1 files changed, 143 insertions, 0 deletions
diff --git a/src/libs/3rdparty/botan/src/lib/mac/mac.h b/src/libs/3rdparty/botan/src/lib/mac/mac.h
new file mode 100644
index 0000000000..de30b7dbb2
--- /dev/null
+++ b/src/libs/3rdparty/botan/src/lib/mac/mac.h
@@ -0,0 +1,143 @@
+/*
+* Base class for message authentiction codes
+* (C) 1999-2007 Jack Lloyd
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_MESSAGE_AUTH_CODE_BASE_H_
+#define BOTAN_MESSAGE_AUTH_CODE_BASE_H_
+
+#include <botan/buf_comp.h>
+#include <botan/sym_algo.h>
+#include <string>
+#include <memory>
+
+namespace Botan {
+
+/**
+* This class represents Message Authentication Code (MAC) objects.
+*/
+class BOTAN_PUBLIC_API(2,0) MessageAuthenticationCode : public Buffered_Computation,
+                                            public SymmetricAlgorithm
+   {
+   public:
+      /**
+      * Create an instance based on a name
+      * If provider is empty then best available is chosen.
+      * @param algo_spec algorithm name
+      * @param provider provider implementation to use
+      * @return a null pointer if the algo/provider combination cannot be found
+      */
+      static std::unique_ptr<MessageAuthenticationCode>
+         create(const std::string& algo_spec,
+                const std::string& provider = "");
+
+      /*
+      * Create an instance based on a name
+      * If provider is empty then best available is chosen.
+      * @param algo_spec algorithm name
+      * @param provider provider implementation to use
+      * Throws a Lookup_Error if algo/provider combination cannot be found
+      */
+      static std::unique_ptr<MessageAuthenticationCode>
+         create_or_throw(const std::string& algo_spec,
+                         const std::string& provider = "");
+
+      /**
+      * @return list of available providers for this algorithm, empty if not available
+      */
+      static std::vector<std::string> providers(const std::string& algo_spec);
+
+      virtual ~MessageAuthenticationCode() = default;
+
+      /**
+      * Prepare for processing a message under the specified nonce
+      *
+      * Most MACs neither require nor support a nonce; for these algorithms
+      * calling `start_msg` is optional and calling it with anything other than
+      * an empty string is an error. One MAC which *requires* a per-message
+      * nonce be specified is GMAC.
+      *
+      * @param nonce the message nonce bytes
+      * @param nonce_len the size of len in bytes
+      * Default implementation simply rejects all non-empty nonces
+      * since most hash/MAC algorithms do not support randomization
+      */
+      virtual void start_msg(const uint8_t nonce[], size_t nonce_len);
+
+      /**
+      * Begin processing a message with a nonce
+      *
+      * @param nonce the per message nonce
+      */
+      template<typename Alloc>
+      void start(const std::vector<uint8_t, Alloc>& nonce)
+         {
+         start_msg(nonce.data(), nonce.size());
+         }
+
+      /**
+      * Begin processing a message.
+      * @param nonce the per message nonce
+      * @param nonce_len length of nonce
+      */
+      void start(const uint8_t nonce[], size_t nonce_len)
+         {
+         start_msg(nonce, nonce_len);
+         }
+
+      /**
+      * Begin processing a message.
+      */
+      void start()
+         {
+         return start_msg(nullptr, 0);
+         }
+
+      /**
+      * Verify a MAC.
+      * @param in the MAC to verify as a byte array
+      * @param length the length of param in
+      * @return true if the MAC is valid, false otherwise
+      */
+      virtual bool verify_mac(const uint8_t in[], size_t length);
+
+      /**
+      * Verify a MAC.
+      * @param in the MAC to verify as a byte array
+      * @return true if the MAC is valid, false otherwise
+      */
+      virtual bool verify_mac(const std::vector<uint8_t>& in)
+         {
+         return verify_mac(in.data(), in.size());
+         }
+
+      /**
+      * Verify a MAC.
+      * @param in the MAC to verify as a byte array
+      * @return true if the MAC is valid, false otherwise
+      */
+      virtual bool verify_mac(const secure_vector<uint8_t>& in)
+         {
+         return verify_mac(in.data(), in.size());
+         }
+
+      /**
+      * Get a new object representing the same algorithm as *this
+      */
+      virtual MessageAuthenticationCode* clone() const = 0;
+
+      /**
+      * @return provider information about this implementation. Default is "base",
+      * might also return "sse2", "avx2", "openssl", or some other arbitrary string.
+      */
+      virtual std::string provider() const { return "base"; }
+
+   };
+
+typedef MessageAuthenticationCode MAC;
+
+}
+
+#endif