1 files changed, 72 insertions, 0 deletions
diff --git a/libraries/spongycastle/prov/src/main/jdk1.3/org/spongycastle/jce/provider/ProviderUtil.java b/libraries/spongycastle/prov/src/main/jdk1.3/org/spongycastle/jce/provider/ProviderUtil.java
new file mode 100644
index 000000000..74efc9a99
--- /dev/null
+++ b/libraries/spongycastle/prov/src/main/jdk1.3/org/spongycastle/jce/provider/ProviderUtil.java
@@ -0,0 +1,72 @@
+package org.spongycastle.jce.provider;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.security.Permission;
+
+import org.spongycastle.jcajce.provider.config.ConfigurableProvider;
+import org.spongycastle.jcajce.provider.config.ProviderConfigurationPermission;
+import org.spongycastle.jce.spec.ECParameterSpec;
+
+public class ProviderUtil
+{
+    private static Permission BC_EC_LOCAL_PERMISSION = new ProviderConfigurationPermission(
+                                                   "SC", ConfigurableProvider.THREAD_LOCAL_EC_IMPLICITLY_CA);
+    private static Permission BC_EC_PERMISSION = new ProviderConfigurationPermission(
+                                                   "SC", ConfigurableProvider.EC_IMPLICITLY_CA);
+
+    private static ThreadLocal threadSpec = new ThreadLocal();
+    private static volatile ECParameterSpec ecImplicitCaParams;
+
+    static void setParameter(String parameterName, Object parameter)
+    {
+        SecurityManager securityManager = System.getSecurityManager();
+
+        if (parameterName.equals(ConfigurableProvider.THREAD_LOCAL_EC_IMPLICITLY_CA))
+        {
+            ECParameterSpec curveSpec;
+
+            if (securityManager != null)
+            {
+                securityManager.checkPermission(BC_EC_LOCAL_PERMISSION);
+            }
+
+            curveSpec = (ECParameterSpec)parameter;
+
+            threadSpec.set(curveSpec);
+        }
+        else if (parameterName.equals(ConfigurableProvider.EC_IMPLICITLY_CA))
+        {
+            if (securityManager != null)
+            {
+                securityManager.checkPermission(BC_EC_PERMISSION);
+            }
+
+            ecImplicitCaParams = (ECParameterSpec)parameter;
+        }
+    }
+
+    public static ECParameterSpec getEcImplicitlyCa()
+    {
+        ECParameterSpec spec = (ECParameterSpec)threadSpec.get();
+
+        if (spec != null)
+        {
+            return spec;
+        }
+
+        return ecImplicitCaParams;
+    }
+
+    static int getReadLimit(InputStream in)
+        throws IOException
+    {
+        if (in instanceof ByteArrayInputStream)
+        {
+            return in.available();
+        }
+
+        return Integer.MAX_VALUE;
+    }
+}