Encryption output buffer description in algif_aead.c file

Hi Stephan,

It seems now AEAD encryption operation also returns AAD to user space
in output buffer. Following comment in aead_recvmsg() needs updation:

/*
373          * AEAD memory structure: For encryption, the tag is appended to the
374          * ciphertext which implies that the memory allocated for
the ciphertext
375          * must be increased by the tag length. For decryption, the tag
376          * is expected to be concatenated to the ciphertext. The plaintext
377          * therefore has a memory size of the ciphertext minus the
tag length.
378          *
379          * The memory structure for cipher operation has the following
380          * structure:
381          *      AEAD encryption input:  assoc data || plaintext
382          *      AEAD encryption output: cipherntext || auth tag
383          *      AEAD decryption input:  assoc data || ciphertext || auth tag
384          *      AEAD decryption output: plaintext
385          */


Regards
Harsh Jain