# CRP Gateway
## RELEASE NOTES
> v2.2.2

### Upgrade Steps
* Refer to CRP Gateway Patching Guide v2.0 or above

### New Features

* Support Multiple Active Encryption Certificates
  * Allow activation of more than one encryption certificate simultaneously
  * System will attempt to map the correct encryption certificate for message symmetric key decryption
  * If no matching certificate is found, system will return CER00001 error to CRP
  * Manual decryption in Account Management will iterate through all active encryption private keys

* Certificate Pair Validation
  * Added validation to ensure uploaded private key and certificate are a correct pair
  * System will verify the cryptographic relationship between private key and certificate before activation

### Bug Fixes

* TU Converter Improvements
  * Updated TU converter to version 1.5.1 for better error message display
  * Fixed CSV file processing to trim spaces and detect empty lines

* Empty File Decompression
  * Fixed issue where system would attempt to decompress empty files
  * Added validation to check if decrypted file is not empty before decompression

* Error Message Handling
  * Improved error message storage and display for CRP errors
  * Enhanced error handling for Credit Report Enquiry and Data File Submission operations
  * Refactored error handling methods for better maintainability

### Improvements

* Certificate Management
  * Enhanced certificate comparison logic for better accuracy
  * Improved certificate activation and deactivation processes
  * Better error reporting for certificate-related operations

* File Processing
  * Enhanced file validation and processing capabilities
  * Improved handling of various file formats and edge cases

### Other Changes

* Updated various module versions to maintain consistency across the codebase
* Enhanced logging and error reporting throughout the system
* Improved code maintainability and error handling patterns