MD5密码加密

小贝 · 发表于 2018-4-25 08:00:02

using System;
using System.Security.Cryptography;
using System.Text;
namespace DimoNetwork.Common.DEncrypt
{
public enum MD5ResultMode : byte
{
Strong = 0,
Weak = 1
}
/// <summary>
/// 在应用程序中定义用于单向加密文本的方法
/// </summary>
public class TextEncrypt
{
private TextEncrypt()
{
}
#region ========加密========
/// <summary>
/// 加密
/// </summary>
/// <param name="Text"></param>
/// <returns></returns>
public static string Encrypt(string Text)
{
return Encrypt(Text, "DimoNet");
}
/// <summary>
/// 加密数据
/// </summary>
/// <param name="Text"></param>
/// <param name="sKey"></param>
/// <returns></returns>
public static string Encrypt(string Text, string sKey)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
byte[] inputByteArray;
inputByteArray = Encoding.Default.GetBytes(Text);
des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
System.IO.MemoryStream ms = new System.IO.MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
StringBuilder ret = new StringBuilder();
foreach (byte b in ms.ToArray())
{
ret.AppendFormat("{0:X2}", b);
}
return ret.ToString();
}
/// <summary>
/// MD5 加密
/// </summary>
/// <param name="password">要加密的字符串</param>
/// <returns></returns>
public static string MD5EncryptPassword(string password, int? length = null)
{
if (password == null)
{
throw new ArgumentNullException("password");
}
return MD5EncryptPassword(password, MD5ResultMode.Strong, length);
}
/// <summary>
/// MD5 加密
/// </summary>
/// <param name="password">要加密的字符串</param>
/// <param name="mode">加密强度</param>
/// <returns></returns>
public static string MD5EncryptPassword(string password, MD5ResultMode mode, int? length = null)
{
if (password == null)
{
throw new ArgumentNullException("password");
}
MD5CryptoServiceProvider provider = new MD5CryptoServiceProvider();
string str = BitConverter.ToString(provider.ComputeHash(Encoding.UTF8.GetBytes(password)));
if (length != null && length == 16)
{
str = BitConverter.ToString(provider.ComputeHash(Encoding.UTF8.GetBytes(password)), 4, 8);
}
provider.Clear();
if (mode != MD5ResultMode.Strong)
{
return str.Replace("-", null).Substring(8, 0x10);
}
return str.Replace("-", null);
}
#endregion
#region ========解密========
/// <summary>
/// 解密
/// </summary>
/// <param name="Text"></param>
/// <returns></returns>
public static string Decrypt(string Text)
{
return Decrypt(Text, "DimoNet");
}
/// <summary>
/// 解密数据
/// </summary>
/// <param name="Text"></param>
/// <param name="sKey"></param>
/// <returns></returns>
public static string Decrypt(string Text, string sKey)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
int len;
len = Text.Length / 2;
byte[] inputByteArray = new byte[len];
int x, i;
for (x = 0; x < len; x++)
{
// i = Convert.ToInt32(Text.Substring(x * 2, 2), 16);
i = System.Convert.ToInt32(Text.Substring(x * 2, 2), 16);
inputByteArray[x] = (byte)i;
}
des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
System.IO.MemoryStream ms = new System.IO.MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
return Encoding.Default.GetString(ms.ToArray());
}
#endregion
/// <summary>
/// Base64 解码
/// </summary>
/// <param name="message"></param>
/// <returns></returns>
public static string Base64Decode(string message)
{
byte[] bytes = Convert.FromBase64String(message);
return Encoding.UTF8.GetString(bytes);
}
/// <summary>
/// Base64 编码
/// </summary>
/// <param name="message"></param>
/// <returns></returns>
public static string Base64Encode(string message)
{
return Convert.ToBase64String(Encoding.UTF8.GetBytes(message));
}
/// <summary>
/// DSA 加密
/// </summary>
/// <param name="password">要加密的字符串</param>
/// <returns></returns>
public static string DSAEncryptPassword(string password)
{
if (password == null)
{
throw new ArgumentNullException("password");
}
DSACryptoServiceProvider provider = new DSACryptoServiceProvider();
string str = BitConverter.ToString(provider.SignData(Encoding.UTF8.GetBytes(password)));
provider.Clear();
return str.Replace("-", null);
}
/// <summary>
/// MD5 加密
/// </summary>
/// <param name="password">要加密的字符串</param>
/// <returns></returns>
public static string EncryptPassword(string password)
{
if (password == null)
{
throw new ArgumentNullException("password");
}
return MD5EncryptPassword(password);
}
/// <summary>
/// MD5 加密
/// </summary>
/// <param name="password">要加密的字符串</param>
/// <returns></returns>
public static string MD5EncryptPassword(string password)
{
if (password == null)
{
throw new ArgumentNullException("password");
}
return MD5EncryptPassword(password, MD5ResultMode.Strong);
}
/// <summary>
/// MD5 加密
/// </summary>
/// <param name="password">要加密的字符串</param>
/// <param name="mode">加密强度</param>
/// <returns></returns>
public static string MD5EncryptPassword(string password, MD5ResultMode mode)
{
if (password == null)
{
throw new ArgumentNullException("password");
}
MD5CryptoServiceProvider provider = new MD5CryptoServiceProvider();
string str = BitConverter.ToString(provider.ComputeHash(Encoding.UTF8.GetBytes(password)));
provider.Clear();
if (mode != MD5ResultMode.Strong)
{
return str.Replace("-", null).Substring(8, 0x10);
}
return str.Replace("-", null);
}
/// <summary>
/// SHA1 加密
/// </summary>
/// <param name="password">要加密的字符串</param>
/// <returns></returns>
public static string SHA1EncryptPassword(string password)
{
if (password == null)
{
throw new ArgumentNullException("password");
}
SHA1CryptoServiceProvider provider = new SHA1CryptoServiceProvider();
string str = BitConverter.ToString(provider.ComputeHash(Encoding.UTF8.GetBytes(password)));
provider.Clear();
return str.Replace("-", null);
}
/// <summary>
/// SHA256 加密
/// </summary>
/// <param name="password">要加密的字符串</param>
/// <returns></returns>
public static string SHA256(string password)
{
byte[] bytes = Encoding.UTF8.GetBytes(password);
SHA256Managed managed = new SHA256Managed();
return Convert.ToBase64String(managed.ComputeHash(bytes));
}
}
}

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