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ashishpoudel995 / repository
The project aims to improve the serial execution of the DES cryptographic algorithm by implementing it parallelly using OpenMP in C++.
For the parallel Implementation of DES Algorithm, plain text is read from the plaintext.txt file and stored in a string. The string is divided into strings with length=8 each and stored in string array. Then, the divided strings stored in arrays are parallely encrypted and decrypted. Vectors are also used for making the process easy.
The ASCII value is taken into consideration and an alphabet corresponds to 8 bit binary when ASCII is taken into consideration.
S box is separately parallelized and the implementation code is available in Codes folder. S Box parallelism consumed more time than Technique 1. This might be due to thread overhead.
For Nested Parallelism, Technique 1 and 2 are combined. Nested Parallelism also consumed more time than technique 1. This also might be due to thread overhead.
The serial implementation of DES Algorithm is also done and the code is available in Codes folder of the repository.
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