C# SHA256加密算法记录

 using System.Text;
 using System.Diagnostics;
 using System.Security;
 using System.Security.Cryptography;

 protected void Page_Load(object sender, EventArgs e)
     {
         string salted = "abcdefghijklm";
         string digest = SHA256Encrypt(salted);

         byte[] b = System.Text.Encoding.Default.GetBytes(digest);

         Response.Write(Convert.ToBase64String(b));
         Response.End();
     }

     public string SHA256Encrypt(string strIN)
     {
         //string strIN = getstrIN(strIN);
         byte[] tmpByte;
         SHA256 sha256 = new SHA256Managed();

         tmpByte = sha256.ComputeHash(GetKeyByteArray(strIN));
         sha256.Clear();

         return GetStringValue(tmpByte);

     }

     private string GetStringValue(byte[] Byte)
     {
         string tmpString = "";
         ASCIIEncoding Asc = new ASCIIEncoding();
         tmpString = Asc.GetString(Byte);
         return tmpString;
     }

     private byte[] GetKeyByteArray(string strKey)
     {
         ASCIIEncoding Asc = new ASCIIEncoding();

         int tmpStrLen = strKey.Length;
         byte[] tmpByte = new byte[tmpStrLen - ];

         tmpByte = Asc.GetBytes(strKey);

         return tmpByte;

     }