Poul-Henning Kamp

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Poul-Henning Kamp
PH Kamp.jpg
Poul-Henning Kamp with Tux.
Born (1966-01-20) 20 January 1966 (age 48)
Residence Slagelse, Denmark
Nationality Danish
Other names phk
Occupation Programmer
Employer Self-employed

Poul-Henning Kamp (born 1966) is a Danish computer developer known for work on various projects. He currently resides in Slagelse, Denmark.

Involvement in the FreeBSD project[edit]

Poul-Henning Kamp has been committing[1] to the FreeBSD project for most of its duration. He is responsible for the widely used MD5crypt implementation of the MD5 password hash algorithm,[2][3] a vast quantity of systems code including the FreeBSD GEOM storage layer, GBDE cryptographic storage transform, part of the UFS2 file system implementation, FreeBSD Jails, malloc library, and the NTP timecounters code.

The Varnish cache project[edit]

He is the lead architect and developer for the open source Varnish cache project, an HTTP accelerator.

Dispute with D-Link[edit]

His dispute with electronics manufacturer D-Link in which he claimed they were committing NTP vandalism by embedding the IP address of his NTP servers in their routers was resolved on 27 April 2006.[4][5]

Other[edit]

A post by Poul-Henning[6] is responsible for the widespread use of the term bikeshed colour to describe contentious but otherwise meaningless technical debates over trivialities in open source projects. This term is in use in, among others, the FreeBSD Project, the Perl Project, and the Subversion Project.

Poul-Henning Kamp is known for his preference of a Beerware license to the GNU GPL.[7]

Publications[edit]

Poul-Henning Kamp has published a substantial number of articles over the years in publications like Communications of the ACM and ACM Queue mostly on the topics of computing and time keeping. A selection of publications:

References[edit]

External links[edit]