copied from Reddit No, when properly implemented, it can not be broken. "Properly implemented" pretty much implies a paper version where there are only two cop

copied from Reddit No, when properly implemented, it can not be broken. "Properly implemented" pretty much implies a paper version where there are only two copies of any pad page, and both are immediately destroyed after use. Computerized versions share the same vulnerabilities as the computer it is on. It can't be "cracked", per se, but there are side-channel attacks that can be effective. Here is a paper by Dirk Rijmenants which explains it in the context of Cuban spy communications: http://users.telenet.be/d.rijmenants/papers/cuban_agent_communications.pdf http://users.telenet.be/d.rijmenants/papers/cuban_agent_comm... I've experimented with generating them manually, using 10-sided dice to generate the code groups and an old manual typewriter (not electric!) with a very used cloth ribbon and 2 part carbonless forms. Works pretty well, and once you get into a rhythm you can make a considerable amount of key material. I just grabbed some random 10-sided die at the local gaming store, but if you were serious about it, I'd get Game Science 10-sided die: http://www.gamesciencedice.com/Gamescience-White--d10--Ten-sided-die--Plain-_p_53.html http://www.gamesciencedice.com/Gamescience-White--d10--Ten-s...