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path: root/crypto/src/crypto/BufferedAsymmetricBlockCipher.cs
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Diffstat (limited to 'crypto/src/crypto/BufferedAsymmetricBlockCipher.cs')
-rw-r--r--crypto/src/crypto/BufferedAsymmetricBlockCipher.cs2
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/src/crypto/BufferedAsymmetricBlockCipher.cs b/crypto/src/crypto/BufferedAsymmetricBlockCipher.cs
index be933a028..382d6a2cb 100644
--- a/crypto/src/crypto/BufferedAsymmetricBlockCipher.cs
+++ b/crypto/src/crypto/BufferedAsymmetricBlockCipher.cs
@@ -131,7 +131,7 @@ namespace Org.BouncyCastle.Crypto
 #if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER
         public override int ProcessBytes(ReadOnlySpan<byte> input, Span<byte> output)
 		{
-			Check.DataLength(input, buffer.Length - bufOff, "attempt to process message too long for cipher");
+            Check.DataLength(input.Length > buffer.Length - bufOff, "attempt to process message too long for cipher");
 
 			input.CopyTo(buffer.AsSpan(bufOff));
             bufOff += input.Length;