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  • License: Freeware
  • Last update: 5 years ago
  • Total downloads: 281
  • Price: Free |
  • Operating system: Linux
  • Publisher: Karl Fogel
See full specifications

linux default iconOTP Publisher's description

OTP is an encryption program that uses the one-time pad algorithm to allow two parties to communicate securely.

OTP is an encryption program that uses the one-time pad algorithm to allow two parties to communicate securely, without worrying about unauthorized people listening in. OTP compresses plaintext input to save pad, has features that assist with the bureaucracy of pad management, and comes with built-in help. OTP project is written in the Python programming language and requires a Python interpreter to run.

To use OTP reliably, you need a source of good random data. On modern Unix systems, the /dev/random device is probably good enough (I haven't done the math myself, I'm just taking other people's word for it). On non-Unix systems, you're on your own. Whatever your source of random data, store the data in a file (that's the "pad") and point to it using OTP's -p option when you encrypt; the recipient must use the same pad to decrypt, of course.

Note that the one-time pad method depends completely on the quality of the pad data; if the pad is not truly random, the security of your messages cannot be guaranteed. Never encrypt different plaintexts with the same stretch of pad ??пїЅ doing so could reveal some or all of the used pad to eavesdroppers. OTP's default behavior is to always avoid reusing pad data, unless you explicitly tell it otherwise.

System Requirements:

No special requirements.
Program Release Status: Minor Update
Program Install Support: Install and Uninstall

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