Abstract
Format-Preserving Encryption (FPE) is used to produce a ciphertext with the same length and format as a plaintext. Some approaches to do that are a prefix cipher, a cycle walking, a feistel network and so on. In this paper, we present format-preserving encryption using the unbalanced-feistel structure. We apply our construction to FFX, VAES3 and BPS schemes, which are modes of operation for FPE. We also analyze the performance of three unbalanced-feistel FPE schemes over block ciphers. VAES3 using 128-bit AES encrypts credit card numbers at 5,924,000bps.
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References
Bellare, M., Rogaway, P., Spies, T.: The FFX Mode of Operation for Format-Preserving Encryption, Draft 1.1, NIST, February 2010
Bellare, M., Rogaway, P., Spies, T.: Addendum to “The FFX Mode of Operation for Format-Preserving Encryption”: A parameter collection for enciphering strings of arbitrary radix and length, Draft 1.0, NIST, September 2010
Vance, J.: VAES3 scheme for FFX: An addendum to “The FFX Mode of Operation for Format-Preserving Encryption”: A parameter collection for encipher strings of arbitrary radix with subkey operation to lengthen life of the enciphering key, Draft 1.0, NIST, May 2011
Brier, E., Peyrin, T., Stern, J.: BPS: a Format-Preserving Encryption Proposal
NIST Special Publication 800-38G Draft: Recommendation for Block Cipher Modes of Operation—Methods for Format-Preserving Encryption, July 2013
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© 2015 Springer Science+Business Media Singapore
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Kim, K., Chang, KY. (2015). Performance Analysis of Format-Preserving Encryption Based on Unbalanced-Feistel Structure. In: Park, DS., Chao, HC., Jeong, YS., Park, J. (eds) Advances in Computer Science and Ubiquitous Computing. Lecture Notes in Electrical Engineering, vol 373. Springer, Singapore. https://doi.org/10.1007/978-981-10-0281-6_61
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DOI: https://doi.org/10.1007/978-981-10-0281-6_61
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