Cryptanalysis of IAR-CTR and IAR-CFB and a fixing method
Abstract We present practical attacks on IAR-CTR and IAR-CFB, AE modes proposed by Hwang and Gope to offer both privacy and authenticity in a single pass. Then we use the idea of iCOFB, which is originally defined with a tweakable random function, to fix the IAR-CTR mode using the tweakable block cipher, and propose the TIAR-CTR mode, which is a one-pass AEAD mode with provable security. However, the same fixed method does not work for the IAR-CFB mode.
Authors
- Xueqi Zhu (ORCID: https://orcid.org/0009-0000-8788-5371)
- Jun Xu (ORCID: https://orcid.org/0000-0001-7170-111X)
- Peng Wang (ORCID: https://orcid.org/0000-0002-8003-4686)
- Fangzhou Liu (ORCID: https://orcid.org/0000-0001-5600-4017)
- Yan Jia (ORCID: https://orcid.org/0000-0003-0689-2508)
Institutions
- State Key Laboratory of Cryptology (CN)
- Institute of Information Engineering (CN)
- University of Chinese Academy of Sciences (CN)
Publication Details
- Journal
- Cybersecurity
- Published
- 2025-01-10
- DOI
- https://doi.org/10.1186/s42400-024-00312-x
- Primary Topic
- Cryptographic Implementations and Security
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- National Key Research and Development Program of China