Journal :   International Journal of Technology

Volume No. :   4

Issue No. :  1

Year :  2014

Pages :   252-256

ISSN Print :  2231-3907

ISSN Online :  2231-3915


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Modified Hill Cipher Using Vandermonde Matrix and Finite Field

Address:   P. L. Sharma, M. Rehan
Department of Mathematics, Himachal Pradesh University, Summer Hill, Shimla - 171005, India
*Corresponding Author

Cryptography is the science which provides confidentiality, authenticity and integrity to the users over the prevailing insecure communication channels. Encryption is the transformation of data into some unreadable form. The purpose is to ensure privacy by keeping the information hidden from anyone for whom it is not intended, even those who can see the encrypted data. Decryption is the reverse of encryption; it is the transformation of encrypted data back into some intelligible form. Encryption and decryption require the use of some secret information, usually referred to as a key. Hill cipher in cryptography is a symmetric key substitution algorithm, which is vulnerable to known plaintext attack. We modify the existing Hill cipher by using Vandermonde matrix and introducing the elements of finite field which provides more security to the said cipher.
Plain Text; Symmetric Key; Hill Cipher; Finite Field; Vandermonde Matrix. MSC: 11T71, 94A60, 68P25.
P. L. Sharma, M. Rehan. Modified Hill Cipher Using Vandermonde Matrix and Finite Field. Int. J. Tech. 4(1): Jan.-June. 2014; Page 252-256
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