1 files changed, 229 insertions, 0 deletions
diff --git a/src/lib/prov/pkcs11/p11_ecc_key.h b/src/lib/prov/pkcs11/p11_ecc_key.h
new file mode 100644
index 000000000..a32a78339
--- /dev/null
+++ b/src/lib/prov/pkcs11/p11_ecc_key.h
@@ -0,0 +1,229 @@
+/*
+* PKCS#11 ECC
+* (C) 2016 Daniel Neus, Sirrix AG
+* (C) 2016 Philipp Weber, Sirrix AG
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_P11_ECC_H__
+#define BOTAN_P11_ECC_H__
+
+#include <botan/build.h>
+#if defined(BOTAN_HAS_ECC_PUBLIC_KEY_CRYPTO)
+
+#include <botan/p11_object.h>
+#include <botan/pk_keys.h>
+#include <botan/ecc_key.h>
+#include <botan/ec_group.h>
+#include <botan/rng.h>
+#include <botan/alg_id.h>
+
+#include <vector>
+
+namespace Botan {
+namespace PKCS11 {
+
+class Session;
+
+/// Properties for generating a PKCS#11 EC public key
+class BOTAN_DLL EC_PublicKeyGenerationProperties final : public PublicKeyProperties
+   {
+   public:
+      /// @param ec_params DER-encoding of an ANSI X9.62 Parameters value
+      EC_PublicKeyGenerationProperties(const std::vector<byte>& ec_params);
+
+      /// @return the DER-encoding of the ec parameters according to ANSI X9.62
+      inline const std::vector<byte>& ec_params() const
+         {
+         return m_ec_params;
+         }
+
+   private:
+      const std::vector<byte> m_ec_params;
+   };
+
+/// Properties for importing a PKCS#11 EC public key
+class BOTAN_DLL EC_PublicKeyImportProperties final : public PublicKeyProperties
+   {
+   public:
+      /**
+      * @param ec_params DER-encoding of an ANSI X9.62 Parameters value
+      * @param ec_point DER-encoding of ANSI X9.62 ECPoint value Q
+      */
+      EC_PublicKeyImportProperties(const std::vector<byte>& ec_params, const std::vector<byte>& ec_point);
+
+      /// @return the DER-encoding of the ec parameters according to ANSI X9.62
+      inline const std::vector<byte>& ec_params() const
+         {
+         return m_ec_params;
+         }
+
+      /// @return the DER-encoding of the ec public point according to ANSI X9.62
+      inline const std::vector<byte>& ec_point() const
+         {
+         return m_ec_point;
+         }
+
+   private:
+      const std::vector<byte> m_ec_params;
+      const std::vector<byte> m_ec_point;
+   };
+
+/// Represents a PKCS#11 EC public key
+class BOTAN_DLL PKCS11_EC_PublicKey : public virtual EC_PublicKey,
+   public Object
+   {
+   public:
+      static const ObjectClass Class = ObjectClass::PublicKey;
+
+      /**
+      * Creates a PKCS11_EC_PublicKey object from an existing PKCS#11 EC public key
+      * @param session the session to use
+      * @param handle the handle of the ecc public key
+      */
+      PKCS11_EC_PublicKey(Session& session, ObjectHandle handle);
+
+      /**
+      * Imports an EC public key
+      * @param session the session to use
+      * @param props the attributes of the public key
+      */
+      PKCS11_EC_PublicKey(Session& session, const EC_PublicKeyImportProperties& props);
+
+      size_t max_input_bits() const override;
+   };
+
+/// Properties for generating a PKCS#11 EC private key
+class BOTAN_DLL EC_PrivateKeyGenerationProperties final : public PrivateKeyProperties
+   {
+   public:
+      EC_PrivateKeyGenerationProperties()
+         : PrivateKeyProperties(KeyType::Ec)
+         {}
+   };
+
+/// Properties for importing a PKCS#11 EC private key
+class BOTAN_DLL EC_PrivateKeyImportProperties final : public PrivateKeyProperties
+   {
+   public:
+      /**
+      * @param ec_params DER-encoding of an ANSI X9.62 Parameters value
+      * @param value ANSI X9.62 private value d
+      */
+      EC_PrivateKeyImportProperties(const std::vector<byte>& ec_params, const BigInt& value);
+
+      /// @return the DER-encoding of the ec parameters according to ANSI X9.62
+      inline const std::vector<byte>& ec_params() const
+         {
+         return m_ec_params;
+         }
+
+      /// @return the value of the ec private key
+      inline const BigInt& value() const
+         {
+         return m_value;
+         }
+
+   private:
+      const std::vector<byte> m_ec_params;
+      const BigInt m_value;
+   };
+
+// note: don't inherit from PKCS11_EC_PublicKey: a private key object IS NOT A public key object on a smartcard (-> two different objects)
+// note: don't inherit from EC_PublicKey: the public key can not be extracted from a PKCS11-EC-PrivateKey (its only attributes are CKA_EC_PARAMS and CKA_VALUE)
+/// Represents a PKCS#11 EC private key
+class BOTAN_DLL PKCS11_EC_PrivateKey : public virtual Private_Key,
+   public Object
+   {
+   public:
+      static const ObjectClass Class = ObjectClass::PrivateKey;
+
+      /**
+      * Creates a PKCS11_EC_PrivateKey object from an existing PKCS#11 EC private key
+      * @param session the session to use
+      * @param handle the handle of the EC private key
+      */
+      PKCS11_EC_PrivateKey(Session& session, ObjectHandle handle);
+
+      /**
+      * Imports an EC private key
+      * @param session the session to use
+      * @param props the attributes of the private key
+      */
+      PKCS11_EC_PrivateKey(Session& session, const EC_PrivateKeyImportProperties& props);
+
+      /**
+      * Generates a PKCS#11 EC private key
+      * @param session the session to use
+      * @param ec_params DER-encoding of an ANSI X9.62 Parameters value
+      * @param props the attributes of the private key
+      * @note no persistent public key object will be created
+      */
+      PKCS11_EC_PrivateKey(Session& session, const std::vector<byte>& ec_params,
+                           const EC_PrivateKeyGenerationProperties& props);
+
+      /// @returns the domain of the EC private key
+      inline const EC_Group& domain() const
+         {
+         return m_domain_params;
+         }
+
+      /**
+      * Sets the associated public point of this private key
+      * @param point the public point
+      * @param point_encoding encoding of the point (default DER-encoded)
+      */
+      void set_public_point(const PointGFp& point, PublicPointEncoding point_encoding = PublicPointEncoding::Der)
+         {
+         m_public_key = point;
+         m_point_encoding = point_encoding;
+         }
+
+      /**
+      * Gets the public_point
+      * @note: the public key must be set using `set_public_point`
+      *        because it is not possible to infer the public key from a PKCS#11 EC private key
+      * @return the public point of the private key
+      * @throws Exception if the public point was not set using set_public_point()
+      */
+
+      const PointGFp& public_point() const
+         {
+         if(m_public_key.is_zero())
+            {
+            throw Exception("Public point not set. Inferring the public key from a PKCS#11 ec private key is not possible.");
+            }
+         return m_public_key;
+         }
+
+      /// @return the encoding format for the public point when it is passed to cryptoki functions as an argument
+      PublicPointEncoding point_encoding() const
+         {
+         return m_point_encoding;
+         }
+
+      // Private_Key methods
+
+      std::size_t max_input_bits() const override;
+
+      std::vector<byte> x509_subject_public_key() const override;
+
+      std::size_t estimated_strength() const override;
+
+      bool check_key(RandomNumberGenerator&, bool) const override;
+
+      AlgorithmIdentifier algorithm_identifier() const override;
+
+   private:
+      EC_Group m_domain_params;
+      PointGFp m_public_key;
+      PublicPointEncoding m_point_encoding;
+   };
+}
+
+}
+
+#endif
+
+#endif