AES-GCM 256-bit Encryption Sandbox
Military-grade authenticated encryption using browser Web Crypto API with PBKDF2 key derivation and Base64 output.
AES-GCM 256-bit Encryption Sandbox
Military-grade client-side authenticated encryption using browser Web Crypto API
How to Use AES-GCM 256-bit Encryption Sandbox
1. Enter Plaintext & Secret Passphrase
Type or paste the confidential text you want to secure, and enter a strong encryption password.
2. Client-Side AES-GCM 256-Bit Encryption
The W3C Web Cryptography API generates a random cryptographic salt and IV, encrypting data 100% locally.
3. Copy Ciphertext Payload
Copy the encrypted Base64 payload safely for transmission over email or insecure messaging channels.
How This Utility Works
End-to-end client-side encryption utility utilizing native browser Web Crypto subtle.encrypt. Employs AES-GCM 256-bit authenticated cipher mode, PBKDF2 key derivation (100,000 iterations of SHA-256), random 96-bit initialization vectors (IV), and 128-bit authentication tags.
Hashing and cipher transformations run entirely via the standard W3C Web Cryptography API in volatile RAM. Secrets and keys never touch a cloud endpoint.
Frequently Asked Questions
Can anyone decrypt this data without the password?
No. AES-256 with Galois/Counter Mode is mathematically unbreakable against known practical attacks without the secret passphrase.
AES-256-CBC Encrypt & Decrypt via OpenSSL
Run directly in your terminal without installing external heavy dependencies
$ openssl enc -aes-256-cbc -salt -pbkdf2 -in secret.txt -out secret.encEncrypts file using AES-256 in CBC mode with modern PBKDF2 key derivation and random salt.
$ openssl enc -d -aes-256-cbc -pbkdf2 -in secret.enc -out decrypted.txtDecrypts the ciphertext file back to original plaintext using the same passphrase.
Cryptographic Hashing & Encryption Standards
| Algorithm | Output Size | Security Level | Primary Application |
|---|---|---|---|
| SHA-256 | 256 bits (64 hex chars) | NIST Approved / Highly Secure | Digital signatures, Bitcoin, TLS certificates |
| SHA-512 | 512 bits (128 hex chars) | High Security / 64-bit Optimized | High-security checksums, Unix password hashes |
| Keccak-256 | 256 bits (64 hex chars) | Ethereum Standard | Ethereum smart contracts, address generation |
| AES-GCM | 128/256-bit symmetric key | Military-Grade Authenticated Cipher | Secure data storage, confidential communications |
| BIP-39 | 12–24 Mnemonic Words | CSPRNG Entropy Standard | Deterministic cryptocurrency wallet seeds |