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Performing permutations in software can facilitate more widespread use of secure information processing and faster multimedia processing. But current instruction set architectures, even when augmented with subword-parallel multimedia instructions, do not provide efficient, bit-level software permutations. Four new instructions each offer a solution.
Ruby B. Lee, Zhijie Shi, Xiao Yang, "Cryptography Efficient Permutation Instructions for Fast Software", IEEE Micro, vol. 21, no. , pp. 56-69, November/December 2001, doi:10.1109/40.977759
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