From 0bcacb1cc7a059679117f9a6ca5a7b54ec0640ee Mon Sep 17 00:00:00 2001
From: Peter Dettman <peter.dettman@bouncycastle.org>
Date: Thu, 1 Aug 2019 20:29:01 +0700
Subject: Don't create a SecureRandom unnecessarily

---
 crypto/src/crypto/engines/RSABlindedEngine.cs | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

(limited to 'crypto/src')

diff --git a/crypto/src/crypto/engines/RSABlindedEngine.cs b/crypto/src/crypto/engines/RSABlindedEngine.cs
index 7b928c5fb..98108f9b4 100644
--- a/crypto/src/crypto/engines/RSABlindedEngine.cs
+++ b/crypto/src/crypto/engines/RSABlindedEngine.cs
@@ -49,13 +49,29 @@ namespace Org.BouncyCastle.Crypto.Engines
             {
                 ParametersWithRandom rParam = (ParametersWithRandom)param;
 
-                key = (RsaKeyParameters)rParam.Parameters;
-                random = rParam.Random;
+                this.key = (RsaKeyParameters)rParam.Parameters;
+
+                if (key is RsaPrivateCrtKeyParameters)
+                {
+                    this.random = rParam.Random;
+                }
+                else
+                {
+                    this.random = null;
+                }
             }
             else
             {
-                key = (RsaKeyParameters)param;
-                random = new SecureRandom();
+                this.key = (RsaKeyParameters)param;
+
+                if (key is RsaPrivateCrtKeyParameters)
+                {
+                    this.random = new SecureRandom();
+                }
+                else
+                {
+                    this.random = null;
+                }
             }
         }
 
-- 
cgit 1.5.1