From: Sebastien Pouliot <sebastien@ximian.com>
Date: Sun, 27 Mar 2011 20:54:02 +0000 (-0400)
Subject: Do not throw in IsSelfSigned on non-RSA based certificates
X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=commitdiff_plain;h=b7d72d0c6af1bee9b870312d40e8df62ee38754b;p=mono.git

Do not throw in IsSelfSigned on non-RSA based certificates

* X509Certificate.cs: Handle DSA or DSA paramaters-only certificates
in IsSeldSigned
---

diff --git a/mcs/class/Mono.Security/Mono.Security.X509/X509Certificate.cs b/mcs/class/Mono.Security/Mono.Security.X509/X509Certificate.cs
index e951e4bede2..c28e2f6bdbc 100644
--- a/mcs/class/Mono.Security/Mono.Security.X509/X509Certificate.cs
+++ b/mcs/class/Mono.Security/Mono.Security.X509/X509Certificate.cs
@@ -534,10 +534,20 @@ namespace Mono.Security.X509 {
 
 		public bool IsSelfSigned {
 			get { 
-				if (m_issuername == m_subject)
-					return VerifySignature (RSA); 
-				else
+				if (m_issuername != m_subject)
 					return false;
+
+				try {
+					if (RSA != null)
+						return VerifySignature (RSA);
+					else if (DSA != null)
+						return VerifySignature (DSA);
+					else
+						return false; // e.g. a certificate with only DSA parameters
+				}
+				catch (CryptographicException) {
+					return false;
+				}
 			}
 		}