/**
 *
 * @param text Value to be encrypted
 * @param key Key used to encrypt value must be 32 bytes for AES256 encryption algorithm
 *
 * @returns Encrypted value using key
 */
export declare const symmetricEncrypt: (text: string, key: string) => string;
/**
 *
 * @param text Value to decrypt
 * @param key Key used to decrypt value must be 32 bytes for AES256 encryption algorithm
 */
export declare const symmetricDecrypt: (text: string, key: string) => string;
export declare const getHash: (key: string) => string;
export declare const encryptAES128: (encryptionKey: string, data: string) => string;
export declare const decryptAES128: (encryptionKey: string, data: string) => string;
export declare const generateLocalSignedUrl: (fileName: string, environmentId: string, fileType: string) => {
    signature: string;
    uuid: string;
    timestamp: number;
};
export declare const validateLocalSignedUrl: (uuid: string, fileName: string, environmentId: string, fileType: string, timestamp: number, signature: string, secret: string) => boolean;