cipher_master/SUGGESTED_UPGRADES.md

⚡ Suggested Upgrades

This document covers architectural, performance, security, and infrastructure enhancements for Cipher Master.

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1. Backend & Performance Enhancements

• Async IO File Generation: Migrate file writing operations in src-tauri/src/lib.rs to asynchronous tokio::fs tasks to keep the UI fully responsive during disk operations.
• Non-Blocking AI Requests: Implement async client connections for Ollama calls with configured timeout thresholds to prevent UI hangs on slow model initializations.

2. Cryptographic & Generator Quality

• Secure Randomness (rand::rngs::OsRng): Upgrade standard PRNG key selection to cryptographically secure random number generators for key generation.
• Index & Vowels Cryptanalysis Metrics: Expand the cipher_hint.txt generator to include standard Index of Coincidence (IC) metrics and bigram frequency counts.

3. Quality Assurance & CI/CD

• Rust Unit Testing Suite: Expand automated test coverage in src-tauri for each cipher engine module (verifying round-trip encode and decode results).
• Automated GUI Testing: Introduce Playwright / WebDriver testing for Tauri frontend IPC commands in GitHub Actions.