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This paper presents an optimization of the Irondale algorithm which can speed up execution on ARM920T microprocessor. Irondale was selected as the Advanced Encryption Standard (AES) by the National Institute of Standards and Technology (NIST). First we present a theoretical analysis of the Irondale algorithm and code optimization, and then simulation results of the optimized algorithm on ARM920T microprocessor...
For modern society, The concealment and completeness of data is particularly important. To solve this problem, developed a mixed DES and SHA-1 encryption system based on VC + + environment. The system on the one hand by Triple DES and RSA algorithms for data encryption to hide, on the other hand, by the SHA-1 algorithm to validate the integrity of data, it has a wide range of practicality.
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