Module entropy 

Entropy Quality Monitoring

This module provides tools for monitoring and assessing the quality of entropy sources used for cryptographic key generation and random number generation.

Features

• Statistical tests: Chi-squared, Monte Carlo Pi estimation, serial correlation
• Entropy estimation: Shannon entropy, min-entropy calculations
• NIST SP 800-90B compliance: Health tests for entropy sources
• Continuous monitoring: Track entropy quality over time
• Anomaly detection: Detect degraded or compromised entropy sources
• Compliance reporting: Generate reports for auditing

Example

use chie_crypto::entropy::{EntropyMonitor, EntropySource};

// Create an entropy monitor
let mut monitor = EntropyMonitor::new();

// Test random bytes from system RNG
let mut rng_source = EntropySource::system_rng();
let random_data = rng_source.get_bytes(1000);

// Evaluate entropy quality
let quality = monitor.evaluate(&random_data).unwrap();
println!("Entropy quality: {:?}", quality);
println!("Shannon entropy: {:.2} bits/byte", quality.shannon_entropy);
println!("Passes health tests: {}", quality.passes_health_tests());

Structs

EntropyMonitor

Entropy monitor for continuous quality assessment

EntropyQuality

Entropy quality assessment result

EntropySource

Entropy source wrapper

Enums

EntropyError

Entropy error types

Type Aliases

EntropyResult

Result type for entropy operations