AES-256-GCM Encrypt & Decrypt Tool

AES-256-GCM Encryption & Decryption Tool

This tool uses AES-256-GCM, a modern and highly secure encryption standard used in APIs, cloud systems, and secure applications. It provides both encryption and authentication in a single process.

What is AES-GCM?

AES-GCM (Galois/Counter Mode) is an advanced encryption mode that provides confidentiality and integrity. Unlike CBC, it also detects tampering automatically.

It is widely used in modern systems like HTTPS, secure APIs, and cloud security services.

How It Works

• Encrypt – Converts text into secure Base64 output
• Decrypt – Restores original text using the same key
• Secret Key – Required for both operations
• IV (Initialization Vector) – Randomized for every encryption

Why GCM is Better

• Built-in authentication (detects tampering)
• No padding vulnerabilities
• Faster than CBC in modern systems
• Recommended by security standards

Important Note

AES-GCM is symmetric encryption. The same key is required for encryption and decryption. If the key is lost, data cannot be recovered.

Conclusion

AES-256-GCM is the modern replacement for older encryption modes like CBC. It is faster, safer, and widely used in production systems today.