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Status:

INFORMATIONAL

Author:

S. Smyshlyaev, Ed.

Stream:

IRTF

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DOI:  https://doi.org/10.17487/RFC8645

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Abstract

A certain maximum amount of data can be safely encrypted whenencryption is performed under a single key. This amount is calledthe "key lifetime". This specification describes a variety ofmethods for increasing the lifetime of symmetric keys. It providestwo types of re-keying mechanisms based on hash functions and blockciphers that can be used with modes of operations such as CTR, GCM,CBC, CFB, and OMAC.

This document is a product of the Crypto Forum Research Group (CFRG)in the IRTF.

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.