Symmetric Encryption

Encryption is the process of transforming any plain-text into cipher text, which cannot be read by an unauthorized user. Decryption is the process of transforming the cipher text back to its original form. Both encryption and decryption use a "key" to transform data.
In general, there are two types of encryption: symmetric and asymmetric. In symmetric encryption both the encoder and the decipherer use the same key.
Read more in the article "Securing Electronic Commerce".

Encrypt/decipher a message: hands-on

Symmetric Encryption Demo

1. The encryption’s secret key:
2. Write a message to encrypt (up to 50 characters):

3. Decrypt the following string: