%% You should probably cite draft-irtf-cfrg-ristretto255 instead of this I-D.
@techreport{hdevalence-cfrg-ristretto-01,
    number =    {draft-hdevalence-cfrg-ristretto-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-hdevalence-cfrg-ristretto/01/},
    author =    {Henry de Valence and Jack Grigg and George Tankersley and Filippo Valsorda and Isis Lovecruft},
    title =     {{The ristretto255 Group}},
    pagetotal = 16,
    year =      2019,
    month =     may,
    day =       8,
    abstract =  {This memo specifies a prime-order group, ristretto255, suitable for implementing complex cryptographic protocols such as zero-knowledge proofs. The ristretto255 group can be implemented using Curve25519, allowing existing Curve25519 implementations to be reused and extended to provide a prime-order group.},
}