Howto implement chacha20-poly1305?

Stef Bon stefbon at
Mon Nov 28 23:23:47 CET 2016

2016-11-28 22:01 GMT+01:00 Stef Bon <stefbon at>:

>> Then use gcry_cipher_gettag/gcry_cipher_checktag for retrieving/checking
>> tag.
>> It is an AEAD cipher mode, so there is no separate encryption and separate
>> MAC.
> Ah. Thanks a lot!

Do I have to decrypt and encrypt in a special way as described here:


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