12th IEEE International Conference on Application-Specific Systems, Architectures and Processors (ASAP'00)
Bit Permutation Instructions for Accelerating Software Cryptography
Boston, Massachusetts
July 10-July 12
ISBN: 0-7695-0716-6
Permutation is widely used in cryptographic algorithms. However, it is not well supported in existing instruction sets. In this paper, two instructions, PPERM3R and GRP, are proposed for efficient software implementation of arbitrary permutations. The PPERM3R instruction can be used for dynamically specified permutations; the GRP instruction can be used to do arbitrary n-bit permutations with up to lg(n) instructions. In addition, a systematic method for determining the instruction sequence for performing an arbitrary permutation is described.
Index Terms:
permutations, Instruction Set Architecture, processor architecture, bit-level instructions, cryptography, security
Citation:
Zhijie Shi, Ruby B. Lee, "Bit Permutation Instructions for Accelerating Software Cryptography," asap, pp.138, 12th IEEE International Conference on Application-Specific Systems, Architectures and Processors (ASAP'00), 2000