import { StateEvent } from "./RoomEvent";
/**
 * The kinds of room encryption algorithms allowed by the spec.
 * @category Models
 * @see EncryptionEvent
 */
export declare enum RoomEncryptionAlgorithm {
    MegolmV1AesSha2 = "m.megolm.v1.aes-sha2"
}
/**
 * The content definition for m.room.encryption events
 * @category Matrix event contents
 * @see EncryptionEvent
 */
export interface EncryptionEventContent {
    /**
     * The encryption algorithm for the room.
     */
    algorithm: string | RoomEncryptionAlgorithm;
    /**
     * How long a session should be used before changing it.
     */
    rotation_period_ms?: number;
    /**
     * How many messages should be sent before changing the session.
     */
    rotation_period_msgs?: number;
}
/**
 * Represents an m.room.encryption state event
 * @category Matrix events
 */
export declare class EncryptionEvent extends StateEvent<EncryptionEventContent> {
    constructor(event: any);
    /**
     * The encryption algorithm for the room.
     */
    get algorithm(): string | RoomEncryptionAlgorithm;
    /**
     * How long a session should be used before changing it. Defaults to a week.
     */
    get rotationPeriodMs(): number;
    /**
     * How many messages should be sent before a session changes. Defaults to 100.
     */
    get rotationPeriodMessages(): number;
}