On Internal Re-keying

Autor:	Liliya R. Akhmetzyanova, Evgeny Konstantinovich Alekseev, Stanislav Vital'evich Smyshlyaev, Igor B. Oshkin
Rok vydání:	2020
Předmět:	Block cipher mode of operation Provable security Stream processing Theoretical computer science Symmetric-key algorithm business.industry Computer science Key (cryptography) The Internet business Encryption Block cipher
Zdroj:	Security Standardisation Research ISBN: 9783030643560 SSR
Popis:	In this paper we introduce a classification of existing re-keying-based approaches to increase the security of block cipher operation modes. We introduce the concepts of external and internal re-keying putting the focus on the second one. Whereas the external re-keying approach is widely used and provides the mechanism of key usage control on a message stream processing level, the internal re-keying approach is the first known mechanism providing such a control on a single message processing level. These approaches can be applied completely independently. The internal re-keying approach was already applied to the \(\mathrm {\text {CTR}}\) encryption mode and yielded the \(\text {CTR-ACPKM}\) mode. The mode is a part of RFC 8645 “Re-keying Mechanisms for Symmetric Keys”, which represents the consensus of the Crypto Forum Research Group (CFRG) of the Internet Research Task Force (IRTF).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::21d995abfd95d9b4df5d79e9ac205644 https://doi.org/10.1007/978-3-030-64357-7_2 Zobrazit plný text záznamu