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Java Card DES 生成器小程序输出与在线工具输出不同

转载 作者:塔克拉玛干 更新时间:2023-11-02 19:59:44 25 4
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下面的小程序是为了对 APDU 数据字段进行 DES 加密/解密而编写的:

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);
}

}

问题是它的输出与在线工具不一样。例如我使用 this website使用 key = 1122334455667788 计算 0x3030303030303030 的加密值,这是输出:

enter image description here

现在我用我的小程序重复上述加密:

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

因为我不知道 DES_ECB_PKCS5DES_ECB_NOPADDES_ECB_ISO9797_M2DES_ECB_ISO9797_M1 中的哪一个被使用在线工具,我用我的卡中的所有这些进行了加密。但输出与在线工具不同。

  1. 怎么了?
  2. 我如何找出在线工具使用的是上述密码中的哪一种?

最佳答案

As I didn't know which one of DES_ECB_PKCS5, DES_ECB_NOPAD, DES_ECB_ISO9797_M2 or DES_ECB_ISO9797_M1 being used by the online tool

这就是问题所在。 Blockmode、padding 和其他东西非常重要(而且有 4 种以上的组合)。在在线工具的情况下,字符集的东西(一般的输入解释)也是一个问题。

如果不详细了解在线工具,您将无法正确使用它。
只是不要使用它并搜索标准化测试 vector 。

除此之外,您为什么要使用 DES!?别这样了。
它不再安全。

关于Java Card DES 生成器小程序输出与在线工具输出不同,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/30148089/

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