Use Symmetric Key Encryption and Decryption

Symmetric key encryption allows for ciphertext to be encrypted and decrypted with the same key.

Generate a key with the default settings.

In[1]:=

key = GenerateSymmetricKey[]

Out[1]=

Encrypt a message using this key.

In[2]:=

encrypted = Encrypt[key, "I hid the gold on an island in the Caribbean."]

Out[2]=

Using the same key, decrypt the message.

In[3]:=

Decrypt[key, encrypted]

Out[3]=