Hi, XTS template does not seems updating the IV after request completion. Same output if we run belwo command in loop [root@heptagon test]# ./kcapi -x 1 -d 4 -s -e -c "xts(aes)" -i 7fbc02ebf5b93322329df9bfccb635af -k 8d7dd9b0170ce0b5f2f8e1aa768e01e91da8bfc67fd486d081b28254c99eb423 -p `perl -e 'print "e" x 32'` 4ea328cd5b10d0cb3bbc7ab92d54072d 4ea328cd5b10d0cb3bbc7ab92d54072d 4ea328cd5b10d0cb3bbc7ab92d54072d 4ea328cd5b10d0cb3bbc7ab92d54072d Is IV update not required for XTS as we did for cbc,ctr mode. Regards Harsh Jain