INT-RUP analysis of block-cipher based authenticated encryption schemes
Document Type
Conference Article
Publication Title
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Abstract
Authenticated encryption (AE) is a mechanism to provide privacy as well as integrity of a plaintext. In the decryption phase of an AE scheme, the plaintext corresponding to a ciphertext is released if the tag is verified. As AE can be implemented in low end devices like smart cards, one may be forced to release plaintext before verification. Andreeva et al. address the issue of releasing unverified plaintext and formalize it by the notion called INT-RUP. In this paper, we consider “rate-1” block-cipher based affine authenticated encryption mode and show a generic INT-RUP attack on this mode. Using this attack idea, we also present an INT-RUP attack on CPFB (rate3/4).Thenwepresent a variant of CPFB, called mCPFB (rate3/4) which achieves INT-RUP security.
First Page
39
Last Page
54
DOI
10.1007/978-3-319-29485-8_3
Publication Date
1-1-2016
Recommended Citation
Chakraborti, Avik; Datta, Nilanjan; and Nandi, Mridul, "INT-RUP analysis of block-cipher based authenticated encryption schemes" (2016). Conference Articles. 732.
https://digitalcommons.isical.ac.in/conf-articles/732
