1 files changed, 5 insertions, 0 deletions
diff --git a/crypto/src/util/Platform.cs b/crypto/src/util/Platform.cs
index e43714181..25f2c62d9 100644
--- a/crypto/src/util/Platform.cs
+++ b/crypto/src/util/Platform.cs
@@ -56,6 +56,11 @@ namespace Org.BouncyCastle.Utilities
             return InvariantCompareInfo.IsPrefix(source, prefix, CompareOptions.Ordinal);
         }
 
+        internal static bool StartsWithIgnoreCase(string source, string prefix)
+        {
+            return InvariantCompareInfo.IsPrefix(source, prefix, CompareOptions.OrdinalIgnoreCase);
+        }
+
         internal static bool EndsWith(string source, string suffix)
         {
             return InvariantCompareInfo.IsSuffix(source, suffix, CompareOptions.Ordinal);