Secret Text Encoder - Encode and Decode with Password

Encode and decode secret text with a password online. Send secret messages with a secret word. For private messages with your close friends.

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Frequently Asked Questions

Here are the answers to the questions we get asked the most. If you don't see your question, want more info, or have feedback, please reach out to us.

How does secret text encoding work?

Secret text encoding uses key derivation and a pseudo-random key stream to encrypt your text with a secret word. The cipher generates a unique encryption key from your password using a hash function and linear congruential generator, making it much harder to guess. Base64 encoding makes the encrypted text safe for transmission. Only someone with the exact secret word can decode the message.

Is secret text encoding secure?

Secret text encoding provides basic obfuscation but is not cryptographically secure. It's suitable for hiding casual messages or adding a layer of privacy to text, but should not be used for sensitive data.

What happens if I use the wrong secret word to decode?

If you use the wrong secret word to decode, you'll get completely garbled text. The cipher uses key derivation, so even a slightly different password (like '1234' vs '1235') produces entirely different encryption keys, resulting in unreadable output. You must use the exact same secret word for both encoding and decoding.

Can I encode long messages with this tool?

Yes, you can encode text of any length using this secret text encoder. The tool processes your entire message character by character, applying the secret word repeatedly as needed. Longer messages will result in longer encoded output.

Is my secret text processed on the server?

No, all encoding and decoding happens entirely in your browser using JavaScript. Your text and secret word never leave your device, ensuring complete privacy. This client-side processing makes the tool safe for encoding sensitive messages.

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