Ti
TiBox
100% On-Device / SafePure Client-Side
AES-256-GCM AEAD Engine•100% In-Browser RAM Execution
PBKDF2 HMAC-SHA256 (100k Iterations)
NIST SP 800-38D Standard
Secret Type:
KDF Work Factor (PBKDF2 Rounds):Higher iterations exponentially increase brute-force resistance against GPU clusters.
Tool Guide & FAQsHelp & Information
Jump to:AboutHow It WorksPrivacy & SecurityFAQs (5)
About this Tool

About AES-256-GCM Vault Encryptor

In modern cryptographic engineering, encryption without authentication is fundamentally broken. For decades, legacy systems relied on unauthenticated block cipher modes such as Electronic Codebook (ECB) and Cipher Block Chaining (CBC). While these modes provide confidentiality by obscuring plaintext, they do not verify data integrity or authenticity. As demonstrated by famous cryptographic vulnerabilities—most notably Vaudenay's Padding Oracle attacks, bit-flipping exploits, and POODLE—an active adversary capable of intercepting and subtly altering ciphertext bytes can systematically decrypt confidential payloads or execute arbitrary code without ever knowing the master key.

To permanently eradicate this architectural vulnerability, modern cryptography standardized Authenticated Encryption with Associated Data (AEAD). The gold standard of AEAD is Advanced Encryption Standard in Galois/Counter Mode (AES-GCM), standardized by NIST under Special Publication 800-38D and adopted universally across TLS 1.3, WireGuard VPN, IPsec, and Google Cloud and Apple hardware security enclaves. AES-256-GCM integrates high-speed symmetric encryption (via CTR counter mode) with an unforgeable 128-bit message authentication tag computed over the Galois field GF(2^128).

However, many developers and privacy-conscious users needing to encrypt sensitive credentials, API keys, recovery seeds, or confidential documents resort to online "AES tools" hosted on untrusted servers. Uploading plaintext secrets to an external server completely invalidates the security model. The TiBox Zero-Knowledge AES-256-GCM Vault solves this problem: leveraging the W3C Web Cryptography API (crypto.subtle), all key derivation (PBKDF2 with 100,000 iterations), initialization vector generation, and AES-GCM encryption/decryption take place strictly in your local device's memory. No plaintext, passphrase, or ciphertext ever touches a network socket.

How It Works

Simple, Fast & Secure In-Browser Workflow

STEP 01

CSPRNG Salt & Nonce Generation

When you initiate encryption, window.crypto.getRandomValues() generates a 128-bit cryptographically secure random salt and a 96-bit unique Initialization Vector (IV) directly from OS kernel entropy.

STEP 02

PBKDF2 Key Derivation in Hardware

The master passphrase and salt are imported into SubtleCrypto. The browser executes 100,000 rounds of HMAC-SHA256 to stretch the password into a non-extractable 256-bit CryptoKey object.

STEP 03

Galois/Counter Mode (AES-GCM) Cipher

SubtleCrypto encrypts your plaintext using hardware-accelerated AES-NI CPU instructions, concurrently calculating the 128-bit GHASH authentication tag in Galois field GF(2^128).

STEP 04

Zero-Knowledge JSON Bundle Formatting

The salt, IV, ciphertext, and authentication tag are packed into an armored, standardized JSON bundle. The secret key is immediately discarded from memory without lingering in browser state.

Privacy & Data Protection

Your Data Never Leaves Your Device

TiBox AES-256-GCM Vault operates in full compliance with NIST SP 800-38D and RFC 8018. All operations execute strictly within local workstation memory (RAM). The application creates zero network sockets, registers zero service workers for data harvesting, and implements zero persistent local storage of keys. Upon tab closure, all plaintext buffers, keys, and memory references are immediately garbage-collected by the browser engine.

✓ 100% Client-Side Processing✓ Zero Server Uploads✓ No Tracking Cookies or Analytics✓ RAM-Only Execution
Frequently Asked Questions (5)

Frequently Asked Questions about AES-256-GCM Vault Encryptor

What happens if someone tampers with just a single character of the encrypted text?▼

The AES-GCM engine will immediately detect the tampering and fail decryption with an unrecoverable OperationError. Because the 128-bit authentication tag is mathematically bound to every bit of the ciphertext, any modification—whether malicious alteration or accidental transmission corruption—renders the entire payload unreadable.

Is AES-256-GCM secure against quantum computer attacks?▼

Yes. Grover's quantum algorithm provides at most a quadratic speedup against symmetric key searches, effectively reducing 256-bit keys to 128 bits of post-quantum security. 128 bits of security remains physically impossible to brute-force with any conceivable computing technology.

Why do you use 100,000 PBKDF2 iterations instead of a lower number?▼

Human passwords typically have low entropy (often 30-50 bits). 100,000 iterations of HMAC-SHA256 force an attacker attempting a dictionary brute-force attack to perform 100,000 computational rounds for each guess, making offline GPU cracking economically and computationally unviable.

Can TiBox recover my secret if I forget my master passphrase?▼

No. TiBox is a true zero-knowledge utility. Because encryption keys are derived on-the-fly and never transmitted to any server or stored in any database, if you lose your passphrase, there is no mathematical back door to recover your plaintext.

Can I safely encrypt a payload on my Mac and decrypt it on Windows, Linux, or iOS?▼

Absolutely. The exported armored JSON bundle adheres strictly to standardized cryptographic primitives (AES-GCM, PBKDF2, Base64). You can decrypt it using TiBox on any modern browser or using standard OpenSSL and Python cryptography libraries.