/**
 * Package hash provides interface for hash functions.
 */
/**
 * Hash interface describes properties of
 * cryptographic hash functions.
 */
export interface Hash {
    readonly digestLength: number;
    readonly blockSize: number;
    update(data: Uint8Array): this;
    reset(): this;
    finish(out: Uint8Array): this;
    digest(): Uint8Array;
    clean(): void;
}
export interface SerializableHash extends Hash {
    saveState(): any;
    restoreState(savedState: any): this;
    cleanSavedState(savedState: any): void;
}
export declare function isSerializableHash(h: Hash): h is SerializableHash;