Integrity-protecting block cipher modes -- Untangling a tangled web

arXiv:2403.03654v1 Announce Type: new
Abstract: This paper re-examines the security of three related block cipher modes of operation designed to provide authenticated encryption. These modes, known as PES-PCBC, IOBC and EPBC, were all proposed in the mid-1990s. However, analyses of security of the latter two modes were published more recently. In each case one or more papers describing security issues with the schemes were eventually published, although a flaw in one of these analyses (of EPBC) was subsequently discovered - …

1990s arxiv block cipher cs.cr encryption integrity protecting security web