Java example source code file (DHEKeySizing.java)
The DHEKeySizing.java Java example source code/*
* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
//
// SunJSSE does not support dynamic system properties, no way to re-use
// system properties in samevm/agentvm mode.
//
/*
* @test
* @bug 6956398
* @summary make ephemeral DH key match the length of the certificate key
* @run main/othervm
* DHEKeySizing SSL_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA true 1318 75
* @run main/othervm -Djdk.tls.ephemeralDHKeySize=matched
* DHEKeySizing SSL_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA true 1318 75
* @run main/othervm -Djdk.tls.ephemeralDHKeySize=legacy
* DHEKeySizing SSL_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA true 1318 75
* @run main/othervm -Djdk.tls.ephemeralDHKeySize=1024
* DHEKeySizing SSL_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA true 1318 75
*
* @run main/othervm
* DHEKeySizing SSL_DH_anon_EXPORT_WITH_DES40_CBC_SHA true 292 75
*
* @run main/othervm
* DHEKeySizing TLS_DHE_RSA_WITH_AES_128_CBC_SHA false 1510 139
* @run main/othervm -Djdk.tls.ephemeralDHKeySize=legacy
* DHEKeySizing TLS_DHE_RSA_WITH_AES_128_CBC_SHA false 1414 107
* @run main/othervm -Djdk.tls.ephemeralDHKeySize=matched
* DHEKeySizing TLS_DHE_RSA_WITH_AES_128_CBC_SHA false 1894 267
* @run main/othervm -Djdk.tls.ephemeralDHKeySize=1024
* DHEKeySizing TLS_DHE_RSA_WITH_AES_128_CBC_SHA false 1510 139
*
* @run main/othervm
* DHEKeySizing SSL_DH_anon_WITH_RC4_128_MD5 false 484 139
* @run main/othervm -Djdk.tls.ephemeralDHKeySize=legacy
* DHEKeySizing SSL_DH_anon_WITH_RC4_128_MD5 false 388 107
* @run main/othervm -Djdk.tls.ephemeralDHKeySize=matched
* DHEKeySizing SSL_DH_anon_WITH_RC4_128_MD5 false 484 139
* @run main/othervm -Djdk.tls.ephemeralDHKeySize=1024
* DHEKeySizing SSL_DH_anon_WITH_RC4_128_MD5 false 484 139
*/
/*
* This is a simple hack to test key sizes of Diffie-Hellman key exchanging
* during SSL/TLS handshaking.
*
* The record length of DH ServerKeyExchange and ClientKeyExchange.
* ServerKeyExchange message are wrapped in ServerHello series messages, which
* contains ServerHello, Certificate and ServerKeyExchange message.
*
* struct {
* opaque dh_p<1..2^16-1>;
* opaque dh_g<1..2^16-1>;
* opaque dh_Ys<1..2^16-1>;
* } ServerDHParams; // Ephemeral DH parameters
*
* struct {
* select (PublicValueEncoding) {
* case implicit: struct { };
* case explicit: opaque dh_Yc<1..2^16-1>;
* } dh_public;
* } ClientDiffieHellmanPublic;
*
* Fomr above structures, it is clear that if the DH key size increasing 128
* bits (16 bytes), the ServerHello series messages increases 48 bytes
* (becuase dh_p, dh_g and dh_Ys each increase 16 bytes) and ClientKeyExchange
* increases 16 bytes (because of the size increasing of dh_Yc).
*
* Here is a summary of the record length in the test case.
*
* | ServerHello Series | ClientKeyExchange | ServerHello Anon
* 512-bit | 1318 bytes | 75 bytes | 292 bytes
* 768-bit | 1414 bytes | 107 bytes | 388 bytes
* 1024-bit | 1510 bytes | 139 bytes | 484 bytes
* 2048-bit | 1894 bytes | 267 bytes | 484 bytes
*/
import javax.net.ssl.*;
import javax.net.ssl.SSLEngineResult.*;
import java.io.*;
import java.nio.*;
import java.security.KeyStore;
import java.security.KeyFactory;
import java.security.cert.Certificate;
import java.security.cert.CertificateFactory;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.*;
import java.security.interfaces.*;
import java.util.Base64;
public class DHEKeySizing {
private final static boolean debug = true;
// key length bias because of the stripping of leading zero bytes of
// negotiated DH keys.
//
// This is an effort to mimum intermittent failure when we cannot
// estimate what's the exact number of leading zero bytes of
// negotiated DH keys.
private final static int KEY_LEN_BIAS = 6;
private SSLContext sslc;
private SSLEngine ssle1; // client
private SSLEngine ssle2; // server
private ByteBuffer appOut1; // write side of ssle1
private ByteBuffer appIn1; // read side of ssle1
private ByteBuffer appOut2; // write side of ssle2
private ByteBuffer appIn2; // read side of ssle2
private ByteBuffer oneToTwo; // "reliable" transport ssle1->ssle2
private ByteBuffer twoToOne; // "reliable" transport ssle2->ssle1
/*
* Where do we find the keystores?
*/
// Certificates and key used in the test.
static String trustedCertStr =
"-----BEGIN CERTIFICATE-----\n" +
"MIIC8jCCAdqgAwIBAgIEUjkuRzANBgkqhkiG9w0BAQUFADA7MR0wGwYDVQQLExRT\n" +
"dW5KU1NFIFRlc3QgU2VyaXZjZTENMAsGA1UEChMESmF2YTELMAkGA1UEBhMCVVMw\n" +
"HhcNMTMwOTE4MDQzODMxWhcNMTMxMjE3MDQzODMxWjA7MR0wGwYDVQQLExRTdW5K\n" +
"U1NFIFRlc3QgU2VyaXZjZTENMAsGA1UEChMESmF2YTELMAkGA1UEBhMCVVMwggEi\n" +
"MA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCO+IGeaskJAvEcYc7pCl9neK3E\n" +
"a28fwWLtChufYNaC9hQfZlUdETWYjV7fZJVJKT/oLzdDNMWuVA0LKXArpI3thLNK\n" +
"QLXisdF9hKPlZRDazACL9kWUUtJ0FzpEySK4e8wW/z9FuU6e6iO19FbjxAfInJqk\n" +
"3EDiEhB5g73S2vtvPCxgq2DvWw9TDl/LIqdKG2JCS93koXCCaHmQ7MrIOqHPd+8r\n" +
"RbGpatXT9qyHKppUv9ATxVygO4rA794mgCFxpT+fkhz+NEB0twTkM65T1hnnOv5n\n" +
"ZIxkcjBggt85UlZtnP3b9P7SYxsWIa46Oc38Od2f3YejfVg6B+PqPgWNl3+/AgMB\n" +
"AAEwDQYJKoZIhvcNAQEFBQADggEBAAlrP6DFLRPSy0IgQhcI2i56tR/na8pezSte\n" +
"ZHcCdaCZPDy4UP8mpLJ9QCjEB5VJv8hPm4xdK7ULnKGOGHgYqDpV2ZHvQlhV1woQ\n" +
"TZGb/LM3c6kAs0j4j9KM2fq3iYUYexjIkS1KzsziflxMM6igS9BRMBR2LQyU+cYq\n" +
"YEsFzkF7Aj2ET4v/+tgot9mRr2NioJcaJkdsPDpMU3IKB1cczfu+OuLQ/GCG0Fqu\n" +
"6ijCeCqfnaAbemHbJeVZZ6Qgka3uC2YMntLBmLkhqEo1d9zGYLoh7oWL77y5ibQZ\n" +
"LK5/H/zikcu579TWjlDHcqL3arCwBcrtsjSaPrRSWMrWV/6c0qw=\n" +
"-----END CERTIFICATE-----";
// Private key in the format of PKCS#8
static String targetPrivateKey =
"MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQCO+IGeaskJAvEc\n" +
"Yc7pCl9neK3Ea28fwWLtChufYNaC9hQfZlUdETWYjV7fZJVJKT/oLzdDNMWuVA0L\n" +
"KXArpI3thLNKQLXisdF9hKPlZRDazACL9kWUUtJ0FzpEySK4e8wW/z9FuU6e6iO1\n" +
"9FbjxAfInJqk3EDiEhB5g73S2vtvPCxgq2DvWw9TDl/LIqdKG2JCS93koXCCaHmQ\n" +
"7MrIOqHPd+8rRbGpatXT9qyHKppUv9ATxVygO4rA794mgCFxpT+fkhz+NEB0twTk\n" +
"M65T1hnnOv5nZIxkcjBggt85UlZtnP3b9P7SYxsWIa46Oc38Od2f3YejfVg6B+Pq\n" +
"PgWNl3+/AgMBAAECggEAPdb5Ycc4m4A9QBSCRcRpzbyiFLKPh0HDg1n65q4hOtYr\n" +
"kAVYTVFTSF/lqGS+Ob3w2YIKujQKSUQrvCc5UHdFuHXMgxKIWbymK0+DAMb9SlYw\n" +
"6lkkcWp9gx9E4dnJ/df2SAAxovvrKMuHlL1SFASHhVtPfH2URvSfUaANLDXxyYOs\n" +
"8BX0Nr6wazhWjLjXo9yIGnKSvFfB8XisYcA78kEgas43zhmIGCDPqaYyyffOfRbx\n" +
"pM1KNwGmlN86iWR1CbwA/wwhcMySWQueS+s7cHbpRqZIYJF9jEeELiwi0vxjealS\n" +
"EMuHYedIRFMWaDIq9XyjrvXamHb0Z25jlXBNZHaM0QKBgQDE9adl+zAezR/n79vw\n" +
"0XiX2Fx1UEo3ApZHuoA2Q/PcBk+rlKqqQ3IwTcy6Wo648wK7v6Nq7w5nEWcsf0dU\n" +
"QA2Ng/AJEev/IfF34x7sKGYxtk1gcE0EuSBA3R+ocEZxnNw1Ryd5nUU24s8d4jCP\n" +
"Mkothnyaim+zE2raDlEtVc0CaQKBgQC509av+02Uq5oMjzbQp5PBJfQFjATOQT15\n" +
"eefYnVYurkQ1kcVfixkrO2ORhg4SjmI2Z5hJDgGtXdwgidpzkad+R2epS5qLMyno\n" +
"lQVpY6bMpEZ7Mos0yQygxnm8uNohEcTExOe+nP5fNJVpzBsGmfeyYOhnPQlf6oqf\n" +
"0cHizedb5wKBgQC/l5LyMil6HOGHlhzmIm3jj7VI7QR0hJC5T6N+phVml8ESUDjA\n" +
"DYHbmSKouISTRtkG14FY+RiSjCxH7bvuKazFV2289PETquogTA/9e8MFYqfcQwG4\n" +
"sXi9gBxWlnj/9a2EKiYtOB5nKLR/BlNkSHA93tAA6N+FXEMZwMmYhxk42QKBgAuY\n" +
"HQgD3PZOsqDf+qKQIhbmAFCsSMx5o5VFtuJ8BpmJA/Z3ruHkMuDQpsi4nX4o5hXQ\n" +
"5t6AAjjH52kcUMXvK40kdWJJtk3DFnVNfvXxYsHX6hHbuHXFqYUKfSP6QJnZmvZP\n" +
"9smcz/4usLfWJUWHK740b6upUkFqx9Vq5/b3s9y3AoGAdM5TW7LkkOFsdMGVAUzR\n" +
"9iXmCWElHTK2Pcp/3yqDBHSfiQx6Yp5ANyPnE9NBM0yauCfOyBB2oxLO4Rdv3Rqk\n" +
"9V9kyR/YAGr7dJaPcQ7pZX0OpkzgueAOJYPrx5VUzPYUtklYV1ycFZTfKlpFCxT+\n" +
"Ei6KUo0NXSdUIcB4yib1J10=";
static char passphrase[] = "passphrase".toCharArray();
/*
* Majority of the test case is here, setup is done below.
*/
private void createSSLEngines() throws Exception {
ssle1 = sslc.createSSLEngine("client", 1);
ssle1.setUseClientMode(true);
ssle2 = sslc.createSSLEngine("server", 2);
ssle2.setUseClientMode(false);
}
private boolean isHandshaking(SSLEngine e) {
return (e.getHandshakeStatus() != HandshakeStatus.NOT_HANDSHAKING);
}
private void checkResult(ByteBuffer bbIn, ByteBuffer bbOut,
SSLEngineResult result,
Status status, HandshakeStatus hsStatus,
int consumed, int produced)
throws Exception {
if ((status != null) && (result.getStatus() != status)) {
throw new Exception("Unexpected Status: need = " + status +
" got = " + result.getStatus());
}
if ((hsStatus != null) && (result.getHandshakeStatus() != hsStatus)) {
throw new Exception("Unexpected hsStatus: need = " + hsStatus +
" got = " + result.getHandshakeStatus());
}
if ((consumed != -1) && (consumed != result.bytesConsumed())) {
throw new Exception("Unexpected consumed: need = " + consumed +
" got = " + result.bytesConsumed());
}
if ((produced != -1) && (produced != result.bytesProduced())) {
throw new Exception("Unexpected produced: need = " + produced +
" got = " + result.bytesProduced());
}
if ((consumed != -1) && (bbIn.position() != result.bytesConsumed())) {
throw new Exception("Consumed " + bbIn.position() +
" != " + consumed);
}
if ((produced != -1) && (bbOut.position() != result.bytesProduced())) {
throw new Exception("produced " + bbOut.position() +
" != " + produced);
}
}
private void test(String cipherSuite, boolean exportable,
int lenServerKeyEx, int lenClientKeyEx) throws Exception {
createSSLEngines();
createBuffers();
SSLEngineResult result1; // ssle1's results from last operation
SSLEngineResult result2; // ssle2's results from last operation
String[] suites = new String [] {cipherSuite};
ssle1.setEnabledCipherSuites(suites);
ssle2.setEnabledCipherSuites(suites);
log("======================================");
log("===================");
log("client hello");
result1 = ssle1.wrap(appOut1, oneToTwo);
checkResult(appOut1, oneToTwo, result1,
Status.OK, HandshakeStatus.NEED_UNWRAP, 0, -1);
oneToTwo.flip();
result2 = ssle2.unwrap(oneToTwo, appIn2);
checkResult(oneToTwo, appIn2, result2,
Status.OK, HandshakeStatus.NEED_TASK, result1.bytesProduced(), 0);
runDelegatedTasks(ssle2);
oneToTwo.compact();
log("===================");
log("ServerHello");
result2 = ssle2.wrap(appOut2, twoToOne);
checkResult(appOut2, twoToOne, result2,
Status.OK, HandshakeStatus.NEED_UNWRAP, 0, -1);
twoToOne.flip();
log("Message length of ServerHello series: " + twoToOne.remaining());
if (twoToOne.remaining() < (lenServerKeyEx - KEY_LEN_BIAS) ||
twoToOne.remaining() > lenServerKeyEx) {
throw new Exception(
"Expected to generate ServerHello series messages of " +
lenServerKeyEx + " bytes, but not " + twoToOne.remaining());
}
result1 = ssle1.unwrap(twoToOne, appIn1);
checkResult(twoToOne, appIn1, result1,
Status.OK, HandshakeStatus.NEED_TASK, result2.bytesProduced(), 0);
runDelegatedTasks(ssle1);
twoToOne.compact();
log("===================");
log("Key Exchange");
result1 = ssle1.wrap(appOut1, oneToTwo);
checkResult(appOut1, oneToTwo, result1,
Status.OK, HandshakeStatus.NEED_WRAP, 0, -1);
oneToTwo.flip();
log("Message length of ClientKeyExchange: " + oneToTwo.remaining());
if (oneToTwo.remaining() < (lenClientKeyEx - KEY_LEN_BIAS) ||
oneToTwo.remaining() > lenClientKeyEx) {
throw new Exception(
"Expected to generate ClientKeyExchange message of " +
lenClientKeyEx + " bytes, but not " + oneToTwo.remaining());
}
result2 = ssle2.unwrap(oneToTwo, appIn2);
checkResult(oneToTwo, appIn2, result2,
Status.OK, HandshakeStatus.NEED_TASK, result1.bytesProduced(), 0);
runDelegatedTasks(ssle2);
oneToTwo.compact();
log("===================");
log("Client CCS");
result1 = ssle1.wrap(appOut1, oneToTwo);
checkResult(appOut1, oneToTwo, result1,
Status.OK, HandshakeStatus.NEED_WRAP, 0, -1);
oneToTwo.flip();
result2 = ssle2.unwrap(oneToTwo, appIn2);
checkResult(oneToTwo, appIn2, result2,
Status.OK, HandshakeStatus.NEED_UNWRAP,
result1.bytesProduced(), 0);
oneToTwo.compact();
log("===================");
log("Client Finished");
result1 = ssle1.wrap(appOut1, oneToTwo);
checkResult(appOut1, oneToTwo, result1,
Status.OK, HandshakeStatus.NEED_UNWRAP, 0, -1);
oneToTwo.flip();
result2 = ssle2.unwrap(oneToTwo, appIn2);
checkResult(oneToTwo, appIn2, result2,
Status.OK, HandshakeStatus.NEED_WRAP,
result1.bytesProduced(), 0);
oneToTwo.compact();
log("===================");
log("Server CCS");
result2 = ssle2.wrap(appOut2, twoToOne);
checkResult(appOut2, twoToOne, result2,
Status.OK, HandshakeStatus.NEED_WRAP, 0, -1);
twoToOne.flip();
result1 = ssle1.unwrap(twoToOne, appIn1);
checkResult(twoToOne, appIn1, result1,
Status.OK, HandshakeStatus.NEED_UNWRAP, result2.bytesProduced(), 0);
twoToOne.compact();
log("===================");
log("Server Finished");
result2 = ssle2.wrap(appOut2, twoToOne);
checkResult(appOut2, twoToOne, result2,
Status.OK, HandshakeStatus.FINISHED, 0, -1);
twoToOne.flip();
result1 = ssle1.unwrap(twoToOne, appIn1);
checkResult(twoToOne, appIn1, result1,
Status.OK, HandshakeStatus.FINISHED, result2.bytesProduced(), 0);
twoToOne.compact();
log("===================");
log("Check Session/Ciphers");
String cs = ssle1.getSession().getCipherSuite();
if (!cs.equals(suites[0])) {
throw new Exception("suites not equal: " + cs + "/" + suites[0]);
}
cs = ssle2.getSession().getCipherSuite();
if (!cs.equals(suites[0])) {
throw new Exception("suites not equal: " + cs + "/" + suites[0]);
}
log("===================");
log("Done with SSL/TLS handshaking");
}
public static void main(String args[]) throws Exception {
if (args.length != 4) {
System.out.println(
"Usage: java DHEKeySizing cipher-suite " +
"exportable(true|false)\n" +
" size-of-server-hello-record size-of-client-key-exchange");
throw new Exception("Incorrect usage!");
}
(new DHEKeySizing()).test(args[0],
Boolean.parseBoolean(args[1]),
Integer.parseInt(args[2]),
Integer.parseInt(args[3]));
System.out.println("Test Passed.");
}
/*
* **********************************************************
* Majority of the test case is above, below is just setup stuff
* **********************************************************
*/
public DHEKeySizing() throws Exception {
sslc = getSSLContext();
}
/*
* Create an initialized SSLContext to use for this test.
*/
private SSLContext getSSLContext() throws Exception {
// generate certificate from cert string
CertificateFactory cf = CertificateFactory.getInstance("X.509");
// create a key store
KeyStore ts = KeyStore.getInstance("JKS");
KeyStore ks = KeyStore.getInstance("JKS");
ts.load(null, null);
ks.load(null, null);
// import the trused cert
ByteArrayInputStream is =
new ByteArrayInputStream(trustedCertStr.getBytes());
Certificate trusedCert = cf.generateCertificate(is);
is.close();
ts.setCertificateEntry("rsa-trusted-2048", trusedCert);
// generate the private key.
String keySpecStr = targetPrivateKey;
PKCS8EncodedKeySpec priKeySpec = new PKCS8EncodedKeySpec(
Base64.getMimeDecoder().decode(keySpecStr));
KeyFactory kf = KeyFactory.getInstance("RSA");
RSAPrivateKey priKey = (RSAPrivateKey)kf.generatePrivate(priKeySpec);
Certificate[] chain = new Certificate[1];
chain[0] = trusedCert;
// import the key entry.
ks.setKeyEntry("rsa-key-2048", priKey, passphrase, chain);
// create SSL context
KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
kmf.init(ks, passphrase);
TrustManagerFactory tmf = TrustManagerFactory.getInstance("SunX509");
tmf.init(ts);
SSLContext sslCtx = SSLContext.getInstance("TLSv1");
sslCtx.init(kmf.getKeyManagers(), tmf.getTrustManagers(), null);
return sslCtx;
}
private void createBuffers() {
// Size the buffers as appropriate.
SSLSession session = ssle1.getSession();
int appBufferMax = session.getApplicationBufferSize();
int netBufferMax = session.getPacketBufferSize();
appIn1 = ByteBuffer.allocateDirect(appBufferMax + 50);
appIn2 = ByteBuffer.allocateDirect(appBufferMax + 50);
oneToTwo = ByteBuffer.allocateDirect(netBufferMax);
twoToOne = ByteBuffer.allocateDirect(netBufferMax);
appOut1 = ByteBuffer.wrap("Hi Engine2, I'm SSLEngine1".getBytes());
appOut2 = ByteBuffer.wrap("Hello Engine1, I'm SSLEngine2".getBytes());
log("AppOut1 = " + appOut1);
log("AppOut2 = " + appOut2);
log("");
}
private static void runDelegatedTasks(SSLEngine engine) throws Exception {
Runnable runnable;
while ((runnable = engine.getDelegatedTask()) != null) {
log("running delegated task...");
runnable.run();
}
}
private static void log(String str) {
if (debug) {
System.out.println(str);
}
}
}
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