Add zkp

src/Neo.SmartContract.Framework/Services/Crypto.cs

@@ -19,5 +19,14 @@ public static class Crypto
 
         [Syscall("System.Crypto.CheckMultisig")]
         public extern static bool CheckMultisig(Cryptography.ECC.ECPoint[] pubkey, ByteString[] signature);
+
+        [Syscall("System.Crypto.Bls12381Add")]
+        public extern static byte[] Bls12381Add(byte[] gt1, byte[] gt2);
+
+        [Syscall("System.Crypto.Bls12381Mul")]
+        public extern static byte[] Bls12381Mul(byte[] gt, long mul);
+
+        [Syscall("System.Crypto.Bls12381Pairing")]
+        public extern static byte[] Bls12381Pairing(byte[] g1_bytes, byte[] g2_bytes);
     }
 }