Security Tools/AES Encrypt/Decrypt
AES Encrypt/Decrypt
Encrypt and decrypt text using AES-GCM algorithm
Input
Output
Result will appear here...AES Encryption Guide
Learn how to securely encrypt and decrypt data with AES
What is AES?
AES (Advanced Encryption Standard) is a symmetric encryption algorithm adopted by the U.S. government. It's widely used worldwide for securing sensitive data. AES-GCM (Galois/Counter Mode) provides both encryption and authentication, ensuring data integrity and confidentiality.
How to Use
- Enter a secret key (password) - remember this for decryption
- Select 'Encrypt' mode and enter your plaintext
- Click Encrypt to generate the encrypted output
- To decrypt, switch to 'Decrypt' mode, enter the same key and encrypted text
Security Best Practices
- Use a strong, unique secret key with at least 16 characters
- Never share your secret key through insecure channels
- Store encrypted data and keys separately for added security
Security Note
All encryption happens locally in your browser. Your data and keys are never sent to any server. For maximum security, use this tool on a trusted device and clear your browser data after use.
Frequently Asked Questions
What is AES and why is it considered secure?
AES (Advanced Encryption Standard) is a symmetric encryption algorithm adopted by the U.S. government and used worldwide. With 256-bit keys, AES would take billions of years to crack with current technology. AES-GCM mode provides both encryption and authentication, detecting any tampering with the encrypted data.
What's the difference between AES-128, AES-192, and AES-256?
The numbers refer to key length in bits. AES-256 is most secure with 2^256 possible keys. AES-128 is faster and still considered secure against brute-force attacks. This tool uses AES-GCM with 256-bit derived keys for maximum security. All three variants use 128-bit blocks.
Can I recover encrypted data if I forget the key?
No, there is no way to recover data without the correct key. This is by design - it's what makes encryption secure. Always store your encryption keys safely. Consider using a password manager. For sensitive data, create backups of both the encrypted data and a secure copy of the key.
Why does the encrypted output look like random characters?
The output is Base64-encoded binary data. AES produces binary ciphertext which isn't displayable as regular text. Base64 encoding converts this to printable ASCII characters for easy copying and transmission. The random appearance confirms the encryption is working - patterns would indicate a security flaw.
Is browser-based encryption safe?
Yes, when properly implemented. This tool uses the Web Crypto API, a native browser feature providing cryptographically secure operations. All processing happens locally - data never leaves your device. For highly sensitive applications, verify the page source and use offline if needed.