Some programming efforts can be casual, some can not. Cryptography is is one that often requires not just rigor, but also expensive investment. The combination

Some programming efforts can be casual, some can not. Cryptography is is one that often requires not just rigor, but also expensive investment. The combination can be an obstacle to open source inroads. I'm part of SpiderOak, and proud of their investment in Crypton. It is expensive - like, not just the coding, but sponsoring these audits - but, I believe, extremely valuable.