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Java utility collections, development by Nervousync Studio (NSYC)
/*
* Licensed to the Nervousync Studio (NSYC) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.nervousync.zip.engine;
import org.nervousync.zip.models.AESExtraDataRecord;
import org.nervousync.zip.models.header.utils.HeaderOperator;
import org.nervousync.exceptions.zip.ZipException;
import java.nio.charset.StandardCharsets;
import java.util.List;
/**
* AES Engine
*
* @author Steven Wee [email protected]
* @version $Revision : 1.0 $ $Date: Nov 30, 2017 2:55:56 PM $
*/
public final class AESEngine {
private int rounds;
private int[][] workingKeys = null;
private int C0, C1, C2, C3;
/**
* Instantiates a new Aes engine.
*
* @param keys the keys
* @throws ZipException the zip exception
*/
public AESEngine(byte[] keys) throws ZipException {
this.generateWorkingKeys(keys);
}
/**
* Process block.
*
* @param in the in
* @param out the out
* @throws ZipException the zip exception
*/
public void processBlock(byte[] in, byte[] out) throws ZipException {
if (this.workingKeys == null) {
throw new ZipException("AES engine not initialized");
}
if (in.length < 16) {
throw new ZipException("Input buffer too short!");
}
if (out.length < 16) {
throw new ZipException("Output buffer too short!");
}
this.stateIn(in);
this.encryptBlock();
this.stateOut(out);
}
/**
* Process header.
*
* @param aesExtraDataRecord the aes extra data record
* @param headerBytesList the header bytes list
*/
public static void processHeader(AESExtraDataRecord aesExtraDataRecord, List headerBytesList) {
HeaderOperator.appendShortToArrayList((short) aesExtraDataRecord.getSignature(), headerBytesList);
HeaderOperator.appendShortToArrayList((short) aesExtraDataRecord.getDataSize(), headerBytesList);
HeaderOperator.appendShortToArrayList((short) aesExtraDataRecord.getVersionNumber(), headerBytesList);
HeaderOperator.copyByteArrayToList(aesExtraDataRecord.getVendorID().getBytes(StandardCharsets.UTF_8), headerBytesList);
byte[] aesStrengthBytes = new byte[1];
aesStrengthBytes[0] = (byte) aesExtraDataRecord.getAesStrength();
HeaderOperator.copyByteArrayToList(aesStrengthBytes, headerBytesList);
HeaderOperator.appendShortToArrayList((short) aesExtraDataRecord.getCompressionMethod(), headerBytesList);
}
private void stateIn(byte[] bytes) {
int index = 0;
this.C0 = (bytes[index++] & 0xFF);
this.C0 |= (bytes[index++] & 0xFF) << 8;
this.C0 |= (bytes[index++] & 0xFF) << 16;
this.C0 |= bytes[index++] << 24;
this.C1 = (bytes[index++] & 0xFF);
this.C1 |= (bytes[index++] & 0xFF) << 8;
this.C1 |= (bytes[index++] & 0xFF) << 16;
this.C1 |= bytes[index++] << 24;
this.C2 = (bytes[index++] & 0xFF);
this.C2 |= (bytes[index++] & 0xFF) << 8;
this.C2 |= (bytes[index++] & 0xFF) << 16;
this.C2 |= bytes[index++] << 24;
this.C3 = (bytes[index++] & 0xFF);
this.C3 |= (bytes[index++] & 0xFF) << 8;
this.C3 |= (bytes[index++] & 0xFF) << 16;
this.C3 |= bytes[index] << 24;
}
private void encryptBlock() {
int r = 1;
this.C0 ^= this.workingKeys[0][0];
this.C1 ^= this.workingKeys[0][1];
this.C2 ^= this.workingKeys[0][2];
this.C3 ^= this.workingKeys[0][3];
int[] calcBlock;
while (r < this.rounds - 1) {
calcBlock = this.calcBlock(r);
r++;
this.calcByT0(calcBlock, r);
r++;
}
calcBlock = this.calcBlock(r);
r++;
this.calcBySubWord(calcBlock, r);
}
private void calcBySubWord(int[] calcBlock, int indexKey) {
this.C0 = (SUB_WORD_TABLE[calcBlock[0] & 255] & 255) ^ ((SUB_WORD_TABLE[(calcBlock[1] >> 8) & 255] & 255) << 8)
^ ((SUB_WORD_TABLE[(calcBlock[2] >> 16) & 255] & 255) << 16) ^ (SUB_WORD_TABLE[(calcBlock[3] >> 24) & 255] << 24)
^ this.workingKeys[indexKey][0];
this.C1 = (SUB_WORD_TABLE[calcBlock[1] & 255] & 255) ^ ((SUB_WORD_TABLE[(calcBlock[2] >> 8) & 255] & 255) << 8)
^ ((SUB_WORD_TABLE[(calcBlock[3] >> 16) & 255] & 255) << 16) ^ (SUB_WORD_TABLE[(calcBlock[0] >> 24) & 255] << 24)
^ this.workingKeys[indexKey][1];
this.C2 = (SUB_WORD_TABLE[calcBlock[2] & 255] & 255) ^ ((SUB_WORD_TABLE[(calcBlock[3] >> 8) & 255] & 255) << 8)
^ ((SUB_WORD_TABLE[(calcBlock[0] >> 16) & 255] & 255) << 16) ^ (SUB_WORD_TABLE[(calcBlock[1] >> 24) & 255] << 24)
^ this.workingKeys[indexKey][2];
this.C3 = (SUB_WORD_TABLE[calcBlock[3] & 255] & 255) ^ ((SUB_WORD_TABLE[(calcBlock[0] >> 8) & 255] & 255) << 8)
^ ((SUB_WORD_TABLE[(calcBlock[1] >> 16) & 255] & 255) << 16) ^ (SUB_WORD_TABLE[(calcBlock[2] >> 24) & 255] << 24)
^ this.workingKeys[indexKey][3];
}
private int[] calcBlock(int r) {
return new int[]{
T0[this.C0 & 255] ^ shift(T0[(this.C1 >> 8) & 255], 24) ^ shift(T0[(this.C2 >> 16) & 255], 16)
^ shift(T0[(this.C3 >> 24) & 255], 8) ^ this.workingKeys[r][0],
T0[this.C1 & 255] ^ shift(T0[(this.C2 >> 8) & 255], 24) ^ shift(T0[(this.C3 >> 16) & 255], 16)
^ shift(T0[(this.C0 >> 24) & 255], 8) ^ this.workingKeys[r][1],
T0[this.C2 & 255] ^ shift(T0[(this.C3 >> 8) & 255], 24) ^ shift(T0[(this.C0 >> 16) & 255], 16)
^ shift(T0[(this.C1 >> 24) & 255], 8) ^ this.workingKeys[r][2],
T0[this.C3 & 255] ^ shift(T0[(this.C0 >> 8) & 255], 24) ^ shift(T0[(this.C1 >> 16) & 255], 16)
^ shift(T0[(this.C2 >> 24) & 255], 8) ^ this.workingKeys[r][3]};
}
private void calcByT0(int[] calcBlock, int indexKey) {
this.C0 = T0[calcBlock[0] & 255] ^ shift(T0[(calcBlock[1] >> 8) & 255], 24) ^ shift(T0[(calcBlock[2] >> 16) & 255], 16)
^ shift(T0[(calcBlock[3] >> 24) & 255], 8) ^ this.workingKeys[indexKey][0];
this.C1 = T0[calcBlock[1] & 255] ^ shift(T0[(calcBlock[2] >> 8) & 255], 24) ^ shift(T0[(calcBlock[3] >> 16) & 255], 16)
^ shift(T0[(calcBlock[0] >> 24) & 255], 8) ^ this.workingKeys[indexKey][1];
this.C2 = T0[calcBlock[2] & 255] ^ shift(T0[(calcBlock[3] >> 8) & 255], 24) ^ shift(T0[(calcBlock[0] >> 16) & 255], 16)
^ shift(T0[(calcBlock[1] >> 24) & 255], 8) ^ this.workingKeys[indexKey][2];
this.C3 = T0[calcBlock[3] & 255] ^ shift(T0[(calcBlock[0] >> 8) & 255], 24) ^ shift(T0[(calcBlock[1] >> 16) & 255], 16)
^ shift(T0[(calcBlock[2] >> 24) & 255], 8) ^ this.workingKeys[indexKey][3];
}
private void stateOut(byte[] bytes) {
int index = 0;
bytes[index++] = (byte)this.C0;
bytes[index++] = (byte)(this.C0 >> 8);
bytes[index++] = (byte)(this.C0 >> 16);
bytes[index++] = (byte)(this.C0 >> 24);
bytes[index++] = (byte)this.C1;
bytes[index++] = (byte)(this.C1 >> 8);
bytes[index++] = (byte)(this.C1 >> 16);
bytes[index++] = (byte)(this.C1 >> 24);
bytes[index++] = (byte)this.C2;
bytes[index++] = (byte)(this.C2 >> 8);
bytes[index++] = (byte)(this.C2 >> 16);
bytes[index++] = (byte)(this.C2 >> 24);
bytes[index++] = (byte)this.C3;
bytes[index++] = (byte)(this.C3 >> 8);
bytes[index++] = (byte)(this.C3 >> 16);
bytes[index] = (byte)(this.C3 >> 24);
}
private void generateWorkingKeys(byte[] keys) throws ZipException {
int kc = keys.length / 4;
if (((kc != 4) && (kc != 6) && (kc != 8)) || ((kc * 4) != keys.length)) {
throw new ZipException("Invalid key length (not 128/192/256)");
}
this.rounds = kc + 6;
this.workingKeys = new int[this.rounds + 1][4];
int t = 0, i = 0;
while (i < keys.length) {
this.workingKeys[t >> 2][t & 3] = (keys[i] & 0xFF) | ((keys[i + 1] & 0xFF) << 8) | ((keys[i + 2] & 0xFF) << 16) | (keys[i + 3] << 24);
i += 4;
t++;
}
int k = (this.rounds + 1) << 2;
for (i = kc ; i < k ; i++) {
int temp = this.workingKeys[(i - 1) >> 2][(i - 1) & 3];
if ((i % kc) == 0) {
temp = this.subWord(this.shift(temp, 8)) ^ R_CON[(i / kc) - 1];
} else if ((kc > 6) && ((i % kc) == 4)) {
temp = this.subWord(temp);
}
this.workingKeys[i >> 2][i & 3] = this.workingKeys[(i - kc) >> 2][(i - kc) & 3] ^ temp;
}
}
private int shift(int r, int shift) {
return (r >>> shift) | (r << -shift);
}
private int subWord(int value) {
return (SUB_WORD_TABLE[value & 255] & 255 | ((SUB_WORD_TABLE[(value >> 8) & 255] & 255) << 8)
| ((SUB_WORD_TABLE[(value >> 16) & 255] & 255) << 16) | SUB_WORD_TABLE[(value >> 24) & 255] << 24);
}
private static final byte[] SUB_WORD_TABLE = {
(byte)99, (byte)124, (byte)119, (byte)123, (byte)242, (byte)107, (byte)111, (byte)197,
(byte)48, (byte)1, (byte)103, (byte)43, (byte)254, (byte)215, (byte)171, (byte)118,
(byte)202, (byte)130, (byte)201, (byte)125, (byte)250, (byte)89, (byte)71, (byte)240,
(byte)173, (byte)212, (byte)162, (byte)175, (byte)156, (byte)164, (byte)114, (byte)192,
(byte)183, (byte)253, (byte)147, (byte)38, (byte)54, (byte)63, (byte)247, (byte)204,
(byte)52, (byte)165, (byte)229, (byte)241, (byte)113, (byte)216, (byte)49, (byte)21,
(byte)4, (byte)199, (byte)35, (byte)195, (byte)24, (byte)150, (byte)5, (byte)154,
(byte)7, (byte)18, (byte)128, (byte)226, (byte)235, (byte)39, (byte)178, (byte)117,
(byte)9, (byte)131, (byte)44, (byte)26, (byte)27, (byte)110, (byte)90, (byte)160,
(byte)82, (byte)59, (byte)214, (byte)179, (byte)41, (byte)227, (byte)47, (byte)132,
(byte)83, (byte)209, (byte)0, (byte)237, (byte)32, (byte)252, (byte)177, (byte)91,
(byte)106, (byte)203, (byte)190, (byte)57, (byte)74, (byte)76, (byte)88, (byte)207,
(byte)208, (byte)239, (byte)170, (byte)251, (byte)67, (byte)77, (byte)51, (byte)133,
(byte)69, (byte)249, (byte)2, (byte)127, (byte)80, (byte)60, (byte)159, (byte)168,
(byte)81, (byte)163, (byte)64, (byte)143, (byte)146, (byte)157, (byte)56, (byte)245,
(byte)188, (byte)182, (byte)218, (byte)33, (byte)16, (byte)255, (byte)243, (byte)210,
(byte)205, (byte)12, (byte)19, (byte)236, (byte)95, (byte)151, (byte)68, (byte)23,
(byte)196, (byte)167, (byte)126, (byte)61, (byte)100, (byte)93, (byte)25, (byte)115,
(byte)96, (byte)129, (byte)79, (byte)220, (byte)34, (byte)42, (byte)144, (byte)136,
(byte)70, (byte)238, (byte)184, (byte)20, (byte)222, (byte)94, (byte)11, (byte)219,
(byte)224, (byte)50, (byte)58, (byte)10, (byte)73, (byte)6, (byte)36, (byte)92,
(byte)194, (byte)211, (byte)172, (byte)98, (byte)145, (byte)149, (byte)228, (byte)121,
(byte)231, (byte)200, (byte)55, (byte)109, (byte)141, (byte)213, (byte)78, (byte)169,
(byte)108, (byte)86, (byte)244, (byte)234, (byte)101, (byte)122, (byte)174, (byte)8,
(byte)186, (byte)120, (byte)37, (byte)46, (byte)28, (byte)166, (byte)180, (byte)198,
(byte)232, (byte)221, (byte)116, (byte)31, (byte)75, (byte)189, (byte)139, (byte)138,
(byte)112, (byte)62, (byte)181, (byte)102, (byte)72, (byte)3, (byte)246, (byte)14,
(byte)97, (byte)53, (byte)87, (byte)185, (byte)134, (byte)193, (byte)29, (byte)158,
(byte)225, (byte)248, (byte)152, (byte)17, (byte)105, (byte)217, (byte)142, (byte)148,
(byte)155, (byte)30, (byte)135, (byte)233, (byte)206, (byte)85, (byte)40, (byte)223,
(byte)140, (byte)161, (byte)137, (byte)13, (byte)191, (byte)230, (byte)66, (byte)104,
(byte)65, (byte)153, (byte)45, (byte)15, (byte)176, (byte)84, (byte)187, (byte)22,
};
private static final int[] R_CON = {
0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a,
0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91
};
private static final int[] T0 = {
0xa56363c6, 0x847c7cf8, 0x997777ee, 0x8d7b7bf6, 0x0df2f2ff, 0xbd6b6bd6, 0xb16f6fde, 0x54c5c591,
0x50303060, 0x03010102, 0xa96767ce, 0x7d2b2b56, 0x19fefee7, 0x62d7d7b5, 0xe6abab4d, 0x9a7676ec,
0x45caca8f, 0x9d82821f, 0x40c9c989, 0x877d7dfa, 0x15fafaef, 0xeb5959b2, 0xc947478e, 0x0bf0f0fb,
0xecadad41, 0x67d4d4b3, 0xfda2a25f, 0xeaafaf45, 0xbf9c9c23, 0xf7a4a453, 0x967272e4, 0x5bc0c09b,
0xc2b7b775, 0x1cfdfde1, 0xae93933d, 0x6a26264c, 0x5a36366c, 0x413f3f7e, 0x02f7f7f5, 0x4fcccc83,
0x5c343468, 0xf4a5a551, 0x34e5e5d1, 0x08f1f1f9, 0x937171e2, 0x73d8d8ab, 0x53313162, 0x3f15152a,
0x0c040408, 0x52c7c795, 0x65232346, 0x5ec3c39d, 0x28181830, 0xa1969637, 0x0f05050a, 0xb59a9a2f,
0x0907070e, 0x36121224, 0x9b80801b, 0x3de2e2df, 0x26ebebcd, 0x6927274e, 0xcdb2b27f, 0x9f7575ea,
0x1b090912, 0x9e83831d, 0x742c2c58, 0x2e1a1a34, 0x2d1b1b36, 0xb26e6edc, 0xee5a5ab4, 0xfba0a05b,
0xf65252a4, 0x4d3b3b76, 0x61d6d6b7, 0xceb3b37d, 0x7b292952, 0x3ee3e3dd, 0x712f2f5e, 0x97848413,
0xf55353a6, 0x68d1d1b9, 0x00000000, 0x2cededc1, 0x60202040, 0x1ffcfce3, 0xc8b1b179, 0xed5b5bb6,
0xbe6a6ad4, 0x46cbcb8d, 0xd9bebe67, 0x4b393972, 0xde4a4a94, 0xd44c4c98, 0xe85858b0, 0x4acfcf85,
0x6bd0d0bb, 0x2aefefc5, 0xe5aaaa4f, 0x16fbfbed, 0xc5434386, 0xd74d4d9a, 0x55333366, 0x94858511,
0xcf45458a, 0x10f9f9e9, 0x06020204, 0x817f7ffe, 0xf05050a0, 0x443c3c78, 0xba9f9f25, 0xe3a8a84b,
0xf35151a2, 0xfea3a35d, 0xc0404080, 0x8a8f8f05, 0xad92923f, 0xbc9d9d21, 0x48383870, 0x04f5f5f1,
0xdfbcbc63, 0xc1b6b677, 0x75dadaaf, 0x63212142, 0x30101020, 0x1affffe5, 0x0ef3f3fd, 0x6dd2d2bf,
0x4ccdcd81, 0x140c0c18, 0x35131326, 0x2fececc3, 0xe15f5fbe, 0xa2979735, 0xcc444488, 0x3917172e,
0x57c4c493, 0xf2a7a755, 0x827e7efc, 0x473d3d7a, 0xac6464c8, 0xe75d5dba, 0x2b191932, 0x957373e6,
0xa06060c0, 0x98818119, 0xd14f4f9e, 0x7fdcdca3, 0x66222244, 0x7e2a2a54, 0xab90903b, 0x8388880b,
0xca46468c, 0x29eeeec7, 0xd3b8b86b, 0x3c141428, 0x79dedea7, 0xe25e5ebc, 0x1d0b0b16, 0x76dbdbad,
0x3be0e0db, 0x56323264, 0x4e3a3a74, 0x1e0a0a14, 0xdb494992, 0x0a06060c, 0x6c242448, 0xe45c5cb8,
0x5dc2c29f, 0x6ed3d3bd, 0xefacac43, 0xa66262c4, 0xa8919139, 0xa4959531, 0x37e4e4d3, 0x8b7979f2,
0x32e7e7d5, 0x43c8c88b, 0x5937376e, 0xb76d6dda, 0x8c8d8d01, 0x64d5d5b1, 0xd24e4e9c, 0xe0a9a949,
0xb46c6cd8, 0xfa5656ac, 0x07f4f4f3, 0x25eaeacf, 0xaf6565ca, 0x8e7a7af4, 0xe9aeae47, 0x18080810,
0xd5baba6f, 0x887878f0, 0x6f25254a, 0x722e2e5c, 0x241c1c38, 0xf1a6a657, 0xc7b4b473, 0x51c6c697,
0x23e8e8cb, 0x7cdddda1, 0x9c7474e8, 0x211f1f3e, 0xdd4b4b96, 0xdcbdbd61, 0x868b8b0d, 0x858a8a0f,
0x907070e0, 0x423e3e7c, 0xc4b5b571, 0xaa6666cc, 0xd8484890, 0x05030306, 0x01f6f6f7, 0x120e0e1c,
0xa36161c2, 0x5f35356a, 0xf95757ae, 0xd0b9b969, 0x91868617, 0x58c1c199, 0x271d1d3a, 0xb99e9e27,
0x38e1e1d9, 0x13f8f8eb, 0xb398982b, 0x33111122, 0xbb6969d2, 0x70d9d9a9, 0x898e8e07, 0xa7949433,
0xb69b9b2d, 0x221e1e3c, 0x92878715, 0x20e9e9c9, 0x49cece87, 0xff5555aa, 0x78282850, 0x7adfdfa5,
0x8f8c8c03, 0xf8a1a159, 0x80898909, 0x170d0d1a, 0xdabfbf65, 0x31e6e6d7, 0xc6424284, 0xb86868d0,
0xc3414182, 0xb0999929, 0x772d2d5a, 0x110f0f1e, 0xcbb0b07b, 0xfc5454a8, 0xd6bbbb6d, 0x3a16162c
};
}