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Diffstat (limited to 'crypto/src/security/MacUtilities.cs')
-rw-r--r--crypto/src/security/MacUtilities.cs6
1 files changed, 3 insertions, 3 deletions
diff --git a/crypto/src/security/MacUtilities.cs b/crypto/src/security/MacUtilities.cs
index 41cf5e9e2..fab9b1d41 100644
--- a/crypto/src/security/MacUtilities.cs
+++ b/crypto/src/security/MacUtilities.cs
@@ -114,15 +114,15 @@ namespace Org.BouncyCastle.Security
                 mechanism = upper;
             }
 
-            if (mechanism.StartsWith("PBEWITH"))
+            if (Platform.StartsWith(mechanism, "PBEWITH"))
             {
                 mechanism = mechanism.Substring("PBEWITH".Length);
             }
 
-            if (CultureInfo.InvariantCulture.CompareInfo.IsPrefix(mechanism, "HMAC", CompareOptions.Ordinal))
+            if (Platform.StartsWith(mechanism, "HMAC"))
             {
                 string digestName;
-                if (mechanism.StartsWith("HMAC-") || mechanism.StartsWith("HMAC/"))
+                if (Platform.StartsWith(mechanism, "HMAC-") || Platform.StartsWith(mechanism, "HMAC/"))
                 {
                     digestName = mechanism.Substring(5);
                 }