Overview
SYHash is a specialized hashing system designed for secure text encryption and time-limited decryption. It combines high-level security with a built-in expiration mechanism.
Key Features
Security
- Utilizes AES-256-CBC encryption algorithm
- Generates unique salt value for each hash
- Implements secret key encryption
- 10-day validity period
Capacity
- Handles up to 1 MB of text per operation
- Full Unicode character support
- Suitable for long-form text encryption
Time Management
- 10-day hash validity
- Remaining time display in days
- Creation and expiration timestamp tracking
Usage Instructions
Encoding Process
- Enter your text in the "Text to SYHash ENCODE" field
- Click the "Generate SYHash →" button
- Copy the generated hash
Decoding Process
- Paste the hash into "SYHash to Text" field
- Click "← Decode" button
- View decoded text and hash information
Hash Status Indicators
- VALID: Hash is current and usable
- EXPIRED: Hash has exceeded its validity period
- EXPIRED (Master Access): Viewing expired hash with master key
Security Notes
- Hashes irreversibly expire after 10 days
- Decryption impossible without secret key
- Master key required for expired hash viewing
- Each hash is unique and non-replicable
Applications
- Temporary encrypted messaging
- Time-limited document sharing
- Secure data transfer
- Time-restricted access information
Best Practices
- Store hashes securely
- Backup important data before expiration
- Split large texts into manageable chunks
- Use master key only when necessary