/* * Copyright (c) 2001, 2011, 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.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * 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. */ package sun.security.ssl; import java.util.*;import java.math.BigInteger; import java.security.*;import java.security.interfaces.RSAPublicKey;import java.security.spec.RSAPublicKeySpec;import java.security.spec.*; import javax.crypto.*; // explicit import to override the Provider class in this packageimport java.security.Provider; // need internal Sun classes for FIPS tricksimport sun.security.jca.Providers;import sun.security.jca.ProviderList; import sun.security.ec.ECParameters;import sun.security.ec.NamedCurve; import static sun.security.ssl.SunJSSE.cryptoProvider; /** * This class contains a few static methods for interaction with the JCA/JCE * to obtain implementations, etc. * * @author  Andreas Sterbenz */final class JsseJce {     private final static Debug debug = Debug.getInstance("ssl");     private final static ProviderList fipsProviderList;     // Flag indicating whether EC crypto is available.    // If null, then we have not checked yet.    // If yes, then all the EC based crypto we need is available.    private static Boolean ecAvailable;     // Flag indicating whether Kerberos crypto is available.    // If true, then all the Kerberos-based crypto we need is available.    private final static boolean kerberosAvailable;    static {        boolean temp;        try {            AccessController.doPrivileged(                new PrivilegedExceptionAction<Void>() {                    public Void run() throws Exception {                        // Test for Kerberos using the bootstrap class loader                        Class.forName("sun.security.krb5.PrincipalName", true,                                null);                        return null;                    }                });            temp = true;         } catch (Exception e) {            temp = false;        }        kerberosAvailable = temp;    }     static {        // force FIPS flag initialization        // Because isFIPS() is synchronized and cryptoProvider is not modified        // after it completes, this also eliminates the need for any further        // synchronization when accessing cryptoProvider        if (SunJSSE.isFIPS() == false) {            fipsProviderList = null;        } else {            // Setup a ProviderList that can be used by the trust manager            // during certificate chain validation. All the crypto must be            // from the FIPS provider, but we also allow the required            // certificate related services from the SUN provider.            Provider sun = Security.getProvider("SUN");            if (sun == null) {                throw new RuntimeException                    ("FIPS mode: SUN provider must be installed");            }            Provider sunCerts = new SunCertificates(sun);            fipsProviderList = ProviderList.newList(cryptoProvider, sunCerts);        }    }     private static final class SunCertificates extends Provider {        SunCertificates(final Provider p) {            super("SunCertificates", 1.0d, "SunJSSE internal");            AccessController.doPrivileged(new PrivilegedAction<Object>() {                public Object run() {                    // copy certificate related services from the Sun provider                    for (Map.Entry<Object,Object> entry : p.entrySet()) {                        String key = (String)entry.getKey();                        if (key.startsWith("CertPathValidator.")                                || key.startsWith("CertPathBuilder.")                                || key.startsWith("CertStore.")                                || key.startsWith("CertificateFactory.")) {                            put(key, entry.getValue());                        }                    }                    return null;                }            });        }    }     /**     * JCE transformation string for RSA with PKCS#1 v1.5 padding.     * Can be used for encryption, decryption, signing, verifying.     */    final static String CIPHER_RSA_PKCS1 = "RSA/ECB/PKCS1Padding";    /**     * JCE transformation string for the stream cipher RC4.     */    final static String CIPHER_RC4 = "RC4";    /**     * JCE transformation string for DES in CBC mode without padding.     */    final static String CIPHER_DES = "DES/CBC/NoPadding";    /**     * JCE transformation string for (3-key) Triple DES in CBC mode     * without padding.     */    final static String CIPHER_3DES = "DESede/CBC/NoPadding";    /**     * JCE transformation string for AES in CBC mode     * without padding.     */    final static String CIPHER_AES = "AES/CBC/NoPadding";    /**     * JCA identifier string for DSA, i.e. a DSA with SHA-1.     */    final static String SIGNATURE_DSA = "DSA";    /**     * JCA identifier string for ECDSA, i.e. a ECDSA with SHA-1.     */    final static String SIGNATURE_ECDSA = "SHA1withECDSA";    /**     * JCA identifier string for Raw DSA, i.e. a DSA signature without     * hashing where the application provides the SHA-1 hash of the data.     * Note that the standard name is "NONEwithDSA" but we use "RawDSA"     * for compatibility.     */    final static String SIGNATURE_RAWDSA = "RawDSA";    /**     * JCA identifier string for Raw ECDSA, i.e. a DSA signature without     * hashing where the application provides the SHA-1 hash of the data.     */    final static String SIGNATURE_RAWECDSA = "NONEwithECDSA";    /**     * JCA identifier string for Raw RSA, i.e. a RSA PKCS#1 v1.5 signature     * without hashing where the application provides the hash of the data.     * Used for RSA client authentication with a 36 byte hash.     */    final static String SIGNATURE_RAWRSA = "NONEwithRSA";    /**     * JCA identifier string for the SSL/TLS style RSA Signature. I.e.     * an signature using RSA with PKCS#1 v1.5 padding signing a     * concatenation of an MD5 and SHA-1 digest.     */    final static String SIGNATURE_SSLRSA = "MD5andSHA1withRSA";     private JsseJce() {        // no instantiation of this class    }     synchronized static boolean isEcAvailable() {        if (ecAvailable == null) {            try {                JsseJce.getSignature(SIGNATURE_ECDSA);                JsseJce.getSignature(SIGNATURE_RAWECDSA);                JsseJce.getKeyAgreement("ECDH");                JsseJce.getKeyFactory("EC");                JsseJce.getKeyPairGenerator("EC");                ecAvailable = true;            } catch (Exception e) {                ecAvailable = false;            }        }        return ecAvailable;    }     synchronized static void clearEcAvailable() {        ecAvailable = null;    }     static boolean isKerberosAvailable() {        return kerberosAvailable;    }     /**     * Return an JCE cipher implementation for the specified algorithm.     */    static Cipher getCipher(String transformation)            throws NoSuchAlgorithmException {        try {            if (cryptoProvider == null) {                return Cipher.getInstance(transformation);            } else {                return Cipher.getInstance(transformation, cryptoProvider);            }        } catch (NoSuchPaddingException e) {            throw new NoSuchAlgorithmException(e);        }    }     /**     * Return an JCA signature implementation for the specified algorithm.     * The algorithm string should be one of the constants defined     * in this class.     */    static Signature getSignature(String algorithm)            throws NoSuchAlgorithmException {        if (cryptoProvider == null) {            return Signature.getInstance(algorithm);        } else {            // reference equality            if (algorithm == SIGNATURE_SSLRSA) {                // The SunPKCS11 provider currently does not support this                // special algorithm. We allow a fallback in this case because                // the SunJSSE implementation does the actual crypto using                // a NONEwithRSA signature obtained from the cryptoProvider.                if (cryptoProvider.getService("Signature", algorithm) == null) {                    // Calling Signature.getInstance() and catching the                    // exception would be cleaner, but exceptions are a little                    // expensive. So we check directly via getService().                    try {                        return Signature.getInstance(algorithm, "SunJSSE");                    } catch (NoSuchProviderException e) {                        throw new NoSuchAlgorithmException(e);                    }                }            }            return Signature.getInstance(algorithm, cryptoProvider);        }    }     static KeyGenerator getKeyGenerator(String algorithm)            throws NoSuchAlgorithmException {        if (cryptoProvider == null) {            return KeyGenerator.getInstance(algorithm);        } else {            return KeyGenerator.getInstance(algorithm, cryptoProvider);        }    }     static KeyPairGenerator getKeyPairGenerator(String algorithm)            throws NoSuchAlgorithmException {        if (cryptoProvider == null) {            return KeyPairGenerator.getInstance(algorithm);        } else {            return KeyPairGenerator.getInstance(algorithm, cryptoProvider);        }    }     static KeyAgreement getKeyAgreement(String algorithm)            throws NoSuchAlgorithmException {        if (cryptoProvider == null) {            return KeyAgreement.getInstance(algorithm);        } else {            return KeyAgreement.getInstance(algorithm, cryptoProvider);        }    }     static Mac getMac(String algorithm)            throws NoSuchAlgorithmException {        if (cryptoProvider == null) {            return Mac.getInstance(algorithm);        } else {            return Mac.getInstance(algorithm, cryptoProvider);        }    }     static KeyFactory getKeyFactory(String algorithm)            throws NoSuchAlgorithmException {        if (cryptoProvider == null) {            return KeyFactory.getInstance(algorithm);        } else {            return KeyFactory.getInstance(algorithm, cryptoProvider);        }    }     static SecureRandom getSecureRandom() throws KeyManagementException {        if (cryptoProvider == null) {            return new SecureRandom();        }        // Try "PKCS11" first. If that is not supported, iterate through        // the provider and return the first working implementation.        try {            return SecureRandom.getInstance("PKCS11", cryptoProvider);        } catch (NoSuchAlgorithmException e) {            // ignore        }        for (Provider.Service s : cryptoProvider.getServices()) {            if (s.getType().equals("SecureRandom")) {                try {                    return SecureRandom.getInstance(s.getAlgorithm(), cryptoProvider);                } catch (NoSuchAlgorithmException ee) {                    // ignore                }            }        }        throw new KeyManagementException("FIPS mode: no SecureRandom "            + " implementation found in provider " + cryptoProvider.getName());    }     static MessageDigest getMD5() {        return getMessageDigest("MD5");    }     static MessageDigest getSHA() {        return getMessageDigest("SHA");    }     static MessageDigest getMessageDigest(String algorithm) {        try {            if (cryptoProvider == null) {                return MessageDigest.getInstance(algorithm);            } else {                return MessageDigest.getInstance(algorithm, cryptoProvider);            }        } catch (NoSuchAlgorithmException e) {            throw new RuntimeException                        ("Algorithm " + algorithm + " not available", e);        }    }     static int getRSAKeyLength(PublicKey key) {        BigInteger modulus;        if (key instanceof RSAPublicKey) {            modulus = ((RSAPublicKey)key).getModulus();        } else {            RSAPublicKeySpec spec = getRSAPublicKeySpec(key);            modulus = spec.getModulus();        }        return modulus.bitLength();    }     static RSAPublicKeySpec getRSAPublicKeySpec(PublicKey key) {        if (key instanceof RSAPublicKey) {            RSAPublicKey rsaKey = (RSAPublicKey)key;            return new RSAPublicKeySpec(rsaKey.getModulus(),                                        rsaKey.getPublicExponent());        }        try {            KeyFactory factory = JsseJce.getKeyFactory("RSA");            return factory.getKeySpec(key, RSAPublicKeySpec.class);        } catch (Exception e) {            throw (RuntimeException)new RuntimeException().initCause(e);        }    }     static ECParameterSpec getECParameterSpec(String namedCurveOid) {        return NamedCurve.getECParameterSpec(namedCurveOid);    }     static String getNamedCurveOid(ECParameterSpec params) {        return ECParameters.getCurveName(params);    }     static ECPoint decodePoint(byte[] encoded, EllipticCurve curve)            throws java.io.IOException {        return ECParameters.decodePoint(encoded, curve);    }     static byte[] encodePoint(ECPoint point, EllipticCurve curve) {        return ECParameters.encodePoint(point, curve);    }     // In FIPS mode, set thread local providers; otherwise a no-op.    // Must be paired with endFipsProvider.    static Object beginFipsProvider() {        if (fipsProviderList == null) {            return null;        } else {            return Providers.beginThreadProviderList(fipsProviderList);        }    }     static void endFipsProvider(Object o) {        if (fipsProviderList != null) {            Providers.endThreadProviderList((ProviderList)o);        }    } }