import type { AuditEvent } from '../types.js';
export type ComplianceExportFormat = 'csv' | 'json' | 'parquet';
export type AuditLogFilter = {
    startDate?: Date;
    endDate?: Date;
    eventType?: string;
    keyId?: string;
    success?: boolean;
    limit?: number;
};
export type ComplianceReport = {
    generatedAt: Date;
    eventCount: number;
    keyIds: string[];
    eventTypes: Set<string>;
    successRate: number;
    suspiciousActivity: AuditEvent[];
};
/**
 * Enhanced audit logging with compliance reporting and event search
 * Phase 1: Comprehensive audit logging for regulatory compliance
 */
export declare class ComplianceAuditLogger {
    private auditLog;
    private readonly maxLogSize;
    constructor(maxLogSize?: number);
    /**
     * Record an audit event
     */
    record(event: AuditEvent): void;
    /**
     * Search audit logs with filters
     */
    searchLogs(filter: AuditLogFilter): AuditEvent[];
    /**
     * Generate compliance report
     */
    generateComplianceReport(filter?: AuditLogFilter): ComplianceReport;
    /**
     * Export audit logs in specified format
     */
    exportLogs(filter: AuditLogFilter, format?: ComplianceExportFormat): string;
    /**
     * Detect suspicious activity patterns
     */
    private detectSuspiciousActivity;
    /**
     * Clear audit logs (with caution)
     */
    clear(): void;
    /**
     * Get total audit log entries
     */
    getLogCount(): number;
}
//# sourceMappingURL=compliance-audit.d.ts.map