1 files changed, 15 insertions, 0 deletions
diff --git a/crypto/src/util/Platform.cs b/crypto/src/util/Platform.cs
index 118c29918..78ff6cee4 100644
--- a/crypto/src/util/Platform.cs
+++ b/crypto/src/util/Platform.cs
@@ -31,11 +31,26 @@ namespace Org.BouncyCastle.Utilities
             d.Dispose();
         }
 
+        internal static int IndexOf(string source, char value)
+        {
+            return InvariantCompareInfo.IndexOf(source, value, CompareOptions.Ordinal);
+        }
+
         internal static int IndexOf(string source, string value)
         {
             return InvariantCompareInfo.IndexOf(source, value, CompareOptions.Ordinal);
         }
 
+        internal static int IndexOf(string source, char value, int startIndex)
+        {
+            return InvariantCompareInfo.IndexOf(source, value, startIndex, CompareOptions.Ordinal);
+        }
+
+        internal static int IndexOf(string source, string value, int startIndex)
+        {
+            return InvariantCompareInfo.IndexOf(source, value, startIndex, CompareOptions.Ordinal);
+        }
+
         internal static int LastIndexOf(string source, string value)
         {
             return InvariantCompareInfo.LastIndexOf(source, value, CompareOptions.Ordinal);