@misc{cryptoeprint:2007:409,
    author = {Thomas Shrimpton and Martijn Stam},
    title = {Building a Collision-Resistant Compression Function from Non-Compressing Primitives},
    howpublished = {Cryptology ePrint Archive, Report 2007/409},
    year = {2007},
    url = {http://eprint.iacr.org/2007/409},
}