/**
 * Generate a random salt
 * @returns Uint8Array containing the salt
 */
export declare function generateRandomSalt(): Uint8Array;
/**
 * Derive a key from password and salt using PBKDF2
 * @param password - The password
 * @param salt - The salt to use for PBKDF2
 * @returns Promise resolving to a CryptoKey
 */
export declare function derivePbkdf2EncryptionKey(password: string, salt: string): Promise<CryptoKey>;
/**
 * Derive a specific encryption key from the master key using HKDF
 * @param masterKey - Master key derived from passkey
 * @param context - Context string to derive different keys for different purposes
 * @returns Promise resolving to a CryptoKey that can be used for encryption/decryption
 */
export declare function deriveHkdfEncryptionKey(masterKey: CryptoKey, context: string): Promise<CryptoKey>;
export declare function encryptData(data: string, key: CryptoKey): Promise<{
    iv: number[];
    data: number[];
}>;
export declare function decryptData(encryptedData: {
    iv: number[];
    data: number[];
}, key: CryptoKey): Promise<string>;