Data Marketplace Smart Contract

[Hillzo]

Data Marketplace Smart Contract

Summary

Added comprehensive input validation and security measures to the data marketplace smart contract to address Clarinet warnings and enhance overall contract security.

Some key changes made

• Implemented validation functions for string inputs (description, category, access keys)
• Added asset ID range validation across all public functions
• Enhanced payment processing security checks
• Added new error constant (error-invalid-input) for better error handling
• Improved data structure validation before state changes

Security Improvements

• Prevents empty or malformed data entries
• Validates asset IDs are within valid range
• Ensures non-zero prices and valid fee percentages
• Strengthens access control for data retrieval

Impact

These changes improve the contract's security without affecting its core functionality, making it safer for marketplace participants while maintaining the same user experience.