OneTimer

Command-line C programs for doing encryption and decryption using the one-time pad (OTP).

It consists of three programs:

1. encrypt takes a key and a plaintext and returns a ciphertext:

> ./encrypt -k f00bd00b -p "Derp"  
b46ea27b

2. decrypt takes a key and a ciphertext and returns a plaintext:

> ./decrypt -k f00bd00b -c b46ea27b  
Derp

3. crack takes a plaintext and a ciphertext and returns a key:

> ./crack -p "Derp" -c b46ea27b  
f00bd00b

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Though the one-time pad has perfect secrecy, please don't use this for anything serious.