import type { SessionToken } from './types.js';
import type { TokenPayload } from '../tokens/types.js';
import type { Key } from '../keys/types.js';
/**
 * Create session token
 * The token is expected to be used by the node's client
 * This uses the HMAC with SHA-256 JWT
 * It is signed with a symmetric key
 * It is deterministic
 * @param payload
 * @param key
 * @param expiry Seconds from now or infinite
 */
declare function createSessionToken(payload: TokenPayload, key: Key, expiry?: number): Promise<SessionToken>;
/**
 * Verifies session token
 * This verifies format, expiry and signature
 * @returns Payload if successful or undefined
 */
declare function verifySessionToken(token: SessionToken, key: Key): Promise<TokenPayload | undefined>;
export { createSessionToken, verifySessionToken };