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Two new algorithms that facilitate the implementation of RSA in software are described. Both algorithms are essentially concerned with performing modular arithmetic operations on very large numbers, which could be of potential use to applications other than RSA. One algorithm performs modular reduction and the other performs modular multiplication. Both algorithms are based on the use of look-up tables to enable the arithmetic computations to be done on a byte by byte basis.
Computers and Digital Techniques, IEE Proceedings E (Volume:136 , Issue: 3 )
Date of Publication: May 1989