C#_MD5与SHA1加密

引用命名空间：using System.Security.Cryptography;

MD5 16位加密：

public string GetMD5_16(string str)
{
    MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
    return BitConverter.ToString(md5.ComputeHash(UTF8Encoding.Default.GetBytes(str)), 4, 8).Replace("-", "");
}

MD5 32位加密：

 public string GetMD5_32(string str)
 {
    string pwd = "";
    MD5 md5 = MD5.Create();
    byte[] s = md5.ComputeHash(Encoding.UTF8.GetBytes(str));
    for (int i = 0; i < s.Length; i++)
    {
        pwd = pwd + s[i].ToString("X");
    }
    return pwd;
 }

 

SHA1加密：

public string GetSHA1(string str)  
{  
    SHA1 sha1 = new SHA1CryptoServiceProvider();  
    return BitConverter.ToString(sha1.ComputeHash(UTF8Encoding.Default.GetBytes(str))).Replace("-","");  
}