AES Encrypt / Decrypt Online
AES加密AES解密CBCGCM
WebCrypto-based AES tool supporting CBC, CTR and GCM modes with 16/24/32-char keys, auto random IV or manual input, Base64 ciphertext, fully local.
Key
Mode
Initialization Vector (IV)
Encrypt
Decrypt
All processing is done locally in your browser, no upload
How to Use
- Paste any valid JSON, supports nesting, arrays and escapes
- Click Beautify to auto indent and format
- Click Minify to remove whitespace into one line
- All operations run locally for privacy
Related Tools
FAQ
Which mode should I choose?
GCM offers authenticated encryption and is safest; CTR suits streaming data; CBC has the best compatibility. Encryption and decryption must use the same mode and IV.
Key requirements?
Exactly 16, 24 or 32 characters for AES-128/192/256; use the identical key for both directions.
Will my data be uploaded?
No, all operations run locally in your browser.