%% You should probably cite rfc6955 instead of this I-D.
@techreport{schaad-pkix-rfc2875-bis-08,
    number =    {draft-schaad-pkix-rfc2875-bis-08},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-schaad-pkix-rfc2875-bis/08/},
    author =    {Jim Schaad and Hemma Prafullchandra},
    title =     {{Diffie-Hellman Proof-of-Possession Algorithms}},
    pagetotal = 43,
    year =      2013,
    month =     mar,
    day =       27,
    abstract =  {This document describes two methods for producing an integrity check value from a Diffie-Hellman key pair and one method for producing an integrity check value from an Elliptic Curve key pair. This behavior is needed for such operations as creating the signature of a Public-Key Cryptography Standards (PKCS) \#10 Certification Request. These algorithms are designed to provide a Proof-of-Possession of the private key and not to be a general purpose signing algorithm. This document obsoletes RFC 2875.},
}