| /* |
| * Copyright (c) 2005, 2019, 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.mscapi; |
| |
| import java.math.BigInteger; |
| import java.security.AlgorithmParameters; |
| import java.security.KeyException; |
| import java.security.KeyFactory; |
| import java.security.KeyRep; |
| import java.security.ProviderException; |
| import java.security.PublicKey; |
| import java.security.interfaces.ECPublicKey; |
| import java.security.interfaces.RSAPublicKey; |
| import java.security.spec.ECParameterSpec; |
| import java.security.spec.ECPoint; |
| import java.security.spec.ECPublicKeySpec; |
| import java.util.Arrays; |
| |
| import sun.security.rsa.RSAUtil.KeyType; |
| import sun.security.rsa.RSAPublicKeyImpl; |
| import sun.security.util.ECKeySizeParameterSpec; |
| |
| /** |
| * The handle for an RSA public key using the Microsoft Crypto API. |
| * |
| * @since 1.6 |
| */ |
| public abstract class CPublicKey extends CKey implements PublicKey { |
| |
| private static final long serialVersionUID = -2289561342425825391L; |
| |
| protected byte[] encoding = null; |
| |
| public static class CECPublicKey extends CPublicKey implements ECPublicKey { |
| |
| private ECPoint w = null; |
| private static final long serialVersionUID = 12L; |
| |
| CECPublicKey(NativeHandles handles, int keyLength) { |
| super("EC", handles, keyLength); |
| } |
| |
| @Override |
| public ECPoint getW() { |
| if (w == null) { |
| // See CKey::generateECBlob. |
| try { |
| byte[] blob = getPublicKeyBlob( |
| handles.hCryptProv, handles.hCryptKey); |
| int len = blob[8] & 0xff; |
| byte[] x = Arrays.copyOfRange(blob, 8, 8 + len); |
| byte[] y = Arrays.copyOfRange(blob, 8 + len, 8 + len + len); |
| w = new ECPoint(new BigInteger(1, x), new BigInteger(1, y)); |
| } catch (KeyException e) { |
| throw new ProviderException(e); |
| } |
| } |
| return w; |
| } |
| |
| @Override |
| public byte[] getEncoded() { |
| if (encoding == null) { |
| try { |
| encoding = KeyFactory.getInstance("EC").generatePublic( |
| new ECPublicKeySpec(getW(), getParams())) |
| .getEncoded(); |
| } catch (Exception e) { |
| // ignore |
| } |
| } |
| return encoding; |
| } |
| |
| @Override |
| public ECParameterSpec getParams() { |
| try { |
| AlgorithmParameters ap = AlgorithmParameters.getInstance("EC"); |
| ap.init(new ECKeySizeParameterSpec(keyLength)); |
| return ap.getParameterSpec(ECParameterSpec.class); |
| } catch (Exception e) { |
| throw new ProviderException(e); |
| } |
| } |
| |
| public String toString() { |
| StringBuffer sb = new StringBuffer(); |
| sb.append(algorithm + "PublicKey [size=").append(keyLength) |
| .append("]\n ECPoint: ").append(getW()) |
| .append("\n params: ").append(getParams()); |
| return sb.toString(); |
| } |
| } |
| |
| public static class CRSAPublicKey extends CPublicKey implements RSAPublicKey { |
| |
| private BigInteger modulus = null; |
| private BigInteger exponent = null; |
| private static final long serialVersionUID = 12L; |
| |
| CRSAPublicKey(NativeHandles handles, int keyLength) { |
| super("RSA", handles, keyLength); |
| } |
| |
| public String toString() { |
| StringBuffer sb = new StringBuffer(); |
| sb.append(algorithm + "PublicKey [size=").append(keyLength) |
| .append(" bits, type="); |
| if (handles.hCryptKey != 0) { |
| sb.append(getKeyType(handles.hCryptKey)) |
| .append(", container=").append(getContainerName(handles.hCryptProv)); |
| } else { |
| sb.append("CNG"); |
| } |
| sb.append("]\n modulus: ").append(getModulus()) |
| .append("\n public exponent: ").append(getPublicExponent()); |
| return sb.toString(); |
| } |
| |
| @Override |
| public BigInteger getPublicExponent() { |
| if (exponent == null) { |
| try { |
| byte[] publicKeyBlob = getPublicKeyBlob( |
| handles.hCryptProv, handles.hCryptKey); |
| exponent = new BigInteger(1, getExponent(publicKeyBlob)); |
| } catch (KeyException e) { |
| throw new ProviderException(e); |
| } |
| } |
| return exponent; |
| } |
| |
| @Override |
| public BigInteger getModulus() { |
| if (modulus == null) { |
| try { |
| byte[] publicKeyBlob = getPublicKeyBlob( |
| handles.hCryptProv, handles.hCryptKey); |
| modulus = new BigInteger(1, getModulus(publicKeyBlob)); |
| } catch (KeyException e) { |
| throw new ProviderException(e); |
| } |
| } |
| return modulus; |
| } |
| |
| @Override |
| public byte[] getEncoded() { |
| if (encoding == null) { |
| try { |
| encoding = RSAPublicKeyImpl.newKey(KeyType.RSA, null, |
| getModulus(), getPublicExponent()).getEncoded(); |
| } catch (KeyException e) { |
| // ignore |
| } |
| } |
| return encoding; |
| } |
| |
| private native byte[] getExponent(byte[] keyBlob) throws KeyException; |
| |
| private native byte[] getModulus(byte[] keyBlob) throws KeyException; |
| } |
| |
| // Called by native code inside security.cpp |
| static CPublicKey of( |
| String alg, long hCryptProv, long hCryptKey, int keyLength) { |
| return of(alg, new NativeHandles(hCryptProv, hCryptKey), keyLength); |
| } |
| |
| public static CPublicKey of( |
| String alg, NativeHandles handles, int keyLength) { |
| switch (alg) { |
| case "RSA": |
| return new CRSAPublicKey(handles, keyLength); |
| case "EC": |
| return new CECPublicKey(handles, keyLength); |
| default: |
| throw new AssertionError("Unsupported algorithm: " + alg); |
| } |
| } |
| |
| protected CPublicKey( |
| String alg, NativeHandles handles, int keyLength) { |
| super(alg, handles, keyLength); |
| } |
| |
| @Override |
| public String getFormat() { |
| return "X.509"; |
| } |
| |
| protected Object writeReplace() throws java.io.ObjectStreamException { |
| return new KeyRep(KeyRep.Type.PUBLIC, |
| getAlgorithm(), |
| getFormat(), |
| getEncoded()); |
| } |
| |
| // Returns the CAPI or CNG representation of the key. |
| native byte[] getPublicKeyBlob(long hCryptProv, long hCryptKey) |
| throws KeyException; |
| } |