Welcome to the Cypher

STEP 1 - Reorder the cards below to match the card sequence. (The sequence constantly changes - keep an eye out!)

STEP 2 - Paste the coded challenge into the CHALLENGE Cypher Text box and click ‘Decrypt’.

Now you can see the new challenge/riddle in the Plaintext box. (Note - it is coded with no punctuation).

STEP 3 - Type your answer into the RESPONSE Plaintext box and click ‘Encrypt’. (Avoid using punctuation).

STEP 4 - Copy your encoded answer from the Cyphertext box and send it to me.

Drag and Drop Playing Card Grid

Challenge

  1. Put the encrypted text into the Cyphertext field.

  2. Click the Decrypt button.

  3. The decrypted text appears in the Plaintext field.

Cyphertext:
Plaintext:

Response

(optional) Type your User PIN into the field marked User PIN below:

Plaintext:
Cyphertext:
User PIN:

 

The Nazo Nazo cypher implements a cryptographic system based on the "Solitaire-Pontifex" cryptographic system described in the novel "Cryptonomicon" by Neal Stephenson. The Solitaire-Pontifex cypher and the Nazo Nazo cypher use a single deck of playing cards to encrypt and decrypt messages. Paul Schneier invented the Solitaire-Pontifex cryptographic system for use in the "Cryptonomicon" novel. You can find a description of the algorithm in an Appendix of "Cryptonomicon" novel, or on Paul Schneier's web site at this URL link which also has links to translations of the description in various languages.