@techreport{denis-ipcrypt-13,
    number =    {draft-denis-ipcrypt-13},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-denis-ipcrypt/13/},
    author =    {Frank Denis},
    title =     {{Methods for IP Address Encryption and Obfuscation}},
    pagetotal = 44,
    year =      2026,
    month =     mar,
    day =       15,
    abstract =  {This document specifies secure, efficient methods for encrypting IP addresses for privacy-preserving storage, logging, and analytics. Unlike truncation, which destroys data irreversibly, these methods are reversible with the encryption key while providing strong privacy guarantees. Four modes are defined: ipcrypt-deterministic (format-preserving, IP- address output), ipcrypt-pfx (prefix-preserving, native address size), ipcrypt-nd and ipcrypt-ndx (non-deterministic with random tweaks). All support high-performance processing at network speeds and produce interoperable results across implementations.},
}