1 files changed, 1 insertions, 1 deletions

diff --git a/crypto/src/crypto/digests/GOST3411Digest.cs b/crypto/src/crypto/digests/GOST3411Digest.cs

index 218adf68c..123751baa 100644
--- a/crypto/src/crypto/digests/GOST3411Digest.cs
+++ b/crypto/src/crypto/digests/GOST3411Digest.cs
@@ -103,7 +103,7 @@ namespace Org.BouncyCastle.Crypto.Digests
 				length--;
 			}
 
-			while (length > xBuf.Length)
+			while (length >= xBuf.Length)
 			{
 				Array.Copy(input, inOff, xBuf, 0, xBuf.Length);