import { AsyncOptionalCreatable } from '@salesforce/kit';
import { KeyChain } from './keyChainImpl';
type CryptoOptions = {
    keychain?: KeyChain;
    platform?: string;
    retryStatus?: string;
    noResetOnClose?: boolean;
};
/**
 * Class for managing encrypting and decrypting private auth information.
 */
export declare class Crypto extends AsyncOptionalCreatable<CryptoOptions> {
    private key;
    private options;
    private noResetOnClose;
    /**
     * Constructor
     * **Do not directly construct instances of this class -- use {@link Crypto.create} instead.**
     *
     * @param options The options for the class instance.
     * @ignore
     */
    constructor(options?: CryptoOptions);
    private static unsetCryptoVersion;
    /**
     * Encrypts text. Returns the encrypted string or undefined if no string was passed.
     *
     * @param text The text to encrypt.
     */
    encrypt(text: string): string;
    /**
     * Decrypts text.
     *
     * @param text The text to decrypt.
     */
    decrypt(text: string): string;
    /**
     * Takes a best guess if the value provided was encrypted by {@link Crypto.encrypt} by
     * checking the delimiter, tag length, and valid characters.
     *
     * @param text The text
     * @returns true if the text is encrypted, false otherwise.
     */
    isEncrypted(text?: string): boolean;
    /**
     * Clears the crypto state. This should be called in a finally block.
     */
    close(): void;
    isV2Crypto(): boolean;
    /**
     * Initialize async components.
     */
    protected init(): Promise<void>;
    private encryptV1;
    private encryptV2;
    private decryptV1;
    private decryptV2;
    private getKeyChain;
}
export {};