【转发】本地可以，发布到服务器报错【CngKey.Import(keyData, CngKeyBlobFormat.Pkcs8PrivateBlob)系统找不到指定的文件】的解决方案

protected static string Sign(string message, string privateKey)
        {
            try
            {
                byte[] keyData = Convert.FromBase64String(privateKey);
                using (CngKey cngKey = CngKey.Import(keyData, CngKeyBlobFormat.Pkcs8PrivateBlob))
                using (RSACng rsa = new RSACng(cngKey))
                {
                    byte[] data = Encoding.UTF8.GetBytes(message);
                    return Convert.ToBase64String(rsa.SignData(data, HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1));
                }
            }
            catch(Exception ex)
            {

                return "";
            }

        }