Case 9: Security & Data Protection

This example demonstrates advanced security features in GridSheet, including data masking, clipboard protection, and custom security functions for password management.

Implementation Guide

🔒 Security Features Overview

• Data Masking: Password column is partially masked in display (first 2 characters visible, rest as asterisks)
• Clipboard Protection: Copying sensitive data results in masked values in clipboard
• Custom Security Functions: Built-in security functions for data hashing and encryption
• Selective Protection: Only the Password column is protected while others remain fully accessible
• Formula Bar Hidden: Formula bar is disabled to prevent password exposure

How it works

The security system uses a combination of policies and renderers to protect sensitive data:

1. Security Policy: Intercepts clipboard operations and replaces sensitive data with asterisks
2. Security Renderer: Displays partially masked values in the grid interface
3. Custom Functions: Security functions for data hashing and processing
4. Selective Application: Security features are applied only to the Password column

Security Functions

• SECURE_HASH(text): Creates a secure hash of the input text for password storage

Implementation

The security features are implemented using:

• Custom policies with onClip handlers for clipboard protection
• Custom renderers with string methods for display masking
• Custom functions extending BaseFunction for security operations
• Hub configuration to register all security components

This approach ensures that sensitive data remains protected both during display and when copied to external applications.

Try it out

1. Data Masking: Notice how the Password column shows only the first 2 characters, with the rest masked as asterisks
2. Clipboard Protection: Try copying cells from the Password column - you'll get asterisks in your clipboard
3. Custom Functions: The Hash column uses the SECURE_HASH function to generate secure hashes of passwords
4. Visual Indicators: Different colored borders and backgrounds indicate security levels

Security Features Explained

• Data Masking: Password column shows only first 2 characters, rest are masked with asterisks
• Clipboard Protection: Copying sensitive cells results in asterisks in clipboard
• Custom Functions: SECURE_HASH creates hexadecimal hashes for secure password storage
• Selective Protection: Only the Password column is protected, others remain fully accessible
• Formula Bar Hidden: Formula bar is disabled to prevent password exposure in the formula bar

🚀 Advanced Features

• Data Encryption: Encrypt sensitive data at rest and in transit
• Access Control: Role-based access control and permissions
• Audit Logging: Comprehensive audit trails for all actions
• Data Masking: Mask sensitive data in displays and exports
• Compliance: Meet regulatory requirements for data protection