/**
 * Service for wallet key encryption and decryption operations.
 *
 * @remarks
 * This service separates business logic (wallet key processing) from crypto primitives
 * (ECIES operations). It handles key normalization, data conversion, and format transformation
 * while delegating actual cryptographic operations to the provided ECIES provider.
 *
 * @category Cryptography
 * @internal
 */
import type { ECIESProvider, ECIESEncrypted } from "../ecies/interface";
export interface WalletKeyEncryptionServiceConfig {
    /** ECIES provider for encryption/decryption */
    eciesProvider: ECIESProvider;
}
/**
 * Service for wallet key encryption and decryption operations
 *
 * @remarks
 * This service encapsulates the business logic for wallet key operations,
 * delegating actual cryptographic operations to the provided ECIES provider.
 * It handles key normalization, data conversion, and format transformation.
 *
 * @internal
 */
export declare class WalletKeyEncryptionService {
    private readonly eciesProvider;
    constructor(config: WalletKeyEncryptionServiceConfig);
    /**
     * Encrypts data using a wallet's public key.
     *
     * @param data - The plaintext message to encrypt for the wallet owner.
     * @param publicKey - The recipient wallet's public key for encryption.
     * @returns A promise that resolves to the encrypted data as a hex string.
     * @throws {Error} When encryption fails due to invalid key format.
     *
     * @example
     * ```typescript
     * const encrypted = await processor.encryptWithWalletPublicKey(
     *   "Secret message",
     *   "0x04..." // 65-byte uncompressed public key
     * );
     * console.log(`Encrypted: ${encrypted}`);
     * ```
     */
    encryptWithWalletPublicKey(data: string, publicKey: string | Uint8Array): Promise<string>;
    /**
     * Decrypts data using a wallet's private key.
     *
     * @param encryptedData - The hex-encoded encrypted data to decrypt.
     * @param privateKey - The wallet's private key for decryption.
     * @returns A promise that resolves to the decrypted plaintext message.
     * @throws {Error} When decryption fails due to invalid data or key format.
     *
     * @example
     * ```typescript
     * const decrypted = await processor.decryptWithWalletPrivateKey(
     *   encryptedHexString,
     *   "0x..." // 32-byte private key
     * );
     * console.log(`Decrypted: ${decrypted}`);
     * ```
     */
    decryptWithWalletPrivateKey(encryptedData: string, privateKey: string | Uint8Array): Promise<string>;
    /**
     * Encrypts a Uint8Array with a wallet public key
     *
     * @param data - Binary data to encrypt
     * @param publicKey - Public key as hex string or Uint8Array
     * @returns Encrypted data structure
     */
    encryptBinary(data: Uint8Array, publicKey: string | Uint8Array): Promise<ECIESEncrypted>;
    /**
     * Decrypts to a Uint8Array with a wallet private key
     *
     * @param encrypted - Encrypted data structure
     * @param privateKey - Private key as hex string or Uint8Array
     * @returns Decrypted binary data
     */
    decryptBinary(encrypted: ECIESEncrypted, privateKey: string | Uint8Array): Promise<Uint8Array>;
    /**
     * Gets the underlying ECIES provider
     *
     * @returns The ECIES provider instance
     */
    getECIESProvider(): ECIESProvider;
}