fixup! chore: move aead to separate file

Author: aduh95

include/ncrypto.h

@@ -1760,137 +1760,6 @@ class KEM final {
 
 #endif  // OPENSSL_VERSION_MAJOR >= 3
 
-// ============================================================================
-// AEAD (Authenticated Encryption with Associated Data)
-// Note that the underlying EVP_AEAD interface is specific to BoringSSL. AEAD
-// primitives are accessed through the Cipher class instead, if using OpenSSL.
-
-#ifdef OPENSSL_IS_BORINGSSL
-class Aead final : public ModeMixin<Aead> {
- private:
-  // BoringSSL does not keep a list of AEADs, so we need to maintain our own.
-  struct AeadInfo {
-    std::string name;
-    int mode;
-    int nid = 0;  // Note: BoringSSL only defines NIDs for some AEADs
-  };
-
- public:
-  Aead() = default;
-  Aead(const AeadInfo* info, const EVP_AEAD* aead) : info_(info), aead_(aead) {}
-  Aead(const Aead&) = default;
-  Aead& operator=(const Aead&) = default;
-  NCRYPTO_DISALLOW_MOVE(Aead)
-
-  inline const EVP_AEAD* get() const { return aead_; }
-  inline operator const EVP_AEAD*() const { return aead_; }
-  inline operator bool() const { return aead_ != nullptr; }
-
-  int getMode() const;
-  int getNonceLength() const;
-  int getKeyLength() const;
-  int getBlockSize() const;
-  int getMaxOverhead() const;
-  int getMaxTagLength() const;
-  std::string_view getName() const;
-
-  static const Aead FromName(std::string_view name);
-
-  // TODO(npaun): BoringSSL does not define NIDs for all AEADs.
-  // This method is included only for implementing getCipherInfo and can't be
-  // used to construct an Aead instance.
-  int getNid() const;
-  // static const AEAD FromNid(int nid);
-
-  static const Aead FromCtx(std::string_view name, const AeadCtxPointer& ctx);
-
-  using AeadNameCallback = std::function<void(std::string_view name)>;
-
-  // Iterates the known ciphers if the underlying implementation
-  // is able to do so.
-  static void ForEach(AeadNameCallback callback);
-
-  // Utilities to get various AEADs by type.
-
-  static const Aead EMPTY;
-  static const Aead AES_128_GCM;
-  static const Aead AES_192_GCM;
-  static const Aead AES_256_GCM;
-  static const Aead CHACHA20_POLY1305;
-  static const Aead XCHACHA20_POLY1305;
-  static const Aead AES_128_CTR_HMAC_SHA256;
-  static const Aead AES_256_CTR_HMAC_SHA256;
-  static const Aead AES_128_GCM_SIV;
-  static const Aead AES_256_GCM_SIV;
-  static const Aead AES_128_GCM_RANDNONCE;
-  static const Aead AES_256_GCM_RANDNONCE;
-  static const Aead AES_128_CCM_BLUETOOTH;
-  static const Aead AES_128_CCM_BLUETOOTH_8;
-  static const Aead AES_128_CCM_MATTER;
-  static const Aead AES_128_EAX;
-  static const Aead AES_256_EAX;
-
- private:
-  const EVP_AEAD* aead_ = nullptr;
-  const AeadInfo* info_ = nullptr;
-
-  using AeadConstructor = const EVP_AEAD* (*)();
-  static const std::unordered_map<AeadConstructor, AeadInfo> aeadIndex;
-  static const Aead FromConstructor(AeadConstructor construct);
-};
-
-class AeadCtxPointer final {
- public:
-  static AeadCtxPointer New(
-      const Aead& aead,
-      bool encrypt,
-      const unsigned char* key = nullptr,
-      size_t keyLen = 0,
-      size_t tagLen = EVP_AEAD_DEFAULT_TAG_LENGTH /* = 0 */);
-
-  AeadCtxPointer() = default;
-  explicit AeadCtxPointer(EVP_AEAD_CTX* ctx);
-  AeadCtxPointer(AeadCtxPointer&& other) noexcept;
-  AeadCtxPointer& operator=(AeadCtxPointer&& other) noexcept;
-  NCRYPTO_DISALLOW_COPY(AeadCtxPointer)
-  ~AeadCtxPointer();
-
-  inline bool operator==(std::nullptr_t) const noexcept {
-    return ctx_ == nullptr;
-  }
-  inline operator bool() const { return ctx_ != nullptr; }
-  inline EVP_AEAD_CTX* get() const { return ctx_.get(); }
-  inline operator EVP_AEAD_CTX*() const { return ctx_.get(); }
-  void reset(EVP_AEAD_CTX* ctx = nullptr);
-  EVP_AEAD_CTX* release();
-
-  bool init(const Aead& aead,
-            bool encrypt,
-            const unsigned char* key = nullptr,
-            size_t keyLen = 0,
-            size_t tagLen = EVP_AEAD_DEFAULT_TAG_LENGTH /* = 0 */);
-
-  // TODO(npaun): BoringSSL does not define NIDs for all AEADs.
-  // Decide if we will even implement this method.
-  // int getNid() const;
-
-  bool encrypt(const Buffer<const unsigned char>& in,
-               Buffer<unsigned char>& out,
-               Buffer<unsigned char>& tag,
-               const Buffer<const unsigned char>& nonce,
-               const Buffer<const unsigned char>& aad);
-
-  bool decrypt(const Buffer<const unsigned char>& in,
-               Buffer<unsigned char>& out,
-               const Buffer<const unsigned char>& tag,
-               const Buffer<const unsigned char>& nonce,
-               const Buffer<const unsigned char>& aad);
-
- private:
-  DeleteFnPtr<EVP_AEAD_CTX, EVP_AEAD_CTX_free> ctx_;
-};
-#endif
-
 // ============================================================================
 // Version metadata
 #define NCRYPTO_VERSION "0.0.1"