Security Policies

This document details the security policies in Anya.

Policy Areas

1. Code Security

// Security policy enforcement
pub struct SecurityPolicy {
    rules: Vec<SecurityRule>,
    enforcer: PolicyEnforcer,
}

impl SecurityPolicy {
    pub fn enforce(&self, context: &SecurityContext) -> Result<(), PolicyViolation> {
        for rule in &self.rules {
            rule.check(context)?;
        }
        Ok(())
    }
}

// Example security rule implementation
pub struct MinimumKeyLengthRule {
    min_length: usize,
}

impl SecurityRule for MinimumKeyLengthRule {
    fn check(&self, context: &SecurityContext) -> Result<(), PolicyViolation> {
        if context.key_length < self.min_length {
            return Err(PolicyViolation::KeyTooShort);
        }
        Ok(())
    }
}

2. Dependency Security

# Cargo.toml security policies
[package.metadata.policies.security]
minimum_dependency_age = "90 days"
required_security_features = ["authentication", "encryption"]
forbidden_licenses = ["GPL-3.0"]
audit_schedule = "daily"

3. Runtime Security

// Runtime security policy configuration
pub struct RuntimeSecurityConfig {
    pub max_memory_usage: usize,
    pub max_cpu_usage: f64,
    pub max_disk_usage: usize,
    pub max_network_connections: usize,
}

impl RuntimeSecurityConfig {
    pub fn enforce(&self) -> Result<(), SecurityViolation> {
        self.check_memory_usage()?;
        self.check_cpu_usage()?;
        self.check_disk_usage()?;
        self.check_network_connections()?;
        Ok(())
    }
}

Policy Implementation

1. Access Control

pub struct AccessPolicy {
    roles: HashMap<RoleId, Permissions>,
    rules: Vec<AccessRule>,
}

impl AccessPolicy {
    pub fn check_access(&self, user: &User, resource: &Resource) -> Result<(), AccessDenied> {
        let permissions = self.roles.get(&user.role)?;
        if !permissions.can_access(resource) {
            return Err(AccessDenied::InsufficientPermissions);
        }
        for rule in &self.rules {
            rule.validate(user, resource)?;
        }
        Ok(())
    }
}

2. Data Security

pub struct DataSecurityPolicy {
    encryption: EncryptionConfig,
    storage: StorageConfig,
    retention: RetentionConfig,
}

impl DataSecurityPolicy {
    pub fn protect_data(&self, data: &[u8]) -> Result<Vec<u8>, SecurityError> {
        let encrypted = self.encryption.encrypt(data)?;
        self.storage.store(&encrypted)?;
        self.retention.schedule_cleanup(&encrypted)?;
        Ok(encrypted)
    }
}

3. Network Security

pub struct NetworkSecurityPolicy {
    firewall: FirewallConfig,
    rate_limiter: RateLimiter,
    intrusion_detection: IdsConfig,
}

impl NetworkSecurityPolicy {
    pub fn validate_connection(&self, conn: &Connection) -> Result<(), NetworkSecurityError> {
        self.firewall.check_rules(conn)?;
        self.rate_limiter.check_limits(conn)?;
        self.intrusion_detection.analyze(conn)?;
        Ok(())
    }
}

Best Practices

1. Policy Management

  • Regular review
  • Version control
  • Change tracking
  • Compliance monitoring

2. Implementation

  • Automated enforcement
  • Logging and auditing
  • Exception handling
  • Documentation

3. Maintenance

  • Policy updates
  • Compliance checks
  • Training materials
  • Review process