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1 /* |
1 /* |
2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
2 * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved. |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * |
4 * |
5 * This code is free software; you can redistribute it and/or modify it |
5 * This code is free software; you can redistribute it and/or modify it |
6 * under the terms of the GNU General Public License version 2 only, as |
6 * under the terms of the GNU General Public License version 2 only, as |
7 * published by the Free Software Foundation. Oracle designates this |
7 * published by the Free Software Foundation. Oracle designates this |
25 |
25 |
26 package com.sun.crypto.provider; |
26 package com.sun.crypto.provider; |
27 |
27 |
28 import java.security.InvalidKeyException; |
28 import java.security.InvalidKeyException; |
29 import java.security.ProviderException; |
29 import java.security.ProviderException; |
|
30 import sun.security.util.ArrayUtil; |
30 |
31 |
31 |
32 |
32 /** |
33 /** |
33 * This class represents ciphers in Plaintext Cipher Block Chaining (PCBC) |
34 * This class represents ciphers in Plaintext Cipher Block Chaining (PCBC) |
34 * mode. |
35 * mode. |
134 * @return the length of the encrypted data |
135 * @return the length of the encrypted data |
135 */ |
136 */ |
136 int encrypt(byte[] plain, int plainOffset, int plainLen, |
137 int encrypt(byte[] plain, int plainOffset, int plainLen, |
137 byte[] cipher, int cipherOffset) |
138 byte[] cipher, int cipherOffset) |
138 { |
139 { |
139 if ((plainLen % blockSize) != 0) { |
140 ArrayUtil.blockSizeCheck(plainLen, blockSize); |
140 throw new ProviderException("Internal error in input buffering"); |
141 ArrayUtil.nullAndBoundsCheck(plain, plainOffset, plainLen); |
141 } |
142 ArrayUtil.nullAndBoundsCheck(cipher, cipherOffset, plainLen); |
|
143 |
142 int i; |
144 int i; |
143 int endIndex = plainOffset + plainLen; |
145 int endIndex = plainOffset + plainLen; |
144 |
146 |
145 for (; plainOffset < endIndex; |
147 for (; plainOffset < endIndex; |
146 plainOffset += blockSize, cipherOffset += blockSize) { |
148 plainOffset += blockSize, cipherOffset += blockSize) { |
174 * @return the length of the decrypted data |
176 * @return the length of the decrypted data |
175 */ |
177 */ |
176 int decrypt(byte[] cipher, int cipherOffset, int cipherLen, |
178 int decrypt(byte[] cipher, int cipherOffset, int cipherLen, |
177 byte[] plain, int plainOffset) |
179 byte[] plain, int plainOffset) |
178 { |
180 { |
179 if ((cipherLen % blockSize) != 0) { |
181 ArrayUtil.blockSizeCheck(cipherLen, blockSize); |
180 throw new ProviderException("Internal error in input buffering"); |
182 ArrayUtil.nullAndBoundsCheck(cipher, cipherOffset, cipherLen); |
181 } |
183 ArrayUtil.nullAndBoundsCheck(plain, plainOffset, cipherLen); |
|
184 |
182 int i; |
185 int i; |
183 int endIndex = cipherOffset + cipherLen; |
186 int endIndex = cipherOffset + cipherLen; |
184 |
187 |
185 for (; cipherOffset < endIndex; |
188 for (; cipherOffset < endIndex; |
186 plainOffset += blockSize, cipherOffset += blockSize) { |
189 plainOffset += blockSize, cipherOffset += blockSize) { |