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Published in:   Vol. 4 Issue 1 Date of Publication:   June 2015

Format Preserving Encryption for Small Domain

K.Chitra,S.Vidhya

Page(s):   49-53 ISSN:   2278-2397
DOI:   10.20894/IJCOA.101.004.001.012 Publisher:   Integrated Intelligent Research (IIR)

Cryptography is important in communicating secured information that is vulnerable to distortion. The main goal of this paper is encrypting the small arbitrary length data without any changes in the length and data type. We propose a flexible arbitrary length small domain block cipher (FPESD). FPESD is based on AES Algorithm. The resulting cipher text is the same as input plaintext. Here, we use Galois finite field GF (28) and format preserving key to implement FPE. For decryption format preserving key is used along with cipher text and secret key.