XOR Encryption Cracker

This is a tool for breaking the encryption of messages that have been XOR encrypted using a repeated key. This method uses statistics (letter frequencies and use of common words, bigrams, and trigrams), so the cipher-text needs to be a decent size otherwise it won’t work. For an in-depth explanation of how this works, please read my post here.

Input Mode

HEX
Base64
UTF-8

Input

Minimum Key Length (in Bytes)

Maximum Key Length (in Bytes)

Decryption Options

Attempt only the 5 most likely key length
Attempt all key lengths (this will take longer)

Known Plaintext

Add any known strings that occur in the Plaintext (1 per line). A big bonus will be given if these strings are observed.

Decryption Result

(See console for progress & additional results)