This tool lets you encode and decode secret messages
using a cipher that automatically changes every hour.
That means your messages are safe from reuse attacks and stay fresh each time.
How it works β°
Every hour, the tool generates a new cipher sequence.
The sequence is based on the current time and your shared key.
Both you and your friend must use the same key and the same hour for decoding to work.
If you try to decode with the wrong key or at a different hour, the message wonβt make sense.
How to use & Tips π
1οΈβ£ Enter a shared key.
2οΈβ£ Choose Encode or Decode.
3οΈβ£ Select the language: English or Korean.
4οΈβ£ Type or paste your message.
5οΈβ£ Copy and share the result; your friend pastes it back with the same key & hour.
π‘ Messages change every hour β warn your friend if near the hour mark.
π‘ Spaces are preserved after decoding.
π‘ Use the Paste and Copy buttons for quick input and sharing.