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This is an implementation of a MCMC based decryption algorithm for aristocrat cryptograms. The project was conducted as part of an MIT class. There were two parts to the project: a part where a breakpoint is allowed and a part where a breakpoint is not allowed (i.e. the key does not change). For this webapp, we only demonstrate the functionality of the latter. Some tips for how to use the tool:

• Spaces and periods are included in the encryption algorithm. No letter may encrypt to itself.
• The input ciphertext must be lowercase.
• The decryption algorithm may take up to a minute so be patient 😃