_public_point = other.m_enc_public_point;
+   if ( other.mp_dom_pars.get() )
+      {
+      mp_dom_pars.reset ( new EC_Domain_Params ( * ( other.mp_dom_pars ) ) );
+      }
+   if ( other.mp_public_point.get() )
+      {
+      mp_public_point.reset ( new PointGFp ( * ( other.mp_public_point ) ) );
+      }
+   }
+
+ECKAEG_PrivateKey::ECKAEG_PrivateKey(ECKAEG_PrivateKey const& other)
+   : Public_Key(),
+     EC_PublicKey(),
+     Private_Key(),
+     ECKAEG_PublicKey(),
+     EC_PrivateKey(),
+     PK_Key_Agreement_Key()
+
+   {
+   set_all_values(other);
+   }
+ECKAEG_PrivateKey const& ECKAEG_PrivateKey::operator= (ECKAEG_PrivateKey const& rhs)
+   {
+   set_all_values(rhs);
+   return *this;
+   }
+
+/**
+* Derive a key
+*/
+SecureVector<byte> ECKAEG_PrivateKey::derive_key(const Public_Key& key) const
+   {
+   affirm_init();
+
+   const EC_PublicKey * p_ec_pk = dynamic_cast<const EC_PublicKey*>(&key);
+   if(!p_ec_pk)
+      {
+      throw Invalid_Argument("ECKAEG_PrivateKey::derive_key(): argument must be an EC_PublicKey");
+      }
+   p_ec_pk->affirm_init();
+   return m_eckaeg_core.agree ( p_ec_pk->get_public_point() );
+   }
+
+}
diff --git a/src/pubkey/ecdsa/ec.h b/src/pubkey/ecdsa/ec.h
new file mode 100644
index 000000000..7a0b3cbba
--- /dev/null
+++ b/src/pubkey/ecdsa/ec.h
@@ -0,0 +1,380 @@
+/*************************************************
+* ECDSA Header File                              *
+* (C) 2007 Falko Strenzke, FlexSecure GmbH       *
+*          Manuel hartl, FlexSecure GmbH         *
+*************************************************/
+
+#ifndef BOTAN_EC_H__
+#define BOTAN_EC_H__
+
+#include <botan/if_algo.h>
+#include <botan/bigint.h>
+#include <botan/curve_gfp.h>
+#include <botan/pk_keys.h>
+#include <botan/ec_dompar.h>
+#include <botan/ecc_core.h>
+
+namespace Botan {
+
+/**
+* This class represents abstract EC Public Keys.
+* When encoding a key via an encoder that can be accessed via
+* the corresponding member functions, the key will decide upon its
+* internally stored encoding information whether to encode itself with
+* or without domain parameters, or using the domain parameter oid.
+* Furthermore, a public key
+* without domain parameters can be decoded. In that case, it cannot be used
+* for verification until its domain parameters are set by calling the
+* corresponding member function.
+*/
+class EC_PublicKey : public virtual Public_Key
+   {
+   public:
+
+      /**
+      * Tells whether this key knows his own domain parameters.
+      * @result true if the domain parameters are set, false otherwise
+      */
+      bool domain_parameters_set();
+
+      /**
+      * Get the public point of this key.
+      * @throw Invalid_State is thrown if the
+      * domain parameters of this point are not set
+      * @result the public point of this key
+      */
+      inline Botan::PointGFp get_public_point() const
+         {
+         if (!mp_public_point.get())
+            {
+            throw Invalid_State("EC_PublicKey::get_public_point(): public point not set because ec domain parameters are not yet set");
+            }
+         return *mp_public_point;
+         }
+      /**
+      * Get the domain parameters of this key.
+      * @throw Invalid_State is thrown if the
+      * domain parameters of this point are not set
+      * @result the domain parameters of this key
+      */
+      EC_Domain_Params const get_domain_parameters() const;
+      /**
+      * Set the domain parameter encoding to be used when encoding this key.
+      * @param enc the encoding to use
+      */
+      void set_parameter_encoding(EC_dompar_enc enc);
+
+      /**
+      * Get the domain parameter encoding to be used when encoding this key.
+      * @result the encoding to use
+      */
+      inline int get_parameter_encoding() const
+         {
+         return m_param_enc;
+         }
+      //ctors
+
+      EC_PublicKey()
+         : m_param_enc(ENC_EXPLICIT)
+         {
+         //assert(mp_dom_pars.get() == 0);
+         //assert(mp_public_point.get() == 0);
+         }
+
+      /**
+      * Get an x509_encoder that can be used to encode this key.
+      * @result an x509_encoder for this key
+      */
+      X509_Encoder* x509_encoder() const;
+
+      /**
+      * Get an x509_decoder that can be used to decode a stored key into
+      * this key.
+      * @result an x509_decoder for this key
+      */
+      X509_Decoder* x509_decoder();
+
+      /**
+      * Make sure that the public point and domain parameters of this key are set.
+      * @throw Invalid_State if either of the two data members is not set
+      */
+      virtual void affirm_init() const;
+
+      virtual ~EC_PublicKey() {}
+   protected:
+      virtual void X509_load_hook();
+
+      SecureVector<byte> m_enc_public_point; // stores the public point
+
+      std::auto_ptr<EC_Domain_Params> mp_dom_pars;
+      std::auto_ptr<Botan::PointGFp> mp_public_point;
+      EC_dompar_enc m_param_enc;
+   };
+
+/**
+* This abstract class represents general EC Private Keys
+*/
+class EC_PrivateKey : public virtual EC_PublicKey, public virtual Private_Key
+   {
+   public:
+
+      /**
+      * Get an PKCS#8 encoder that can be used to encoded this key.
+      * @result an PKCS#8 encoder for this key
+      */
+      PKCS8_Encoder* pkcs8_encoder() const;
+      /**
+      * Get an PKCS#8 decoder that can be used to decoded a stored key into
+      * this key.
+      * @result an PKCS#8 decoder for this key
+      */
+      PKCS8_Decoder* pkcs8_decoder(RandomNumberGenerator&);
+      /**
+      * Get the private key value of this key object.
+      * @result the private key value of this key object
+      */
+      inline BigInt const get_value() const
+         {
+         return m_private_value;
+         }
+      /**
+      * Make sure that the public key parts of this object are set
+      * (calls EC_PublicKey::affirm_init()) as well as the private key
+      * value.
+      * @throw Invalid_State if the above conditions are not satisfied
+      */
+      virtual void affirm_init()  const;
+      virtual ~EC_PrivateKey()
+         {}
+   protected:
+      virtual void PKCS8_load_hook(bool = false);
+      void generate_private_key(RandomNumberGenerator&);
+      BigInt m_private_value;
+   };
+
+/**
+* This class represents ECDSA Public Keys.
+*/
+class ECDSA_PublicKey : public virtual EC_PublicKey, public PK_Verifying_wo_MR_Key
+   {
+   public:
+
+      /**
+      * Get this keys algorithm name.
+      * @result this keys algorithm name ("ECDSA")
+      */
+      std::string algo_name() const
+         {
+         return "ECDSA";
+         }
+
+      /**
+      * 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
+      */
+      u32bit max_input_bits() const;
+
+      /**
+      * Verify a message with this key.
+      * @param message the byte array containing the message
+      * @param mess_len the number of bytes in the message byte array
+      * @param signature the byte array containing the signature
+      * @param sig_len the number of bytes in the signature byte array
+      */
+      bool verify(const byte message[], u32bit mess_len,
+                  const byte signature [], u32bit sig_len) const;
+
+      /**
+      * Default constructor. Use this one if you want to later fill this object with data
+      * from an encoded key.
+      */
+      ECDSA_PublicKey() {}
+
+      /**
+      * 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
+      */
+      ECDSA_PublicKey(EC_Domain_Params const& dom_par, Botan::PointGFp const& public_point); // sets core
+
+
+      ECDSA_PublicKey const& operator= (ECDSA_PublicKey const& rhs);
+
+      ECDSA_PublicKey(ECDSA_PublicKey const& other);
+
+      /**
+      * Set the domain parameters of this key. This function has to be
+      * used when a key encoded without domain parameters was decoded into
+      * this key. Otherwise it will not be able to verify a signature.
+      * @param dom_pars the domain_parameters associated with this key
+      * @throw Invalid_Argument if the point was found not to be satisfying the
+      * curve equation of the provided domain parameters
+      * or if this key already has domain parameters set
+      * and these are differing from those given as the parameter
+      */
+      void set_domain_parameters(EC_Domain_Params const& dom_pars);
+
+      /**
+      * Make sure that the public point and domain parameters of this key are set.
+      * @throw Invalid_State if either of the two data members is not set
+      */
+      virtual void affirm_init() const;
+
+   protected:
+      void X509_load_hook();
+      virtual void set_all_values(ECDSA_PublicKey const& other);
+
+      ECDSA_Core m_ecdsa_core;
+   };
+/**
+* This class represents ECDSA Public Keys.
+*/
+class ECDSA_PrivateKey : public ECDSA_PublicKey, public EC_PrivateKey, public PK_Signing_Key
+   {
+   public:
+      //ctors
+      /**
+      * Default constructor. Use this one if you want to later fill this object with data
+      * from an encoded key.
+      */
+      ECDSA_PrivateKey()
+         {}
+      /**
+      * Generate a new private key
+      * @param the domain parameters to used for this key
+      */
+      ECDSA_PrivateKey(RandomNumberGenerator& rng,
+                       const EC_Domain_Params& domain);
+
+      ECDSA_PrivateKey(ECDSA_PrivateKey const& other);
+      ECDSA_PrivateKey const& operator= (ECDSA_PrivateKey const& rhs);
+
+      /**
+      * Sign a message with this key.
+      * @param message the byte array representing the message to be signed
+      * @param mess_len the length of the message byte array
+      * @result the signature
+      */
+      SecureVector<byte> sign(const byte message[], u32bit mess_len, RandomNumberGenerator& rng) const;
+      /**
+      * Make sure that the public key parts of this object are set
+      * (calls EC_PublicKey::affirm_init()) as well as the private key
+      * value.
+      * @throw Invalid_State if the above conditions are not satisfied
+      */
+      virtual void affirm_init() const;
+   protected:
+      virtual void set_all_values ( ECDSA_PrivateKey const& other );
+   private:
+      void PKCS8_load_hook(bool = false);
+   };
+
+/**
+* This class represents ECKAEG Public Keys.
+*/
+class ECKAEG_PublicKey : public virtual EC_PublicKey
+   {
+   public:
+      /**
+      * Default constructor. Use this one if you want to later fill this object with data
+      * from an encoded key.
+      */
+      ECKAEG_PublicKey()
+         {};
+      /**
+      * 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
+      */
+      ECKAEG_PublicKey(EC_Domain_Params const& dom_par, Botan::PointGFp const& public_point);
+
+      /**
+      * Get this keys algorithm name.
+      * @result this keys algorithm name
+      */
+      std::string algo_name() const
+         {
+         return "ECKAEG";
+         }
+      /**
+      * 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
+      */
+      u32bit max_input_bits() const
+         {
+         if (!mp_dom_pars.get())
+            {
+            throw Invalid_State("ECKAEG_PublicKey::max_input_bits(): domain parameters not set");
+            }
+         return mp_dom_pars->get_order().bits();
+         }
+      ECKAEG_PublicKey(ECKAEG_PublicKey const& other);
+      ECKAEG_PublicKey const& operator= (ECKAEG_PublicKey const& rhs);
+
+
+      /**
+      * Make sure that the public point and domain parameters of this key are set.
+      * @throw Invalid_State if either of the two data members is not set
+      */
+      virtual void affirm_init() const;
+   protected:
+      void X509_load_hook();
+      virtual void set_all_values ( ECKAEG_PublicKey const& other );
+
+      ECKAEG_Core m_eckaeg_core;
+   };
+
+/**
+* This class represents ECKAEG Private Keys.
+*/
+class ECKAEG_PrivateKey : public ECKAEG_PublicKey, public EC_PrivateKey, public PK_Key_Agreement_Key
+   {
+   public:
+      /**
+      * Generate a new private key
+      * @param the domain parameters to used for this key
+      */
+      ECKAEG_PrivateKey(RandomNumberGenerator& rng,
+                        EC_Domain_Params const& dom_pars)
+         {
+         mp_dom_pars = std::auto_ptr<EC_Domain_Params>(new EC_Domain_Params(dom_pars));
+         generate_private_key(rng);
+         mp_public_point->check_invariants();
+         m_eckaeg_core = ECKAEG_Core(*mp_dom_pars, m_private_value, *mp_public_point);
+         }
+      /**
+      * Default constructor. Use this one if you want to later fill this object with data
+      * from an encoded key.
+      */
+      ECKAEG_PrivateKey()
+         {}
+      ECKAEG_PrivateKey(ECKAEG_PrivateKey const& other);
+      ECKAEG_PrivateKey const& operator= (ECKAEG_PrivateKey const& rhs);
+
+      void PKCS8_load_hook(bool = false);
+
+      /**
+      * Derive a shared key with the other partys public key.
+      * @param pub_key the other partys public key
+      */
+      SecureVector<byte> derive_key(const Public_Key& pub_key) const;
+
+      /**
+      * Make sure that the public key parts of this object are set
+      * (calls EC_PublicKey::affirm_init()) as well as the private key
+      * value.
+      * @throw Invalid_State if the above conditions are not satisfied
+      */
+      virtual void affirm_init() const;
+
+   protected:
+      virtual void set_all_values ( ECKAEG_PrivateKey const& other );
+   };
+
+}
+
+#endif
diff --git a/src/pubkey/ecdsa/ecc_core.cpp b/src/pubkey/ecdsa/ecc_core.cpp
new file mode 100644
index 000000000..f644e231c
--- /dev/null
+++ b/src/pubkey/ecdsa/ecc_core.cpp
@@ -0,0 +1,92 @@
+/*************************************************
+* ECDSA/ECKAEG Core Source File                  *
+* (C) 1999-2007 Jack Lloyd                       *
+*************************************************/
+
+#include <botan/ecc_core.h>
+#include <botan/numthry.h>
+#include <botan/engine.h>
+#include <botan/parsing.h>
+#include <algorithm>
+
+namespace Botan {
+
+/*************************************************
+* ECKAEG_Core Constructor                        *
+*************************************************/
+ECKAEG_Core::ECKAEG_Core(const EC_Domain_Params& dom_pars,
+                         const BigInt& priv_key,
+                         const PointGFp& pub_key)
+   {
+   op = Engine_Core::eckaeg_op(dom_pars, priv_key, pub_key);
+   }
+
+/*************************************************
+* ECKAEG_Core Copy Constructor                   *
+*************************************************/
+ECKAEG_Core::ECKAEG_Core(const ECKAEG_Core& core)
+   {
+   op = 0;
+   if(core.op)
+      op = core.op->clone();
+   blinder = core.blinder;
+   }
+
+/*************************************************
+* ECKAEG_Core Assignment Operator                *
+*************************************************/
+ECKAEG_Core& ECKAEG_Core::operator=(const ECKAEG_Core& core)
+   {
+   delete op;
+   if(core.op)
+      op = core.op->clone();
+   blinder = core.blinder;
+   return (*this);
+   }
+
+/*************************************************
+* ECKAEG Operation                               *
+*************************************************/
+SecureVector<byte> ECKAEG_Core::agree(const PointGFp& otherKey) const
+   {
+   //assert(op.get());
+   return op->agree(otherKey);
+   }
+
+/*************************************************
+* ECDSA Operation                                *
+*************************************************/
+bool ECDSA_Core::verify(const byte signature[], u32bit sig_len,
+                        const byte message[], u32bit mess_len) const
+   {
+   //assert(op.get());
+   return op->verify(signature, sig_len, message, mess_len);
+   }
+
+SecureVector<byte> ECDSA_Core::sign(const byte message[], u32bit mess_len) const
+   {
+   //assert(op.get());
+   return op->sign(message, mess_len);
+   }
+
+ECDSA_Core& ECDSA_Core::operator=(const ECDSA_Core& core)
+   {
+   delete op;
+   if(core.op)
+      op = core.op->clone();
+   return (*this);
+   }
+
+ECDSA_Core::ECDSA_Core(const ECDSA_Core& core)
+   {
+   op = 0;
+   if(core.op)
+      op = core.op->clone();
+   }
+
+ECDSA_Core::ECDSA_Core(EC_Domain_Params const& dom_pars, const BigInt& priv_key, PointGFp const& pub_key)
+   {
+   op = Engine_Core::ecdsa_op(dom_pars, priv_key, pub_key);
+   }
+
+}
diff --git a/src/pubkey/ecdsa/ecc_core.h b/src/pubkey/ecdsa/ecc_core.h
new file mode 100644
index 000000000..4f840bf06
--- /dev/null
+++ b/src/pubkey/ecdsa/ecc_core.h
@@ -0,0 +1,69 @@
+/*************************************************
+* ECC Core Header File                           *
+* (C) 1999-2007 Jack Lloyd                       *
+* (C) 2007 FlexSecure GmbH                       *
+*************************************************/
+
+#ifndef BOTAN_ECC_CORE_H__
+#define BOTAN_ECC_CORE_H__
+
+#include <botan/bigint.h>
+#include <botan/blinding.h>
+#include <botan/pk_ops.h>
+#include <botan/ec_dompar.h>
+
+namespace Botan {
+
+/*************************************************
+* ECDSA Core                                     *
+*************************************************/
+class ECDSA_Core
+   {
+   public:
+      bool verify(const byte signature[], u32bit sig_len,
+                  const byte message[], u32bit mess_len) const;
+
+      SecureVector<byte> sign(const byte message[], u32bit mess_len) const;
+
+      ECDSA_Core& operator=(const ECDSA_Core&);
+
+      ECDSA_Core() { op = 0; }
+
+      ECDSA_Core(const ECDSA_Core&);
+
+      ECDSA_Core(const EC_Domain_Params& dom_pars,
+                 const BigInt& priv_key,
+                 const PointGFp& pub_key);
+
+      ~ECDSA_Core() { delete op; }
+   private:
+      ECDSA_Operation* op;
+   };
+
+/*************************************************
+* ECKAEG Core                                    *
+*************************************************/
+class ECKAEG_Core
+   {
+   public:
+      SecureVector<byte> agree(const PointGFp&) const;
+
+      ECKAEG_Core& operator=(const ECKAEG_Core&);
+
+      ECKAEG_Core() { op = 0; }
+
+      ECKAEG_Core(const ECKAEG_Core&);
+
+      ECKAEG_Core(const EC_Domain_Params& dom_pars,
+                  const BigInt& priv_key,
+                  PointGFp const& pub_key);
+
+      ~ECKAEG_Core() { delete op; }
+   private:
+      ECKAEG_Operation* op;
+      Blinder blinder;
+   };
+
+}
+
+#endif
diff --git a/src/pubkey/ecdsa/ecdsa.cpp b/src/pubkey/ecdsa/ecdsa.cpp
new file mode 100644
index 000000000..04dc1e529
--- /dev/null
+++ b/src/pubkey/ecdsa/ecdsa.cpp
@@ -0,0 +1,72 @@
+#include <botan/bigint.h>
+#include <botan/ecdsa.h>
+#include <memory>
+
+namespace Botan {
+
+ECDSA_Signature::ECDSA_Signature(const BigInt& r, const BigInt& s)
+   : m_r(r),
+     m_s(s)
+   {}
+
+ECDSA_Signature::ECDSA_Signature(ECDSA_Signature const& other)
+   : m_r(other.m_r),
+     m_s(other.m_s)
+   {}
+
+ECDSA_Signature const& ECDSA_Signature::operator=(ECDSA_Signature const& other)
+   {
+   m_r = other.m_r;
+   m_s = other.m_s;
+   return *this;
+   }
+
+bool operator== ( ECDSA_Signature const& lhs, ECDSA_Signature const& rhs )
+   {
+   return (lhs.get_r() == rhs.get_r() && lhs.get_s() == rhs.get_s());
+   }
+
+ECDSA_Signature_Decoder* ECDSA_Signature::x509_decoder()
+   {
+   return new ECDSA_Signature_Decoder(this);
+   }
+
+ECDSA_Signature_Encoder* ECDSA_Signature::x509_encoder() const
+   {
+   return new ECDSA_Signature_Encoder(this);
+   }
+SecureVector<byte> const ECDSA_Signature::get_concatenation() const
+   {
+   u32bit enc_len = m_r > m_s ? m_r.bytes() : m_s.bytes(); // use the larger
+   SecureVector<byte> sv_r = BigInt::encode_1363 ( m_r, enc_len );
+   SecureVector<byte> sv_s = BigInt::encode_1363 ( m_s, enc_len );
+   SecureVector<byte> result(sv_r);
+   result.append(sv_s);
+   return result;
+   }
+
+ECDSA_Signature const decode_seq(MemoryRegion<byte> const& seq)
+   {
+   ECDSA_Signature sig;
+   std::auto_ptr<ECDSA_Signature_Decoder> dec(sig.x509_decoder());
+   dec->signature_bits(seq);
+   return sig;
+   }
+
+ECDSA_Signature const decode_concatenation(MemoryRegion<byte> const& concatenation)
+   {
+   if(concatenation.size() % 2 != 0)
+      {
+      throw Invalid_Argument("Erroneous length of signature");
+      }
+   u32bit rs_len = concatenation.size()/2;
+   SecureVector<byte> sv_r;
+   SecureVector<byte> sv_s;
+   sv_r.set(concatenation.begin(), rs_len);
+   sv_s.set(&concatenation[rs_len], rs_len);
+   BigInt r = BigInt::decode ( sv_r, sv_r.size());
+   BigInt s = BigInt::decode (sv_s, sv_s.size());
+   return ECDSA_Signature(r, s);
+   }
+
+}
diff --git a/src/pubkey/ecdsa/ecdsa.h b/src/pubkey/ecdsa/ecdsa.h
new file mode 100644
index 000000000..2f8392a3f
--- /dev/null
+++ b/src/pubkey/ecdsa/ecdsa.h
@@ -0,0 +1,100 @@
+/*************************************************
+* ECDSA Header File                              *
+* (C) 2007 Falko Strenzke, FlexSecure GmbH       *
+* Defines classes ECDSA_Signature  and           *
+* ECDSA_Signature_De/Encoder,                    *
+*************************************************/
+
+#ifndef BOTAN_ECDSA_H__
+#define BOTAN_ECDSA_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
diff --git a/src/pubkey/ecdsa/info.txt b/src/pubkey/ecdsa/info.txt
new file mode 100644
index 000000000..699c62214
--- /dev/null
+++ b/src/pubkey/ecdsa/info.txt
@@ -0,0 +1,23 @@
+realname "ECDSA/ECKAEG"
+
+define ECDSA
+
+load_on auto
+
+<add>
+ec.cpp
+ec.h
+ecc_core.cpp
+ecc_core.h
+ecdsa.cpp
+ecdsa.h
+</add>
+
+<requires>
+asn1
+bigint
+ec_dompar
+numbertheory
+gfpmath
+pubkey
+</requires>