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How to Use AES/DES Encrypt: Complete Guide (2026)
Learn how to use aes/des encrypt free online — no signup, no download. Follow our step-by-step guide below.
What is AES/DES Encrypt?
Encrypt and decrypt text or files using AES (Advanced Encryption Standard) and DES (Data Encryption Standard) algorithms. Supports multiple key sizes and modes (ECB, CBC). All processing happens in your browser — no data is sent to our servers.
- 100% browser-based — no data uploaded to servers
- Free to use — no signup required
- Instant results — no waiting
- Works on all devices — mobile, tablet, desktop
How to Use AES/DES Encrypt: Step-by-Step
- 1
Paste or type text
Enter the text you want to encrypt in the input box.
- 2
Choose algorithm & mode
Select AES or DES, then pick a mode (ECB / CBC). AES supports 128/192/256-bit keys.
- 3
Set a secret key
Enter a passphrase. For AES-256, use a 32+ character key for maximum security.
- 4
Encrypt / Decrypt
Click the button. The result appears instantly and can be copied or downloaded.
Common Use Cases
Secure messaging
Encrypt sensitive text before sending over email or chat.
Password storage
Encrypt passwords locally before storing them in a file.
Learning & teaching
Experiment with classical encryption algorithms to understand how they work.
FAQ About AES/DES Encrypt
Is AES-256 secure?
Yes. AES-256 is considered military-grade and is widely used by governments and financial institutions worldwide.
What is the difference between ECB and CBC?
ECB (Electronic Codebook) encrypts identical blocks identically — it leaks patterns. CBC (Cipher Block Chaining) XORs each block with the previous one, making it much more secure.
Does this tool store my data?
No. All encryption and decryption happens entirely in your browser. Nothing is uploaded to any server.
Ready to Try AES/DES Encrypt?
No signup. No download. 100% free.