import { DataChannelCryptorDecryptStatus } from "../Types";
import { KeyStore } from "./KeyStore";
export interface EncryptToWireFormatParams {
    plaintext: Uint8Array;
    sequenceNumber: number;
}
export interface DecryptFromWireFormatParams {
    frame: Uint8Array;
    lastSequenceNumber: number;
}
export interface ParsedEncryptedFrame {
    version: number;
    sequenceNumber: number;
    keyId: string;
    iv: Uint8Array;
    ciphertext: Uint8Array;
    header: Uint8Array;
}
export declare class DataChannelCryptor {
    private keyStore;
    private readonly textEncoder;
    private readonly textDecoder;
    constructor(keyStore: KeyStore);
    encryptToWireFormat(params: EncryptToWireFormatParams): Promise<Uint8Array>;
    decryptFromWireFormat(params: DecryptFromWireFormatParams): Promise<{
        data: Uint8Array;
        seq: number;
    }>;
    parseEncryptedFrame(frame: Uint8Array, lastSeq: number): ParsedEncryptedFrame;
    private serializeHeader;
    private assertFrameLength;
    private assertKeyId;
    private assertSequence;
    private assertSequenceNumberValue;
    private assertIv;
    private concat;
}
export declare class DataChannelCryptorError extends Error {
    readonly code: DataChannelCryptorDecryptStatus;
    constructor(code: DataChannelCryptorDecryptStatus, message: string);
}