RFC 8645 PDF

  • Version
  • Download 0
  • File Size 162.74 KB
  • File Count 1
  • Create Date 30.08.2019
  • Last Updated 30.08.2019

RFC 8645 PDF

Re-keying Mechanisms for Symmetric Keys


A certain maximum amount of data can be safely encrypted when encryption is performed under a single key. This amount is called the "key lifetime". This specification describes a variety of methods for increasing the lifetime of symmetric keys. It provides two types of re-keying mechanisms based on hash functions and block ciphers 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.