export declare class EncryptionManager {
    private encryptionKey;
    private logger;
    constructor();
    /**
     * Get or create CLI-specific encryption key
     */
    private getOrCreateEncryptionKey;
    /**
     * Encrypts a plain text string - EXACT PORT from frontend
     * @param text The plain text to encrypt
     * @returns The encrypted string, including IV and auth tag
     */
    encrypt(text: string): string;
    /**
     * Decrypts an encrypted string - EXACT PORT from frontend
     * @param encryptedText The encrypted text, including IV and auth tag
     * @returns The original plain text string
     */
    decrypt(encryptedText: string): string;
    /**
     * Validate encryption key format
     */
    private validateKeyFormat;
    /**
     * Get encryption key info (for debugging)
     */
    getKeyInfo(): {
        keyExists: boolean;
        keyValid: boolean;
        keyPath: string;
    };
    /**
     * Rotate encryption key (for security)
     */
    rotateKey(): void;
}
export declare const encryptionManager: EncryptionManager;