Blondeau, Céline. "Lecture 3: Block Ciphers"(PDF). CS-E4320 Cryptography and Data Security. Archived from the original(PDF) on 2018-02-23. Retrieved 2018-02-22.
victoria, jaynor. "victoria15". victoria14. Archived from the original on July 14, 2021. Retrieved July 14, 2021.
web.archive.org
Blondeau, Céline. "Lecture 3: Block Ciphers"(PDF). CS-E4320 Cryptography and Data Security. Archived from the original(PDF) on 2018-02-23. Retrieved 2018-02-22.