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-rw-r--r--crypto/src/security/SecureRandom.cs6
1 files changed, 3 insertions, 3 deletions
diff --git a/crypto/src/security/SecureRandom.cs b/crypto/src/security/SecureRandom.cs
index 866a2cf0d..ac9d98158 100644
--- a/crypto/src/security/SecureRandom.cs
+++ b/crypto/src/security/SecureRandom.cs
@@ -1,9 +1,9 @@
 using System;
-using System.Globalization;
 
 using Org.BouncyCastle.Crypto;
 using Org.BouncyCastle.Crypto.Digests;
 using Org.BouncyCastle.Crypto.Prng;
+using Org.BouncyCastle.Utilities;
 
 namespace Org.BouncyCastle.Security
 {
@@ -41,7 +41,7 @@ namespace Org.BouncyCastle.Security
 			// TODO Compared to JDK, we don't auto-seed if the client forgets - problem?
 
 			// TODO Support all digests more generally, by stripping PRNG and calling DigestUtilities?
-			string drgName = algorithm.ToUpperInvariant();
+			string drgName = Platform.ToUpperInvariant(algorithm);
 
 			IRandomGenerator drg = null;
 			if (drgName == "SHA1PRNG")
@@ -136,7 +136,7 @@ namespace Org.BouncyCastle.Security
 			if (maxValue < 2)
 			{
 				if (maxValue < 0)
-					throw new ArgumentOutOfRangeException("maxValue < 0");
+					throw new ArgumentOutOfRangeException("maxValue", "cannot be negative");
 
 				return 0;
 			}