OTPGHOST / DIANA
LETTER-BY-LETTER CREATOR
Create a message.
Enter a U.S. ZIP code to fill the middle row with its city and state. Write your message above it; the cipher letters appear below.
Location phrase
Your message
Spaces and punctuation are omitted from the cipher.
Letter grid
You can also type or paste letters into the top row.
Plain textCity + stateCipher text
Cipher text
Your cipher letters will appear here.
Letters are grouped in tens for easy copying. The ZIP location phrase repeats throughout the message.
About the key: The city and state letters repeat for longer messages. Because ZIP locations are public and the phrase repeats, this is a DIANA-style message creator, not a secure one-time pad.