export declare enum CryptoAlgorithm {
    AES256CTR = "aes-256-ctr",
    AES256GCM = "aes-256-gcm"
}
export declare class Crypto {
    static secretKey: string;
    /**
     * Make a encrypted text using key process.env.SECRET_KEY with the spesific algorithm.
     * Please see CryptoAlgorithm enum for supported algorithm
     * @param plain string
     * @param algorithm CryptoAlgorithm
     * @returns string
     */
    static encrypt: (plain: string, algorithm?: string) => string;
    /**
     * Decrypt the chipper message using key process.env.SECRET_KEY with the spesific algorithm.
     * Please see CryptoAlgorithm enum for supported algorithm
     * @param cryptedMessage string
     * @param algorithm CryptoAlgorithm
     * @returns string
     */
    static decrypt: (cryptedMessage: string, algorithm?: string) => string;
}