RSA密钥对使用充气城堡生成。制作code从java程序可运行

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问题描述

我使用Java code，我发现，生成一个公共和通过充气城堡库中的私钥。我的问题是实现它为code。通过我的Android设备运行的。像我是编程，并通过我的大部分故障排除我的code不显示RSA密钥我仍然无法让我的code照我问，虽然我没有得到任何错误。我怀疑是我把我所有的code进入方式尝试 / 抓块，但我不能真的确定。
编辑：在低code

这是生成的RSA公钥和私钥的Java类。（它的工作原理）

 公共类ClassMain {
    公共静态无效的主要（字串[] args）抛出异常{
        串ST =Ebenezersawesome;
        字节[] =明文ST.getBytes（UTF8）;
        //生成RSA密钥
        的System.out.println（\\ n开始生成RSA密钥）;
        KeyPairGenerator的注册机= KeyPairGenerator.getInstance（RSA）;
        keyGen.initialize（4096）;
        密钥对键= keyGen.generateKeyPair（）;
        的System.out.println（说完产生RSA密钥）;
        //
        //创建一个RSA Cipher对象（指定算法，模式，
        //填充）。
        密码加密= Cipher.getInstance（RSA / ECB / PKCS1Padding）;
        //
        //打印提供商信息
        的System.out.println（\\ n+ cipher.getProvider（）的getInfo（））;
        的System.out.println（\\ n开始加密）;
        //
        //初始化Cipher对象。
        cipher.init（Cipher.ENCRYPT_MODE，key.getPublic（））;
        //
        //使用公共密钥加密明文
        字节[] =密文cipher.doFinal（明文）;
        的System.out.println（完成加密：）;
        的System.out.println（新的String（密文UTF8））;
        的System.out.println（\\ n开始解密）;
        //
        //初始化Cipher对象。
        cipher.init（Cipher.DECRYPT_MODE，key.getPrivate（））;
        //
        //使用私钥解密密文
        字节[] = newPlainText cipher.doFinal（密文）;
        的System.out.println（完成解密：）;
        的System.out.println（新的String（newPlainTextUTF8））;
    }
}

这是我尝试在Android应用程序，以显示code尝试。
编辑：在code ++工程，但由于某种原因，我的try / catch停止，并且不产生TV3 code

  TextView的TV1;
    TextView中TV2;
    TextView的TV3;
    按钮转换;
    字符串publicKeyFilename = NULL;
    字符串privateKeyFilename = NULL;
    串ST =Ebenezersawesome;    @覆盖公共无效的onCreate（捆绑savedInstanceState）
    {
        super.onCreate（savedInstanceState）;
        的setContentView（R.layout.main）;
        Log.d（EBZ，制造它的onCreate）;
        TV1 =（的TextView）findViewById（R.id.tv1）;
        TV2 =（的TextView）findViewById（R.id.tv2）;
        TV3 =（的TextView）findViewById（R.id.tv3）;
        转换=（按钮）findViewById（R.id.button1）;        // tv2.setText（ST）;
        convert.setOnClickListener（新OnClickListener（）{
            公共无效的onClick（视图v）{
                Log.d（EBZ，制造它的onCreate）;
                尝试{
                    字节[] =明文ST.getBytes（UTF8）;
                    Log.d（EBZ，去到try块）;
                    KeyPairGenerator的注册机=的KeyPairGenerator
                            .getInstance（RSA）;
                    keyGen.initialize（2048）;
                    密钥对键= keyGen.generateKeyPair（）;
                    密码加密= Cipher.getInstance（RSA / ECB / PKCS1Padding）;
                    tv1.setText（。cipher.getProvider（）的getInfo（）的toString（））;
                    Log.d（EBZ，制造它通过TV1）;
                    //tv1.setText(ST）;
                    cipher.init（Cipher.ENCRYPT_MODE，key.getPublic（））;
                    字节[] =密文cipher.doFinal（明文）;
                    tv2.setText（。新的String（密文UTF8）的toString（））;
                    Log.d（EBZ，制造它通过TV2）;
                    // tv2.setText（ST）;
                    字节[] = newPlainText cipher.doFinal（密文）;
                     //tv3.setText(new字符串（newPlainTextUTF8）的toString（））;
                    // tv3.setText（ST）;
                    Log.d（EBZ，制造它通过TV3）;
                }赶上（例外五）{
                    的System.out.println（错误）;
                }
            }
        }）;
    }

解决方案

好吧尝试以下code，而不是你，看到你的的try / catch 块里面发生了什么。

  TextView的TV1;
TextView中TV2;
TextView的TV3;
按钮转换;
字符串publicKeyFilename = NULL;
字符串privateKeyFilename = NULL;
串ST =Ebenezersawesome;@覆盖公共无效的onCreate（捆绑savedInstanceState）
{
    super.onCreate（savedInstanceState）;
    的setContentView（R.layout.main）;
    Log.d（EBZ，制造它的onCreate）;
    TV1 =（的TextView）findViewById（R.id.tv1）;
    TV2 =（的TextView）findViewById（R.id.tv2）;
    TV3 =（的TextView）findViewById（R.id.tv3）;
    转换=（按钮）findViewById（R.id.button1）;    尝试{
                字节[] =明文ST.getBytes（UTF8）;
                Log.d（EBZ，去到try块）;
                注册机的KeyPairGenerator =
                    KeyPairGenerator.getInstance（RSA）;
                keyGen.initialize（4096）;
                密钥对键= keyGen.generateKeyPair（）;
                密码加密=
                    Cipher.getInstance（RSA / ECB / PKCS1Padding）;
                tv3.setText（。cipher.getProvider（）的getInfo（）的toString（））;
                //tv3.setText(ST）;
                cipher.init（Cipher.ENCRYPT_MODE，key.getPublic（））;
                字节[] =密文cipher.doFinal（明文）;
                tv1.setText（。新的String（密文UTF8）的toString（））;
                //tv1.setText(ST）;
                字节[] = newPlainText cipher.doFinal（密文）;
                tv2.setText（。新的String（newPlainTextUTF8）的toString（））;
                //tv2.setText(ST）;
            }赶上（例外五）{
                的System.out.println（错误）;
            }
    // tv2.setText（ST）;
    convert.setOnClickListener（新OnClickListener（）{
        公共无效的onClick（视图v）{
            Log.d（EBZ，制造它的onCreate）;
        }
    }）;
}

I am using a Java code that I found that generates a public and a private key via the bouncy castle library. My problem is implementing it into code runnable by my android device. My code does not display the RSA keys like I programmed it to and through most of my troubleshooting I am still unable to make my code do as I ask, although I get no errors. My suspicion is the way I put all of my code into a try/catch block but I am not really sure.Edit: Lower in code

This is the Java class that generates the RSA public and private key. (It works)

public class ClassMain {
    public static void main(String[]args) throws Exception {
        String ST = "Ebenezersawesome";
        byte[] plainText = "ST".getBytes("UTF8");
        // Generating RSA Key
        System.out.println("\nStart generating RSA key");
        KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
        keyGen.initialize(4096);
        KeyPair key = keyGen.generateKeyPair();
        System.out.println("Finish generating RSA key");
        //
        // Creates an RSA Cipher object (specifying the algorithm, mode, and
        // padding).
        Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
        //
        // Print the provider information
        System.out.println("\n" + cipher.getProvider().getInfo());
        System.out.println("\nStart encryption");
        //
        // Initializes the Cipher object.
        cipher.init(Cipher.ENCRYPT_MODE, key.getPublic());
        //
        // Encrypt the plaintext using the public key
        byte[] cipherText = cipher.doFinal(plainText);
        System.out.println("Finish encryption: ");
        System.out.println(new String(cipherText, "UTF8"));
        System.out.println("\nStart decryption");
        //
        // Initializes the Cipher object.
        cipher.init(Cipher.DECRYPT_MODE, key.getPrivate());
        //
        // Decrypt the ciphertext using the private key
        byte[] newPlainText = cipher.doFinal(cipherText);
        System.out.println("Finish decryption: ");
        System.out.println(new String(newPlainText, "UTF8"));
    }
}

This is my attempt at trying to display the code in an android application.Edit: The code works but for some reason my try/catch stops and does not generate code in tv3.

  TextView tv1;
    TextView tv2;
    TextView tv3;
    Button convert;
    String publicKeyFilename = null;
    String privateKeyFilename = null;
    String ST = "Ebenezersawesome";

    @Override public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        Log.d("Ebz", "Made it to onCreate");
        tv1 = (TextView) findViewById(R.id.tv1);
        tv2 = (TextView) findViewById(R.id.tv2);
        tv3 = (TextView) findViewById(R.id.tv3);
        convert = (Button) findViewById(R.id.button1);

        // tv2.setText(ST);
        convert.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                Log.d("Ebz", "Made it to onCreate");
                try {
                    byte[] plainText = "ST".getBytes("UTF8");
                    Log.d("Ebz", "made it to Try Block");
                    KeyPairGenerator keyGen = KeyPairGenerator
                            .getInstance("RSA");
                    keyGen.initialize(2048);
                    KeyPair key = keyGen.generateKeyPair();
                    Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
                    tv1.setText(cipher.getProvider().getInfo().toString());
                    Log.d("Ebz", "Made it passed tv1");
                    //tv1.setText(ST);
                    cipher.init(Cipher.ENCRYPT_MODE, key.getPublic());
                    byte[] cipherText = cipher.doFinal(plainText);
                    tv2.setText(new String(cipherText, "UTF8").toString());
                    Log.d("Ebz", "Made it passed tv2");
                    // tv2.setText(ST);
                    byte[] newPlainText = cipher.doFinal(cipherText);
                     //tv3.setText(new String(newPlainText, "UTF8").toString());
                    // tv3.setText(ST);
                    Log.d("Ebz", "Made it passed tv3");
                } catch (Exception e) {
                    System.out.println("error");
                }
            }
        });
    }

解决方案

Ok try following code instead yours and see what happens inside your try/catch block.

TextView tv1;
TextView tv2;
TextView tv3;
Button convert;
String publicKeyFilename = null;
String privateKeyFilename = null;
String ST = "Ebenezersawesome";

@Override public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    Log.d("Ebz", "Made it to onCreate");
    tv1 = (TextView) findViewById(R.id.tv1);
    tv2 = (TextView) findViewById(R.id.tv2);
    tv3 = (TextView) findViewById(R.id.tv3);
    convert = (Button) findViewById(R.id.button1);

    try {
                byte[]plainText = "ST".getBytes("UTF8");
                Log.d("Ebz", "made it to Try Block");
                KeyPairGenerator keyGen =
                    KeyPairGenerator.getInstance("RSA");
                keyGen.initialize(4096);
                KeyPair key = keyGen.generateKeyPair();
                Cipher cipher =
                    Cipher.getInstance("RSA/ECB/PKCS1Padding");
                tv3.setText(cipher.getProvider().getInfo().toString());
                //tv3.setText(ST);
                cipher.init(Cipher.ENCRYPT_MODE, key.getPublic());
                byte[]cipherText = cipher.doFinal(plainText);
                tv1.setText(new String(cipherText, "UTF8").toString());
                //tv1.setText(ST);
                byte[]newPlainText = cipher.doFinal(cipherText);
                tv2.setText(new String(newPlainText, "UTF8").toString());
                //tv2.setText(ST);
            } catch(Exception e) {
                System.out.println("error");
            }
    // tv2.setText(ST);
    convert.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            Log.d("Ebz", "Made it to onCreate");
        }
    });
}

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