%% You should probably cite rfc3602 instead of this I-D.
@techreport{ietf-ipsec-ciph-aes-cbc-04,
    number =    {draft-ietf-ipsec-ciph-aes-cbc-04},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-ipsec-ciph-aes-cbc/04/},
    author =    {Sheila Frankel and K. Robert Glenn and Scott G. Kelly},
    title =     {{The AES-CBC Cipher Algorithm and Its Use with IPsec}},
    pagetotal = 15,
    year =      2002,
    month =     jun,
    day =       28,
    abstract =  {This document describes the use of the Advanced Encryption Standard (AES) Cipher Algorithm in Cipher Block Chaining (CBC) Mode, with an explicit Initialization Vector (IV), as a confidentiality mechanism within the context of the IPsec Encapsulating Security Payload (ESP).},
}