1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed 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.
*/
/*
* Copyright (c) 2017, The Linux Foundation.
*/
/*
* Copyright 2010 Giesecke & Devrient GmbH.
*
* Licensed 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 com.android.se.security;
/** Represents the APDU command splitting all the individual fields */
public class CommandApdu {
protected int mCla = 0x00;
protected int mIns = 0x00;
protected int mP1 = 0x00;
protected int mP2 = 0x00;
protected int mLc = 0x00;
protected byte[] mData = new byte[0];
protected int mLe = 0x00;
protected boolean mLeUsed = false;
public CommandApdu(int cla, int ins, int p1, int p2) {
mCla = cla;
mIns = ins;
mP1 = p1;
mP2 = p2;
}
public CommandApdu() {
}
public CommandApdu(int cla, int ins, int p1, int p2, byte[] data) {
mCla = cla;
mIns = ins;
mLc = data.length;
mP1 = p1;
mP2 = p2;
mData = data;
}
public CommandApdu(int cla, int ins, int p1, int p2, byte[] data, int le) {
mCla = cla;
mIns = ins;
mLc = data.length;
mP1 = p1;
mP2 = p2;
mData = data;
mLe = le;
mLeUsed = true;
}
public CommandApdu(int cla, int ins, int p1, int p2, int le) {
mCla = cla;
mIns = ins;
mP1 = p1;
mP2 = p2;
mLe = le;
mLeUsed = true;
}
/** Returns true if both the headers are same */
public static boolean compareHeaders(byte[] header1, byte[] mask, byte[] header2) {
if (header1.length < 4 || header2.length < 4) {
return false;
}
byte[] compHeader = new byte[4];
compHeader[0] = (byte) (header1[0] & mask[0]);
compHeader[1] = (byte) (header1[1] & mask[1]);
compHeader[2] = (byte) (header1[2] & mask[2]);
compHeader[3] = (byte) (header1[3] & mask[3]);
if (((byte) compHeader[0] == (byte) header2[0])
&& ((byte) compHeader[1] == (byte) header2[1])
&& ((byte) compHeader[2] == (byte) header2[2])
&& ((byte) compHeader[3] == (byte) header2[3])) {
return true;
}
return false;
}
public int getP1() {
return mP1;
}
public void setP1(int p1) {
mP1 = p1;
}
public int getP2() {
return mP2;
}
public void setP2(int p2) {
mP2 = p2;
}
public int getLc() {
return mLc;
}
public byte[] getData() {
return mData;
}
/** Sets Data field of the APDU */
public void setData(byte[] data) {
mLc = data.length;
mData = data;
}
public int getLe() {
return mLe;
}
/** Sets the Le field of the command */
public void setLe(int le) {
mLe = le;
mLeUsed = true;
}
/** Returns the APDU in byte[] format */
public byte[] toBytes() {
int length = 4; // CLA, INS, P1, P2
if (mData.length != 0) {
length += 1; // LC
length += mData.length; // DATA
}
if (mLeUsed) {
length += 1; // LE
}
byte[] apdu = new byte[length];
int index = 0;
apdu[index] = (byte) mCla;
index++;
apdu[index] = (byte) mIns;
index++;
apdu[index] = (byte) mP1;
index++;
apdu[index] = (byte) mP2;
index++;
if (mData.length != 0) {
apdu[index] = (byte) mLc;
index++;
System.arraycopy(mData, 0, apdu, index, mData.length);
index += mData.length;
}
if (mLeUsed) {
apdu[index] += (byte) mLe; // LE
}
return apdu;
}
/** Clones the APDU */
public CommandApdu clone() {
CommandApdu apdu = new CommandApdu();
apdu.mCla = mCla;
apdu.mIns = mIns;
apdu.mP1 = mP1;
apdu.mP2 = mP2;
apdu.mLc = mLc;
apdu.mData = new byte[mData.length];
System.arraycopy(mData, 0, apdu.mData, 0, mData.length);
apdu.mLe = mLe;
apdu.mLeUsed = mLeUsed;
return apdu;
}
}
|
