import { BufferAndString, IDecryptionOptionsClassBase, IToBufferOptions } from './typings';
export declare class Decryptor {
    private options;
    constructor(options: IDecryptionOptionsClassBase);
    /**
     * set key for decryption process
     * @param {string} key (or secret) is 256bits (32 charcters) that used to encrypt dan decrypt the data, please store it in the safe places
     */
    setKey(key: string): void;
    /**
     * set options for decryption process
     * @param {IDecryptionOptionsClassBase} options (decryption options, see [[IDecryptionOptionsClassBase]] for more details
     */
    setOptions(options: Partial<IDecryptionOptionsClassBase>): void;
    /**
     * decrypt the encrypted data from strong-cryptor
     * @param {string} encryptedData encrypted string
     * @param {string} key (or secret) is 256bits (32 charcters) that used to encrypt dan decrypt the data (must be same with the encryption process), please store it in the safe places
     * @param {IDecryptionOptionsClassBase} options decryption options, see [[IDecryptionOptionsClassBase]] for more details
     * @returns {string|Buffer} return decrypted string/Buffer
     */
    decrypt<T extends Required<IToBufferOptions>>(encryptedString: string, options?: Partial<T> & Partial<IDecryptionOptionsClassBase>): BufferAndString<T>;
    /**
     * decrypt file that already encrypted from strong-cryptor
     * @param {string} filePath path to file
     * @param {string} key (or secret) is 256bits (32 charcters) that used to encrypt dan decrypt the data (must be same with the encryption process), please store it in the safe places
     * @param {IDecryptionOptionsClassBase} options decryption options, see [[IDecryptionOptionsClassBase]] for more details
     * @returns {string|Buffer} return decrypted string/Buffer
     */
    decryptFile<T extends Required<IToBufferOptions>>(filePath: string, options?: Partial<T> & Partial<IDecryptionOptionsClassBase>): BufferAndString<T>;
    /**
     * decrypt the encrypted data from strong-cryptor to string
     * @param {string} encryptedData encrypted string
     * @param {string} key (or secret) is 256bits (32 charcters) that used to encrypt dan decrypt the data (must be same with the encryption process), please store it in the safe places
     * @param {Encoding} encoding string/text encoding you can choose `base64`(default) or `hex` (must be same with the encryption process)
     * @returns {string} return decrypted string
     */
    private stringDecryptor;
    /**
     * decrypt the encrypted data from strong-cryptor to Buffer
     * @param {string} encryptedData encrypted string
     * @param {string} key (or secret) is 256bits (32 charcters) that used to encrypt dan decrypt the data (must be same with the encryption process), please store it in the safe places
     * @param {Encoding} encoding string/text encoding you can choose `base64`(default) or `hex` (must be same with the encryption process)
     * @returns {Buffer} return decrypted data as a Buffer
     */
    private bufferDecryptor;
}