import { ValidHashEncodings } from "./types";
declare class Sha256Hasher {
    private A;
    private B;
    private C;
    private D;
    private E;
    private F;
    private G;
    private H;
    private _byte;
    private _word;
    private _size;
    constructor();
    update(data: Uint8Array): this;
    update(data: string): this;
    update(data: string, encoding: ValidHashEncodings): this;
    private _uint8;
    private _int32;
    digest(): Uint8Array;
    digest(encoding: ValidHashEncodings): string;
    private _bin;
}
declare function sha256Buffer(data: Uint8Array | Int8Array | Uint16Array | Int16Array | Uint32Array | Int32Array | BigUint64Array | BigInt64Array | ArrayBuffer, encoding?: ValidHashEncodings): Uint8Array | string;
declare function sha256Hex(hexString: string, encoding?: ValidHashEncodings): string | Uint8Array;
export { sha256Buffer, sha256Hex, Sha256Hasher, };