Paper 2025/547
Improved Cryptanalysis of FEA-1 and FEA-2 using Square Attacks
Abstract
This paper presents a security analysis of the South Korean Format-Preserving Encryption (FPE) standards FEA-1 and FEA-2. In 2023, Chauhan \textit{et al.} presented the first third-party analysis of FEA-1 and FEA-2 against the square attack. The authors proposed new distinguishing attacks covering up to three rounds of FEA-1 and five rounds of FEA-2, with a data complexity of
Metadata
- Available format(s)
-
PDF
- Category
- Attacks and cryptanalysis
- Publication info
- Preprint.
- Keywords
- Format Preserving EncryptionFEA-1FEA-2Square attackRound Function
- Contact author(s)
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abhishek kumar iitrpr @ gmail com
akcindia macs @ gmail com
somitra @ iitj ac in - History
- 2025-03-25: approved
- 2025-03-25: received
- See all versions
- Short URL
- https://ia.cr/2025/547
- License
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CC BY
BibTeX
@misc{cryptoeprint:2025/547, author = {Abhishek Kumar and Amit Kumar Chauhan and Somitra Kumar Sanadhya}, title = {Improved Cryptanalysis of {FEA}-1 and {FEA}-2 using Square Attacks}, howpublished = {Cryptology {ePrint} Archive, Paper 2025/547}, year = {2025}, url = {https://eprint.iacr.org/2025/547} }