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/*
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* Copyright 2001-2007 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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package sun.security.ssl;
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import java.util.*;
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import java.math.BigInteger;
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import java.security.*;
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import java.security.interfaces.RSAPublicKey;
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import java.security.spec.RSAPublicKeySpec;
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import java.security.spec.*;
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import javax.crypto.*;
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// explicit import to override the Provider class in this package
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import java.security.Provider;
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// need internal Sun classes for FIPS tricks
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import sun.security.jca.Providers;
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import sun.security.jca.ProviderList;
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import sun.security.ec.ECParameters;
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import sun.security.ec.NamedCurve;
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import static sun.security.ssl.SunJSSE.cryptoProvider;
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/**
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* This class contains a few static methods for interaction with the JCA/JCE
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* to obtain implementations, etc.
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*
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* @author Andreas Sterbenz
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*/
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final class JsseJce {
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private final static Debug debug = Debug.getInstance("ssl");
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private final static ProviderList fipsProviderList;
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// Flag indicating whether EC crypto is available.
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// If null, then we have not checked yet.
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// If yes, then all the EC based crypto we need is available.
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private static volatile Boolean ecAvailable;
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static {
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// force FIPS flag initialization
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// Because isFIPS() is synchronized and cryptoProvider is not modified
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// after it completes, this also eliminates the need for any further
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// synchronization when accessing cryptoProvider
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if (SunJSSE.isFIPS() == false) {
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fipsProviderList = null;
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} else {
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// Setup a ProviderList that can be used by the trust manager
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// during certificate chain validation. All the crypto must be
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// from the FIPS provider, but we also allow the required
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// certificate related services from the SUN provider.
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Provider sun = Security.getProvider("SUN");
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if (sun == null) {
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throw new RuntimeException
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("FIPS mode: SUN provider must be installed");
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}
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Provider sunCerts = new SunCertificates(sun);
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fipsProviderList = ProviderList.newList(cryptoProvider, sunCerts);
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}
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}
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private static final class SunCertificates extends Provider {
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SunCertificates(final Provider p) {
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super("SunCertificates", 1.0d, "SunJSSE internal");
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AccessController.doPrivileged(new PrivilegedAction<Object>() {
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public Object run() {
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// copy certificate related services from the Sun provider
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for (Map.Entry<Object,Object> entry : p.entrySet()) {
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String key = (String)entry.getKey();
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if (key.startsWith("CertPathValidator.")
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|| key.startsWith("CertPathBuilder.")
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|| key.startsWith("CertStore.")
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|| key.startsWith("CertificateFactory.")) {
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put(key, entry.getValue());
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}
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}
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return null;
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}
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});
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}
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}
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/**
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* JCE transformation string for RSA with PKCS#1 v1.5 padding.
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* Can be used for encryption, decryption, signing, verifying.
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*/
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final static String CIPHER_RSA_PKCS1 = "RSA/ECB/PKCS1Padding";
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/**
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* JCE transformation string for the stream cipher RC4.
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*/
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final static String CIPHER_RC4 = "RC4";
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/**
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* JCE transformation string for DES in CBC mode without padding.
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*/
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final static String CIPHER_DES = "DES/CBC/NoPadding";
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/**
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* JCE transformation string for (3-key) Triple DES in CBC mode
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* without padding.
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*/
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final static String CIPHER_3DES = "DESede/CBC/NoPadding";
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/**
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* JCE transformation string for AES in CBC mode
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* without padding.
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*/
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final static String CIPHER_AES = "AES/CBC/NoPadding";
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/**
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* JCA identifier string for DSA, i.e. a DSA with SHA-1.
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*/
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final static String SIGNATURE_DSA = "DSA";
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/**
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* JCA identifier string for ECDSA, i.e. a ECDSA with SHA-1.
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*/
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final static String SIGNATURE_ECDSA = "SHA1withECDSA";
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/**
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* JCA identifier string for Raw DSA, i.e. a DSA signature without
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* hashing where the application provides the SHA-1 hash of the data.
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* Note that the standard name is "NONEwithDSA" but we use "RawDSA"
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* for compatibility.
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*/
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final static String SIGNATURE_RAWDSA = "RawDSA";
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/**
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* JCA identifier string for Raw ECDSA, i.e. a DSA signature without
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* hashing where the application provides the SHA-1 hash of the data.
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*/
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final static String SIGNATURE_RAWECDSA = "NONEwithECDSA";
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/**
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* JCA identifier string for Raw RSA, i.e. a RSA PKCS#1 v1.5 signature
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* without hashing where the application provides the hash of the data.
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* Used for RSA client authentication with a 36 byte hash.
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*/
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final static String SIGNATURE_RAWRSA = "NONEwithRSA";
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/**
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* JCA identifier string for the SSL/TLS style RSA Signature. I.e.
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* an signature using RSA with PKCS#1 v1.5 padding signing a
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* concatenation of an MD5 and SHA-1 digest.
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*/
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final static String SIGNATURE_SSLRSA = "MD5andSHA1withRSA";
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private JsseJce() {
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// no instantiation of this class
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}
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static boolean isEcAvailable() {
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if (ecAvailable == null) {
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try {
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JsseJce.getSignature(SIGNATURE_ECDSA);
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JsseJce.getSignature(SIGNATURE_RAWECDSA);
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JsseJce.getKeyAgreement("ECDH");
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JsseJce.getKeyFactory("EC");
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JsseJce.getKeyPairGenerator("EC");
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ecAvailable = true;
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} catch (Exception e) {
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ecAvailable = false;
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}
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}
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return ecAvailable;
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}
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static void clearEcAvailable() {
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ecAvailable = null;
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}
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/**
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* Return an JCE cipher implementation for the specified algorithm.
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*/
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static Cipher getCipher(String transformation)
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throws NoSuchAlgorithmException {
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try {
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if (cryptoProvider == null) {
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return Cipher.getInstance(transformation);
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} else {
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return Cipher.getInstance(transformation, cryptoProvider);
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}
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} catch (NoSuchPaddingException e) {
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throw new NoSuchAlgorithmException(e);
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}
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}
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/**
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* Return an JCA signature implementation for the specified algorithm.
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* The algorithm string should be one of the constants defined
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* in this class.
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*/
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static Signature getSignature(String algorithm)
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throws NoSuchAlgorithmException {
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if (cryptoProvider == null) {
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return Signature.getInstance(algorithm);
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} else {
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// reference equality
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if (algorithm == SIGNATURE_SSLRSA) {
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// The SunPKCS11 provider currently does not support this
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// special algorithm. We allow a fallback in this case because
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// the SunJSSE implementation does the actual crypto using
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// a NONEwithRSA signature obtained from the cryptoProvider.
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if (cryptoProvider.getService("Signature", algorithm) == null) {
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// Calling Signature.getInstance() and catching the exception
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// would be cleaner, but exceptions are a little expensive.
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// So we check directly via getService().
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try {
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return Signature.getInstance(algorithm, "SunJSSE");
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} catch (NoSuchProviderException e) {
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throw new NoSuchAlgorithmException(e);
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}
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}
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}
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return Signature.getInstance(algorithm, cryptoProvider);
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}
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}
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static KeyGenerator getKeyGenerator(String algorithm)
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throws NoSuchAlgorithmException {
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if (cryptoProvider == null) {
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return KeyGenerator.getInstance(algorithm);
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} else {
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return KeyGenerator.getInstance(algorithm, cryptoProvider);
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}
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}
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static KeyPairGenerator getKeyPairGenerator(String algorithm)
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throws NoSuchAlgorithmException {
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if (cryptoProvider == null) {
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return KeyPairGenerator.getInstance(algorithm);
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} else {
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return KeyPairGenerator.getInstance(algorithm, cryptoProvider);
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}
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}
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static KeyAgreement getKeyAgreement(String algorithm)
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throws NoSuchAlgorithmException {
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if (cryptoProvider == null) {
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return KeyAgreement.getInstance(algorithm);
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} else {
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return KeyAgreement.getInstance(algorithm, cryptoProvider);
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}
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}
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static Mac getMac(String algorithm)
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throws NoSuchAlgorithmException {
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if (cryptoProvider == null) {
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return Mac.getInstance(algorithm);
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} else {
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return Mac.getInstance(algorithm, cryptoProvider);
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}
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}
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static KeyFactory getKeyFactory(String algorithm)
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throws NoSuchAlgorithmException {
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if (cryptoProvider == null) {
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return KeyFactory.getInstance(algorithm);
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} else {
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return KeyFactory.getInstance(algorithm, cryptoProvider);
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}
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}
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static SecureRandom getSecureRandom() throws KeyManagementException {
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if (cryptoProvider == null) {
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return new SecureRandom();
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}
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// Try "PKCS11" first. If that is not supported, iterate through
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// the provider and return the first working implementation.
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try {
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return SecureRandom.getInstance("PKCS11", cryptoProvider);
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} catch (NoSuchAlgorithmException e) {
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// ignore
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}
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for (Provider.Service s : cryptoProvider.getServices()) {
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if (s.getType().equals("SecureRandom")) {
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try {
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return SecureRandom.getInstance(s.getAlgorithm(), cryptoProvider);
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} catch (NoSuchAlgorithmException ee) {
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// ignore
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}
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}
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}
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throw new KeyManagementException("FIPS mode: no SecureRandom "
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+ " implementation found in provider " + cryptoProvider.getName());
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}
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static MessageDigest getMD5() {
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return getMessageDigest("MD5");
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}
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static MessageDigest getSHA() {
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return getMessageDigest("SHA");
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}
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static MessageDigest getMessageDigest(String algorithm) {
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try {
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if (cryptoProvider == null) {
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return MessageDigest.getInstance(algorithm);
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} else {
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return MessageDigest.getInstance(algorithm, cryptoProvider);
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}
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} catch (NoSuchAlgorithmException e) {
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throw new RuntimeException
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("Algorithm " + algorithm + " not available", e);
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}
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}
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static int getRSAKeyLength(PublicKey key) {
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BigInteger modulus;
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if (key instanceof RSAPublicKey) {
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modulus = ((RSAPublicKey)key).getModulus();
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} else {
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RSAPublicKeySpec spec = getRSAPublicKeySpec(key);
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modulus = spec.getModulus();
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}
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return modulus.bitLength();
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}
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static RSAPublicKeySpec getRSAPublicKeySpec(PublicKey key) {
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if (key instanceof RSAPublicKey) {
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RSAPublicKey rsaKey = (RSAPublicKey)key;
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return new RSAPublicKeySpec(rsaKey.getModulus(),
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rsaKey.getPublicExponent());
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}
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try {
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KeyFactory factory = JsseJce.getKeyFactory("RSA");
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return factory.getKeySpec(key, RSAPublicKeySpec.class);
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} catch (Exception e) {
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throw (RuntimeException)new RuntimeException().initCause(e);
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}
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}
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static ECParameterSpec getECParameterSpec(String namedCurveOid) {
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return NamedCurve.getECParameterSpec(namedCurveOid);
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}
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static String getNamedCurveOid(ECParameterSpec params) {
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return ECParameters.getCurveName(params);
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}
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static ECPoint decodePoint(byte[] encoded, EllipticCurve curve)
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throws java.io.IOException {
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return ECParameters.decodePoint(encoded, curve);
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}
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static byte[] encodePoint(ECPoint point, EllipticCurve curve) {
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return ECParameters.encodePoint(point, curve);
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}
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// In FIPS mode, set thread local providers; otherwise a no-op.
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// Must be paired with endFipsProvider.
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static Object beginFipsProvider() {
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if (fipsProviderList == null) {
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return null;
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} else {
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return Providers.beginThreadProviderList(fipsProviderList);
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}
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}
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static void endFipsProvider(Object o) {
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if (fipsProviderList != null) {
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Providers.endThreadProviderList((ProviderList)o);
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}
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}
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}
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