https://stackoverflow.com/questions/25262909/c-sharp-encoding-wsse-security-password-digest-with-sha-1-and-base64-not-matchin

onvif中的ws-username token 加密算法

Password_Digest = Base64 ( SHA-1 ( nonce + created + password ) )

编码为utf-8

注意这里的加密不是使用字符串进行加密，而是字节数组；

    public class WsseHelper     {         ///         /// 获取加密的字节数组         ///         ///         ///         ///         ///         private static byte[] buildBytes(string nonce, string createdString, string basedPassword)         {             byte[] nonceBytes = System.Convert.FromBase64String(nonce);             byte[] time = Encoding.UTF8.GetBytes(createdString);             byte[] pwd = Encoding.UTF8.GetBytes(basedPassword);             byte[] operand = new byte[nonceBytes.Length + time.Length + pwd.Length];             Array.Copy(nonceBytes, operand, nonceBytes.Length);             Array.Copy(time, 0, operand, nonceBytes.Length, time.Length);             Array.Copy(pwd, 0, operand, nonceBytes.Length + time.Length, pwd.Length);             return operand;         }         ///         /// 计算指定字节数组的哈希值。         ///         ///         ///         public static byte[] SHAOneHash(byte[] data)         {             using (SHA1Managed sha1 = new SHA1Managed())             {                 var hash = sha1.ComputeHash(data);                 return hash;             }         }         ///         /// 获取加密后的字符串         ///         ///         ///         ///         ///         public static string GetPasswordDigest(string nonce, string createdString, string password)         {             byte[] combined = buildBytes(nonce, createdString, password);             string output = System.Convert.ToBase64String(SHAOneHash(combined));             return output;         }         ///         /// 加密的时间戳         ///         ///         public static string GetCreated()         {             return DateTime.Now.ToString("yyyy-MM-ddThh:mm:ssZ");         }         ///         /// 将随机的16位字节数据加密成nonce         ///         ///         ///         public static string GetNonce()         {             byte[] nonce = new byte[16];             new Random().NextBytes(nonce);             return System.Convert.ToBase64String(nonce);         }         ///         /// 获取加密后的头部         ///         ///         ///         ///         public static string GetHead(string username, string password)         {             string res = string.Empty;             string format = @"                     {0}         {1}         {2}         {3}             ";             string nonce = GetNonce();             string created = GetCreated();             string pas = GetPasswordDigest(nonce, created, password);             res = string.Format(format, username, pas, nonce, created);             return res;         }     }