1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/src/crypto/agreement/SM2KeyExchange.cs b/crypto/src/crypto/agreement/SM2KeyExchange.cs
index 986d98421..5db156f9c 100644
--- a/crypto/src/crypto/agreement/SM2KeyExchange.cs
+++ b/crypto/src/crypto/agreement/SM2KeyExchange.cs
@@ -127,7 +127,7 @@ namespace Org.BouncyCastle.Crypto.Agreement
 
                 byte[] s1 = S1(mDigest, U, inner);
 
-                if (!Arrays.ConstantTimeAreEqual(s1, confirmationTag))
+                if (!Arrays.FixedTimeEquals(s1, confirmationTag))
                     throw new InvalidOperationException("confirmation tag mismatch");
 
                 return new byte[][] { rv, S2(mDigest, U, inner)};