Java Card DES生成器applet输出与online-tools输出不同
编写以下小程序以在APDU数据字段上执行DES加密/解密：
package cryptoPack;
import javacard.framework.APDU;
import javacard.framework.Applet;
import javacard.framework.ISO7816;
import javacard.framework.ISOException;
import javacard.framework.JCSystem;
import javacard.framework.Util;
import javacard.security.CryptoException;
import javacard.security.DESKey;
import javacard.security.KeyBuilder;
import javacardx.crypto.Cipher;
public class CryptoDES extends Applet {
// Array for the encryption/decryption key
private byte[] TheDES_Key = { (byte) 0x00, (byte) 0x00, (byte) 0x00,
(byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
(byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
(byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
(byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
(byte) 0x00 };
// Defining required Keys
DESKey MyDES1Key = (DESKey) KeyBuilder.buildKey(KeyBuilder.TYPE_DES,
KeyBuilder.LENGTH_DES, false);
DESKey MyDES2Key = (DESKey) KeyBuilder.buildKey(KeyBuilder.TYPE_DES,
KeyBuilder.LENGTH_DES3_2KEY, false);
DESKey MyDES3Key = (DESKey) KeyBuilder.buildKey(KeyBuilder.TYPE_DES,
KeyBuilder.LENGTH_DES3_3KEY, false);
byte ConfiguredKeyLength;
// Defining required cipher
Cipher MyCipher;
// Defining switch case variables for supported instructions = INS in APDU command
final byte SetKey = (byte) 0xC0;
final byte OneKeyDES = (byte) 0xC1;
final byte TwoKeyDES = (byte) 0xC2;
final byte ThreeKeyDES = (byte) 0xC3;
// Defining switch case variables for cipher algorithms = P1 in APDU command
final byte DES_CBC_ISO9797_M1 = (byte) 0x00;
final byte DES_CBC_ISO9797_M2 = (byte) 0x01;
final byte DES_CBC_NOPAD = (byte) 0x02;
final byte DES_CBC_PKCS5 = (byte) 0x03;
final byte DES_ECB_ISO9797_M1 = (byte) 0x04;
final byte DES_ECB_ISO9797_M2 = (byte) 0x05;
final byte DES_ECB_NOPAD = (byte) 0x06;
final byte DES_ECB_PKCS5 = (byte) 0x07;
// Defining Proprietary Status Words
final short KeyInNotSetGood = 0x6440;
// A flag to be sure that the configured key has the same length that the
// algorithm needs.
private CryptoDES() {
}
public static void install(byte bArray[], short bOffset, byte bLength)
throws ISOException {
new CryptoDES().register();
}
public void process(APDU apdu) throws ISOException {
// Assigning 0 to "ConfiguredKeyLength" to force the user to use ...
// ... "SetKey" command, after applet selection.
if (selectingApplet()) {
ConfiguredKeyLength = 0;
return;
}
byte[] buffer = apdu.getBuffer();
// Checking the CLA field in the APDU command.
if (buffer[ISO7816.OFFSET_CLA] != 0) {
ISOException.throwIt(ISO7816.SW_CLA_NOT_SUPPORTED);
}
// Checking the P1 and P2 fields in the APDU command.
if (buffer[ISO7816.OFFSET_P1] > 7 || buffer[ISO7816.OFFSET_P2] > 1) {
ISOException.throwIt(ISO7816.SW_INCORRECT_P1P2);
}
// Analyzing the command.
try {
switch (buffer[ISO7816.OFFSET_INS]) {
case SetKey:
SetCryptoKeyAndInitCipher(apdu);
break;
case OneKeyDES:
OneKeyDESCrypto(apdu);
DoEncryptDecrypt(apdu);
break;
case TwoKeyDES:
TwoKeyDESCrypto(apdu);
DoEncryptDecrypt(apdu);
break;
case (byte) ThreeKeyDES:
ThreeKeyDESCrypto(apdu);
DoEncryptDecrypt(apdu);
break;
default:
ISOException.throwIt(ISO7816.SW_INS_NOT_SUPPORTED);
}
} catch (CryptoException e) {
ISOException.throwIt(((CryptoException) e).getReason());
}
}
public void SetCryptoKeyAndInitCipher(APDU apdu)
throws ISOException {
byte[] buffer = apdu.getBuffer();
// Key must has a length of 8, 16 or 24 bytes
if (buffer[ISO7816.OFFSET_LC] == 8 || buffer[ISO7816.OFFSET_LC] == 16
|| buffer[ISO7816.OFFSET_LC] == 24) {
Util.arrayCopyNonAtomic(buffer, ISO7816.OFFSET_CDATA, TheDES_Key,
(short) 0, buffer[ISO7816.OFFSET_LC]);
ConfiguredKeyLength = buffer[ISO7816.OFFSET_LC];
} else {
ISOException.throwIt(ISO7816.SW_DATA_INVALID);
}
switch (buffer[ISO7816.OFFSET_P1]) {
case DES_CBC_ISO9797_M1:
MyCipher = Cipher.getInstance(Cipher.ALG_DES_CBC_ISO9797_M1, false);
break;
case DES_CBC_ISO9797_M2:
MyCipher = Cipher.getInstance(Cipher.ALG_DES_CBC_ISO9797_M2, false);
break;
case DES_CBC_NOPAD:
MyCipher = Cipher.getInstance(Cipher.ALG_DES_CBC_NOPAD, false);
break;
case DES_CBC_PKCS5:
MyCipher = Cipher.getInstance(Cipher.ALG_DES_CBC_PKCS5, false);
break;
case DES_ECB_ISO9797_M1:
MyCipher = Cipher.getInstance(Cipher.ALG_DES_ECB_ISO9797_M1, false);
break;
case DES_ECB_ISO9797_M2:
MyCipher = Cipher.getInstance(Cipher.ALG_DES_ECB_ISO9797_M2, false);
break;
case DES_ECB_NOPAD:
MyCipher = Cipher.getInstance(Cipher.ALG_DES_ECB_NOPAD, false);
break;
case DES_ECB_PKCS5:
MyCipher = Cipher.getInstance(Cipher.ALG_DES_ECB_PKCS5, false);
break;
}
}
public void OneKeyDESCrypto(APDU apdu)
throws ISOException {
byte[] buffer = apdu.getBuffer();
// Check to see if the configured key is the required key for this ...
// ... algorithm or not
if (ConfiguredKeyLength != 8) {
ISOException.throwIt(KeyInNotSetGood);
}
MyDES1Key.setKey(TheDES_Key, (short) 0);
if (buffer[ISO7816.OFFSET_P2] == 1) {
MyCipher.init(MyDES1Key, Cipher.MODE_ENCRYPT);
} else {
MyCipher.init(MyDES1Key, Cipher.MODE_DECRYPT);
}
}
public void TwoKeyDESCrypto(APDU apdu)
throws ISOException {
byte[] buffer = apdu.getBuffer();
// Check to see if the configured key is the required key for this ...
// ... algorithm or not
if (ConfiguredKeyLength != 16) {
ISOException.throwIt(KeyInNotSetGood);
}
MyDES2Key.setKey(TheDES_Key, (short) 0);
if (buffer[ISO7816.OFFSET_P2] == 1) {
MyCipher.init(MyDES2Key, Cipher.MODE_ENCRYPT);
} else {
MyCipher.init(MyDES2Key, Cipher.MODE_DECRYPT);
}
}
public void ThreeKeyDESCrypto(APDU apdu)
throws ISOException {
byte[] buffer = apdu.getBuffer();
// Check to see if the configured key is the required key for this ...
// ... algorithm or not
if (ConfiguredKeyLength != 24) {
ISOException.throwIt(KeyInNotSetGood);
}
MyDES3Key.setKey(TheDES_Key, (short) 0);
if (buffer[ISO7816.OFFSET_P2] == 1) {
MyCipher.init(MyDES3Key, Cipher.MODE_ENCRYPT);
} else {
MyCipher.init(MyDES3Key, Cipher.MODE_DECRYPT);
}
}
public void DoEncryptDecrypt(APDU apdu) {
byte[] buffer = apdu.getBuffer();
byte[] CipheredData = JCSystem.makeTransientByteArray((short) 32,
JCSystem.CLEAR_ON_DESELECT);
short datalen = apdu.setIncomingAndReceive();
if ((datalen % 8) != 0) {
ISOException.throwIt(ISO7816.SW_DATA_INVALID);
}
MyCipher.doFinal(buffer, (short) 0, datalen, CipheredData, (short) 0);
Util.arrayCopyNonAtomic(CipheredData, (short) 0, buffer, (short) 0,
datalen);
apdu.setOutgoingAndSend((short) 0, datalen);
}
}
问题在于其输出与在线工具不相同。例如，我使用this website计算0x3030303030303030的加密值，密钥为1122334455667788，这是输出：
现在我用我的applet重复上述加密：
OpenSC:: opensc-tool.exe -s 00a404000b0102030405060708090000 -s 00c0000008112233
4455667788 -s 00c10401083030303030303030
Using reader with a card: ACS CCID USB Reader 0
Sending: 00 A4 04 00 0B 01 02 03 04 05 06 07 08 09 00 00
Received (SW1=0x90, SW2=0x00)
Sending: 00 C0 00 00 08 11 22 33 44 55 66 77 88
Received (SW1=0x90, SW2=0x00)
Sending: 00 C1 04 01 08 30 30 30 30 30 30 30 30
Received (SW1=0x90, SW2=0x00):
8E 43 CF B8 91 02 01 38 .C.....8
OpenSC:: opensc-tool.exe -s 00a404000b0102030405060708090000 -s 00c0000008112233
4455667788 -s 00c10501083030303030303030
Using reader with a card: ACS CCID USB Reader 0
Sending: 00 A4 04 00 0B 01 02 03 04 05 06 07 08 09 00 00
Received (SW1=0x90, SW2=0x00)
Sending: 00 C0 00 00 08 11 22 33 44 55 66 77 88
Received (SW1=0x90, SW2=0x00)
Sending: 00 C1 05 01 08 30 30 30 30 30 30 30 30
Received (SW1=0x90, SW2=0x00):
A6 DE 1C D9 1B A9 EE D0 ........
OpenSC:: opensc-tool.exe -s 00a404000b0102030405060708090000 -s 00c0000008112233
4455667788 -s 00c10601083030303030303030
Using reader with a card: ACS CCID USB Reader 0
Sending: 00 A4 04 00 0B 01 02 03 04 05 06 07 08 09 00 00
Received (SW1=0x90, SW2=0x00)
Sending: 00 C0 00 00 08 11 22 33 44 55 66 77 88
Received (SW1=0x90, SW2=0x00)
Sending: 00 C1 06 01 08 30 30 30 30 30 30 30 30
Received (SW1=0x90, SW2=0x00):
0B FC BF EE 82 F4 8B 19 ........
OpenSC:: opensc-tool.exe -s 00a404000b0102030405060708090000 -s 00c0000008112233
4455667788 -s 00c10701083030303030303030
Using reader with a card: ACS CCID USB Reader 0
Sending: 00 A4 04 00 0B 01 02 03 04 05 06 07 08 09 00 00
Received (SW1=0x90, SW2=0x00)
Sending: 00 C0 00 00 08 11 22 33 44 55 66 77 88
Received (SW1=0x90, SW2=0x00)
Sending: 00 C1 07 01 08 30 30 30 30 30 30 30 30
Received (SW1=0x90, SW2=0x00):
AA 6E 4D 79 E5 0C B1 51 .nMy...Q
由于我不知道在线工具使用了DES_ECB_PKCS5，DES_ECB_NOPAD，DES_ECB_ISO9797_M2或DES_ECB_ISO9797_M1中的哪一个，我对所有这些工具进行了加密在我的卡片中。但输出与在线工具不同。
- 怎么了？
- 如何找出上述密码中的哪一个，在线工具是否使用？
2 个答案:
答案 0 :(得分：1)
因为我不知道DES_ECB_PKCS5，DES_ECB_NOPAD中的哪一个， 在线工具使用DES_ECB_ISO9797_M2或DES_ECB_ISO9797_M1
这就是问题所在。 Blockmode，padding和其他东西非常重要（并且有超过4种组合）。对于在线工具，charset的东西（一般的输入解释）也是一个问题。
如果不详细了解在线工具，您就无法获得任何正确的信息 只是不要使用它并搜索标准化的测试向量。
除此之外，你为什么要使用DES !?停止。
它不再安全了。
答案 1 :(得分：0)
您使用'00 C1 04 01 08 30 30 30 30 30 30 30 30进行加密） （30 30 30 30 30 30 30 30）;
修改这个 MyCipher.doFinal（缓冲区， ISO7816.OFFSET_CDATA ，datalen，CipheredData，（简称）0）;
非常好，你为延迟而道歉
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