diff options
Diffstat (limited to 'src/main/java/org/uic/barcode/utils/AlgorithmNameResolver.java')
| -rw-r--r-- | src/main/java/org/uic/barcode/utils/AlgorithmNameResolver.java | 187 |
1 files changed, 125 insertions, 62 deletions
diff --git a/src/main/java/org/uic/barcode/utils/AlgorithmNameResolver.java b/src/main/java/org/uic/barcode/utils/AlgorithmNameResolver.java index a3154f3..28f90e6 100644 --- a/src/main/java/org/uic/barcode/utils/AlgorithmNameResolver.java +++ b/src/main/java/org/uic/barcode/utils/AlgorithmNameResolver.java @@ -3,98 +3,161 @@ package org.uic.barcode.utils; import java.security.Provider;
import java.security.Provider.Service;
import java.security.Security;
+import java.util.HashMap;
+/**
+ * The Class AlgorithmNameResolver.
+ */
public class AlgorithmNameResolver {
+ /** The Constant TYPE_KEY_GENERATOR_ALG. */
public static final String TYPE_KEY_GENERATOR_ALG = "KeyPairGenerator";
+
+ /** The Constant TYPE_SIGNATURE_ALG. */
public static final String TYPE_SIGNATURE_ALG = "Signature";
+ /** The map. */
+ private static HashMap<String, HashMap<String, String>> map = new HashMap<String, HashMap<String, String>>();
+
+ /**
+ * Adds an entry for a mapping of algorithm type and oid to an algorithm name
+ *
+ * @param type the algorithm type
+ * @param oid the algorithm OID
+ * @param name the algorithm name
+ */
+ public static void addMap (String type, String oid, String name) {
+
+ if (map.get(type) == null) {
+ HashMap<String,String> list = new HashMap<String , String>();
+ list.put(oid, name);
+ map.put(type, list);
+ } else {
+ map.get(type).put(oid, name);
+ }
+ }
+
+ /**
+ * Gets the signature algorithm name.
+ *
+ * @param oid the oid
+ * @return the signature algorithm name
+ * @throws Exception the exception
+ */
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;
+ return getSignatureAlgorithmName (oid, null);
}
+ /**
+ * Gets the signature algorithm name.
+ *
+ * @param oid the oid
+ * @param provider the provider
+ * @return the signature algorithm name
+ * @throws Exception the exception
+ */
public static String getSignatureAlgorithmName (String oid, Provider provider) throws Exception {
+ return getAlgorithmName(AlgorithmNameResolver.TYPE_SIGNATURE_ALG,oid,provider);
+
+ }
+
+ /**
+ * Gets the name.
+ *
+ * @param type the type
+ * @param oid the oid
+ * @return the name
+ * @throws Exception the exception
+ */
+ public static String getName (String type, String oid) throws Exception {
+
+ return getAlgorithmName(type,oid,null);
+
+ }
+
+
+ /**
+ * Gets the name.
+ *
+ * @param type the type
+ * @param oid the oid
+ * @param provider the provider
+ * @return the name
+ * @throws Exception the exception
+ */
+ public static String getName(String type, String oid, Provider provider) throws Exception {
+
+ return getAlgorithmName(type,oid,provider);
+
+ }
+
+
+
+ /**
+ * Gets the algorithm name.
+ *
+ * @param type the type
+ * @param oid the oid
+ * @param provider the provider
+ * @return the algorithm name
+ * @throws Exception the exception
+ */
+ public static String getAlgorithmName (String type, String oid, Provider provider) throws Exception {
+
+ String name = null;
+
if (provider != null) {
- Service service = provider.getService(AlgorithmNameResolver.TYPE_SIGNATURE_ALG,oid);
- return service.getAlgorithm();
+ Service service = provider.getService(type,oid);
+ if (service != null) {
+ name = service.getAlgorithm();
+ }
+
+ if (name != null && name.length() > 0) {
+ return name;
+ }
}
Provider[] provs = Security.getProviders();
for (Provider prov : provs) {
- Service service = prov.getService(AlgorithmNameResolver.TYPE_SIGNATURE_ALG,oid);
+ Service service = prov.getService(type,oid);
if (service != null) {
- return service.getAlgorithm();
+ name = service.getAlgorithm();
+ }
+ if (name != null && name.length() > 0) {
+ return name;
}
}
- return null;
-
- }
-
-
- public static String getName (String type, String oid) throws Exception {
-
- Provider[] provs = Security.getProviders();
- for (Provider prov : provs) {
- Service service = prov.getService(type,oid);
- if (service != null) {
- return service.getAlgorithm();
- }
- }
-
- if (oid.startsWith("1.2.840.10045")) {
+
+ if (map.get(type) != null) {
+ if (map.get(type).get(oid) != null) {
+ return map.get(type).get(oid);
+ }
+ }
+
+
+ //fallback if the provider did not implement OIDs
+ if (oid.startsWith("1.2.840.10045.4")) {
return "ECDSA";
- } else if (oid.startsWith("1.2.840.10040")) {
- return "DSA";
- }
-
- return null;
-
- }
-
-
- public static String getName(String type, String oid, Provider provider) throws Exception {
-
- Service service = null;
- if (provider == null) {
-
- Provider[] provs = Security.getProviders();
- for (Provider prov : provs) {
- service = prov.getService(type,oid);
- }
-
- } else {
- service = provider.getService(type,oid);
- }
-
-
-
- if (service != null) {
- return service.getAlgorithm();
- }
-
- if (oid.startsWith("1.2.840.10045")) {
+ } else if (oid.startsWith("1.2.840.10045.3")) {
+ return "EC";
+ } else if (oid.startsWith("1.2.840.10045")) {
return "ECDSA";
} else if (oid.startsWith("1.2.840.10040")) {
return "DSA";
}
-
- return null;
-
- }
+
+ return null;
+
+ }
+
+
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