import { Registry } from './domain-schema';
export declare const DEFAULT_CIPHER_ALGO = "aes-256-cbc";
export declare const DEFAULT_IV_LENGTH = 16;
export type BdkSet = {
    [keySetId: string]: Buffer;
};
export declare class DomainEventCipher {
    private static self;
    readonly cipherAlgo: string;
    readonly cipherKeyLength: number;
    readonly cipherIvLength: number;
    private bdkSet;
    private ksn;
    private schemaPayload;
    private _bdk;
    private _encKey;
    private bdkThreshold;
    private trsmThreshold;
    constructor(bdkSet?: BdkSet, ksn?: Buffer, cipherAlgo?: string, ivLength?: number, disableSchemaRegistry?: Registry | boolean | null);
    static init(bdkSet?: BdkSet, ksn?: Buffer, cipherAlgo?: string, ivLength?: number, disableSchemaRegistry?: Registry | boolean | null): DomainEventCipher;
    static term(): void;
    static get instance(): DomainEventCipher;
    static get isEnabled(): boolean;
    get isEnabled(): boolean;
    encrypt(buffer: Buffer): Promise<Buffer<ArrayBufferLike>>;
    decrypt(buffer: Buffer): Promise<Buffer<ArrayBuffer>>;
    private get encKey();
    private getBdk;
    private getCipherKeyLength;
}
export declare const getBdkSet: (key: string, isOptional: boolean, value?: string) => BdkSet;