How to Use AES Encryption for Beginners

What is AES Encryption?

AES (Advanced Encryption Standard) is the most widely used symmetric encryption algorithm in the world. It's used by governments, banks, and tech companies to protect sensitive information.

As a beginner, the most important thing to know is that AES is symmetric, which means the same secret key or password is used for both encrypting and decrypting data.

Step 1: Choose Your AES Mode

There are different modes of AES encryption. For most people, we recommend using AES-GCM, as it provides both confidentiality and integrity:

• GCM – Best for general use (confidentiality + integrity
• CBC – Legacy mode (confidentiality only)

Step 2: Encrypt Your Text (5 Simple Steps

1. Go to the AES tool – Navigate to the AES encryption tool
2. Enter your plaintext – Type or paste the text you want to encrypt
3. Choose a strong password – Use something long and random for maximum security
4. Select AES-GCM mode – This is the default and recommended mode
5. Click encrypt – That's it! Your encrypted text (ciphertext) will appear

Step 3: Decrypt Your Text

Decrypting is just as easy:

1. Paste your ciphertext – Enter the encrypted text you want to decrypt
2. Enter the same password – You must use the exact same password you used for encryption
3. Select the same mode – Make sure you're using the same AES mode (GCM, CBC, etc.)
4. Click decrypt – Your original text will appear!

Step 4: Best Practices for Beginners

• Use long passwords – Longer is always better. Aim for 12+ characters
• Never reuse passwords – Use different passwords for different things
• Keep passwords offline – Store your passwords in a password manager
• Use GCM mode – It's the most secure for everyday use

Common Questions