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2. ARM, 32-bit RISC microprocessors,
http://www.arm.com/products/CPUs/
3. Atmel, AVR 8-Bit RISC,
http://www.atmel.com/products/AVR/
4. Biham, E., Shamir, A.: Differential Cryptanalysis of the Data Encryption Standard. Springer, Heidelberg (1993)
5. Biham, E.: New types of cryptanalytic attacks using related keys. Journal of Cryptology 7(4), 229–246 (1994)