diff --git a/cryptlib.h b/cryptlib.h
index 2cb49c92..adf2c7fc 100644
--- a/cryptlib.h
+++ b/cryptlib.h
@@ -1125,10 +1125,23 @@ protected:
const Algorithm & GetAlgorithm() const {return *this;}
};
-//! \brief Interface for one direction (encryption or decryption) of a stream cipher or block cipher mode with authentication
-//! \details The StreamTransformation part of this interface is used to encrypt/decrypt the data, and the
-//! MessageAuthenticationCode part of this interface is used to input additional authenticated data (AAD,
-//! which is MAC'ed but not encrypted), and to generate/verify the MAC.
+//! \class AuthenticatedSymmetricCipher
+//! \brief Interface for authenticated encryption modes of operation
+//! \details AuthenticatedSymmetricCipher() provides the interface for one direction
+//! (encryption or decryption) of a stream cipher or block cipher mode with authentication. The
+//! StreamTransformation() part of this interface is used to encrypt or decrypt the data. The
+//! MessageAuthenticationCode() part of the interface is used to input additional authenticated
+//! data (AAD), which is MAC'ed but not encrypted. The MessageAuthenticationCode() part is also
+//! used to generate and verify the MAC.
+//! \details Crypto++ provides four authenticated encryption modes of operation - CCM, EAX, GCM
+//! and OCB mode. All modes implement AuthenticatedSymmetricCipher() and the motivation for
+//! the API, like calling AAD a "header", can be found in Bellare, Rogaway and
+//! Wagner's The EAX Mode of
+//! Operation. The EAX paper suggested a basic API to help standardize AEAD schemes in
+//! software and promote adoption of the modes.
+//! \sa Authenticated
+//! Encryption on the Crypto++ wiki.
+//! \since Crypto++ 5.6.0
class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE AuthenticatedSymmetricCipher : public MessageAuthenticationCode, public StreamTransformation
{
public: