Rust Secure Logger

A memory-safe, thread-safe logging library designed for financial systems and critical infrastructure where security and audit trails are essential.

🔒 Security-First Design

Built with Rust to eliminate memory safety vulnerabilities that cause 70% of security incidents in traditional C/C++ systems. Aligns with 2024 CISA/FBI guidance recommending memory-safe languages for critical infrastructure.

Features

✅ Memory Safety - Rust's ownership system prevents buffer overflows and use-after-free errors
✅ Thread Safety - Concurrent logging without data races
✅ Tamper Detection - Cryptographic hashing (SHA-256) of all log entries
✅ Structured Logging - JSON format for easy parsing and SIEM integration
✅ Audit Trail - Immutable log entries with timestamps and integrity verification
✅ Financial Systems Ready - Designed for regulatory compliance (SOX, GLBA, PCI-DSS)

Use Cases

Financial transaction logging
Security event monitoring
Compliance audit trails
Critical infrastructure logging
Tamper-evident record keeping

Installation

Add to your Cargo.toml:

[dependencies]
rust-secure-logger = "0.1.0"

Quick Start

use rust_secure_logger::{SecureLogger, SecurityLevel};

fn main() {
    let logger = SecureLogger::new();

    // Log different security levels
    logger.info("Application started");
    logger.warning("High memory usage detected");

    // Log security events with metadata
    logger.security_event(
        "Failed login attempt",
        Some(serde_json::json!({
            "ip": "192.168.1.100",
            "username": "admin",
            "timestamp": "2024-11-06T00:00:00Z"
        }))
    );

    // Log audit trail for financial transactions
    logger.audit(
        "Wire transfer initiated",
        Some(serde_json::json!({
            "amount": 50000.00,
            "from_account": "****1234",
            "to_account": "****5678",
            "user_id": "12345"
        }))
    );

    // Verify integrity of all logs
    assert!(logger.verify_all_integrity());

    // Export logs as JSON
    let json = logger.export_json().unwrap();
    println!("{}", json);
}

Security Features

Cryptographic Integrity

Every log entry includes a SHA-256 hash of its content for tamper detection:

let entry = LogEntry::new(SecurityLevel::Audit, "Transaction processed".to_string(), None);
assert!(entry.verify_integrity()); // Verify entry hasn't been tampered with

Thread Safety

Safe concurrent logging from multiple threads:

use std::thread;

let logger = SecureLogger::new();

let handles: Vec<_> = (0..10).map(|i| {
    let logger_clone = logger.clone();
    thread::spawn(move || {
        logger_clone.info(format!("Thread {} message", i));
    })
}).collect();

for handle in handles {
    handle.join().unwrap();
}

assert_eq!(logger.get_entries().len(), 10);

Filtering and Queries

// Get all audit entries
let audit_logs = logger.get_entries_by_level(SecurityLevel::Audit);

// Count security events
let security_event_count = logger.count_by_level(SecurityLevel::SecurityEvent);

// Export filtered logs
let critical_logs = logger.get_entries_by_level(SecurityLevel::Critical);

Security Levels

Info - Informational messages
Warning - Warnings that may require attention
SecurityEvent - Security events requiring review
Critical - Critical security incidents
Audit - Audit trail entries (financial transactions, access control)

Examples

See the examples/ directory:

cargo run --example basic_usage
cargo run --example audit_trail

Testing

cargo test

Alignment with Federal Guidance

This library implements security best practices recommended by:

CISA/FBI Joint Guidance (2024) - Memory-safe languages for critical infrastructure
Executive Order 14028 (2021) - Improving the Nation's Cybersecurity
NSA Cybersecurity Information Sheet - Software Memory Safety

By using Rust, this library eliminates entire classes of vulnerabilities:

Buffer overflows
Use-after-free errors
Data races
Null pointer dereferences

Use in Financial Systems

Designed for financial institutions requiring:

SOX compliance - Audit trail requirements
GLBA compliance - Financial data protection
PCI-DSS compliance - Payment card industry standards
Regulatory reporting - Immutable audit trails
Incident response - Security event logging

Performance

Low overhead - Minimal performance impact
Async-ready - Compatible with tokio and async-std
Scalable - Handles high-volume logging in production systems

License

MIT License - See LICENSE file

Author

Tony Chuks Awunor

Former FINMA-regulated forex broker operator (2008-2013)
M.S. Computer Science (CGPA: 4.52/5.00)
EC-Council Certified SOC Analyst (CSA)
Specialization: Memory-safe systems programming for financial infrastructure

Contributing

Contributions welcome! Please open an issue or pull request.

Related Projects

rust-crypto-utils - Cryptographic utilities
rust-transaction-validator - Financial transaction validation
rust-threat-detector - SIEM threat detection

Citation

If you use this library in research or production systems, please cite:

Awunor, T.C. (2024). Rust Secure Logger: Memory-Safe Logging for Financial Systems.
https://github.com/guardsarm/rust-secure-logger

Built for critical infrastructure. Designed for security. Implemented in Rust.

rust-secure-logger 0.1.0