import { NonceCache } from "@kya-os/contracts/handshake";
/**
 * Redis-based nonce cache implementation
 * Suitable for multi-instance deployments
 */
export declare class RedisNonceCache implements NonceCache {
    private redis;
    private keyPrefix;
    constructor(redis: any, keyPrefix?: string);
    private getKey;
    has(nonce: string, agentDid?: string): Promise<boolean>;
    add(nonce: string, ttl: number, agentDid?: string): Promise<void>;
    cleanup(): Promise<void>;
}