0 McGregor, John Patrick Lee, Ruby B. 2003 Architectural Techniques for Accelerating Subword Permutations with Repetitions IEEE Transactions on Very Large Scale Integration Systems 11 3 325-335 June 2003 Cryptography, encryption, instruction set architecture, permutation, permutation instruction, processor architecture, subword parallelism, subword permutation http://palms.ee.princeton.edu/PALMSopen/mcgregor03architectural.pdf