使用BouncyCastle不推荐使用的方法对Paypal按钮进行加密的Java代码-如何解决？

| 我确实一直在努力获取有效的代码，良好的示例，最重要的是，有关如何使用Paypal的Java SDK加密网站付款的良好文档。我已经向Paypal寻求帮助（已发布在他们的论坛上，与支持小组联系），但到目前为止没有得到任何帮助。 我去了https://www.paypal.com/us/cgi-bin/?cmd=p/xcl/rec/ewp-code并下载了Paypal Java SDK。 zip中有一个ReadMe.txt文件，其中包含安装说明。说明很简单。 我去了Bouncy Castle的网站-http://www.bouncycastle.org/latest_releases.html-下载以下罐子的最新版本： bcmail-jdk16-146.jar bcpg-jdk16-146.jar bcprov-jdk16-146.jar bctest-jdk16-146.jar 然后我去http://www.oracle.com/technetwork/java/javase/downloads/index.html下载Java密码学扩展（JCE）无限强度管辖权策略文件。 我将所有JARS放在适当的文件夹中，更新了类路径，然后尝试编译Paypal Java SDK随附的ClientSide.java类。 编译器告诉我有不赞成使用的类，使用-Xlint重新编译后，向我显示了以下错误。 
.\\palmb\\servlets\\paypal\\ClientSide.java:98: warning: [deprecation] addSigner(jav
a.security.PrivateKey,java.security.cert.X509Certi​ficate,java.lang.String) in org.bouncycastle.cms.CMSSignedDataGenerator has been deprecated
                signedGenerator.addSigner( privateKey, certificate, CMSSignedDataGenerator.DIGEST_SHA1 );
                               ^
.\\palmb\\servlets\\paypal\\ClientSide.java:101: warning: [unchecked] unchecked call
 to add(E) as a member of the raw type java.util.ArrayList
                certList.add(certificate);
                            ^
.\\palmb\\servlets\\paypal\\ClientSide.java:103: warning: [deprecation] addCertificatesAndCRLs(java.security.cert.CertStor​e) in org.bouncycastle.cms.CMSSignedGenerator has been deprecated
                signedGenerator.addCertificatesAndCRLs(certStore);
                               ^
.\\palmb\\servlets\\paypal\\ClientSide.java:110: warning: [deprecation] generate(org.bouncycastle.cms.CMSProcessable,boole​an,java.lang.String) in org.bouncycastle.cms.CMSSignedDataGenerator has been deprecated
                CMSSignedData signedData = signedGenerator.generate(cmsByteArray, true, \"BC\");
                                                  ​        ^
.\\palmb\\servlets\\paypal\\ClientSide.java:115: warning: [deprecation] addKeyTransRecipient(java.security.cert.X509Certif​icate) in org.bouncycastle.cms.CMSEnvelopedGenerator has been deprecated  envGenerator.addKeyTransRecipient(payPalCert);
                            ^
.\\palmb\\servlets\\paypal\\ClientSide.java:116: 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 CMSProcessableByteArray(signed),
                                                  ​     ^
6 warnings
我的机器上正在运行Java 1.6。我对Paypal感到失望，因为他们没有提供几乎足够的，易于理解的文档，而且，对于那些需要即用即用设置的人来说，他们的代码不起作用。 我去了Bouncy Castle的网站（www.bouncycastle.org），并简要查看了1.6版的文档（http://www.bouncycastle.org/documentation.html）-但老实说，我不知道如何使用替换不推荐使用的方法。 有人对此Java Paypal代码有经验吗？还是对BouncyCastle及其代码有经验？如果是这样，我非常需要一些帮助。 客户端类别 
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(\',\', \'\\n\');
        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 + \"-----\\n\");
        }

        // 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(\"\\n\");
            i++;
        }
        if (encoded.length() % 64 != 0) {
            writer.print(encoded.substring(i * 64)); // write remainder
            writer.print(\"\\n\");
        }
        if (headfoot != null) {
            writer.print(\"-----END \" + headfoot + \"-----\\n\");
        }
        writer.flush();
        return pemStream.toByteArray();
    }

}
ButtonEncryption类 
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\\nbusiness=buyer@hotmail.com\\nitem_name=vase\\nitemprice=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();
        }
    }
}
 编辑-运行ButtonEncryption类的异常 
C:\\jakarta-tomcat\\webapps\\PlanB\\WEB-INF\\classes>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)
    
2020-02-24 3 条评论
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没有找到相关结果

    已邀请:

    镶骄册筷

            由于没有将JCE文件安装在正确的位置，因此出现了invalidKeySize错误。您的系统上可能有多个JRE。 至于回答有关不推荐使用的功能的问题...我想出了以下替换功能，可以很好地运行PayPal的示例代码（基于bouncycastle javadoc）： 
    private final static String getButtonEncryptionValue(String commandData, String keystorePath,
        String keystorePassword, boolean sandbox) throws IOException, CertificateException, KeyStoreException,
        UnrecoverableKeyException, InvalidAlgorithmParameterException, NoSuchAlgorithmException,
        NoSuchProviderException, CertStoreException, CMSException, OperatorCreationException {

    Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());

    commandData = commandData.replace(\',\', \'\\n\');
    CertificateFactory cf = CertificateFactory.getInstance(\"X509\", \"BC\");

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

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

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

    // Read the Certificate
    X509Certificate certificate = (X509Certificate) cf.generateCertificate(ApplicationProxyService.class
            .getResourceAsStream(\"/myCompanyPublicCert.pem.cer\"));

    // Read the PayPal Cert
    X509Certificate payPalCert = (X509Certificate) cf.generateCertificate(ApplicationProxyService.class
            .getResourceAsStream(\"/paypalPublicCert\" + (sandbox ? \"-sandbox\" : \"\") + \".pem.cer\"));

    // Create the Data
    // System.out.println(commandData);
    byte[] data = commandData.getBytes();

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

    List<X509Certificate> certList = new ArrayList<X509Certificate>();
    certList.add(certificate);

    //deprecated: Store certStore = CertStore.getInstance(\"Collection\", new CollectionCertStoreParameters(certList));
    Store certStore = new JcaCertStore(certList);

    // deprecated: signedGenerator.addCertificatesAndCRLs(certStore);
    signedGenerator.addCertificates(certStore);

    // deprecated: signedGenerator.addSigner(privateKey, certificate, CMSSignedDataGenerator.DIGEST_SHA1);

    ContentSigner sha1Signer = new JcaContentSignerBuilder(\"SHA1withRSA\").setProvider(\"BC\").build(privateKey);
    signedGenerator.addSignerInfoGenerator(new JcaSignerInfoGeneratorBuilder(
            new JcaDigestCalculatorProviderBuilder().setProvider(\"BC\").build()).build(sha1Signer, certificate));

    CMSProcessableByteArray cmsByteArray = new CMSProcessableByteArray(data);
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    cmsByteArray.write(baos);
    LOGGER.debug(\"CMSProcessableByteArray contains [\" + baos.toString() + \"]\");

    // deprecated: CMSSignedData signedData = signedGenerator.generate(cmsByteArray, true, \"BC\");
    CMSSignedData signedData = signedGenerator.generate(cmsByteArray, true);

    byte[] signed = signedData.getEncoded();

    CMSEnvelopedDataGenerator envGenerator = new CMSEnvelopedDataGenerator();

    // deprecated: envGenerator.addKeyTransRecipient(payPalCert);
    envGenerator.addRecipientInfoGenerator(new JceKeyTransRecipientInfoGenerator(payPalCert).setProvider(\"BC\"));

    // deprecated: CMSEnvelopedData envData = envGenerator.generate(new CMSProcessableByteArray(signed),
    // CMSEnvelopedDataGenerator.DES_EDE3_CBC, \"BC\");
    CMSEnvelopedData envData = envGenerator.generate(new CMSProcessableByteArray(signed),
            new JceCMSContentEncryptorBuilder(CMSAlgorithm.DES_EDE3_CBC).setProvider(\"BC\").build());

    byte[] pkcs7Bytes = envData.getEncoded();

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

}
    我还要指出的是，示例DERtoPEM（）函数存在一个缺陷，如果它恰好是64个字符长，则会截断加密值的最后一行（0％64 == 0 AND 64％64 == 0 ）。解决方法如下： 
    private static final byte[] DERtoPEM(byte[] bytes, String headfoot) {

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

    // System.out.println(\"Converting \" + stringBytes.length + \" bytes\");
    StringBuilder sb = new StringBuilder();
    sb.append(\"-----BEGIN \" + headfoot + \"-----\\n\");
    String encoded = new String(stringBytes);
    // write 64 chars per line till done
    int i = 0;
    while ((i + 1) * 64 < encoded.length()) {
        sb.append(encoded.substring(i * 64, (i + 1) * 64));
        sb.append(\"\\n\");
        i++;
    }
    // if (encoded.length() % 64 != 0) { //FIXME (fixed via next line): this is a BUG that drops remaining data if data.length==64!
    String remainder = encoded.substring(i * 64);
    if (StringUtils.isNotEmpty(remainder)) {
        sb.append(remainder); // write remainder
        sb.append(\"\\n\");
    }
    sb.append(\"-----END \" + headfoot + \"-----\\n\");
    return sb.toString().getBytes();

}
        
    2020-02-24 0 0
    分享

    结乳

            无法使Paypal上的类正常工作，因此决定尝试使用Paypal Button API。事实证明，这是最好的方法。我仍然可以使用Java，并让Paypal负责加密按钮。一旦我正确编码了代码，事实证明这是一个简单的过程。 要查看有关Paypal Button API的信息，请单击此处。     
    2020-02-24 0 0
    分享
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