1 files changed, 4 insertions, 1 deletions
diff --git a/crypto/src/tls/crypto/impl/bc/BcTlsSigner.cs b/crypto/src/tls/crypto/impl/bc/BcTlsSigner.cs
index 841803043..cb510a150 100644
--- a/crypto/src/tls/crypto/impl/bc/BcTlsSigner.cs
+++ b/crypto/src/tls/crypto/impl/bc/BcTlsSigner.cs
@@ -23,7 +23,10 @@ namespace Org.BouncyCastle.Tls.Crypto.Impl.BC
             this.m_privateKey = privateKey;
         }
 
-        public abstract byte[] GenerateRawSignature(SignatureAndHashAlgorithm algorithm, byte[] hash);
+        public virtual byte[] GenerateRawSignature(SignatureAndHashAlgorithm algorithm, byte[] hash)
+        {
+            throw new NotSupportedException();
+        }
 
         public virtual TlsStreamSigner GetStreamSigner(SignatureAndHashAlgorithm algorithm)
         {