/**
 * 补全16进制字符串
 */
/**
 * utf8 串转字节数组
 */
export declare function utf8ToArray(str: string): Uint8Array<ArrayBuffer>;
export declare function sm3(input: string | Uint8Array, options?: {
    key: Uint8Array | string;
    mode?: 'hmac' | 'mac';
}): string;
export default sm3;
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