CyberDefinitions.com
menu

Send an Encrypted Message

Send and Receive Encrypted Messages

homesitemaplocal encryption
Ready to get sneaky? Use this tool to send highly encrypted messages on WhatsApp and other messaging apps.

Enter Your Secret "Crypto" Word


This word is required to encrypt and decrypt the message. You and the message receiver must know it. It can be any word, phrase, or string of characters.

Encrypt Your Message


Decrypt Your Message

Enter the secret crypto word above, then enter your encrypted message.

Message Encryption Tool

send encrypted message spy head

This tool allows you to encrypt and decrypt messages. Once you have your encrypted text, you can send it to your contact using WhatsApp (or any messaging, social-media, or email app). If someone finds your encrypted message, they will only be able to decrypt it if they know your secret "Crypto" word," and they know about this page. Below is an explanation of how the encryption works. Do not worry though. Knowing how it works is no help to someone who wants to decrypt it, unless they have a state-level supercomputer and a lot of time to spare.

encrypt a message

This tool currently does not support emojis. If you want us to add that feature, let us know using the "Help Us Improve" contact form below.

How Does This Encryption Work?

This 5-minute video shows how the encryption is performed. As you will see, your message is extremely safe!

Summary of the Encryption Method

This encryption method:
  • (1) Converts each character to a decimal number (its ASCII code).
  • (2) Converts each number to a hexadecimal number.
  • (3) Converts each number (not letter) in the hexadecimal to a letter.
  • (4) Places the text horizontally in a table whose size is determined by your secret word.
  • (5) Regathers the text vertically from the table in an order determined by your secret word.
  • (6) Inserts random padding letters to further obfuscate.

Every run of the encryption and decryption offers a specific explanation, but, if you watch the video, you'll understand why your message is still secure.

How Secure Is This Message?

We provide an explanation of how every message is encoded. This, however, does not mean that the message is insecure. It is, in fact, extremely secure.

If a person who wanted to decode this message did not understand the mechanics of the encoding, they would have zero chance of decoding your message. If, however, the decoder did understand the encoding-decoding system, then they would still have extreme difficulty with decoding a message. Before they could start decoding, they would need to know the secret word's length and the order of its columns (or the secret word itself). There are no clues in the encrypted message to the secret word's length or the order of its columns.

Also, the decrypted message is not stored anywhere. So, there is no history to check. There are no deleted files to recover. Once the message has been read, the decrypted message is gone forever. As a worst-case scenario, it will exist in its encrypted form in whatever application you used to send it.

You might also like...

Help Us Improve Cyber Definitions

  • Do you disagree with something on this page?
  • Did you spot a typo?
  • Do you know a slang term that we've missed?
Please tell us using this form.

Share This Page

share icon

If you like Cyber Definitions (or this page in particular), please link to it or share it with others.

If you do, please tell us. It helps us a lot!

Create a QR Code

create QR code

Use our handy widget to create a QR code for this page...or any page.