InvalidKeySpecException : algid parse error, nicht eine Folge

Ich Schreibe ein Programm, das als Eingabe von der Konsole aus - der name der zip-Datei die name der zip-Datei gemacht werden containig (de/en)crypted-Dateien generiert, die von der ersten zip-und eine Datei mit den öffentlichen Schlüssel. Ich bekomme die exception beim entschlüsseln:

Exception in thread "main" java.security.spec.InvalidKeySpecException: java.security.InvalidKeyException: IOException : algid parse error, not a sequence
at sun.security.rsa.RSAKeyFactory.engineGeneratePrivate(RSAKeyFactory.java:217)
at java.security.KeyFactory.generatePrivate(KeyFactory.java:372)
at com.Main.makePrivateKey(Main.java:148)
at com.Main.decrypt(Main.java:40)
at com.Main.main(Main.java:182)
Caused by: java.security.InvalidKeyException: IOException : algid parse error, not a sequence
at sun.security.pkcs.PKCS8Key.decode(PKCS8Key.java:351)
at sun.security.pkcs.PKCS8Key.decode(PKCS8Key.java:356)
at sun.security.rsa.RSAPrivateCrtKeyImpl.<init>(RSAPrivateCrtKeyImpl.java:91)
at sun.security.rsa.RSAPrivateCrtKeyImpl.newKey(RSAPrivateCrtKeyImpl.java:75)
at sun.security.rsa.RSAKeyFactory.generatePrivate(RSAKeyFactory.java:316)
at sun.security.rsa.RSAKeyFactory.engineGeneratePrivate(RSAKeyFactory.java:213)
... 4 more

Kann nicht herausfinden, warum, weil das ich die richtige Skillung in der makePrivateKey Methode. Die Tasten Teste ich mit werden(eine Zeile nach einem Schlüssel, der jeweils in einer separaten Datei):

Öffentlicher Schlüssel:

MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCE3pA746UfpC8sFk8ZJp0yupyJqj5jy6cjdxUYoP7mCm7c0mqQDeCcDNBYW2eSozCioPrH/9L+CDQEPLYakoem+jFnUKDH5+pru/0PJTJJF8Xh/ZT9eJlvsYBr1/qSfICf6RTs7kzwq9IuSZBw7/tfNEF9i0A8FVox6HOopXod1QIDAQAB

Privater Schlüssel:

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

Den code für das Programm ist unten . Jede Hilfe ist wellcomed 🙂

package com;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.security.GeneralSecurityException;
import java.security.KeyFactory;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.Security;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.util.Base64;
import java.util.Enumeration;
import java.util.Scanner;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;

import javax.crypto.Cipher;

public class Main {

public final static int BUFFER_SIZE = 117;

public static void decrypt(String originalZipFileName, String newZipFileName, String privateKeyFileName) throws Exception {
    byte[] buffer = new byte[BUFFER_SIZE];  

    ZipFile originalZipFile = new ZipFile(originalZipFileName); 
    ZipOutputStream newZipFile = new ZipOutputStream(new FileOutputStream(newZipFileName));

    Enumeration<? extends ZipEntry> zipEntries = originalZipFile.entries();

    String privateKey = getKeyString(privateKeyFileName);
    PrivateKey key = makePrivateKey(privateKey);

    Cipher cipher = Cipher.getInstance("RSA");

    cipher.init(Cipher.DECRYPT_MODE, key);
    File file = new File("temp.txt");

    while(zipEntries.hasMoreElements()){

        ZipEntry entry = zipEntries.nextElement();          

        ZipEntry copy = new ZipEntry(entry.getName());      
        newZipFile.putNextEntry(copy);

        int read;           
        InputStream inputEntry = originalZipFile.getInputStream(entry);
        OutputStream outputFile = new FileOutputStream(file);

        while((read = inputEntry.read(buffer)) != -1){              
            outputFile.write(cipher.doFinal(buffer), 0, read);
        }

        InputStream inputTempFile = new FileInputStream(file);

        while((read = inputTempFile.read(buffer)) != -1){
            newZipFile.write(buffer, 0, read);
        }

        newZipFile.closeEntry();
        inputEntry.close();
        inputTempFile.close();
        outputFile.close();
        file.delete();
    }
    newZipFile.close();
}

public static void encrypt(String originalZipFileName, String newZipFileName, String publicKeyFileName) throws Exception{

    byte[] buffer = new byte[BUFFER_SIZE];  

    ZipFile originalZipFile = new ZipFile(originalZipFileName); 
    ZipOutputStream newZipFile = new ZipOutputStream(new FileOutputStream(newZipFileName));

    Enumeration<? extends ZipEntry> zipEntries = originalZipFile.entries();

    String publicKey = getKeyString(publicKeyFileName);
    PublicKey key = makePublicKey(publicKey);

    Cipher cipher = Cipher.getInstance("RSA");

    cipher.init(Cipher.ENCRYPT_MODE, key);
    File file = new File("temp.txt");

    while(zipEntries.hasMoreElements()){

        ZipEntry entry = zipEntries.nextElement();          

        ZipEntry copy = new ZipEntry(entry.getName());      
        newZipFile.putNextEntry(copy);

        int read;           
        InputStream inputEntry = originalZipFile.getInputStream(entry);
        OutputStream outputFile = new FileOutputStream(file);

        while((read = inputEntry.read(buffer)) != -1){              
            outputFile.write(cipher.doFinal(buffer), 0, read);
        }

        InputStream inputTempFile = new FileInputStream(file);

        while((read = inputTempFile.read(buffer)) != -1){
            newZipFile.write(buffer, 0, read);
        }

        newZipFile.closeEntry();
        inputEntry.close();
        inputTempFile.close();
        outputFile.close();
        file.delete();
    }
    newZipFile.close();
}   

public static String getKeyString(String fileName){

    String key = new String();
    try {
        BufferedReader buf = new BufferedReader(new FileReader(fileName));
        key = buf.readLine();       
    } catch ( IOException e) {
        e.printStackTrace();
    }   

    return key.trim();
}

public static PublicKey makePublicKey(String stored) throws GeneralSecurityException {
    byte[] data = Base64.getDecoder().decode(stored);
    X509EncodedKeySpec spec = new  X509EncodedKeySpec(data);
    KeyFactory fact = KeyFactory.getInstance("RSA");
    return fact.generatePublic(spec);
}

public static PrivateKey makePrivateKey(String stored) throws GeneralSecurityException {
    byte[] data = Base64.getDecoder().decode(stored);
    PKCS8EncodedKeySpec spec = new  PKCS8EncodedKeySpec(data);
    KeyFactory fact = KeyFactory.getInstance("RSA");
    return fact.generatePrivate(spec);
}

public static void main(String[] args) throws Exception {

    Scanner scan = new Scanner(System.in);

    System.out.println("Enter type of operation:");
    String line = scan.nextLine();

    if(line.equals("encrypt")){
        System.out.println("Enter name of original ZIP file:");
        String originalZipFileName = scan.nextLine();

        System.out.println("Enter name of new ZIP file:");
        String newZipFileName = scan.nextLine();

        System.out.println("Enter name of file containg public key:");
        String publicKeyFileName = scan.nextLine();

        encrypt(originalZipFileName, newZipFileName, publicKeyFileName);        
    }
    if(line.equals("decrypt")){
        System.out.println("Enter name of original ZIP file:");
        String originalZipFileName = scan.nextLine();

        System.out.println("Enter name of new ZIP file:");
        String newZipFileName = scan.nextLine();

        System.out.println("Enter name of file containg private key:");
        String privateKeyFileName = scan.nextLine();

        decrypt(originalZipFileName, newZipFileName, privateKeyFileName);       
    }       

}

}