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authortzefferer <tzefferer@8a26b1a7-26f0-462f-b9ef-d0e30c41f5a4>2010-12-01 10:21:23 +0000
committertzefferer <tzefferer@8a26b1a7-26f0-462f-b9ef-d0e30c41f5a4>2010-12-01 10:21:23 +0000
commit5e1b2cf0995debaef949805ed623741347253fb9 (patch)
treecb88b07b8fc7cb6cdf3615788a3b1ea3bed2b34c /smcc/src
parent5d227780e17ee97a5a76419dc10295a881c2032a (diff)
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Improvement of card recognition mechanism
git-svn-id: https://joinup.ec.europa.eu/svn/mocca/trunk@851 8a26b1a7-26f0-462f-b9ef-d0e30c41f5a4
Diffstat (limited to 'smcc/src')
-rw-r--r--smcc/src/main/java/at/gv/egiz/smcc/SignatureCardFactory.java285
1 files changed, 215 insertions, 70 deletions
diff --git a/smcc/src/main/java/at/gv/egiz/smcc/SignatureCardFactory.java b/smcc/src/main/java/at/gv/egiz/smcc/SignatureCardFactory.java
index 44c2e923..e189267c 100644
--- a/smcc/src/main/java/at/gv/egiz/smcc/SignatureCardFactory.java
+++ b/smcc/src/main/java/at/gv/egiz/smcc/SignatureCardFactory.java
@@ -51,6 +51,11 @@ public class SignatureCardFactory {
private byte[] atrMask;
/**
+ * The historical byte pattern.
+ */
+ private byte[] historicalBytesPattern;
+
+ /**
* The implementation class.
*/
private String impl;
@@ -85,6 +90,33 @@ public class SignatureCardFactory {
}
/**
+ * Creates a new SupportedCard instance with the given ATR pattern and
+ * mask and the corresponding implementation class.
+ *
+ * @param atrPattern
+ * the ATR pattern
+ * @param atrSubPattern
+ * the ATR sub pattern *
+ * @param atrMask
+ * the ATR mask
+ * @param implementationClass
+ * the name of the implementation class
+ *
+ * @throws NullPointerException
+ * if <code>atrPattern</code> or <code>atrMask</code> is
+ * <code>null</code>.
+ * @throws IllegalArgumentException
+ * if the lengths of <code>atrPattern</code> and
+ * <code>atrMask</code> of not equal.
+ */
+ public SupportedCard(byte[] atrPattern, byte[] historicalBytesPattern,
+ byte[] atrMask, String implementationClass) {
+
+ this(atrPattern, atrMask, implementationClass);
+ this.historicalBytesPattern = historicalBytesPattern;
+ }
+
+ /**
* Returns true if the given ATR matches the ATR pattern and mask this
* SupportedCard object.
*
@@ -119,6 +151,62 @@ public class SignatureCardFactory {
}
/**
+ * Returns true if the historical bytes of the given ATR contain the historical bytes pattern of this
+ * SupportedCard object.
+ *
+ * @param atr
+ * the ATR
+ *
+ * @return <code>true</code> if the historical bytes of the given ATR contain the historical bytes pattern
+ * of this SupportedCard object, or <code>false</code>
+ * otherwise.
+ */
+ public boolean matchesHistoricalBytesPattern(ATR atr) {
+
+ byte[] historicalBytes = atr.getHistoricalBytes();
+ if (historicalBytes == null ||
+ this.historicalBytesPattern == null ||
+ this.historicalBytesPattern.length > historicalBytes.length) {
+
+ return false;
+ }
+
+ int[] failure = computeFailure(this.historicalBytesPattern);
+
+ int j = 0;
+
+ for (int i = 0; i < historicalBytes.length; i++) {
+ while (j > 0 && this.historicalBytesPattern[j] != historicalBytes[i]) {
+ j = failure[j - 1];
+ }
+ if (this.historicalBytesPattern[j] == historicalBytes[i]) {
+ j++;
+ }
+ if (j == this.historicalBytesPattern.length) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ private int[] computeFailure(byte[] pattern) {
+ int[] failure = new int[pattern.length];
+
+ int j = 0;
+ for (int i = 1; i < pattern.length; i++) {
+ while (j > 0 && pattern[j] != pattern[i]) {
+ j = failure[j - 1];
+ }
+ if (pattern[j] == pattern[i]) {
+ j++;
+ }
+ failure[i] = j;
+ }
+
+ return failure;
+ }
+
+ /**
* @return the corresponding implementation class.
*/
public String getImplementationClassName() {
@@ -310,23 +398,24 @@ public class SignatureCardFactory {
(byte) 0xff }, "at.gv.egiz.smcc.ESDNIeCard"));
// FMNT card - ATR is correct, but implementation is NOT equal to DNIe
-// supportedCards.add(new SupportedCard(
-// // ATR
-// // [3b:ef:00:00:40:14:80:25:43:45:52:45:53:57:01:16:01:01:03:90:00]
-// new byte[] { (byte) 0x3b, (byte) 0xEF, (byte) 0x00,
-// (byte) 0x00, (byte) 0x40, (byte) 0x14, (byte) 0x80,
-// (byte) 0x25, (byte) 0x43, (byte) 0x45, (byte) 0x52,
-// (byte) 0x45, (byte) 0x53, (byte) 0x57, (byte) 0x01,
-// (byte) 0x16, (byte) 0x01, (byte) 0x01, (byte) 0x03,
-// (byte) 0x90, (byte) 0x00 },
-// // mask (ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff)
-// new byte[] { (byte) 0xff, (byte) 0xff, (byte) 0xff,
-// (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
-// (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
-// (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
-// (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
-// (byte) 0xff, (byte) 0xff },
-// "at.gv.egiz.smcc.ESDNIeCard"));
+ // supportedCards.add(new SupportedCard(
+ // // ATR
+ // // [3b:ef:00:00:40:14:80:25:43:45:52:45:53:57:01:16:01:01:03:90:00]
+ // new byte[] { (byte) 0x3b, (byte) 0xEF, (byte) 0x00,
+ // (byte) 0x00, (byte) 0x40, (byte) 0x14, (byte) 0x80,
+ // (byte) 0x25, (byte) 0x43, (byte) 0x45, (byte) 0x52,
+ // (byte) 0x45, (byte) 0x53, (byte) 0x57, (byte) 0x01,
+ // (byte) 0x16, (byte) 0x01, (byte) 0x01, (byte) 0x03,
+ // (byte) 0x90, (byte) 0x00 },
+ // // mask
+ // (ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff)
+ // new byte[] { (byte) 0xff, (byte) 0xff, (byte) 0xff,
+ // (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
+ // (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
+ // (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
+ // (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
+ // (byte) 0xff, (byte) 0xff },
+ // "at.gv.egiz.smcc.ESDNIeCard"));
// FIN eID
supportedCards.add(new SupportedCard(
@@ -336,6 +425,8 @@ public class SignatureCardFactory {
(byte) 0x00, (byte) 0x51, (byte) 0x56, (byte) 0x46,
(byte) 0x69, (byte) 0x6E, (byte) 0x45, (byte) 0x49,
(byte) 0x44 },
+ // historical bytes pattern
+ new byte[] {'F','i','n','E','I','D'},
// mask (ff:ff:ff:ff:ff:ff:ff:00:ff:ff:ff:ff:ff:ff:ff:ff) -
// ignore card OS minor version
new byte[] { (byte) 0xff, (byte) 0xff, (byte) 0xff,
@@ -399,10 +490,11 @@ public class SignatureCardFactory {
// ATR
// (3B:5E:11:FF:45:73:74:45:49:44:20:76:65:72:20:31:2E:30)
new byte[] { (byte) 0x3b, (byte) 0x00, (byte) 0x00,
- (byte) 0xff, (byte) 0x45, (byte) 0x73, (byte) 0x74,
- (byte) 0x45, (byte) 0x49, (byte) 0x44, (byte) 0x20,
- (byte) 0x76, (byte) 0x65, (byte) 0x72, (byte) 0x20,
- (byte) 0x31, (byte) 0x2e, (byte) 0x30 },
+ (byte) 0xff, 'E', 's', 't', 'E', 'I', 'D', ' ', 'v',
+ 'e', 'r', ' ', '1', '.', '0' },
+ // historical bytes pattern
+ new byte[] {'E', 's', 't', 'E', 'I', 'D', ' ', 'v',
+ 'e', 'r', ' ', '1', '.', '0'},
// mask
// (ff:00:00:00:00:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff)
new byte[] { (byte) 0xff, (byte) 0x00, (byte) 0x00,
@@ -412,19 +504,19 @@ public class SignatureCardFactory {
(byte) 0xff, (byte) 0xff, (byte) 0xff },
"at.gv.egiz.smcc.EstEIDCard"));
- // EstEID cards return different ATRs depending on the reader device
supportedCards.add(new SupportedCard(
// ATR
// (3B:DE:18:FF:C0:80:B1:FE:45:1F:03:45:73:74:45:49:44:20:76:65:72:20:31:2E:30:2B)
new byte[] { (byte) 0x3b, (byte) 0xde, (byte) 0x18,
(byte) 0xff, (byte) 0xc0, (byte) 0x80, (byte) 0xb1,
(byte) 0xfe, (byte) 0x45, (byte) 0x1f, (byte) 0x03,
- (byte) 0x45, (byte) 0x73, (byte) 0x74, (byte) 0x45,
- (byte) 0x49, (byte) 0x44, (byte) 0x20, (byte) 0x76,
- (byte) 0x65, (byte) 0x72, (byte) 0x20, (byte) 0x31,
- (byte) 0x2e, (byte) 0x30, (byte) 0x2b },
+ 'E', 's', 't', 'E', 'I', 'D', ' ', 'v', 'e', 'r', ' ',
+ '1', '.', '0', (byte) 0x2b },
+ // historical bytes pattern
+ new byte[] {'E', 's', 't', 'E', 'I', 'D', ' ', 'v',
+ 'e', 'r', ' ', '1', '.', '0'},
// mask
- // (ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:00:00:00:00)
+ // (ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff)
new byte[] { (byte) 0xff, (byte) 0xff, (byte) 0xff,
(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
@@ -434,15 +526,16 @@ public class SignatureCardFactory {
(byte) 0xff, (byte) 0xff, (byte) 0xff },
"at.gv.egiz.smcc.EstEIDCard"));
supportedCards.add(new SupportedCard(
- // ATR
+ // Cold ATR
// (3b:fe:94:00:ff:80:b1:fa:45:1f:03:45:73:74:45:49:44:20:76:65:72:20:31:2e:30:43)
new byte[] { (byte) 0x3b, (byte) 0xfe, (byte) 0x94,
(byte) 0x00, (byte) 0xff, (byte) 0x80, (byte) 0xb1,
(byte) 0xfa, (byte) 0x45, (byte) 0x1f, (byte) 0x03,
- (byte) 0x45, (byte) 0x73, (byte) 0x74, (byte) 0x45,
- (byte) 0x49, (byte) 0x44, (byte) 0x20, (byte) 0x76,
- (byte) 0x65, (byte) 0x72, (byte) 0x20, (byte) 0x31,
- (byte) 0x2e, (byte) 0x30, (byte) 0x43 },
+ 'E', 's', 't', 'E', 'I', 'D', ' ', 'v', 'e', 'r', ' ',
+ '1', '.', '0', (byte) 0x43 },
+ // historical bytes pattern
+ new byte[] {'E', 's', 't', 'E', 'I', 'D', ' ', 'v',
+ 'e', 'r', ' ', '1', '.', '0'},
// mask
// (ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:00:00:00:00)
new byte[] { (byte) 0xff, (byte) 0xff, (byte) 0xff,
@@ -453,7 +546,7 @@ public class SignatureCardFactory {
(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
(byte) 0xff, (byte) 0xff, (byte) 0xff },
"at.gv.egiz.smcc.EstEIDCard"));
-
+
supportedCards.add(new SupportedCard(
// ATR (3B:7D:95:00:00:80:31:80:65:B0:83:11:C0:A9:83:00:90:00 -
// 00:00:00:00)
@@ -479,6 +572,8 @@ public class SignatureCardFactory {
(byte) 0x31, (byte) 0xfe, (byte) 0x58, (byte) 0x4b,
'S', 'w', 'i', 's', 's', 'S', 'i', 'g', 'n',
(byte) 0x89 },
+ // historical bytes pattern
+ new byte[]{'S', 'w', 'i', 's', 's', 'S', 'i', 'g', 'n'},
// mask
new byte[] { (byte) 0xff, (byte) 0xff, (byte) 0xff,
(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
@@ -552,52 +647,102 @@ public class SignatureCardFactory {
SupportedCard supportedCard = cards.next();
if (supportedCard.matches(atr)) {
- ClassLoader cl = SignatureCardFactory.class.getClassLoader();
- SignatureCard sc;
- try {
- Class<?> scClass = cl.loadClass(supportedCard
- .getImplementationClassName());
- sc = (SignatureCard) scClass.newInstance();
-
- sc = ExclSignatureCardProxy.newInstance(sc);
-
- sc.init(card, cardTerminal);
+ return instantiateSignatureCard(cardTerminal, card, supportedCard);
+ }
+ }
+
+ // if no matching implementation has been found yet, check for pattern match in historical bytes
+ log.trace("No card matching complete ATR found - checking candidates with historical bytes matches.");
+ Iterator<SupportedCard> cardsIterator = supportedCards.iterator();
+ List<SupportedCard> historicalBytesCandidates = new ArrayList<SupportedCard>();
+ while (cardsIterator.hasNext()) {
+ SupportedCard supportedCard = cardsIterator.next();
+
+ if(supportedCard.matchesHistoricalBytesPattern(atr)) {
+
+ historicalBytesCandidates.add(supportedCard);
+ }
+ }
+
+ historicalBytesCandidates = reduceCandidateList(historicalBytesCandidates);
+ if(historicalBytesCandidates.size() != 1) {
+
+ log.warn("Found {} cards with matching historical bytes pattern.", historicalBytesCandidates.size());
+ } else {
+
+ log.trace("Instantiating class " + historicalBytesCandidates.get(0).getImplementationClassName() + " according to historical bytes pattern match.");
+ return instantiateSignatureCard(cardTerminal, card, historicalBytesCandidates.get(0));
+ }
+
+ throw new CardNotSupportedException("Card not supported: ATR="
+ + toString(atr.getBytes()));
- return sc;
+ }
- } catch (ClassNotFoundException e) {
- log.warn(
- "Cannot find signature card implementation class.",
- e);
- throw new CardNotSupportedException(
- "Cannot find signature card implementation class.",
- e);
- } catch (InstantiationException e) {
- log
- .warn(
- "Failed to instantiate signature card implementation.",
- e);
- throw new CardNotSupportedException(
+ private SignatureCard instantiateSignatureCard(CardTerminal cardTerminal, Card card, SupportedCard supportedCard) throws CardNotSupportedException {
+
+ ClassLoader cl = SignatureCardFactory.class.getClassLoader();
+ SignatureCard sc;
+ try {
+ Class<?> scClass = cl.loadClass(supportedCard.getImplementationClassName());
+ sc = (SignatureCard) scClass.newInstance();
+
+ sc = ExclSignatureCardProxy.newInstance(sc);
+
+ sc.init(card, cardTerminal);
+
+ return sc;
+
+ } catch (ClassNotFoundException e) {
+ log.warn(
+ "Cannot find signature card implementation class.",
+ e);
+ throw new CardNotSupportedException(
+ "Cannot find signature card implementation class.",
+ e);
+ } catch (InstantiationException e) {
+ log
+ .warn(
"Failed to instantiate signature card implementation.",
e);
- } catch (IllegalAccessException e) {
- log
- .warn(
- "Failed to instantiate signature card implementation.",
- e);
- throw new CardNotSupportedException(
+ throw new CardNotSupportedException(
+ "Failed to instantiate signature card implementation.",
+ e);
+ } catch (IllegalAccessException e) {
+ log
+ .warn(
"Failed to instantiate signature card implementation.",
e);
+ throw new CardNotSupportedException(
+ "Failed to instantiate signature card implementation.",
+ e);
+ }
+ }
+
+ private List<SupportedCard> reduceCandidateList(List<SupportedCard> candidates) {
+
+ List<SupportedCard> result = new ArrayList<SupportedCard>();
+
+ for(SupportedCard current : candidates) {
+
+ String implName = current.getImplementationClassName();
+ boolean alreadyPresent = false;
+
+ for(SupportedCard card : result) {
+
+ if(card.getImplementationClassName().equals(implName)) {
+
+ alreadyPresent = true;
}
-
}
- }
-
- throw new CardNotSupportedException("Card not supported: ATR="
- + toString(atr.getBytes()));
-
+
+ if(!alreadyPresent) {
+ result.add(current);
+ }
+ }
+ return result;
}
-
+
public static String toString(byte[] b) {
StringBuffer sb = new StringBuffer();
if (b != null && b.length > 0) {