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-rw-r--r--crypto/src/math/ec/custom/gm/SM2P256V1Field.cs2
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/src/math/ec/custom/gm/SM2P256V1Field.cs b/crypto/src/math/ec/custom/gm/SM2P256V1Field.cs
index 38743189a..6fbe849a8 100644
--- a/crypto/src/math/ec/custom/gm/SM2P256V1Field.cs
+++ b/crypto/src/math/ec/custom/gm/SM2P256V1Field.cs
@@ -47,7 +47,7 @@ namespace Org.BouncyCastle.Math.EC.Custom.GM
 
         public static uint[] FromBigInteger(BigInteger x)
         {
-            uint[] z = Nat256.FromBigInteger(x);
+            uint[] z = Nat.FromBigInteger(256, x);
             if (z[7] >= P7 && Nat256.Gte(z, P))
             {
                 Nat256.SubFrom(P, z);