author | valeriep |
Wed, 10 Jul 2019 18:43:45 +0000 | |
changeset 55661 | b32b6ffb221b |
permissions | -rw-r--r-- |
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/* |
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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. |
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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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|
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/** |
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* @test |
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* @bug 8181386 |
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* @summary CipherSpi ByteBuffer to byte array conversion fails for |
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* certain data overlap conditions |
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* @run main CipherByteBufferOverwriteTest 0 false |
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* @run main CipherByteBufferOverwriteTest 0 true |
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* @run main CipherByteBufferOverwriteTest 4 false |
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* @run main CipherByteBufferOverwriteTest 4 true |
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*/ |
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import java.security.spec.AlgorithmParameterSpec; |
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import javax.crypto.Cipher; |
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import javax.crypto.SecretKey; |
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import javax.crypto.spec.IvParameterSpec; |
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import javax.crypto.spec.SecretKeySpec; |
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import java.nio.ByteBuffer; |
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import java.util.Arrays; |
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public class CipherByteBufferOverwriteTest { |
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private static final boolean DEBUG = false; |
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private static final String TRANSFORMATION = "AES/CBC/PKCS5Padding"; |
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// must be larger than the temp array size, i.e. 4096, hardcoded in |
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// javax.crypto.CipherSpi class |
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private static final int PLAINTEXT_SIZE = 8192; |
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// leave room for padding |
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private static final int CIPHERTEXT_BUFFER_SIZE = PLAINTEXT_SIZE + 32; |
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private static final SecretKey KEY = new SecretKeySpec(new byte[16], "AES"); |
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private static final AlgorithmParameterSpec PARAMS = |
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new IvParameterSpec(new byte[16]); |
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private static ByteBuffer inBuf; |
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private static ByteBuffer outBuf; |
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private enum BufferType { |
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ALLOCATE, DIRECT, WRAP; |
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} |
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public static void main(String[] args) throws Exception { |
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int offset = Integer.parseInt(args[0]); |
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boolean useRO = Boolean.parseBoolean(args[1]); |
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// an all-zeros plaintext is the easiest way to demonstrate the issue, |
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// but it fails with any plaintext, of course |
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byte[] expectedPT = new byte[PLAINTEXT_SIZE]; |
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byte[] buf = new byte[offset + CIPHERTEXT_BUFFER_SIZE]; |
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System.arraycopy(expectedPT, 0, buf, 0, PLAINTEXT_SIZE); |
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// generate expected cipher text using byte[] methods |
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Cipher c = Cipher.getInstance(TRANSFORMATION); |
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c.init(Cipher.ENCRYPT_MODE, KEY, PARAMS); |
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byte[] expectedCT = c.doFinal(expectedPT); |
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// Test#1: against ByteBuffer generated with allocate(int) call |
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prepareBuffers(BufferType.ALLOCATE, useRO, buf.length, |
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buf, 0, PLAINTEXT_SIZE, offset); |
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runTest(offset, expectedPT, expectedCT); |
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System.out.println("\tALLOCATE: passed"); |
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// Test#2: against direct ByteBuffer |
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prepareBuffers(BufferType.DIRECT, useRO, buf.length, |
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buf, 0, PLAINTEXT_SIZE, offset); |
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System.out.println("\tDIRECT: passed"); |
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runTest(offset, expectedPT, expectedCT); |
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// Test#3: against ByteBuffer wrapping existing array |
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prepareBuffers(BufferType.WRAP, useRO, buf.length, |
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buf, 0, PLAINTEXT_SIZE, offset); |
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runTest(offset, expectedPT, expectedCT); |
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System.out.println("\tWRAP: passed"); |
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System.out.println("All Tests Passed"); |
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} |
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private static void prepareBuffers(BufferType type, |
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boolean useRO, int bufSz, byte[] in, int inOfs, int inLen, |
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int outOfs) { |
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switch (type) { |
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case ALLOCATE: |
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outBuf = ByteBuffer.allocate(bufSz); |
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inBuf = outBuf.slice(); |
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inBuf.put(in, inOfs, inLen); |
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inBuf.rewind(); |
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inBuf.limit(inLen); |
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outBuf.position(outOfs); |
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break; |
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case DIRECT: |
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outBuf = ByteBuffer.allocateDirect(bufSz); |
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inBuf = outBuf.slice(); |
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inBuf.put(in, inOfs, inLen); |
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122 |
inBuf.rewind(); |
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123 |
inBuf.limit(inLen); |
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124 |
outBuf.position(outOfs); |
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125 |
break; |
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126 |
case WRAP: |
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127 |
if (in.length < bufSz) { |
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128 |
throw new RuntimeException("ERROR: Input buffer too small"); |
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129 |
} |
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130 |
outBuf = ByteBuffer.wrap(in); |
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131 |
inBuf = ByteBuffer.wrap(in, inOfs, inLen); |
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132 |
outBuf.position(outOfs); |
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133 |
break; |
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134 |
} |
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135 |
if (useRO) { |
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136 |
inBuf = inBuf.asReadOnlyBuffer(); |
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137 |
} |
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138 |
if (DEBUG) { |
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139 |
System.out.println("inBuf, pos = " + inBuf.position() + |
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140 |
", capacity = " + inBuf.capacity() + |
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141 |
", limit = " + inBuf.limit() + |
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142 |
", remaining = " + inBuf.remaining()); |
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143 |
System.out.println("outBuf, pos = " + outBuf.position() + |
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144 |
", capacity = " + outBuf.capacity() + |
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145 |
", limit = " + outBuf.limit() + |
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146 |
", remaining = " + outBuf.remaining()); |
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147 |
} |
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148 |
} |
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149 |
|
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150 |
private static void runTest(int ofs, byte[] expectedPT, byte[] expectedCT) |
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151 |
throws Exception { |
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152 |
|
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153 |
Cipher c = Cipher.getInstance(TRANSFORMATION); |
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154 |
c.init(Cipher.ENCRYPT_MODE, KEY, PARAMS); |
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155 |
int ciphertextSize = c.doFinal(inBuf, outBuf); |
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|
156 |
|
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157 |
// read out the encrypted result |
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|
158 |
outBuf.position(ofs); |
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|
159 |
byte[] finalCT = new byte[ciphertextSize]; |
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|
160 |
if (DEBUG) { |
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|
161 |
System.out.println("runTest, ciphertextSize = " + ciphertextSize); |
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|
162 |
System.out.println("runTest, ofs = " + ofs + |
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|
163 |
", remaining = " + finalCT.length + |
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valeriep
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|
164 |
", limit = " + outBuf.limit()); |
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|
165 |
} |
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|
166 |
outBuf.get(finalCT); |
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valeriep
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|
167 |
|
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|
168 |
if (!Arrays.equals(finalCT, expectedCT)) { |
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|
169 |
throw new Exception("ERROR: Ciphertext does not match"); |
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|
170 |
} |
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|
171 |
|
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|
172 |
// now do decryption |
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|
173 |
outBuf.position(ofs); |
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valeriep
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|
174 |
outBuf.limit(ofs + ciphertextSize); |
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|
175 |
|
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|
176 |
c.init(Cipher.DECRYPT_MODE, KEY, PARAMS); |
b32b6ffb221b
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|
177 |
ByteBuffer finalPTBuf = ByteBuffer.allocate( |
b32b6ffb221b
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|
178 |
c.getOutputSize(outBuf.remaining())); |
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|
179 |
c.doFinal(outBuf, finalPTBuf); |
b32b6ffb221b
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valeriep
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|
180 |
|
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|
181 |
// read out the decrypted result |
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valeriep
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|
182 |
finalPTBuf.flip(); |
b32b6ffb221b
8181386: CipherSpi ByteBuffer to byte array conversion fails for certain data overlap conditions
valeriep
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|
183 |
byte[] finalPT = new byte[finalPTBuf.remaining()]; |
b32b6ffb221b
8181386: CipherSpi ByteBuffer to byte array conversion fails for certain data overlap conditions
valeriep
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|
184 |
finalPTBuf.get(finalPT); |
b32b6ffb221b
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valeriep
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diff
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|
185 |
|
b32b6ffb221b
8181386: CipherSpi ByteBuffer to byte array conversion fails for certain data overlap conditions
valeriep
parents:
diff
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|
186 |
if (!Arrays.equals(finalPT, expectedPT)) { |
b32b6ffb221b
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valeriep
parents:
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|
187 |
throw new Exception("ERROR: Plaintext does not match"); |
b32b6ffb221b
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valeriep
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|
188 |
} |
b32b6ffb221b
8181386: CipherSpi ByteBuffer to byte array conversion fails for certain data overlap conditions
valeriep
parents:
diff
changeset
|
189 |
} |
b32b6ffb221b
8181386: CipherSpi ByteBuffer to byte array conversion fails for certain data overlap conditions
valeriep
parents:
diff
changeset
|
190 |
} |
b32b6ffb221b
8181386: CipherSpi ByteBuffer to byte array conversion fails for certain data overlap conditions
valeriep
parents:
diff
changeset
|
191 |