2 files changed, 193 insertions, 0 deletions

diff --git a/src/main/java/org/uic/barcode/utils/AlgorithmNameResolver.java b/src/main/java/org/uic/barcode/utils/AlgorithmNameResolver.java
new file mode 100644
index 0000000..300bf7d
--- /dev/null
+++ b/src/main/java/org/uic/barcode/utils/AlgorithmNameResolver.java
@@ -0,0 +1,173 @@
+package org.uic.barcode.utils;

+

+import java.security.Provider;

+import java.security.Provider.Service;

+import java.security.Security;

+import java.util.Set;

+import java.util.SortedSet;

+import java.util.TreeSet;

+import java.util.regex.Matcher;

+import java.util.regex.Pattern;

+

+public class AlgorithmNameResolver {

+	

+	

+	public static final String TYPE_KEY_GENERATOR_ALG = "KeyPairGenerator";

+	public static final String TYPE_SIGNATURE_ALG = "Signature";

+	

+	

+    private static final Pattern KEY_TYPE_PATTERN = Pattern.compile("^(\\w+)[.].*$");

+    private static final Pattern KEY_ALIAS_TYPE_PATTERN = Pattern.compile("^Alg[.]Alias[.](\\w+).*$");

+    private static final Pattern KEY_OID_PATTERN = Pattern.compile(".*?(\\d+(?:[.]\\d+){3,})$");

+

+    public static String getSignatureAlgorithmName (String oid) throws Exception {

+    	

+		Provider[] provs = Security.getProviders();

+		for (Provider prov : provs) {

+		       Service service = prov.getService(AlgorithmNameResolver.TYPE_SIGNATURE_ALG,oid);

+		       if (service != null) {

+		    	   return service.getAlgorithm();

+		       }

+		}

+		return null;

+    	

+    }

+    	

+

+    public static String getName(String type, String oid) throws Exception {

+    	

+    	Provider[] provs = Security.getProviders();

+

+        for (Provider prov : provs) {

+	        	

+	       		SortedSet<String> typeAndOID = getTypeAndOIDStrings(prov);

+

+	       		for (String entry : typeAndOID) {

+	       			String[] typeAndOIDArray = entry.split("-");

+	       			String ptype = typeAndOIDArray[0];   

+	       			if (ptype.equalsIgnoreCase(type)) {

+		       			String poid = typeAndOIDArray[1];

+		       			Service pservice = prov.getService(ptype, poid);

+		       			String palgo = pservice.getAlgorithm();	

+

+	       				if (ptype.equalsIgnoreCase(type) && poid.equals(oid)) {

+	       					return palgo;

+	       				}

+	       			}

+	       		}

+        }

+        

+        

+		if (oid.startsWith("1.2.840.10045")) {

+			return "ECDSA";

+		} else if (oid.startsWith("1.2.840.10040")) {

+			return "DSA";

+		}

+		

+        return null;

+	        	

+	}    

+    

+    public static String getName(String type, String oid, String providerName) throws Exception {

+	

+    	Provider[] provs = Security.getProviders();

+

+        for (Provider prov : provs) {

+	        	

+	       	if (providerName == null || prov.getName().equals(providerName)) {

+

+	       		SortedSet<String> typeAndOID = getTypeAndOIDStrings(prov);

+

+	       		for (String entry : typeAndOID) {

+	       			String[] typeAndOIDArray = entry.split("-");

+	       			String ptype = typeAndOIDArray[0];   

+	       			if (ptype.equalsIgnoreCase(type)) {

+		       			String poid = typeAndOIDArray[1];

+		       			Service pservice = prov.getService(ptype, poid);

+		       			String palgo = pservice.getAlgorithm();	

+

+	       				if (ptype.equalsIgnoreCase(type) && poid.equals(oid)) {

+	       					return palgo;

+	       				}

+	       			}

+	       		}

+	       	}

+        }

+        

+        

+		if (oid.startsWith("1.2.840.10045")) {

+			return "ECDSA";

+		} else if (oid.startsWith("1.2.840.10040")) {

+			return "DSA";

+		}

+		

+        return null;

+	        	

+	}

+

+    private static SortedSet<String> getTypeAndOIDStrings(Provider prov) {

+    	

+    	SortedSet<String> typeAndOID = new TreeSet<>();

+

+    	Set<Object> keys = prov.keySet();

+    	for (Object key : keys) {

+    		String keyString = key.toString();

+    		Matcher oidMatcher = KEY_OID_PATTERN.matcher(keyString);

+    		if (oidMatcher.matches()) {

+    			// get OID from matched keyString

+    			String oid = oidMatcher.group(1);

+    			

+    			// determine type

+    			String type;

+    			Matcher aliasTypeMatcher = KEY_ALIAS_TYPE_PATTERN.matcher(keyString);

+    			if (aliasTypeMatcher.matches()) {

+                    type = aliasTypeMatcher.group(1);

+                } else {

+                    Matcher typeMatcher = KEY_TYPE_PATTERN.matcher(keyString);

+                    typeMatcher.matches();

+                    type = typeMatcher.group(1);

+                }

+                // algorithm parameters are not algorithms, so skip them

+                if (type.equals("AlgorithmParameters")) {

+                    continue;

+                }

+

+                // auto-removes dupes

+                typeAndOID.add(type + "-" + oid);

+            }

+        }

+        return typeAndOID;

+	}

+    

+

+    public static String getSecurityNames() throws Exception {

+    	

+        	Provider[] provs = Security.getProviders();

+        	

+        	StringBuilder sb = new StringBuilder();

+

+            for (Provider prov : provs) {

+

+   	       		SortedSet<String> typeAndOID = getTypeAndOIDStrings(prov);

+

+   	       		for (String entry : typeAndOID) {

+   	       			String[] typeAndOIDArray = entry.split("-");

+   	       			String ptype = typeAndOIDArray[0];   

+   	       			String poid = typeAndOIDArray[1];

+   		       		Service pservice = prov.getService(ptype, poid);

+   		       	    String palgo = "";

+   		       		if ( pservice != null) {

+   		       			palgo = pservice.getAlgorithm();	

+   		       		}

+   		       		sb.append(prov).append(";");

+   		       		sb.append(ptype).append(";");

+   		       		sb.append(poid).append(";");

+   		       		sb.append(palgo).append(";");

+   		       		sb.append("\r\n");

+

+    	       	}

+            }

+            return sb.toString();

+    	        	

+    	}

+}

diff --git a/src/main/java/org/uic/barcode/utils/package.html b/src/main/java/org/uic/barcode/utils/package.html
new file mode 100644
index 0000000..45a73a9
--- /dev/null
+++ b/src/main/java/org/uic/barcode/utils/package.html
@@ -0,0 +1,20 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

+<html>

+<head></head>

+<body>

+

+<h1>Implementation of the header frames to bundle all data for a bar code.</h1>

+

+<p>

+

+  Provides a decoding and encoding of the header data frames for:<br/><br/>

+  

+  <ul>

+  <li> static header as defined in UIC IRS 90918-9</li>

+  <li> dynamic header as drafted for the UIC IRS 90918-9</li>

+

+  </ul>

+</p>

+  

+</body>

+</html>
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