@misc{rfc8645,
    series =    {Request for Comments},
    number =    8645,
    howpublished =  {RFC 8645},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC8645},
    url =       {https://www.rfc-editor.org/info/rfc8645},
    author =    {Stanislav V. Smyshlyaev},
    title =     {{Re-keying Mechanisms for Symmetric Keys}},
    pagetotal = 69,
    year =      2019,
    month =     aug,
    abstract =  {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.},
}