Ironically, One Time Pad is breakable in practice, due to mistakes made, shortcuts taken[0] and side-channel attacks[1].
Besides, it relies on securely distributing the pad itself before information exchange can take place, which in turn is prone to the usual array of physical insecurity, design errors (e.g. using publicly available randomness), or, if distributed by a digital channel, to failures of the encryption used.
Besides, it relies on securely distributing the pad itself before information exchange can take place, which in turn is prone to the usual array of physical insecurity, design errors (e.g. using publicly available randomness), or, if distributed by a digital channel, to failures of the encryption used.
[0] http://en.wikipedia.org/wiki/Venona_project [1] http://en.wikipedia.org/wiki/Operation_Gold