1 files changed, 21 insertions, 0 deletions
diff --git a/pkix/src/main/java/org/spongycastle/cert/path/CertPathUtils.java b/pkix/src/main/java/org/spongycastle/cert/path/CertPathUtils.java
new file mode 100644
index 00000000..257e0bb8
--- /dev/null
+++ b/pkix/src/main/java/org/spongycastle/cert/path/CertPathUtils.java
@@ -0,0 +1,21 @@
+package org.spongycastle.cert.path;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import org.spongycastle.cert.X509CertificateHolder;
+
+class CertPathUtils
+{
+    static Set getCriticalExtensionsOIDs(X509CertificateHolder[] certificates)
+    {
+        Set criticalExtensions = new HashSet();
+
+        for (int i = 0; i != certificates.length; i++)
+        {
+            criticalExtensions.addAll(certificates[i].getCriticalExtensionOIDs());
+        }
+
+        return criticalExtensions;
+    }
+}