CW
Netswimmer
Although there are many tutorials on how to set up OpenBSD disk encryption, there is only limited information on the encryption itself (design, algorithms, etc.). Historically, OpenBSD used vnd(4) disk to implement that feature. Currently, the use of softraid(4) is recommended.
This post will review the design of the current implementation.
http://xn--thibaud-dya.fr/openbsd_softraid.html