Image Encryption using Simplified Data Encryption Standard (S-DES)
نویسندگان
چکیده
منابع مشابه
The Data Encryption Standard (DES)
The Data Encryption Standard (DES) [31] has been around for more than 25 years. DES was an outcome of a call for primitives in 1974 which didn’t result in many serious candidates except for a predecessor of DES, Lucifer [15, 35] designed by IBM around 1971. It took another year for a joint IBM–NSA effort to turn Lucifer into DES. The structure of Lucifer was significantly altered and since the ...
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Table 6: The best orders of the S-boxes (p = 2 ?48). 6 Appendix This appendix describes 136 orders of DES S-boxes for which the maximal probability of two-round iterative characteristics is as in DES or smaller. Table 6 describes the orders whose best characteristics have probability 2 ?48 , which is lower than the best characteristic of DES. Table 7 describes the orders whose best characterist...
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Status of This Memo This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. Abstract The Data Encryption Standard (DES) is susceptible to brute-force attacks, which are well within the reach of a modestly financed adversary. As a result, DES has been deprecated, and replaced by the Advanced Encrypti...
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Encryption algorithms are known to be computational intensive. Internet and networks applications growing very fast, so the needs to protect. Encryption plays the very important role in information security system. On the other side, the symmetric key algorithms consume a significant amount of computed resources such as speed, time, memory and cost. The symmetrical algorithms AES and DES as a s...
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This paper presents hardware implementation of the data encryption and decryption of the DES standard algorithm. The design consists of the S-Box circuit Exclusive-OR circuit, Circular Left Shift circuit and the control unit. The S-Box circuit implemented using 32 PLDs (Programmable Logic Device) chip that hold substitution a 48-bits input data and yields a 32-bits output data. The other circui...
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ژورنال
عنوان ژورنال: International Journal of Computer Applications
سال: 2014
ISSN: 0975-8887
DOI: 10.5120/18178-9070