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Basic diagram of block cipher encryption - I drew it, and release it into the public domain

This work has been released into the public domain by its author, Lunkwill. This applies worldwide. In some countries this may not be legally possible; if so: Lunkwill grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

en:vi:Hình:Encryption.png

It appears the same diagram is used in Alberto Grand's 'Block Cipher Modes of Operation and the CMAC Mode for Authentication'. It seems he has taken your work.