import { PrivacyStrategy } from '../privacy/privacy';
import { DownloadParameter } from './download-parameter';
/**
 * This builder class creates the DownloadParameter
 */
export declare class DownloadParameterBuilder {
    private readonly transactionHash;
    private accountPrivateKey?;
    private privacyStrategy?;
    private validateDigest?;
    /**
     * Construct the builder class with transaction hash
     * @param transactionHash the blockchain transaction hash to download
     */
    constructor(transactionHash: string);
    /**
     * Set the account private key of either sender or recipient of the transaction (required for secure messages)
     * @param accountPrivateKey the account private key
     * @return the same instance of this builder
     */
    withAccountPrivateKey(accountPrivateKey: string): DownloadParameterBuilder;
    /**
     * Set the privacy strategy to decrypt the data
     * <br>
     * <br>
     * Privacy strategy defines how the data will be decrypted
     * @param privacyStrategy the privacy strategy
     * @return the same instance of this builder
     */
    withPrivacyStrategy(privacyStrategy: PrivacyStrategy): DownloadParameterBuilder;
    /**
     * Set the privacy strategy as plain
     * <br>
     * <br>
     * Privacy strategy defines how the data will be decrypted
     * @return the same instance of this builder
     */
    withPlainPrivacy(): DownloadParameterBuilder;
    /**
     * Set the privacy strategy as secured with password
     * <br>
     * <br>
     * Privacy strategy defines how the data will be decrypted
     * @param password a 50-character minimum password
     * @return the same instance of this builder
     */
    withPasswordPrivacy(password: string): DownloadParameterBuilder;
    /**
     * Set the privacy strategy as secured with nem keys
     * <br>
     * <br>
     * Privacy strategy defines how the data will be decrypted
     * @param privateKey the private key of one blockchain account that encrypted the data
     * @param publicKey the public key of the other blockchain account that encrypted the data
     * @return the same instance of this builder
     */
    withNemKeysPrivacy(privateKey: string, publicKey: string): DownloadParameterBuilder;
    /**
     * Set the flag that indicates if need to verify digest
     * @param validateDigest the validate digest flag
     * @return the validate digest flag
     */
    withValidateDigest(validateDigest: boolean): DownloadParameterBuilder;
    build(): DownloadParameter;
}