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diff --git a/comm/third_party/botan/src/lib/pubkey/eckcdsa/eckcdsa.h b/comm/third_party/botan/src/lib/pubkey/eckcdsa/eckcdsa.h
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+/*
+* ECKCDSA (ISO/IEC 14888-3:2006/Cor.2:2009)
+* (C) 2016 René Korthaus, Sirrix AG
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_ECKCDSA_KEY_H_
+#define BOTAN_ECKCDSA_KEY_H_
+
+#include <botan/ecc_key.h>
+
+namespace Botan {
+
+/**
+* This class represents ECKCDSA public keys.
+*/
+class BOTAN_PUBLIC_API(2,0) ECKCDSA_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
+      */
+      ECKCDSA_PublicKey(const EC_Group& dom_par,
+                      const PointGFp& public_point) :
+         EC_PublicKey(dom_par, public_point) {}
+
+      /**
+      * Load a public key.
+      * @param alg_id the X.509 algorithm identifier
+      * @param key_bits DER encoded public key bits
+      */
+      ECKCDSA_PublicKey(const AlgorithmIdentifier& alg_id,
+                      const std::vector<uint8_t>& key_bits) :
+         EC_PublicKey(alg_id, key_bits) {}
+
+      /**
+      * Get this keys algorithm name.
+      * @result this keys algorithm name ("ECGDSA")
+      */
+      std::string algo_name() const override { return "ECKCDSA"; }
+
+      size_t message_parts() const override { return 2; }
+
+      size_t message_part_size() const override
+         { return domain().get_order().bytes(); }
+
+      std::unique_ptr<PK_Ops::Verification>
+         create_verification_op(const std::string& params,
+                                const std::string& provider) const override;
+   protected:
+      ECKCDSA_PublicKey() = default;
+   };
+
+/**
+* This class represents ECKCDSA private keys.
+*/
+class BOTAN_PUBLIC_API(2,0) ECKCDSA_PrivateKey final : public ECKCDSA_PublicKey,
+                                    public EC_PrivateKey
+   {
+   public:
+
+      /**
+      * Load a private key.
+      * @param alg_id the X.509 algorithm identifier
+      * @param key_bits ECPrivateKey bits
+      */
+      ECKCDSA_PrivateKey(const AlgorithmIdentifier& alg_id,
+                       const secure_vector<uint8_t>& key_bits) :
+         EC_PrivateKey(alg_id, key_bits, true) {}
+
+      /**
+      * Create a private key.
+      * @param rng a random number generator
+      * @param domain parameters to used for this key
+      * @param x the private key (if zero, generate a new random key)
+      */
+      ECKCDSA_PrivateKey(RandomNumberGenerator& rng,
+                       const EC_Group& domain,
+                       const BigInt& x = 0) :
+         EC_PrivateKey(rng, domain, x, true) {}
+
+      bool check_key(RandomNumberGenerator& rng, bool) const override;
+
+      std::unique_ptr<PK_Ops::Signature>
+         create_signature_op(RandomNumberGenerator& rng,
+                             const std::string& params,
+                             const std::string& provider) const override;
+   };
+
+}
+
+#endif