public class Encryption { public String DEScrypt(String text, String key) { String cryptedString = null; // тело алгоритма return cryptedString; } public String RSAcrypt(String text, String key) { String cryptedString = null; // тело алгоритма return cryptedString; } public String GOSTcrypt(String text, String key) { String cryptedString = null;…

company_CryptoAlgorithm.java

package com.company;

/**
 * @author eutkin
 */
public enum CryptoAlgorithm implements Encryptor {
    DES(new DESEncryptor()), GOST(new GOSTEncryptor()), RSA(new RSAEncryptor());

    private final Encryptor delegate;

    CryptoAlgorithm(Encryptor delegate) {
        this.delegate = delegate;
    }

    @Override
    public String crypt(String text, String key) {
        return delegate.crypt(text, key);
    }
}

company_DESEncryptor.java

package com.company;

public class DESEncryptor implements Encryptor {

    @Override
    public String crypt(String text, String key) {
        String cryptedString = null;
        // тело алгоритма
        return cryptedString;
    }
}

company_Encryption.java

package com.company;

import static com.company.CryptoAlgorithm.DES;

public class Encryption {

    public static void main(String[] args) {
        String key = "key";
        String text = "text";
        String cryptedText = DES.crypt(text, key);

    }
}

company_Encryptor.java

package com.company;

public interface Encryptor {

    String crypt(String text, String key);
}

company_GOSTEncryptor.java

package com.company;


public class GOSTEncryptor implements Encryptor {
    @Override
    public String crypt(String text, String key) {
        String cryptedString = null;
        // тело алгоритма
        return cryptedString;
    }
}

company_RSAEncryptor.java

package com.company;

public class RSAEncryptor implements Encryptor {
    @Override
    public String crypt(String text, String key) {
        String cryptedString = null;
        // тело алгоритма
        return cryptedString;
    }
}