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/* Copyright (c) 2019, Oracle and/or its affiliates. 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. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.security.pkcs11;
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import java.io.ByteArrayOutputStream;
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import java.nio.ByteBuffer;
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import java.util.Arrays;
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import java.util.Locale;
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import java.security.*;
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import java.security.spec.*;
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import javax.crypto.*;
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import javax.crypto.spec.*;
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import sun.nio.ch.DirectBuffer;
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import sun.security.jca.JCAUtil;
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import sun.security.pkcs11.wrapper.*;
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import static sun.security.pkcs11.wrapper.PKCS11Constants.*;
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/**
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* P11 AEAD Cipher implementation class. This class currently supports
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* AES with GCM mode.
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*
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* Note that AEAD modes do not use padding, so this class does not have
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* its own padding impl. In addition, NSS CKM_AES_GCM only supports single-part
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* encryption/decryption, thus the current impl uses PKCS#11 C_Encrypt/C_Decrypt
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* calls and buffers data until doFinal is called.
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*
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* Note that PKCS#11 standard currently only supports GCM and CCM AEAD modes.
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* There are no provisions for other AEAD modes yet.
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*
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* @since 13
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*/
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final class P11AEADCipher extends CipherSpi {
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// mode constant for GCM mode
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private static final int MODE_GCM = 10;
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// default constants for GCM
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private static final int GCM_DEFAULT_TAG_LEN = 16;
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private static final int GCM_DEFAULT_IV_LEN = 16;
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private static final String ALGO = "AES";
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// token instance
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private final Token token;
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// mechanism id
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private final long mechanism;
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// mode, one of MODE_* above
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private final int blockMode;
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// acceptable key size, -1 if more than 1 key sizes are accepted
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private final int fixedKeySize;
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// associated session, if any
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private Session session = null;
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// key, if init() was called
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private P11Key p11Key = null;
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// flag indicating whether an operation is initialized
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private boolean initialized = false;
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// falg indicating encrypt or decrypt mode
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private boolean encrypt = true;
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// parameters
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private byte[] iv = null;
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private int tagLen = -1;
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private SecureRandom random = JCAUtil.getSecureRandom();
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// dataBuffer is cleared upon doFinal calls
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private ByteArrayOutputStream dataBuffer = new ByteArrayOutputStream();
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// aadBuffer is cleared upon successful init calls
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private ByteArrayOutputStream aadBuffer = new ByteArrayOutputStream();
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private boolean updateCalled = false;
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private boolean requireReinit = false;
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private P11Key lastEncKey = null;
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private byte[] lastEncIv = null;
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P11AEADCipher(Token token, String algorithm, long mechanism)
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throws PKCS11Exception, NoSuchAlgorithmException {
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super();
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this.token = token;
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this.mechanism = mechanism;
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String[] algoParts = algorithm.split("/");
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if (algoParts.length != 3) {
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throw new ProviderException("Unsupported Transformation format: " +
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algorithm);
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}
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if (!algoParts[0].startsWith("AES")) {
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throw new ProviderException("Only support AES for AEAD cipher mode");
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}
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int index = algoParts[0].indexOf('_');
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if (index != -1) {
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// should be well-formed since we specify what we support
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fixedKeySize = Integer.parseInt(algoParts[0].substring(index+1)) >> 3;
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} else {
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fixedKeySize = -1;
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}
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this.blockMode = parseMode(algoParts[1]);
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if (!algoParts[2].equals("NoPadding")) {
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throw new ProviderException("Only NoPadding is supported for AEAD cipher mode");
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}
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}
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protected void engineSetMode(String mode) throws NoSuchAlgorithmException {
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// Disallow change of mode for now since currently it's explicitly
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// defined in transformation strings
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throw new NoSuchAlgorithmException("Unsupported mode " + mode);
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}
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private int parseMode(String mode) throws NoSuchAlgorithmException {
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mode = mode.toUpperCase(Locale.ENGLISH);
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int result;
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if (mode.equals("GCM")) {
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result = MODE_GCM;
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} else {
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throw new NoSuchAlgorithmException("Unsupported mode " + mode);
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}
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return result;
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}
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// see JCE spec
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protected void engineSetPadding(String padding)
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throws NoSuchPaddingException {
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// Disallow change of padding for now since currently it's explicitly
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// defined in transformation strings
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throw new NoSuchPaddingException("Unsupported padding " + padding);
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}
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// see JCE spec
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protected int engineGetBlockSize() {
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return 16; // constant; only AES is supported
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}
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// see JCE spec
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protected int engineGetOutputSize(int inputLen) {
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return doFinalLength(inputLen);
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}
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// see JCE spec
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protected byte[] engineGetIV() {
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return (iv == null) ? null : iv.clone();
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}
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// see JCE spec
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protected AlgorithmParameters engineGetParameters() {
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if (encrypt && iv == null && tagLen == -1) {
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switch (blockMode) {
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case MODE_GCM:
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iv = new byte[GCM_DEFAULT_IV_LEN];
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tagLen = GCM_DEFAULT_TAG_LEN;
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break;
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default:
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throw new ProviderException("Unsupported mode");
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}
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random.nextBytes(iv);
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}
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try {
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AlgorithmParameterSpec spec;
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String apAlgo;
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switch (blockMode) {
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case MODE_GCM:
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apAlgo = "GCM";
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spec = new GCMParameterSpec(tagLen << 3, iv);
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break;
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default:
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throw new ProviderException("Unsupported mode");
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}
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AlgorithmParameters params =
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AlgorithmParameters.getInstance(apAlgo);
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params.init(spec);
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return params;
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} catch (GeneralSecurityException e) {
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// NoSuchAlgorithmException, NoSuchProviderException
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// InvalidParameterSpecException
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throw new ProviderException("Could not encode parameters", e);
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}
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}
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// see JCE spec
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protected void engineInit(int opmode, Key key, SecureRandom sr)
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throws InvalidKeyException {
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if (opmode == Cipher.DECRYPT_MODE) {
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throw new InvalidKeyException("Parameters required for decryption");
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}
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updateCalled = false;
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try {
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implInit(opmode, key, null, -1, sr);
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} catch (InvalidAlgorithmParameterException e) {
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throw new InvalidKeyException("init() failed", e);
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}
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}
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// see JCE spec
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protected void engineInit(int opmode, Key key,
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AlgorithmParameterSpec params, SecureRandom sr)
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throws InvalidKeyException, InvalidAlgorithmParameterException {
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if (opmode == Cipher.DECRYPT_MODE && params == null) {
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throw new InvalidAlgorithmParameterException
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("Parameters required for decryption");
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}
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updateCalled = false;
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byte[] ivValue = null;
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int tagLen = -1;
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if (params != null) {
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switch (blockMode) {
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case MODE_GCM:
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if (!(params instanceof GCMParameterSpec)) {
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throw new InvalidAlgorithmParameterException
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("Only GCMParameterSpec is supported");
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}
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ivValue = ((GCMParameterSpec) params).getIV();
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tagLen = ((GCMParameterSpec) params).getTLen() >> 3;
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break;
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default:
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throw new ProviderException("Unsupported mode");
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}
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}
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implInit(opmode, key, ivValue, tagLen, sr);
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}
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// see JCE spec
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protected void engineInit(int opmode, Key key, AlgorithmParameters params,
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SecureRandom sr)
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throws InvalidKeyException, InvalidAlgorithmParameterException {
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if (opmode == Cipher.DECRYPT_MODE && params == null) {
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throw new InvalidAlgorithmParameterException
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("Parameters required for decryption");
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}
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updateCalled = false;
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try {
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AlgorithmParameterSpec paramSpec = null;
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if (params != null) {
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switch (blockMode) {
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case MODE_GCM:
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paramSpec =
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params.getParameterSpec(GCMParameterSpec.class);
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break;
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default:
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throw new ProviderException("Unsupported mode");
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}
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}
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engineInit(opmode, key, paramSpec, sr);
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} catch (InvalidParameterSpecException ex) {
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throw new InvalidAlgorithmParameterException(ex);
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}
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}
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// actual init() implementation
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private void implInit(int opmode, Key key, byte[] iv, int tagLen,
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SecureRandom sr)
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throws InvalidKeyException, InvalidAlgorithmParameterException {
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reset(true);
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if (fixedKeySize != -1 && key.getEncoded().length != fixedKeySize) {
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throw new InvalidKeyException("Key size is invalid");
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}
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P11Key newKey = P11SecretKeyFactory.convertKey(token, key, ALGO);
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switch (opmode) {
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case Cipher.ENCRYPT_MODE:
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encrypt = true;
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requireReinit = Arrays.equals(iv, lastEncIv) &&
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(newKey == lastEncKey);
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if (requireReinit) {
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throw new InvalidAlgorithmParameterException
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("Cannot reuse iv for GCM encryption");
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}
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break;
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case Cipher.DECRYPT_MODE:
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encrypt = false;
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requireReinit = false;
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break;
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default:
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throw new InvalidAlgorithmParameterException
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("Unsupported mode: " + opmode);
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}
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// decryption without parameters is checked in all engineInit() calls
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if (sr != null) {
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this.random = sr;
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}
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if (iv == null && tagLen == -1) {
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// generate default values
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switch (blockMode) {
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case MODE_GCM:
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iv = new byte[GCM_DEFAULT_IV_LEN];
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this.random.nextBytes(iv);
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tagLen = GCM_DEFAULT_TAG_LEN;
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break;
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default:
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throw new ProviderException("Unsupported mode");
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}
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}
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this.iv = iv;
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this.tagLen = tagLen;
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this.p11Key = newKey;
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try {
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initialize();
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} catch (PKCS11Exception e) {
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throw new InvalidKeyException("Could not initialize cipher", e);
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}
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}
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private void cancelOperation() {
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try {
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if (session.hasObjects() == false) {
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session = token.killSession(session);
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return;
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} else {
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// cancel operation by finishing it
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int bufLen = doFinalLength(0);
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byte[] buffer = new byte[bufLen];
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if (encrypt) {
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token.p11.C_Encrypt(session.id(), 0, buffer, 0, bufLen,
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0, buffer, 0, bufLen);
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} else {
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token.p11.C_Decrypt(session.id(), 0, buffer, 0, bufLen,
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0, buffer, 0, bufLen);
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}
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}
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} catch (PKCS11Exception e) {
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throw new ProviderException("Cancel failed", e);
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}
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}
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private void ensureInitialized() throws PKCS11Exception {
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if (initialized && aadBuffer.size() > 0) {
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// need to cancel first to avoid CKR_OPERATION_ACTIVE
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reset(true);
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}
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if (!initialized) {
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initialize();
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}
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}
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private void initialize() throws PKCS11Exception {
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if (p11Key == null) {
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throw new ProviderException(
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"Operation cannot be performed without"
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+ " calling engineInit first");
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}
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if (requireReinit) {
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throw new IllegalStateException
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("Must use either different key or iv for GCM encryption");
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}
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token.ensureValid();
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byte[] aad = (aadBuffer.size() > 0? aadBuffer.toByteArray() : null);
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long p11KeyID = p11Key.getKeyID();
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try {
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CK_MECHANISM mechWithParams;
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switch (blockMode) {
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case MODE_GCM:
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mechWithParams = new CK_MECHANISM(mechanism,
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new CK_GCM_PARAMS(tagLen << 3, iv, aad));
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break;
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default:
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throw new ProviderException("Unsupported mode: " + blockMode);
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}
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if (session == null) {
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session = token.getOpSession();
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}
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if (encrypt) {
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token.p11.C_EncryptInit(session.id(), mechWithParams,
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p11KeyID);
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} else {
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token.p11.C_DecryptInit(session.id(), mechWithParams,
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p11KeyID);
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}
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} catch (PKCS11Exception e) {
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p11Key.releaseKeyID();
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session = token.releaseSession(session);
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throw e;
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} finally {
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dataBuffer.reset();
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aadBuffer.reset();
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}
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initialized = true;
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409 |
}
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410 |
|
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411 |
// if doFinal(inLen) is called, how big does the output buffer have to be?
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412 |
private int doFinalLength(int inLen) {
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413 |
if (inLen < 0) {
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414 |
throw new ProviderException("Invalid negative input length");
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}
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416 |
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int result = inLen + dataBuffer.size();
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if (encrypt) {
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result += tagLen;
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} else {
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// PKCS11Exception: CKR_BUFFER_TOO_SMALL
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//result -= tagLen;
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}
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return result;
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}
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426 |
|
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427 |
// reset the states to the pre-initialized values
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428 |
private void reset(boolean doCancel) {
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429 |
if (!initialized) {
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430 |
return;
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431 |
}
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432 |
try {
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433 |
if (session == null) {
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434 |
return;
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435 |
}
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436 |
if (doCancel && token.explicitCancel) {
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|
437 |
cancelOperation();
|
|
438 |
}
|
|
439 |
} finally {
|
|
440 |
p11Key.releaseKeyID();
|
|
441 |
session = token.releaseSession(session);
|
|
442 |
}
|
|
443 |
initialized = false;
|
|
444 |
}
|
|
445 |
|
|
446 |
// see JCE spec
|
|
447 |
protected byte[] engineUpdate(byte[] in, int inOfs, int inLen) {
|
|
448 |
updateCalled = true;
|
|
449 |
int n = implUpdate(in, inOfs, inLen);
|
|
450 |
return new byte[0];
|
|
451 |
}
|
|
452 |
|
|
453 |
// see JCE spec
|
|
454 |
protected int engineUpdate(byte[] in, int inOfs, int inLen, byte[] out,
|
|
455 |
int outOfs) throws ShortBufferException {
|
|
456 |
updateCalled = true;
|
|
457 |
implUpdate(in, inOfs, inLen);
|
|
458 |
return 0;
|
|
459 |
}
|
|
460 |
|
|
461 |
// see JCE spec
|
|
462 |
@Override
|
|
463 |
protected int engineUpdate(ByteBuffer inBuffer, ByteBuffer outBuffer)
|
|
464 |
throws ShortBufferException {
|
|
465 |
updateCalled = true;
|
|
466 |
implUpdate(inBuffer);
|
|
467 |
return 0;
|
|
468 |
}
|
|
469 |
|
|
470 |
// see JCE spec
|
|
471 |
@Override
|
|
472 |
protected synchronized void engineUpdateAAD(byte[] src, int srcOfs, int srcLen)
|
|
473 |
throws IllegalStateException {
|
|
474 |
if ((src == null) || (srcOfs < 0) || (srcOfs + srcLen > src.length)) {
|
|
475 |
throw new IllegalArgumentException("Invalid AAD");
|
|
476 |
}
|
|
477 |
if (requireReinit) {
|
|
478 |
throw new IllegalStateException
|
|
479 |
("Must use either different key or iv for GCM encryption");
|
|
480 |
}
|
|
481 |
if (p11Key == null) {
|
|
482 |
throw new IllegalStateException("Need to initialize Cipher first");
|
|
483 |
}
|
|
484 |
if (updateCalled) {
|
|
485 |
throw new IllegalStateException
|
|
486 |
("Update has been called; no more AAD data");
|
|
487 |
}
|
|
488 |
aadBuffer.write(src, srcOfs, srcLen);
|
|
489 |
}
|
|
490 |
|
|
491 |
// see JCE spec
|
|
492 |
@Override
|
|
493 |
protected void engineUpdateAAD(ByteBuffer src)
|
|
494 |
throws IllegalStateException {
|
|
495 |
if (src == null) {
|
|
496 |
throw new IllegalArgumentException("Invalid AAD");
|
|
497 |
}
|
|
498 |
byte[] srcBytes = new byte[src.remaining()];
|
|
499 |
src.get(srcBytes);
|
|
500 |
engineUpdateAAD(srcBytes, 0, srcBytes.length);
|
|
501 |
}
|
|
502 |
|
|
503 |
// see JCE spec
|
|
504 |
protected byte[] engineDoFinal(byte[] in, int inOfs, int inLen)
|
|
505 |
throws IllegalBlockSizeException, BadPaddingException {
|
|
506 |
int minOutLen = doFinalLength(inLen);
|
|
507 |
try {
|
|
508 |
byte[] out = new byte[minOutLen];
|
|
509 |
int n = engineDoFinal(in, inOfs, inLen, out, 0);
|
|
510 |
return P11Util.convert(out, 0, n);
|
|
511 |
} catch (ShortBufferException e) {
|
|
512 |
// convert since the output length is calculated by doFinalLength()
|
|
513 |
throw new ProviderException(e);
|
|
514 |
} finally {
|
|
515 |
updateCalled = false;
|
|
516 |
}
|
|
517 |
}
|
|
518 |
// see JCE spec
|
|
519 |
protected int engineDoFinal(byte[] in, int inOfs, int inLen, byte[] out,
|
|
520 |
int outOfs) throws ShortBufferException, IllegalBlockSizeException,
|
|
521 |
BadPaddingException {
|
|
522 |
try {
|
|
523 |
return implDoFinal(in, inOfs, inLen, out, outOfs, out.length - outOfs);
|
|
524 |
} finally {
|
|
525 |
updateCalled = false;
|
|
526 |
}
|
|
527 |
}
|
|
528 |
|
|
529 |
// see JCE spec
|
|
530 |
@Override
|
|
531 |
protected int engineDoFinal(ByteBuffer inBuffer, ByteBuffer outBuffer)
|
|
532 |
throws ShortBufferException, IllegalBlockSizeException,
|
|
533 |
BadPaddingException {
|
|
534 |
try {
|
|
535 |
return implDoFinal(inBuffer, outBuffer);
|
|
536 |
} finally {
|
|
537 |
updateCalled = false;
|
|
538 |
}
|
|
539 |
}
|
|
540 |
|
|
541 |
private int implUpdate(byte[] in, int inOfs, int inLen) {
|
|
542 |
if (inLen > 0) {
|
|
543 |
updateCalled = true;
|
|
544 |
try {
|
|
545 |
ensureInitialized();
|
|
546 |
} catch (PKCS11Exception e) {
|
|
547 |
//e.printStackTrace();
|
|
548 |
reset(false);
|
|
549 |
throw new ProviderException("update() failed", e);
|
|
550 |
}
|
|
551 |
dataBuffer.write(in, inOfs, inLen);
|
|
552 |
}
|
|
553 |
// always 0 as NSS only supports single-part encryption/decryption
|
|
554 |
return 0;
|
|
555 |
}
|
|
556 |
|
|
557 |
private int implUpdate(ByteBuffer inBuf) {
|
|
558 |
int inLen = inBuf.remaining();
|
|
559 |
if (inLen > 0) {
|
|
560 |
try {
|
|
561 |
ensureInitialized();
|
|
562 |
} catch (PKCS11Exception e) {
|
|
563 |
reset(false);
|
|
564 |
throw new ProviderException("update() failed", e);
|
|
565 |
}
|
|
566 |
byte[] data = new byte[inLen];
|
|
567 |
inBuf.get(data);
|
|
568 |
dataBuffer.write(data, 0, data.length);
|
|
569 |
}
|
|
570 |
// always 0 as NSS only supports single-part encryption/decryption
|
|
571 |
return 0;
|
|
572 |
}
|
|
573 |
|
|
574 |
private int implDoFinal(byte[] in, int inOfs, int inLen,
|
|
575 |
byte[] out, int outOfs, int outLen)
|
|
576 |
throws ShortBufferException, IllegalBlockSizeException,
|
|
577 |
BadPaddingException {
|
|
578 |
int requiredOutLen = doFinalLength(inLen);
|
|
579 |
if (outLen < requiredOutLen) {
|
|
580 |
throw new ShortBufferException();
|
|
581 |
}
|
|
582 |
boolean doCancel = true;
|
|
583 |
try {
|
|
584 |
ensureInitialized();
|
|
585 |
if (dataBuffer.size() > 0) {
|
|
586 |
if (in != null && inOfs > 0 && inLen > 0 &&
|
|
587 |
inOfs < (in.length - inLen)) {
|
|
588 |
dataBuffer.write(in, inOfs, inLen);
|
|
589 |
}
|
|
590 |
in = dataBuffer.toByteArray();
|
|
591 |
inOfs = 0;
|
|
592 |
inLen = in.length;
|
|
593 |
}
|
|
594 |
int k = 0;
|
|
595 |
if (encrypt) {
|
|
596 |
k = token.p11.C_Encrypt(session.id(), 0, in, inOfs, inLen,
|
|
597 |
0, out, outOfs, outLen);
|
|
598 |
doCancel = false;
|
|
599 |
} else {
|
|
600 |
// Special handling to match SunJCE provider behavior
|
|
601 |
if (inLen == 0) {
|
|
602 |
return 0;
|
|
603 |
}
|
|
604 |
k = token.p11.C_Decrypt(session.id(), 0, in, inOfs, inLen,
|
|
605 |
0, out, outOfs, outLen);
|
|
606 |
doCancel = false;
|
|
607 |
}
|
|
608 |
return k;
|
|
609 |
} catch (PKCS11Exception e) {
|
|
610 |
doCancel = false;
|
|
611 |
handleException(e);
|
|
612 |
throw new ProviderException("doFinal() failed", e);
|
|
613 |
} finally {
|
|
614 |
if (encrypt) {
|
|
615 |
lastEncKey = this.p11Key;
|
|
616 |
lastEncIv = this.iv;
|
|
617 |
requireReinit = true;
|
|
618 |
}
|
|
619 |
reset(doCancel);
|
|
620 |
}
|
|
621 |
}
|
|
622 |
|
|
623 |
private int implDoFinal(ByteBuffer inBuffer, ByteBuffer outBuffer)
|
|
624 |
throws ShortBufferException, IllegalBlockSizeException,
|
|
625 |
BadPaddingException {
|
|
626 |
int outLen = outBuffer.remaining();
|
|
627 |
int inLen = inBuffer.remaining();
|
|
628 |
|
|
629 |
int requiredOutLen = doFinalLength(inLen);
|
|
630 |
if (outLen < requiredOutLen) {
|
|
631 |
throw new ShortBufferException();
|
|
632 |
}
|
|
633 |
|
|
634 |
boolean doCancel = true;
|
|
635 |
try {
|
|
636 |
ensureInitialized();
|
|
637 |
|
|
638 |
long inAddr = 0;
|
|
639 |
byte[] in = null;
|
|
640 |
int inOfs = 0;
|
|
641 |
if (dataBuffer.size() > 0) {
|
|
642 |
if (inLen > 0) {
|
|
643 |
byte[] temp = new byte[inLen];
|
|
644 |
inBuffer.get(temp);
|
|
645 |
dataBuffer.write(temp, 0, temp.length);
|
|
646 |
}
|
|
647 |
in = dataBuffer.toByteArray();
|
|
648 |
inOfs = 0;
|
|
649 |
inLen = in.length;
|
|
650 |
} else {
|
|
651 |
if (inBuffer instanceof DirectBuffer) {
|
|
652 |
inAddr = ((DirectBuffer) inBuffer).address();
|
|
653 |
inOfs = inBuffer.position();
|
|
654 |
} else {
|
|
655 |
if (inBuffer.hasArray()) {
|
|
656 |
in = inBuffer.array();
|
|
657 |
inOfs = inBuffer.position() + inBuffer.arrayOffset();
|
|
658 |
} else {
|
|
659 |
in = new byte[inLen];
|
|
660 |
inBuffer.get(in);
|
|
661 |
}
|
|
662 |
}
|
|
663 |
}
|
|
664 |
long outAddr = 0;
|
|
665 |
byte[] outArray = null;
|
|
666 |
int outOfs = 0;
|
|
667 |
if (outBuffer instanceof DirectBuffer) {
|
|
668 |
outAddr = ((DirectBuffer) outBuffer).address();
|
|
669 |
outOfs = outBuffer.position();
|
|
670 |
} else {
|
|
671 |
if (outBuffer.hasArray()) {
|
|
672 |
outArray = outBuffer.array();
|
|
673 |
outOfs = outBuffer.position() + outBuffer.arrayOffset();
|
|
674 |
} else {
|
|
675 |
outArray = new byte[outLen];
|
|
676 |
}
|
|
677 |
}
|
|
678 |
|
|
679 |
int k = 0;
|
|
680 |
if (encrypt) {
|
|
681 |
k = token.p11.C_Encrypt(session.id(), inAddr, in, inOfs, inLen,
|
|
682 |
outAddr, outArray, outOfs, outLen);
|
|
683 |
doCancel = false;
|
|
684 |
} else {
|
|
685 |
// Special handling to match SunJCE provider behavior
|
|
686 |
if (inLen == 0) {
|
|
687 |
return 0;
|
|
688 |
}
|
|
689 |
k = token.p11.C_Decrypt(session.id(), inAddr, in, inOfs, inLen,
|
|
690 |
outAddr, outArray, outOfs, outLen);
|
|
691 |
doCancel = false;
|
|
692 |
}
|
|
693 |
outBuffer.position(outBuffer.position() + k);
|
|
694 |
return k;
|
|
695 |
} catch (PKCS11Exception e) {
|
|
696 |
doCancel = false;
|
|
697 |
handleException(e);
|
|
698 |
throw new ProviderException("doFinal() failed", e);
|
|
699 |
} finally {
|
|
700 |
if (encrypt) {
|
|
701 |
lastEncKey = this.p11Key;
|
|
702 |
lastEncIv = this.iv;
|
|
703 |
requireReinit = true;
|
|
704 |
}
|
|
705 |
reset(doCancel);
|
|
706 |
}
|
|
707 |
}
|
|
708 |
|
|
709 |
private void handleException(PKCS11Exception e)
|
|
710 |
throws ShortBufferException, IllegalBlockSizeException,
|
|
711 |
BadPaddingException {
|
|
712 |
long errorCode = e.getErrorCode();
|
|
713 |
if (errorCode == CKR_BUFFER_TOO_SMALL) {
|
|
714 |
throw (ShortBufferException)
|
|
715 |
(new ShortBufferException().initCause(e));
|
|
716 |
} else if (errorCode == CKR_DATA_LEN_RANGE ||
|
|
717 |
errorCode == CKR_ENCRYPTED_DATA_LEN_RANGE) {
|
|
718 |
throw (IllegalBlockSizeException)
|
|
719 |
(new IllegalBlockSizeException(e.toString()).initCause(e));
|
|
720 |
} else if (errorCode == CKR_ENCRYPTED_DATA_INVALID ||
|
|
721 |
// Solaris-specific
|
|
722 |
errorCode == CKR_GENERAL_ERROR) {
|
|
723 |
throw (BadPaddingException)
|
|
724 |
(new BadPaddingException(e.toString()).initCause(e));
|
|
725 |
}
|
|
726 |
}
|
|
727 |
|
|
728 |
// see JCE spec
|
|
729 |
protected byte[] engineWrap(Key key) throws IllegalBlockSizeException,
|
|
730 |
InvalidKeyException {
|
|
731 |
// XXX key wrapping
|
|
732 |
throw new UnsupportedOperationException("engineWrap()");
|
|
733 |
}
|
|
734 |
|
|
735 |
// see JCE spec
|
|
736 |
protected Key engineUnwrap(byte[] wrappedKey, String wrappedKeyAlgorithm,
|
|
737 |
int wrappedKeyType)
|
|
738 |
throws InvalidKeyException, NoSuchAlgorithmException {
|
|
739 |
// XXX key unwrapping
|
|
740 |
throw new UnsupportedOperationException("engineUnwrap()");
|
|
741 |
}
|
|
742 |
|
|
743 |
// see JCE spec
|
|
744 |
@Override
|
|
745 |
protected int engineGetKeySize(Key key) throws InvalidKeyException {
|
|
746 |
int n = P11SecretKeyFactory.convertKey
|
|
747 |
(token, key, ALGO).length();
|
|
748 |
return n;
|
|
749 |
}
|
|
750 |
}
|
|
751 |
|