Opc.Ua.Bindings.TcpChannel.RsaPkcs15_Verify C# (CSharp) Méthode

        private static bool RsaPkcs15_Verify(
            ArraySegment<byte> dataToVerify,
            byte[]             signature,
            X509Certificate2   signingCertificate,
            HashAlgorithmName algorithm)
        {
            // extract the public key.
            using (RSA rsa = signingCertificate.GetRSAPublicKey())
            {

                if (rsa == null)
                {
                    throw ServiceResultException.Create(StatusCodes.BadSecurityChecksFailed, "No public key for certificate.");
                }

                // verify signature.
                if (!rsa.VerifyData(dataToVerify.Array, dataToVerify.Offset, dataToVerify.Count, signature, algorithm, RSASignaturePadding.Pkcs1))
                {
                    string messageType = new UTF8Encoding().GetString(dataToVerify.Array, dataToVerify.Offset, 4);
                    int messageLength = BitConverter.ToInt32(dataToVerify.Array, dataToVerify.Offset + 4);
                    string actualSignature = Utils.ToHexString(signature);

                    Utils.Trace(
                        "Could not validate signature.\r\nCertificate={0}, MessageType={1}, Length={2}\r\nActualSignature={3}",
                        signingCertificate.Subject,
                        messageType,
                        messageLength,
                        actualSignature);

                    return false;
                }
            }
            return true;
        }