0N/A/*
2362N/A * Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
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0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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0N/A */
0N/A
0N/Apackage sun.security.krb5.internal.crypto;
0N/A
0N/Aimport sun.security.krb5.KrbCryptoException;
0N/Aimport sun.security.krb5.internal.*;
0N/Aimport java.security.GeneralSecurityException;
0N/Aimport sun.security.krb5.EncryptedData;
0N/Aimport sun.security.krb5.Checksum;
0N/A
0N/A/*
0N/A * This class encapsulates the encryption type for AES128
0N/A *
0N/A * @author Seema Malkani
0N/A */
0N/A
0N/Apublic final class Aes128CtsHmacSha1EType extends EType {
0N/A
0N/A public int eType() {
0N/A return EncryptedData.ETYPE_AES128_CTS_HMAC_SHA1_96;
0N/A }
0N/A
0N/A public int minimumPadSize() {
0N/A return 0;
0N/A }
0N/A
0N/A public int confounderSize() {
0N/A return blockSize();
0N/A }
0N/A
0N/A public int checksumType() {
0N/A return Checksum.CKSUMTYPE_HMAC_SHA1_96_AES128;
0N/A }
0N/A
0N/A public int checksumSize() {
0N/A return Aes128.getChecksumLength();
0N/A }
0N/A
0N/A public int blockSize() {
0N/A return 16;
0N/A }
0N/A
0N/A public int keyType() {
0N/A return Krb5.KEYTYPE_AES;
0N/A }
0N/A
0N/A public int keySize() {
0N/A return 16; // bytes
0N/A }
0N/A
0N/A public byte[] encrypt(byte[] data, byte[] key, int usage)
0N/A throws KrbCryptoException {
0N/A byte[] ivec = new byte[blockSize()];
0N/A return encrypt(data, key, ivec, usage);
0N/A }
0N/A
0N/A public byte[] encrypt(byte[] data, byte[] key, byte[] ivec, int usage)
0N/A throws KrbCryptoException {
0N/A try {
0N/A return Aes128.encrypt(key, usage, ivec, data, 0, data.length);
0N/A } catch (GeneralSecurityException e) {
0N/A KrbCryptoException ke = new KrbCryptoException(e.getMessage());
0N/A ke.initCause(e);
0N/A throw ke;
0N/A }
0N/A }
0N/A
0N/A public byte[] decrypt(byte[] cipher, byte[] key, int usage)
0N/A throws KrbApErrException, KrbCryptoException {
0N/A byte[] ivec = new byte[blockSize()];
0N/A return decrypt(cipher, key, ivec, usage);
0N/A }
0N/A
0N/A public byte[] decrypt(byte[] cipher, byte[] key, byte[] ivec, int usage)
0N/A throws KrbApErrException, KrbCryptoException {
0N/A try {
0N/A return Aes128.decrypt(key, usage, ivec, cipher, 0, cipher.length);
0N/A } catch (GeneralSecurityException e) {
0N/A KrbCryptoException ke = new KrbCryptoException(e.getMessage());
0N/A ke.initCause(e);
0N/A throw ke;
0N/A }
0N/A }
0N/A
0N/A // Override default, because our decrypted data does not return confounder
0N/A // Should eventually get rid of EType.decryptedData and
0N/A // EncryptedData.decryptedData altogether
0N/A public byte[] decryptedData(byte[] data) {
0N/A return data;
0N/A }
0N/A}