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diff --git a/comm/third_party/botan/src/lib/pubkey/ecdsa/ecdsa.h b/comm/third_party/botan/src/lib/pubkey/ecdsa/ecdsa.h
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+++ b/comm/third_party/botan/src/lib/pubkey/ecdsa/ecdsa.h
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+/*
+* ECDSA
+* (C) 2007 Falko Strenzke, FlexSecure GmbH
+*          Manuel Hartl, FlexSecure GmbH
+* (C) 2008-2010 Jack Lloyd
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_ECDSA_KEY_H_
+#define BOTAN_ECDSA_KEY_H_
+
+#include <botan/ecc_key.h>
+
+namespace Botan {
+
+/**
+* This class represents ECDSA Public Keys.
+*/
+class BOTAN_PUBLIC_API(2,0) ECDSA_PublicKey : public virtual EC_PublicKey
+   {
+   public:
+
+      /**
+      * Create 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(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
+      */
+      ECDSA_PublicKey(const AlgorithmIdentifier& alg_id,
+                      const std::vector<uint8_t>& key_bits) :
+         EC_PublicKey(alg_id, key_bits) {}
+
+      /**
+      * Recover a public key from a signature/msg pair
+      * See SEC section 4.6.1
+      * @param group the elliptic curve group
+      * @param msg the message
+      * @param r the r paramter of the signature
+      * @param s the s paramter of the signature
+      * @param v the recovery ID
+      */
+      ECDSA_PublicKey(const EC_Group& group,
+                      const std::vector<uint8_t>& msg,
+                      const BigInt& r,
+                      const BigInt& s,
+                      uint8_t v);
+
+      /**
+      * Get this keys algorithm name.
+      * @result this keys algorithm name ("ECDSA")
+      */
+      std::string algo_name() const override { return "ECDSA"; }
+
+      size_t message_parts() const override { return 2; }
+
+      size_t message_part_size() const override
+         { return domain().get_order().bytes(); }
+
+      uint8_t recovery_param(const std::vector<uint8_t>& msg,
+                             const BigInt& r,
+                             const BigInt& s) const;
+
+      std::unique_ptr<PK_Ops::Verification>
+         create_verification_op(const std::string& params,
+                                const std::string& provider) const override;
+   protected:
+      ECDSA_PublicKey() = default;
+   };
+
+/**
+* This class represents ECDSA Private Keys
+*/
+class BOTAN_PUBLIC_API(2,0) ECDSA_PrivateKey final : public ECDSA_PublicKey,
+                                   public EC_PrivateKey
+   {
+   public:
+
+      /**
+      * Load a private key
+      * @param alg_id the X.509 algorithm identifier
+      * @param key_bits ECPrivateKey bits
+      */
+      ECDSA_PrivateKey(const AlgorithmIdentifier& alg_id,
+                       const secure_vector<uint8_t>& key_bits) :
+         EC_PrivateKey(alg_id, key_bits) {}
+
+      /**
+      * 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)
+      */
+      ECDSA_PrivateKey(RandomNumberGenerator& rng,
+                       const EC_Group& domain,
+                       const BigInt& x = 0) :
+         EC_PrivateKey(rng, domain, x) {}
+
+      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