C# MD5加密

MD5加密方法一

1.引用命名空間

using System.Security.Cryptography;

 

2.編碼

/**
* MD5加密
* @return MD5加密結果
*/

public static string EncryptByMD5(string cleartext)
{
    cleartext = cleartext.Trim();
    using (MD5CryptoServiceProvider md5Provider = new MD5CryptoServiceProvider())
    {
        byte[] hashBytes = md5Provider.ComputeHash(Encoding.UTF8.GetBytes(cleartext));
        var builder = new StringBuilder();
        for (int i = 0; i < hashBytes.Length; i++)
        {
           builder.Append(hashBytes[i].ToString("x2"));
        }
        return builder.ToString();
     }
}

 

 

MD5加密方法二

1.引用命名空間

using System.Security.Cryptography;

 

2.編碼

/**
* MD5加密
* @return MD5加密結果
*/
public static string EncryptByMD5(string cleartext)
{

    var md5 = MD5.Create();
    var bs = md5.ComputeHash(Encoding.UTF8.GetBytes(cleartext));
    var sb = new StringBuilder();
    foreach (byte b in bs)
    {
      sb.Append(b.ToString("x2"));
    }
    //所有字符轉為大寫
    return sb.ToString().ToUpper();

}