Porthop points out this "interesting developer.com story regarding the security of open source software, in regards to theories that many eyes looking at the source will alleviate security problems." It ain't necessarily so, emphasis on necessarily. Last week it was discovered that, in some (uncommon) cases, a really stupid brainfart bug makes PGP5 key generation not very random. The bug lived for a year in open-source code before being found. If you generated a key pair non-interactively with PGP5 on a unix machine, don't panic and read carefully; you may want to invalidate your key. Update, next day: several people have pointed out that although PGP5's code is available (crypto requires code review), it can't be used for any product without permission. Incentive for code review is therefore less than for other projects of its importance, and I really shouldn't have called PGP "open-source." Mea culpa.
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