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InvalidKeyException :llicit Key Size - Java Code在加密类别上排出例外——如何固定?

原标题：InvalidKeyException : Illegal Key Size - Java code throwing exception for encryption class - how to fix?

我正在设法获得一些行之有效的 Java代码,用于对Payster纽州进行加密。这并非易事! 甚至在我收到一些法典时,从Palster那里,我会遇到一些错误。

因此,我认为,迄今为止,我将最终工作。

我从Papals网站下载了Java.zip文档。内部有两门课程:客户版。 java

www.un.org/Depts/DGACM/index_spanish.htm 问题—— 页: 1 InvalidKeyException : 非法关键尺寸错误。

Questionswww.un.org/Depts/DGACM/index_spanish.htm 1) How do I resolve this issue? 2) What line of code is throwing the error?

C:jakarta-tomcatwebappsPlanBWEB-INFclasses>java palmb.servlets.paypal.ButtonEncryption
java.io.IOException: exception decrypting data - java.security.InvalidKeyException: Illegal key size
        at org.bouncycastle.jce.provider.JDKPKCS12KeyStore.cryptData(Unknown Source)
        at org.bouncycastle.jce.provider.JDKPKCS12KeyStore.engineLoad(Unknown Source)
        at java.security.KeyStore.load(Unknown Source)
        at palmb.servlets.paypal.ClientSide.getButtonEncryptionValue(ClientSide.java:63)
        at palmb.servlets.paypal.ButtonEncryption.main(ButtonEncryption.java:81)

www.un.org/Depts/DGACM/index_spanish.htm

ClientSide class

package palmb.servlets.paypal;

import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.security.InvalidAlgorithmParameterException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.PrivateKey;
import java.security.UnrecoverableKeyException;
import java.security.cert.CertStore;
import java.security.cert.CertStoreException;
import java.security.cert.CertificateException;
import java.security.cert.CertificateFactory;
import java.security.cert.CollectionCertStoreParameters;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.Enumeration;

import org.bouncycastle.cms.CMSEnvelopedData;
import org.bouncycastle.cms.CMSEnvelopedDataGenerator;
import org.bouncycastle.cms.CMSException;
import org.bouncycastle.cms.CMSProcessableByteArray;
import org.bouncycastle.cms.CMSSignedData;
import org.bouncycastle.cms.CMSSignedDataGenerator;
import org.bouncycastle.openssl.PEMReader;
import org.bouncycastle.util.encoders.Base64;

/**
 */
public class ClientSide 
{
    private String  keyPath;
    private String  certPath;
    private String  paypalCertPath;
    private String  keyPass;

    public ClientSide( String keyPath, String certPath, String paypalCertPath, String keyPass )
    {
        this.keyPath = keyPath;
        this.certPath = certPath;
        this.paypalCertPath = paypalCertPath;
        this.keyPass = keyPass;
    }   

    public String getButtonEncryptionValue(String _data, String _privateKeyPath, String _certPath, String _payPalCertPath,
                                            String _keyPass) throws IOException,CertificateException,KeyStoreException,
                                            UnrecoverableKeyException,InvalidAlgorithmParameterException,NoSuchAlgorithmException,
                                            NoSuchProviderException,CertStoreException,CMSException {
        _data = _data.replace( , ,  
 );
        CertificateFactory cf = CertificateFactory.getInstance("X509", "BC");

        // Read the Private Key
        KeyStore ks = KeyStore.getInstance("PKCS12", "BC");
        ks.load( new FileInputStream(_privateKeyPath), _keyPass.toCharArray() );

        String keyAlias = null;
        Enumeration aliases = ks.aliases();
        while (aliases.hasMoreElements()) {
            keyAlias = (String) aliases.nextElement();
        }

        PrivateKey privateKey = (PrivateKey) ks.getKey( keyAlias, _keyPass.toCharArray() );

        // Read the Certificate
        X509Certificate certificate = (X509Certificate) cf.generateCertificate( new FileInputStream(_certPath) );

        // Read the PayPal Cert
        X509Certificate payPalCert = (X509Certificate) cf.generateCertificate( new FileInputStream(_payPalCertPath) );

        // Create the Data
        byte[] data = _data.getBytes();

        // Sign the Data with my signing only key pair
        CMSSignedDataGenerator signedGenerator = new CMSSignedDataGenerator();

        signedGenerator.addSigner( privateKey, certificate, CMSSignedDataGenerator.DIGEST_SHA1 );

        ArrayList certList = new ArrayList();
        certList.add(certificate);
        CertStore certStore = CertStore.getInstance( "Collection", new CollectionCertStoreParameters(certList) );
        signedGenerator.addCertificatesAndCRLs(certStore);

        CMSProcessableByteArray cmsByteArray = new CMSProcessableByteArray(data);
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        cmsByteArray.write(baos);
        System.out.println( "CMSProcessableByteArray contains [" + baos.toString() + "]" );

        CMSSignedData signedData = signedGenerator.generate(cmsByteArray, true, "BC");

        byte[] signed = signedData.getEncoded();

        CMSEnvelopedDataGenerator envGenerator = new CMSEnvelopedDataGenerator();
        envGenerator.addKeyTransRecipient(payPalCert);
        CMSEnvelopedData envData = envGenerator.generate( new CMSProcessableByteArray(signed),
                CMSEnvelopedDataGenerator.DES_EDE3_CBC, "BC" );

        byte[] pkcs7Bytes = envData.getEncoded();


        return new String( DERtoPEM(pkcs7Bytes, "PKCS7") );

    }

    public static byte[] DERtoPEM(byte[] bytes, String headfoot) 
    {
        ByteArrayOutputStream pemStream = new ByteArrayOutputStream();
        PrintWriter writer = new PrintWriter(pemStream);

        byte[] stringBytes = Base64.encode(bytes);

        System.out.println("Converting " + stringBytes.length + " bytes");

        String encoded = new String(stringBytes);

        if (headfoot != null) {
            writer.print("-----BEGIN " + headfoot + "-----
");
        }

        // write 64 chars per line till done
        int i = 0;
        while ((i + 1) * 64 < encoded.length()) {
            writer.print(encoded.substring(i * 64, (i + 1) * 64));
            writer.print("
");
            i++;
        }
        if (encoded.length() % 64 != 0) {
            writer.print(encoded.substring(i * 64)); // write remainder
            writer.print("
");
        }
        if (headfoot != null) {
            writer.print("-----END " + headfoot + "-----
");
        }
        writer.flush();
        return pemStream.toByteArray();
    }

}

www.un.org/Depts/DGACM/index_spanish.htm

ButtonEncryption class

package palmb.servlets.paypal;

//import com.paypal.crypto.sample.*;

import palmb.servlets.paypal.ClientSide;

import java.io.*;
import java.security.InvalidAlgorithmParameterException;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.Security;
import java.security.UnrecoverableKeyException;
import java.security.cert.CertStoreException;
import java.security.cert.CertificateException;
import org.bouncycastle.cms.CMSException;

/**
 */
public class ButtonEncryption {


    //path to public cert
    private static String certPath = "C:/jakarta-tomcat/webapps/PlanB/Certs/public-cert.pem";

    //path to private key in PKCS12 format
    private static String keyPath = "C:/jakarta-tomcat/webapps/PlanB/Certs/my_pkcs12.p12";

    //path to Paypal s public cert
    private static String paypalCertPath = "C:/jakarta-tomcat/webapps/PlanB/Certs/paypal_cert_pem.txt";

    //private key password
    private static String keyPass = "password"; //will be replaced with actual password when compiled and executed

    //the button command, properties/parameters
    private static String cmdText = "cmd=_xclick
business=buyer@hotmail.com
item_name=vase
itemprice=25.00";  //cmd=_xclick,business=sample@paypal.com,amount=1.00,currency_code=USD

    //output file for form code
    private static String output = "test.html";


    public static void main(String[] args) 
    {
        Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()); 


        String stage = "sandbox";

        try 
        {
            ClientSide client_side = new ClientSide( keyPath, certPath, paypalCertPath, keyPass );

            String result = client_side.getButtonEncryptionValue( cmdText, keyPath, certPath, paypalCertPath, keyPass );

            File outputFile = new File( output );
            if ( outputFile.exists() )
                outputFile.delete();

            if ( result != null && result != "")
            {
                try {        
                    OutputStream fout= new FileOutputStream( output );
                    OutputStream bout= new BufferedOutputStream(fout);
                    OutputStreamWriter out = new OutputStreamWriter(bout, "US-ASCII");

                    out.write( "<form action="https://www." );
                    out.write( stage );
                    out.write( "paypal.com/cgi-bin/webscr" method="post">" );  
                    out.write( "<input type="hidden" name="cmd" value="_s-xclick">" );  ;
                    out.write( "<input type="image" src="https://www." );
                    out.write( stage );
                    out.write( "paypal.com/en_US/i/btn/x-click-but23.gif" border="0" name="submit" " );
                    out.write( "alt="Make payments with PayPal - it s fast, free and secure!">" );
                    out.write( "<input type="hidden" name="encrypted" value="" );
                    out.write( result );
                    out.write( "">" );
                    out.write( "</form>");

                    out.flush();  // Don t forget to flush!
                    out.close();
                  }
                  catch (UnsupportedEncodingException e) {
                    System.out.println(
                     "This VM does not support the ASCII character set."
                    );
                  }
                  catch (IOException e) {
                    System.out.println(e.getMessage());        
                  }
            }
        } 
        catch (NoSuchAlgorithmException e) 
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } 
        catch (NoSuchProviderException e) 
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } 
        catch (IOException e) 
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } 
        catch (CMSException e) 
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } 
        catch (CertificateException e) 
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } 
        catch (KeyStoreException e) 
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } 
        catch (UnrecoverableKeyException e) 
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } 
        catch (InvalidAlgorithmParameterException e) 
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } 
        catch (CertStoreException e) 
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}

www.un.org/Depts/DGACM/index_spanish.htm

Edited : info about keys/certificates

I generated the Private Key and Public Certificate with OpenSSL via the following commands. www.un.org/Depts/DGACM/index_spanish.htm Private Keywww.un.org/Depts/DGACM/index_spanish.htm openssl genrsa -out private-key.pem 1024 www.un.org/Depts/DGACM/index_spanish.htm Public Certificate www.un.org/Depts/DGACM/index_spanish.htmopenssl req -new -key private-key.pem -x509 -days 1095 -out public-cert.pem www.un.org/Depts/DGACM/index_spanish.htm Created PKCS12 Filewww.un.org/Depts/DGACM/index_spanish.htm openssl pkcs12 -export -in public-cert.pem -inkey private-key.pem -out my_pkcs12.p12

www.un.org/Depts/DGACM/index_spanish.htm Additionally, I had to download the Paypal Public Certificate from the Paypal website.

www.un.org/Depts/DGACM/index_spanish.htm

Edited - adding compilation warnings - BouncyCastle

C:jakarta-tomcatwebappsPlanBWEB-INFclasses>javac .palmbservletspaypalClientSide.java -Xlint
.palmbservletspaypalClientSide.java:85: warning: [deprecation] addSigner(java.security.PrivateKey,java.security.cert.X509Certificate,java.lang.String) in org.bouncycastle.cms.CMSSignedDataGenerator has been deprecated
                signedGenerator.addSigner( privateKey, certificate, CMSSignedDat
aGenerator.DIGEST_SHA1 );
                               ^
.palmbservletspaypalClientSide.java:88: warning: [unchecked] unchecked call
to add(E) as a member of the raw type java.util.ArrayList
                certList.add(certificate);
                            ^
.palmbservletspaypalClientSide.java:90: warning: [deprecation] addCertificatesAndCRLs(java.security.cert.CertStore) in org.bouncycastle.cms.CMSSignedGenerat
or has been deprecated
                signedGenerator.addCertificatesAndCRLs(certStore);
                               ^
.palmbservletspaypalClientSide.java:97: warning: [deprecation] generate(org.
bouncycastle.cms.CMSProcessable,boolean,java.lang.String) in org.bouncycastle.cm
s.CMSSignedDataGenerator has been deprecated
                CMSSignedData signedData = signedGenerator.generate(cmsByteArray, true, "BC");
                                                          ^
.palmbservletspaypalClientSide.java:102: warning: [deprecation] addKeyTransR
ecipient(java.security.cert.X509Certificate) in org.bouncycastle.cms.CMSEnvelope
dGenerator has been deprecated
                envGenerator.addKeyTransRecipient(payPalCert);
                            ^
.palmbservletspaypalClientSide.java:103: warning: [deprecation] generate(org.bouncycastle.cms.CMSProcessable,java.lang.String,java.lang.String) in org.bouncycastle.cms.CMSEnvelopedDataGenerator has been deprecated
                CMSEnvelopedData envData = envGenerator.generate( new CMSProcess
ableByteArray(signed),
                                                       ^
6 warnings

www.un.org/Depts/DGACM/index_spanish.htm

JCE policy file installation steps

These are the steps I took to installing the JCE Unlimited Strength Policy files:www.un.org/Depts/DGACM/index_spanish.htm 1) Went to Java JCE Download Page on Oracle.www.un.org/Depts/DGACM/index_spanish.htm 2) Extracted files from zip.www.un.org/Depts/DGACM/index_spanish.htm 3) Placed local_policy.jar and US_export_policy.jar files in C:Javajdk1.6.0_22jrelibsecurity folder. www.un.org/Depts/DGACM/index_spanish.htm Note: C:Javajdk1.6.0_22 is set as %JAVA_HOME% www.un.org/Depts/DGACM/index_spanish.htm 4) Updated system classpath to include location of jars. www.un.org/Depts/DGACM/index_spanish.htm Note: There are other files, that came with the JDK 1.6 within the security folder, including : java.policy, java.security, javaws.policy, trusted.libraries - but those probably have nothing to do with the JCE files, right? www.un.org/Depts/DGACM/index_spanish.htm

Edit 6/23/2011 - results after further configuration

I went to Bouncy Castle page at http://www.bouncycastle.org/specifications.html#installwww.un.org/Depts/DGACM/index_spanish.htm Scroll down to 5.0 Bouncy Castle Provider then read info under 5.1 Example. It makes mention of adding a parameter for the Bouncy Castle Provider to the java.security file. My file is under C:Javajdk1.6.0_22jrelibsecurity.www.un.org/Depts/DGACM/index_spanish.htmwww.un.org/Depts/DGACM/index_spanish.htm I added the following line to my file - security.provider.10=org.bouncycastle.jce.provider.BouncyCastleProvider www.un.org/Depts/DGACM/index_spanish.htm

In addition, I discovered that I hadn t added the Bouncy Castle jars to the classpath, so I went ahead and did so. www.un.org/Depts/DGACM/index_spanish.htm

Now after making these changes, recompiling and attempting to execute ClientSide.java I m given the same exception : but maybe the focus should be on the part of the exception where it says this about bouncycastle provider -

at org.bouncycastle.jce.provider.JDKPKCS12KeyStore.cryptData(Unknown Source)
at org.bouncycastle.jce.provider.JDKPKCS12KeyStore.engineLoad(Unknown Source)

<>0> PeteyB——我确信,我正确地安装了政策档案。根据我在这里所说的话,你能否建议我尝试什么? http://www.bouncy城堡.org/specifications.html#install”rel=“noreferer” http://www.bouncy城堡.org/specifications.html#install。并且看是否有一米失踪?

最佳回答

因此,问题必须在于您的法国航天中心无限制地安装了强力。

兹确保你在以下两条文本中标出:www.c.org/p.htm。

在我的案件中,我将把新的支柱放在:

C:Program FilesJavajdk1.6.0_25jrelibsecurity

以及

<代码>C:Program filesJavajre6libsecurity

If you are running Java 8 以及 you encounter this issue. Below steps should help!

Go to your JRE installation (e.g - jre1.8.0_181libsecuritypolicyunlimited) copy local_policy.jar 以及 replace it with local_policy.jar in your JDK installation directory (e.g - jdk1.8.0_141jrelibsecurity).

问题回答

If you are still recieving the InvalidKeyException when running my AES encryption program with 256 bit keys, but not with 128 bit keys, it is because you have not installed the new policy JAR files correctly, and has nothing to do with BouncyCastle (which is also restrained by those policy files). Try uninstalling, then re-installing java and then replaceing the old jar s with the new unlimited strength ones. Other than that, I m out of ideas, best of luck.

如果你打开了平衡/安全/当地政策.jar和美国_export_policy.jar文档,看看一看一看一看一栏中的政策档案,并确保它们这样做:

default_local.policy:

    // Country-specific policy file for countries with no limits on crypto strength.
grant {
    // There is no restriction to any algorithms.
    permission javax.crypto.CryptoAllPermission; 
};

违约_US_export.policy:

// Manufacturing policy file.
grant {
    // There is no restriction to any algorithms.
    permission javax.crypto.CryptoAllPermission; 
};

添加以下文字:

static {
    Security.insertProviderAt(new BouncyCastleProvider(),1);
 }

因此没有必要在java加入任何条目。安全档案。

The error seems to be thrown when you try and load they keystore from "C:/jakarta-tomcat/webapps/PlanB/Certs/my_pkcs12.p12" here:

ks.load( new FileInputStream(_privateKeyPath), _keyPass.toCharArray() );

Have you tried replaceing "/" with "\" in your file path? If that doesn t help it probably has to do with Java s Unlimited Strength Jurisdiction Policy Files. You could check this by writing a little program that does AES encryption. Try encrypting with a 128 bit key, then if that works, try with a 256 bit key and see if it fails.

Code that does AES encyrption:

import java.io.UnsupportedEncodingException;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;

import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;

public class Test 
{
    final String ALGORITHM = "AES";                       //symmetric algorithm for data encryption
    final String PADDING_MODE = "/CBC/PKCS5Padding";      //Padding for symmetric algorithm
    final String CHAR_ENCODING = "UTF-8";                 //character encoding
    //final String CRYPTO_PROVIDER = "SunMSCAPI";             //provider for the crypto

    int AES_KEY_SIZE = 256;  //symmetric key size (128, 192, 256) if using 256 you must have the Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files  installed

    private String doCrypto(String plainText) throws NoSuchAlgorithmException, NoSuchProviderException, NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException, InvalidAlgorithmParameterException, UnsupportedEncodingException
    {
        byte[] dataToEncrypt = plainText.getBytes(CHAR_ENCODING);

        //get the symmetric key generator
        KeyGenerator keyGen = KeyGenerator.getInstance(ALGORITHM);
        keyGen.init(AES_KEY_SIZE); //set the key size

        //generate the key
        SecretKey skey = keyGen.generateKey();

        //convert to binary
        byte[] rawAesKey = skey.getEncoded();

        //initialize the secret key with the appropriate algorithm
        SecretKeySpec skeySpec = new SecretKeySpec(rawAesKey, ALGORITHM);

        //get an instance of the symmetric cipher
        Cipher aesCipher = Cipher.getInstance(ALGORITHM + PADDING_MODE);

        //set it to encrypt mode, with the generated key
        aesCipher.init(Cipher.ENCRYPT_MODE, skeySpec);

        //get the initialization vector being used (to be returned)
        byte[] aesIV = aesCipher.getIV();

        //encrypt the data
        byte[] encryptedData = aesCipher.doFinal(dataToEncrypt);    

        //initialize the secret key with the appropriate algorithm
        SecretKeySpec skeySpecDec = new SecretKeySpec(rawAesKey, ALGORITHM);

        //get an instance of the symmetric cipher
        Cipher aesCipherDec = Cipher.getInstance(ALGORITHM +PADDING_MODE);

        //set it to decrypt mode with the AES key, and IV
        aesCipherDec.init(Cipher.DECRYPT_MODE, skeySpecDec, new IvParameterSpec(aesIV));

        //decrypt and return the data
        byte[] decryptedData = aesCipherDec.doFinal(encryptedData);

        return new String(decryptedData, CHAR_ENCODING);
    }

    public static void main(String[] args)
    {
        String text = "Lets encrypt me";

        Test test = new Test();

        try {
            System.out.println(test.doCrypto(text));
        } catch (InvalidKeyException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (NoSuchAlgorithmException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (NoSuchProviderException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (NoSuchPaddingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IllegalBlockSizeException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (BadPaddingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (InvalidAlgorithmParameterException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}

Does this code work for you?

You might also want to try specifying your bouncy castle provider in this line:

Cipher.getInstance(ALGORITHM +PADDING_MODE, "YOUR PROVIDER");

并且看它是否可能是与公墓有关的错误。

我也面临同样的问题。添加“US_export_policy.jar和 local_policy.jar,首先列入“java”安全夹,但问题依然存在。随后在<代码>java_opts内添加如下内容:setenv.shfile,并使用。

-Djdk.tls.ephemeralDHKeySize=2048

Please check this link for further info

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