半步多 玄玉的博客

SSL证书的PKIX问题

2012-07-29
玄玉

前几天测试服务器遇到了这么个异常

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed:
sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

就是说找不着安全证书啥的等等,烂码七糟的一大堆

接着就拜Google大神,发现一篇文章能被N个人转来转去的,关键文章还不怎么靠谱

后来找到了一个办法,幸运的是在测试环境一弄,这个问题看上去就被解决了

现在要是再遇到这个问题,我会用我的HttpUtil工具类去处理

那么,我们要做的就是将所要访问的URL的安全认证证书导入到客户端

下面这个InstallCert.java是获取安全证书的一种方法(或者说一个工具)

/*
 * Copyright 2006 Sun Microsystems, Inc.  All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Sun Microsystems nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.security.KeyStore;
import java.security.MessageDigest;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;
import javax.net.ssl.X509TrustManager;

public class InstallCert {
    public static void main(String[] args) throws Exception {
        String host;
        int port;
        char[] passphrase;
        if ((args.length == 1) || (args.length == 2)) {
            String[] c = args[0].split(":");
            host = c[0];
            port = (c.length == 1) ? 443 : Integer.parseInt(c[1]);
            String p = (args.length == 1) ? "changeit" : args[1];
            passphrase = p.toCharArray();
        } else {
            System.out.println("Usage: java InstallCert <host>[:port] [passphrase]");
            return;
        }

        File file = new File("jssecacerts");
        if (file.isFile() == false) {
            char SEP = File.separatorChar;
            File dir = new File(System.getProperty("java.home") + SEP + "lib" + SEP + "security");
            file = new File(dir, "jssecacerts");
            if (file.isFile() == false) {
                file = new File(dir, "cacerts");
            }
        }

        System.out.println("Loading KeyStore " + file + "...");
        InputStream in = new FileInputStream(file);
        KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
        ks.load(in, passphrase);
        in.close();

        SSLContext context = SSLContext.getInstance("TLS");
        TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
        tmf.init(ks);
        X509TrustManager defaultTrustManager = (X509TrustManager) tmf.getTrustManagers()[0];
        SavingTrustManager tm = new SavingTrustManager(defaultTrustManager);
        context.init(null, new TrustManager[]{tm}, null);
        SSLSocketFactory factory = context.getSocketFactory();

        System.out.println("Opening connection to " + host + ":" + port + "...");
        SSLSocket socket = (SSLSocket) factory.createSocket(host, port);
        socket.setSoTimeout(10000);
        try {
            System.out.println("Starting SSL handshake...");
            socket.startHandshake();
            socket.close();
            System.out.println();
            System.out.println("No errors, certificate is already trusted");
        } catch (SSLException e) {
            System.out.println();
            e.printStackTrace(System.out);
        }

        X509Certificate[] chain = tm.chain;
        if (chain == null) {
            System.out.println("Could not obtain server certificate chain");
            return;
        }

        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

        System.out.println();
        System.out.println("Server sent " + chain.length + " certificate(s):");
        System.out.println();
        MessageDigest sha1 = MessageDigest.getInstance("SHA1");
        MessageDigest md5 = MessageDigest.getInstance("MD5");
        for (int i = 0; i < chain.length; i++) {
            X509Certificate cert = chain[i];
            System.out.println(" " + (i + 1) + " Subject " + cert.getSubjectDN());
            System.out.println("   Issuer  " + cert.getIssuerDN());
            sha1.update(cert.getEncoded());
            System.out.println("   sha1    " + toHexString(sha1.digest()));
            md5.update(cert.getEncoded());
            System.out.println("   md5     " + toHexString(md5.digest()));
            System.out.println();
        }

        System.out.println("Enter certificate to add to trusted keystore or 'q' to quit: [1]");
        String line = reader.readLine().trim();
        int k;
        try {
            k = (line.length() == 0) ? 0 : Integer.parseInt(line) - 1;
        } catch (NumberFormatException e) {
            System.out.println("KeyStore not changed");
            return;
        }

        X509Certificate cert = chain[k];
        String alias = host + "-" + (k + 1);
        ks.setCertificateEntry(alias, cert);

        OutputStream out = new FileOutputStream("jssecacerts");
        ks.store(out, passphrase);
        out.close();

        System.out.println();
        System.out.println(cert);
        System.out.println();
        System.out.println("Added certificate to keystore 'jssecacerts' using alias '" + alias + "'");
    }


    private static final char[] HEXDIGITS = "0123456789abcdef".toCharArray();


    private static String toHexString(byte[] bytes) {
        StringBuilder sb = new StringBuilder(bytes.length * 3);
        for (int b : bytes) {
            b &= 0xff;
            sb.append(HEXDIGITS[b >> 4]);
            sb.append(HEXDIGITS[b & 15]);
            sb.append(' ');
        }
        return sb.toString();
    }


    private static class SavingTrustManager implements X509TrustManager {
        private final X509TrustManager tm;
        private X509Certificate[] chain;

        SavingTrustManager(X509TrustManager tm) {
            this.tm = tm;
        }

        public X509Certificate[] getAcceptedIssuers() {
            throw new UnsupportedOperationException();
        }

        public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
            throw new UnsupportedOperationException();
        }

        public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
            this.chain = chain;
            tm.checkServerTrusted(chain, authType);
        }
    }
}

接下来编译InstallCert.java,得到两个class文件,并执行InstallCert类

执行方式:java InstallCert hostname

比如:java InstallCert www.cebbank.com,接下来会看到下面的打印信息

java InstallCert www.cebbank.com
Loading KeyStore /usr/java/jdk1.6.0_31/jre/lib/security/cacerts...
Opening connection to www.cebbank.com:443...
Starting SSL handshake...

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed:
sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
    at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Alerts.java:174)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1731)
    at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:241)
    at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:235)
    at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1206)
    at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:136)
    at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Handshaker.java:593)
    at com.sun.net.ssl.internal.ssl.Handshaker.process_record(Handshaker.java:529)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:925)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1170)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1197)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1181)
    at InstallCert.main(InstallCert.java:102)
Caused by: sun.security.validator.ValidatorException: PKIX path building failed:
sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
    at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:323)
    at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:217)
    at sun.security.validator.Validator.validate(Validator.java:218)
    at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:126)
    at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:209)
    at InstallCert$SavingTrustManager.checkServerTrusted(InstallCert.java:198)
    at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1198)
    ... 8 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
    at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:174)
    at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:238)
    at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:318)
    ... 14 more

Server sent 1 certificate(s):

 1 Subject CN=www.cebbank.com, OU=Terms of use at www.verisign.com/rpa (c)05, OU=CEB, O="China Everbright Bank Co., Ltd", L=Beijing
   Issuer  CN=VeriSign Class 3 Extended Validation SSL CA, OU=Terms of use at https://www.verisign.com/rpa (c)06, OU=VeriSign Trust Network
   sha1    5b d2 85 6e b3 a4 2b 07 a2 13 47 b3 be 3e 1f c9 d3 ce 46 57
   md5     05 d8 ae ee f1 d9 51 63 6d 2f 11 e0 ac d0 e7 d7

Enter certificate to add to trusted keystore or 'q' to quit: [1]

然后输入1并回车,会看到类似下面的打印信息

[
[
  Version: V3
  Subject: CN=www.cebbank.com, OU=Terms of use at www.verisign.com/rpa (c)05, OU=CEB, O="China Everbright Bank Co., Ltd", L=Beijing
  Signature Algorithm: SHA1withRSA, OID = 1.2.840.113549.1.1.5

  Key:  Sun RSA public key, 2048 bits
  modulus: 30831246384548809540705228292841393062583732250993909916355780413722161557074568469738254573472093341710481517139910877
  public exponent: 65537
  Validity: [From: Mon Jul 02 08:00:00 CST 2012,
               To: Thu Jul 03 07:59:59 CST 2014]
  Issuer: CN=VeriSign Class 3 Extended Validation SSL CA, OU=Terms of use at https://www.verisign.com/rpa (c)06, OU=VeriSign Trust Network
  SerialNumber: [    5715ab25 6be8fa42 2fa28dd4 601bc732]

Certificate Extensions: 9
[1]: ObjectId: 1.3.6.1.5.5.7.1.1 Criticality=false
AuthorityInfoAccess [
  [
   accessMethod: 1.3.6.1.5.5.7.48.1
   accessLocation: URIName: http://ocsp.verisign.com,
   accessMethod: 1.3.6.1.5.5.7.48.2
   accessLocation: URIName: http://EVSecure-aia.verisign.com/EVSecure2006.cer]
]

[2]: ObjectId: 2.5.29.17 Criticality=false
SubjectAlternativeName [
  DNSName: www.cebbank.com
]

[3]: ObjectId: 2.5.29.35 Criticality=false
AuthorityKeyIdentifier [
KeyIdentifier [
0000: FC 8A 50 BA 9E B9 25 5A   7B 55 85 4F 95 00 63 8F  ..P...%Z.U.O..c.
0010: E9 58 6B 43                                        .XkC
]

]

[4]: ObjectId: 2.5.29.32 Criticality=false
CertificatePolicies [
  [CertificatePolicyId: [2.16.840.1.113733.1.7.23.6]
[PolicyQualifierInfo: [
  qualifierID: 1.3.6.1.5.5.7.2.1
  qualifier: 0000: 16 1C 68 74 74 70 73 3A   2F 2F 77 77 77 2E 76 65  ..https://www.ve
0010: 72 69 73 69 67 6E 2E 63   6F 6D 2F 63 70 73        risign.com/cps

]]  ]
]

[5]: ObjectId: 2.5.29.19 Criticality=false
BasicConstraints:[
  CA:false
  PathLen: undefined
]

[6]: ObjectId: 1.3.6.1.5.5.7.1.12 Criticality=false
Extension unknown: DER encoded OCTET string =
0000: 04 62 30 60 A1 5E A0 5C   30 5A 30 58 30 56 16 09  .b0`.^.\0Z0X0V..
0010: 69 6D 61 67 65 2F 67 69   66 30 21 30 1F 30 07 06  image/gif0!0.0..
0020: 05 2B 0E 03 02 1A 04 14   4B 6B B9 28 96 06 0C BB  .+......Kk.(....
0030: D0 52 38 9B 29 AC 4B 07   8B 21 05 18 30 26 16 24  .R8.).K..!..0&.$
0040: 68 74 74 70 3A 2F 2F 6C   6F 67 6F 2E 76 65 72 69  http://logo.veri
0050: 73 69 67 6E 2E 63 6F 6D   2F 76 73 6C 6F 67 6F 31  sign.com/vslogo1
0060: 2E 67 69 66                                        .gif


[7]: ObjectId: 2.5.29.37 Criticality=false
ExtendedKeyUsages [
  serverAuth
  clientAuth
]

[8]: ObjectId: 2.5.29.31 Criticality=false
CRLDistributionPoints [
  [DistributionPoint:
     [URIName: http://EVSecure-crl.verisign.com/EVSecure2006.crl]
]]

[9]: ObjectId: 2.5.29.15 Criticality=false
KeyUsage [
  DigitalSignature
  Key_Encipherment
]

]
  Algorithm: [SHA1withRSA]
  Signature:
0000: 42 0A 89 BF 48 08 1E F4   98 F2 E5 DB 0D 83 EF 37  B...H..........7
0010: EC 27 6F 4D 81 69 C6 4A   4C 17 EC 57 F5 48 2A 14  .'oM.i.JL..W.H*.
0020: 3C 54 B2 C5 49 39 42 BA   EC 83 78 02 F9 96 6C 63  <T..I9B...x...lc
0030: 80 BC 60 61 BB 20 D1 AD   C3 D3 76 47 6F 0C 7B AC  ..`a. ....vGo...
0040: 76 B2 C7 2D B1 0A 7A 00   CA 40 38 86 FF 9F 12 F5  v..-..z..@8.....
0050: BE 5A E7 42 97 2F DF DE   0C 19 C5 F6 92 58 17 7A  .Z.B./.......X.z
0060: 9A 1D 2C 2C DA 8B 83 83   2D BE 07 58 56 36 92 E7  ..,,....-..XV6..
0070: B1 F8 A0 B5 00 F4 C3 30   D1 34 37 3D 94 75 28 04  .......0.47=.u(.
0080: A2 D8 C3 FE B1 E1 C2 2E   51 A8 6F D5 09 6D 49 DB  ........Q.o..mI.
0090: 2E 1D 4B F7 A8 06 30 B4   97 E7 C2 33 26 FD 6A DF  ..K...0....3&.j.
00A0: D6 B0 10 A1 F2 73 DD 5A   60 DE 51 5E EA 80 46 86  .....s.Z`.Q^..F.
00B0: 25 0B 53 FC C2 57 80 35   09 2D 31 55 28 35 EE 0F  %.S..W.5.-1U(5..
00C0: 62 50 4B 12 75 0B 02 9F   2F 0B D2 8A 0D 23 E3 C1  bPK.u.../....#..
00D0: 48 28 56 33 E1 DE 31 DD   72 78 15 96 EE 2B A5 1D  H(V3..1.rx...+..
00E0: 37 85 1B E5 88 53 80 88   02 6D 90 F3 E6 4A 74 AC  7....S...m...Jt.
00F0: D2 CA 0E 04 BC 46 A0 57   34 FA CF 9D E5 D7 0E 4B  .....F.W4......K

]

Added certificate to keystore 'jssecacerts' using alias 'www.cebbank.com-1'

同时当前目录下会自动生成一个名为jssecacerts的证书

再把它拷贝到\\%JAVA_HONME%\\jre\\lib\\security\\

最后重启应用,证书就生效了

  • 补充

    有人说生成证书后不用拷贝,直接加句代码就行,结果试了下不管用,不知道是不是我的姿势不对
    System.setProperty("javax.net.ssl.trustStore", "jssecacerts证书路径");


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