import type { Address } from 'viem';
import type { SIWESession } from '../connectors/types.js';
/**
 * Generate a random nonce for SIWE
 */
export declare function generateNonce(): string;
/**
 * Create a SIWE message
 */
export declare function createSIWEMessage(params: {
    address: Address;
    chainId: number;
    domain: string;
    nonce: string;
    statement?: string;
    uri?: string;
    version?: string;
    issuedAt?: string;
    expirationTime?: string;
}): string;
/**
 * Store SIWE session for a specific address
 */
export declare function storeSIWESession(session: SIWESession): void;
/**
 * Get stored SIWE session for a specific address
 */
export declare function getSIWESession(address: Address): SIWESession | null;
/**
 * Clear SIWE session for a specific address
 */
export declare function clearSIWESession(address: Address): void;
/**
 * Clear all SIWE sessions
 */
export declare function clearAllSIWESessions(): void;
/**
 * Check if address has valid SIWE session
 */
export declare function hasValidSIWESession(address: Address): boolean;