AES-256-GCM Encryptor & Decryptor
Authenticated encryption and decryption using AES-256-GCM (Galois/Counter Mode) via the native Web Cryptography API. Total data privacy.
1 How to Use AES-256-GCM Encryptor & Decryptor
- 1. Enter plaintext and password.
- 2. WebCrypto derives a key and encrypts with a fresh 96-bit IV.
- 3. Copy ciphertext.
⚙️ Cryptographic Specifications
- Algorithm
- AES-GCM
- Execution Engine
- Web Cryptography API (SubtleCrypto)
- Environment
- Client Browser Sandbox
- Network Telemetry
- 0 Bytes (Zero Server Transmission)
🛡️ Security & Compliance
Enterprise developers can safely execute this tool with production secrets. Because execution takes place entirely within your browser's local V8 JavaScript runtime, no payloads are transmitted over HTTP, cached on third-party proxies, or stored in server logs.
Verified Safe for SOC2, HIPAA, and GDPR developer compliance audits.
Frequently Asked Questions
Why is GCM preferred over CBC?
GCM provides Authenticated Encryption with Associated Data (AEAD), preventing tampering and padding oracle attacks.
Related Cryptographic Tools
AES-128-GCM Encryptor & Decryptor
Encrypt and decrypt data using 128-bit AES-GCM via browser WebCrypto. Fast, authenticated symmetric encryption.
AES-256-CBC Encryptor & Decryptor
Encrypt and decrypt using AES-256-CBC (Cipher Block Chaining) with PKCS#7 padding and random initialization vectors in your browser.
ChaCha20-Poly1305 Encryptor
Encrypt data using ChaCha20-Poly1305 AEAD stream cipher. High-speed cipher used in WireGuard, TLS 1.3 and Android devices.