Major improvements applying DRY (Don't Repeat Yourself) and KISS (Keep It Simple, Stupid):
BACKEND CHANGES:
- Fixed public key storage: Store as base64-encoded bytes in LargeBinary column (not double-encoding)
- ElGamal key generation now produces proper "p:g:h" format with colons
- Removed all double base64-encoding issues
- Simplified API responses to decode bytes to UTF-8 strings for JSON serialization
FRONTEND CHANGES:
- Refactored ElGamalEncryption.encrypt() to use extracted helper methods (_decodeBase64, _parsePublicKey)
- Eliminated nested error handling - now uses clear, composable private methods
- Improved error messages with specific format validation
- Simplified cryptographic operations by reducing code duplication
TESTING:
- Verified public key format: "p:g:h" properly encoded as base64
- Full vote submission flow tested and working
- Blockchain integration confirmed functional
- No encryption errors during vote submission
This fixes the original "Invalid public key format" error that was preventing vote submission.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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