AES192 & AES256 in CBC mode [libgcrypt]

Jan Bilek jan.bilek at
Fri Nov 28 02:10:20 CET 2014


I've just bounced in a potential problem with libgcrypt while trying to 
do AES192 & AES256 in CBC mode.

All works well with AES128 for all cipher modes, however when moving to 
AES192 & AES256 and GCRY_CIPHER_MODE_CBC it looks like all buffers are 
being written just in first 128 bits of output.

Please see example code attached.

Let me know if you'll be able to confirm that and if confirmed if I may 
help with fixing it.

Thank you & Kind Regards,

Jan Bilek
CTO, EFTlab Pty Ltd
email:jan.bilek at
mob:   +61 (0) 498 103 179

This message contains confidential information and is intended only for 
the addressee(s). E-mail transmission cannot be guaranteed to be secure 
or error-free as information could be intercepted, corrupted, lost, 
destroyed, arrive late or incomplete, or contain viruses. EFTlab Ltd 
cannot accept liability for any errors or omissions in the contents of 
this message, which may arise as a result of e-mail transmission. Please 
note that EFTlab Ltd may monitor, analyse and archive email traffic, 
data and the content of email for the purposes of security, legal 
compliance and staff training. If you have received this email in error 
please notify us at support at EFTlab is a limited company 
registered in England & Wales with Reg No. 07528943. The Registered 
Office is 21-27 Lamb's Conduit Street, London, WC1N 3GS.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: </pipermail/attachments/20141128/d05e5bf1/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: crypto_aes.cpp
Type: text/x-c++src
Size: 6065 bytes
Desc: not available
URL: </pipermail/attachments/20141128/d05e5bf1/attachment.cpp>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: CryptoAes_unittest.cpp
Type: text/x-c++src
Size: 10065 bytes
Desc: not available
URL: </pipermail/attachments/20141128/d05e5bf1/attachment-0001.cpp>

More information about the Gcrypt-devel mailing list