About AES-GCM 256-Bit Text Encryptor & Decryptor
Protect sensitive text messages with authenticated military-grade encryption. Uses the Web Crypto API to derive 256-bit AES keys via PBKDF2 (100,000 rounds), generates unique 12-byte IVs, and executes client-side AES-GCM encryption and decryption.
Key Capabilities & Features
- Authenticated AES-GCM 256-bit symmetric encryption
- Key derivation via PBKDF2 (100,000 iterations, SHA-256)
- Cryptographic 12-byte random IV and 16-byte random salt
- Portable Base64 encoded ciphertext output
- Authentication tag verification on decryption
How to Use AES-GCM 256-Bit Text Encryptor & Decryptor
1
Choose Mode
Select Encrypt or Decrypt.
2
Enter Text & Password
Provide message and secret encryption passphrase.
3
Process
Generate Base64 ciphertext or decrypt secret message.
Privacy & In-Browser Execution Guarantee
Keys and plaintext execute strictly in local browser RAM and are never transmitted.
Frequently Asked Questions
Why is AES-GCM preferred over AES-CBC?
AES-GCM (Galois/Counter Mode) provides both data confidentiality and cryptographic authentication (integrity), protecting against ciphertext tampering attacks.
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