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 |
28 import java.security.InvalidKeyException; |
28 import java.security.InvalidKeyException; |
29 import java.security.ProviderException; |
29 import java.security.ProviderException; |
30 import java.util.Objects; |
30 import java.util.Objects; |
31 |
31 |
32 import jdk.internal.HotSpotIntrinsicCandidate; |
32 import jdk.internal.HotSpotIntrinsicCandidate; |
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33 import sun.security.util.ArrayUtil; |
33 |
34 |
34 |
35 |
35 /** |
36 /** |
36 * This class represents ciphers in cipher block chaining (CBC) mode. |
37 * This class represents ciphers in cipher block chaining (CBC) mode. |
37 * |
38 * |
143 int encrypt(byte[] plain, int plainOffset, int plainLen, |
144 int encrypt(byte[] plain, int plainOffset, int plainLen, |
144 byte[] cipher, int cipherOffset) { |
145 byte[] cipher, int cipherOffset) { |
145 if (plainLen <= 0) { |
146 if (plainLen <= 0) { |
146 return plainLen; |
147 return plainLen; |
147 } |
148 } |
148 cryptBlockSizeCheck(plainLen); |
149 ArrayUtil.blockSizeCheck(plainLen, blockSize); |
149 cryptNullAndBoundsCheck(plain, plainOffset, plainLen); |
150 ArrayUtil.nullAndBoundsCheck(plain, plainOffset, plainLen); |
150 cryptNullAndBoundsCheck(cipher, cipherOffset, plainLen); |
151 ArrayUtil.nullAndBoundsCheck(cipher, cipherOffset, plainLen); |
151 return implEncrypt(plain, plainOffset, plainLen, |
152 return implEncrypt(plain, plainOffset, plainLen, |
152 cipher, cipherOffset); |
153 cipher, cipherOffset); |
153 } |
154 } |
154 |
155 |
155 @HotSpotIntrinsicCandidate |
156 @HotSpotIntrinsicCandidate |
194 int decrypt(byte[] cipher, int cipherOffset, int cipherLen, |
195 int decrypt(byte[] cipher, int cipherOffset, int cipherLen, |
195 byte[] plain, int plainOffset) { |
196 byte[] plain, int plainOffset) { |
196 if (cipherLen <= 0) { |
197 if (cipherLen <= 0) { |
197 return cipherLen; |
198 return cipherLen; |
198 } |
199 } |
199 cryptBlockSizeCheck(cipherLen); |
200 ArrayUtil.blockSizeCheck(cipherLen, blockSize); |
200 cryptNullAndBoundsCheck(cipher, cipherOffset, cipherLen); |
201 ArrayUtil.nullAndBoundsCheck(cipher, cipherOffset, cipherLen); |
201 cryptNullAndBoundsCheck(plain, plainOffset, cipherLen); |
202 ArrayUtil.nullAndBoundsCheck(plain, plainOffset, cipherLen); |
202 return implDecrypt(cipher, cipherOffset, cipherLen, plain, plainOffset); |
203 return implDecrypt(cipher, cipherOffset, cipherLen, plain, plainOffset); |
203 } |
204 } |
204 |
205 |
205 @HotSpotIntrinsicCandidate |
206 @HotSpotIntrinsicCandidate |
206 private int implDecrypt(byte[] cipher, int cipherOffset, int cipherLen, |
207 private int implDecrypt(byte[] cipher, int cipherOffset, int cipherLen, |
216 } |
217 } |
217 System.arraycopy(cipher, cipherOffset, r, 0, blockSize); |
218 System.arraycopy(cipher, cipherOffset, r, 0, blockSize); |
218 } |
219 } |
219 return cipherLen; |
220 return cipherLen; |
220 } |
221 } |
221 |
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222 private void cryptBlockSizeCheck(int len) { |
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223 if ((len % blockSize) != 0) { |
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224 throw new ProviderException("Internal error in input buffering"); |
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225 } |
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226 } |
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227 |
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228 private static void cryptNullAndBoundsCheck(byte[] array, int offset, int len) { |
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229 Objects.requireNonNull(array); |
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230 |
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231 if (offset < 0 || offset >= array.length) { |
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232 throw new ArrayIndexOutOfBoundsException(offset); |
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233 } |
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234 |
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235 int endIndex = offset + len - 1; |
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236 if (endIndex < 0 || endIndex >= array.length) { |
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237 throw new ArrayIndexOutOfBoundsException(endIndex); |
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238 } |
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239 } |
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240 } |
222 } |