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Format Preserving Encryption for Small Domain
The paper presents a method for encrypting small arbitrary length data while preserving its length and data type through a flexible arbitrary length small domain block cipher (FPESD) based on the AES algorithm. It emphasizes the importance of cryptography in securing vulnerable information and utilizes Galois finite field GF(2^8) and format preserving keys for implementation. The proposed approach enables the resulting ciphertext to remain consistent with the input plaintext, allowing for straightforward decryption.
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Format Preserving Encryption for Small Domain
- 1. International Journal ofComputing Algorithm, Vol 4(1), June 2015 ISSN(Print):2278-2397 Website: www.ijcoa.com Format Preserving Encryption for Small Domain S.Vidhya1 , K.Chitra2 1 Research Scholar, Department of Computer Science and Applications, SCSVMV University, Kancheepuram, Tamilnadu, India. 2 Assistant Professor, Department of Computer science, Govt. Arts college, Melur, Madurai E-mail: vidhyarajmca@gmail.com, manikandan.chitra@gmail.com Abstract 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.