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학술대회 Performance Analysis of Format-Preserving Encryption Based on UnbalancedFeistel Structure
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저자
김건우, 장구영
발행일
201512
출처
International Conference on Ubiquitous Information Technologies and Applications (CUTE) 2015 (LNEE 373), pp.425-430
출판사
한국정보처리학회
DOI
https://dx.doi.org/10.1007/978-981-10-0281-6_61
협약과제
15ZS1500, 암호화된 데이터베이스에서의 데이터 저장 및 검색을 위한 암호 원천 기술 개발, 장구영
초록
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.
키워드
BPS, FFX, Format-preserving encryption, FPE, Unbalanced-feistel, VAES3
KSP 제안 키워드
Credit card numbers(CCN), Feistel structure, Format-preserving encryption, Performance analysis, Three unbalanced, block cIPher, modes of operation