export type XChaCha20CodecConfig = Record<string, unknown>;
export declare const XCHACHA20POLY1305_CODEC_ID = "xchacha20poly1305";
export interface CodecRegistrationOptions {
    getKey: (config: XChaCha20CodecConfig) => Promise<string | Uint8Array> | string | Uint8Array;
    getHeader?: (config: XChaCha20CodecConfig) => Promise<string | Uint8Array | undefined> | string | Uint8Array | undefined;
    nonceGenerator?: () => Promise<Uint8Array | ArrayBuffer | ArrayBufferView | number[]> | Uint8Array | ArrayBuffer | ArrayBufferView | number[];
}
export declare function registerXChaCha20Poly1305Codec(options: CodecRegistrationOptions): void;
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