TamCryptoApp

TamCryptoApp is the ultimate personal data security solution, operating on an offline-first model to protect your sensitive information 100% safely on your mobile device.

KEY FEATURES:
• Completely Offline: The application does not require an internet connection, does not send data externally, and is committed to not collecting users' personal information. All operations are performed securely and locally in the device's RAM.

• 4 Powerful Encryption Algorithms: Flexibly integrates various security processing mechanisms including Whitespace Masking, XOR Cipher, Base64 Encoding, and Vigenere Cipher.

• Signature Analyzer: Automatically and quickly identifies the status of a document (original text or encrypted using a specific algorithm) through unique hidden signatures.

• Professional structured file management: Supports creating, editing, opening, and directly saving secure .tam format documents through the standard Android SAF file management system.

• Smart Responsive interface: Automatically optimizes display for all device types, supports intuitive English-Vietnamese bilingual support, and two light/dark modes for comfortable viewing.

INSTRUCTIONS FOR USE:
1. Create or open a .tam document file from your device.

2. Enter the text content to be secured into the text editor.

3. Enter the security key and select your desired encryption algorithm.

4. Press "Encrypt" to hide the content or "Decrypt" to read the original text (requires entering the correct security key).

5. Press "Save" to save the file securely.