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1 package com.daffodilwoods.daffodildb.server.datasystem.encryptdecrypt;
2
3 import java.lang.reflect.Constructor  ;
4 import java.lang.reflect.*;
5 import com.daffodilwoods.daffodildb.server.serversystem._Server;
6 import com.daffodilwoods.database.resource.DException;
7
8 public class EDUtils
9 {
10
11 public EDUtils()
12 {
13 }
14
15 public static void generateRandomBlock(byte bytes[], int startPointer, int endPointer)
16 {
17 for(int i = startPointer; i < startPointer + endPointer; i++)
18 bytes[i] = (byte)(int)(Math.random() * 256D);
19
20 }
21
22
23 public static void generateZeroBlock(byte bytes[], int startPointer, int endPointer)
24 {
25 for(int i = startPointer; i < startPointer + endPointer; i++)
26 bytes[i] = 0;
27
28 }
29
30 public static void ConvertShortsToBytes(int array[], int i, byte bytes[], int j, int k)
31 {
32 for(int l = 0; l < k; l++)
33 {
34 bytes[j + l * 2] = (byte)(array[i + l] >>> 8);
35 bytes[j + l * 2 + 1] = (byte)array[i + l];
36 }
37
38 }
39
40 public static void generateRandomBlock(byte bytes[])
41 {
42 generateRandomBlock(bytes, 0, bytes.length);
43 }
44
45 public static void generateXorBlock(byte byte0[], int i, byte byte1[], int j, byte byte2[], int k, int loopCounter)
46 {
47 for(int i1 = 0; i1 < loopCounter; i1++)
48 byte2[k + i1] = (byte)(byte0[i + i1] ^ byte1[j + i1]);
49
50 }
51
52 public static void generateCopyBlock(byte byte0[], int i, byte byte1[], int j, int k)
53 {
54 for(int l = 0; l < k; l++)
55 byte1[j + l] = byte0[i + l];
56
57 }
58
59 public static void generateCopyBlock(byte byte0[], byte byte1[])
60 {
61 generateCopyBlock(byte0, 0, byte1, 0, byte0.length);
62 }
63
64 public static boolean generateClone(byte byte0[], int i, byte byte1[], int j, int k)
65 {
66 for(int l = 0; l < k; l++)
67 if(byte0[i + l] != byte1[j + l])
68 return false;
69
70 return true;
71 }
72
73 public static boolean generateClone(byte byte0[], byte byte1[])
74 {
75 return generateClone(byte0, 0, byte1, 0, byte0.length);
76 }
77
78 public static void fillBlock(byte bytes[], int i, byte byte0, int j)
79 {
80 for(int k = i; k < i + j; k++)
81 bytes[k] = byte0;
82
83 }
84
85 public static void fillBlock(byte bytes[], byte byte0)
86 {
87 fillBlock(bytes, 0, byte0, bytes.length);
88 }
89
90 public static void convertBytesToInts(byte bytes[], int i, int array[], int j, int k)
91 {
92 for(int l = 0; l < k; l++)
93 array[j + l] = (bytes[i + l * 4] & 0xff) << 24 | (bytes[i + l * 4 + 1] & 0xff) << 16 | (bytes[i + l * 4 + 2] & 0xff) << 8 | bytes[i + l * 4 + 3] & 0xff;
94
95 }
96
97 public static void convertIntsToBytes(int array[], int i, byte bytes[], int j, int k)
98 {
99 for(int l = 0; l < k; l++)
100 {
101 bytes[j + l * 4] = (byte)(array[i + l] >>> 24);
102 bytes[j + l * 4 + 1] = (byte)(array[i + l] >>> 16);
103 bytes[j + l * 4 + 2] = (byte)(array[i + l] >>> 8);
104 bytes[j + l * 4 + 3] = (byte)array[i + l];
105 }
106
107 }
108
109 public static void convertBytesToShorts(byte bytes[], int i, int array[], int j, int k)
110 {
111 for(int l = 0; l < k; l++)
112 array[j + l] = (bytes[i + l * 2] & 0xff) << 8 | bytes[i + l * 2 + 1] & 0xff;
113
114 }
115
116
117 public static void generateXorBlock(byte byte0[], byte byte1[], byte byte2[])
118 {
119 generateXorBlock(byte0, 0, byte1, 0, byte2, 0, byte0.length);
120 }
121
122 public static String toString(byte bytes[], int startPointer, int endPointer)
123 {
124 String s = "0123456789abcdef";
125 StringBuffer stringbuffer = new StringBuffer ();
126 for(int k = startPointer; k < startPointer + endPointer; k++)
127 {
128 stringbuffer.append(s.charAt(bytes[k] >>> 4 & 0xf));
129 stringbuffer.append(s.charAt(bytes[k] & 0xf));
130 }
131
132 return "[" + stringbuffer + "]";
133 }
134
135
136 public static void zeroBlock(byte bytes[])
137 {
138 generateZeroBlock(bytes, 0, bytes.length);
139 }
140
141
142 public static EDBlockCipher getEncryptDecryptCipher(String algoName, String key)
143 throws DException{
144 try {
145 Class c1 = null;
146 if (algoName.trim().equalsIgnoreCase("aes")) {
147 c1 = Class.forName("com.daffodilwoods.daffodildb.server.datasystem.encryptdecrypt.EDRijndaelCipher");
148 }
149 if (algoName.trim().equalsIgnoreCase("blowfish")) {
150 c1 = Class.forName("com.daffodilwoods.daffodildb.server.datasystem.encryptdecrypt.EDBlowfishCipher");
151 }
152 if (algoName.trim().equalsIgnoreCase("tea")) {
153 c1 = Class.forName("com.daffodilwoods.daffodildb.server.datasystem.encryptdecrypt.EDTeaCipher");
154 }
155 if (algoName.trim().equalsIgnoreCase("des")) {
156 c1 = Class.forName("com.daffodilwoods.daffodildb.server.datasystem.encryptdecrypt.EDDesCipher");
157 }
158 if (algoName.trim().equalsIgnoreCase("twofish")) {
159 c1 = Class.forName("com.daffodilwoods.daffodildb.server.datasystem.encryptdecrypt.EDTwofishCipher");
160 }
161 if (algoName.trim().equalsIgnoreCase("des3")) {
162 c1 = Class.forName("com.daffodilwoods.daffodildb.server.datasystem.encryptdecrypt.EDDes3Cipher");
163 }
164 if (algoName.trim().equalsIgnoreCase("idea")) {
165 c1 = Class.forName("com.daffodilwoods.daffodildb.server.datasystem.encryptdecrypt.EDIdeaCipher");
166 }
167 Constructor cons = c1.getDeclaredConstructor(new Class [] {String .class});
168 return (EDBlockCipher)cons.newInstance(new Object [] {key});
169 }
170 catch (Exception ex) {
171 if(!_Server.ISONEDOLLARDB )
172 throw new DException("DSE0",new Object []{ex.getMessage()} );
173 return null;
174 }
175
176 }
177
178 public static String toString(byte bytes[])
179 {
180 return toString(bytes, 0, bytes.length);
181 }
182
183 }
184 |
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