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Hi, I have got performance issue when use ECDsa.VerifyData() onMac, it's almost 10 times slower than on windows, which cause my app running very slow on Mac.
The runtime isdotnet core 3.1.
Here mytest code:
privatestaticX9ECParameters_ecParams=NistNamedCurves.GetByName("P-256");privatestaticECDomainParameters_domainParameters=newECDomainParameters(_ecParams.Curve,_ecParams.G,_ecParams.N,_ecParams.H,_ecParams.GetSeed());privatestaticOrg.BouncyCastle.Math.EC.ECCurve_curve=_ecParams.Curve;staticvoidMain(string[]args){varpublicKey="77d28f103c37eb03d62decd4fdbda01dd69fea878325bc1bebc5074a876455eb9d2f4e719ba0a0838df3b07479ed2179358f711fe9d004b693c62922e95772d0".HexToBytes();varsignature="61516a23f99962b4417c87d26592b52060b19c5b7481a2318c665af540ae721c69611c073c6e34a358343e9ad43b4966ce0f9a8914c5e77f2cb3fe28ae2bf4d0".HexToBytes();varmessage="38900d0000000000bd3bde894f6ddb7e5ae89e7d7c1eef5c271875c5a2bd6b75faba07c8c8423902e8c4d7a4ebf3542d7d8eee65a996bb45211e546bd995ae5b1d099a90464886981b9e479971010000214e0000bf1740f6c1e1f913d2f307b29b8082551ba9a5c5".HexToBytes();varv=VerifyData(message,signature,publicKey);varv2=VerifyDataBouncy(message,signature,publicKey);Console.WriteLine($"{v},{v2}");intcount=1000;varsw=newStopwatch();sw.Start();for(inti=0;i<count;i++){VerifyData(message,signature,publicKey);}sw.Stop();Console.WriteLine($"VerifyData :{sw.Elapsed.TotalSeconds} s");sw.Restart();for(inti=0;i<count;i++){VerifyDataBouncy(message,signature,publicKey);}sw.Stop();Console.WriteLine($"VerifyDataBouncy :{sw.Elapsed.TotalSeconds} s");Console.ReadLine();}staticboolVerifyData(ReadOnlySpan<byte>message,ReadOnlySpan<byte>signature,ReadOnlySpan<byte>pubkey){usingvarecdsa=ECDsa.Create(newECParameters{Curve=ECCurve.NamedCurves.nistP256,Q=newECPoint{X=pubkey[..32].ToArray(),Y=pubkey[32..].ToArray()}});returnecdsa.VerifyData(message,signature,HashAlgorithmName.SHA256);}staticboolVerifyDataBouncy(byte[]message,byte[]signature,byte[]pubkey){BigIntegerx=newBigInteger(1,pubkey.Take(32).ToArray());BigIntegery=newBigInteger(1,pubkey.Skip(32).ToArray());varderSignature=newDerSequence(// first 32 bytes is "r" numbernewDerInteger(newBigInteger(1,signature.Take(32).ToArray())),// last 32 bytes is "s" numbernewDerInteger(newBigInteger(1,signature.Skip(32).ToArray()))).GetDerEncoded();Org.BouncyCastle.Math.EC.ECPointq=_curve.CreatePoint(x,y);ECPublicKeyParameterspubkeyParam=newECPublicKeyParameters(q,_domainParameters);varverifier=SignerUtilities.GetSigner("SHA-256withECDSA");verifier.Init(false,pubkeyParam);verifier.BlockUpdate(message,0,message.Length);returnverifier.VerifySignature(derSignature);}
on Win10:
on Mac: