AES Decryption Tool
Decrypt AES encrypted text with support for multiple modes and key sizes. Free online AES decryption tool with client-side processing.
Configuration
Input (Ciphertext, Base64)
What is AES Decryption?
AES Decryption reverses the encryption process to recover original plaintext from AES-encrypted ciphertext using the same key and parameters that were used for encryption.
How to Use AES Decryption
When to Use AES Decryption
How AES Decryption Works
The tool performs the inverse of AES encryption operations. It requires the correct key, initialization vector (IV), mode, and padding scheme that were used during encryption to successfully recover the original data.
Common Use Cases
- Decrypt encrypted files
- Recover encrypted data
- Verify encryption/decryption
- Development and testing
FAQs
1 Why does decryption fail?
Common reasons include incorrect key, wrong IV, mismatched mode or padding, or corrupted ciphertext. Ensure all parameters match those used for encryption.
2 Can I decrypt without the key?
No, AES is designed to be secure. Without the correct key, decryption is computationally infeasible.