Web程序与应用程序通用Md5_动网_社区论坛·开发者网络源动力

Web中:

using System.Web.Security;

public string md5(string baseString)

{

return FormsAuthentication.HashPasswordForStoringInConfigFile(baseString,"MD5");

}

应用程序中:

using System.Security.Cryptography; 

 public static string GetMD5(Stream stream)

{

const string HEX_TABLE = "0123456789ABCDEF";

MD5 md5 = new MD5CryptoServiceProvider();

//Calculate MD5 Checksum

byte[]data = md5.ComputeHash(stream);

//convert to string

StringBuilder sb=new StringBuilder();

sb.Length =data.Length *2;

for(int i=0;i<data.Length ;i++)

{

sb[i*2]=HEX_TABLE[data[i]>>4];

sb[i*2+1]=HEX_TABLE[data[i] & 0xF];

}

return sb.ToString();

}

public static string GetMD5(string s)

{

byte[] data=ASCIIEncoding.ASCII.GetBytes(s);

MemoryStream stream=new MemoryStream(data);

//stream.Write(data,0,data.Length);

return GetMD5(stream);

}