Kwasi Baah Gyam, Kwame Owusu Bempah

Abstract: The Hill cipher algorithm only encrypts messages in the form of document and can only decrypts the same message provided the matrix used as key is non-singular. In this paper, we propose an algorithm for decryption of documents to be possible for both singular and non -singular matrices as invo- lutary key alongside giving practical examples by using two by two and three by three involutary keys for singular and non singular matrices to illustrate our result when encrypting and decrypting documents.

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Kwasi Baah Gyam, Kwame Owusu Bempah (2020); Comparison of a Proposed Algorithm and Hill cipher Algorithm in Cryptography; International Journal of Scientific and Research Publications (IJSRP) 10(12) (ISSN: 2250-3153), DOI: http://dx.doi.org/10.29322/IJSRP.10.12.2020.p10837