/// <summary>
/// MD5编码
/// </summary>
/// <param name="value">明文</param>
/// <param name="bit">位长</param>
/// <returns></returns>
public static string Get(string value, MD5Bit bit)
{
// Create a new Stringbuilder to collect the bytes
// and create a string.
StringBuilder sBuilder = new StringBuilder();
if (bit == MD5Bit.L32)
{
// Create a new instance of the MD5CryptoServiceProvider object.
System.Security.Cryptography.MD5 md5Hasher = System.Security.Cryptography.MD5.Create();
// Convert the input string to a byte array and compute the hash.
byte[] data = md5Hasher.ComputeHash(Encoding.Default.GetBytes(value));
// Loop through each byte of the hashed data
// and format each one as a hexadecimal string.
for (int i = 0; i < data.Length; i++)
{
sBuilder.Append(data[i].ToString("x2"));
}
}
if (bit == MD5Bit.L16)
{
// This is one implementation of the abstract class MD5.
System.Security.Cryptography.MD5 md5 = new System.Security.Cryptography.MD5CryptoServiceProvider();
string temp = BitConverter.ToString(md5.ComputeHash(Encoding.Default.GetBytes(value)), 4, 8);
temp = temp.Replace("-", "");
sBuilder.Append(temp);
}
// Return the hexadecimal string.
return(sBuilder.ToString());
}
/// <summary>
/// 生成不可逆的32位MD5哈希密码
/// </summary>
/// <param name="strSource">需要加密的字符串</param>
/// <param name="md5Bit">MD5加密的位数</param>
/// <returns>加密后的MD5哈希密码</returns>
public static string MD5Encrypt(string strSource, MD5Bit md5Bit)
{
if (string.IsNullOrEmpty(strSource))
{
throw new SourceIsNullOrEmptyException();
}
string MD5EncryptString = string.Empty;
switch (md5Bit)
{
case MD5Bit.Bit16:
MD5EncryptString = FormsAuthentication.HashPasswordForStoringInConfigFile(strSource, "MD5").ToUpper().Substring(8, 16);
break;
default:
MD5EncryptString = FormsAuthentication.HashPasswordForStoringInConfigFile(strSource, "MD5").ToUpper();
break;
}
return(MD5EncryptString);
}
/// <summary>
/// MD5加密
/// </summary>
/// <param name="data">需要加密的字符串</param>
/// <param name="encode">字符的编码</param>
/// <param name="bit">md5位数，16位|32位，默认用32位</param>
/// <returns></returns>
public static string Encrypt(string data, Encoding encode, MD5Bit bit = MD5Bit.Bit32)
{
MD5 md5 = new MD5CryptoServiceProvider();
byte[] hash;
if (bit == MD5Bit.Bit16)
{
hash = md5.ComputeHash(encode.GetBytes(data), 4, 8);
}
else
{
hash = md5.ComputeHash(encode.GetBytes(data));
}
StringBuilder sb = new StringBuilder(32);
for (int i = 0; i < hash.Length; i++)
{
sb.Append(hash[i].ToString("x").PadLeft(2, '0'));
}
return(sb.ToString());
}
/// <summary>
/// 生成不可逆的32位MD5哈希密码
/// </summary>
/// <param name="strSource">需要加密的字符串</param>
/// <param name="md5Bit">MD5加密的位数</param>
/// <returns>加密后的MD5哈希密码</returns>
public static string MD5Encrypt(string strSource, MD5Bit md5Bit)
{
if (string.IsNullOrEmpty(strSource))
{
throw new SourceIsNullOrEmptyException();
}
string MD5EncryptString = string.Empty;
switch (md5Bit)
{
case MD5Bit.Bit16:
MD5EncryptString = FormsAuthentication.HashPasswordForStoringInConfigFile(strSource, "MD5").ToUpper().Substring(8, 16);
break;
default:
MD5EncryptString = FormsAuthentication.HashPasswordForStoringInConfigFile(strSource, "MD5").ToUpper();
break;
}
return MD5EncryptString;
}
/// <summary>
/// MD5加密
/// </summary>
/// <param name="data">需要加密的字符串</param>
/// <param name="bit">md5位数，16位|32位，默认用32位</param>
/// <returns></returns>
public static string Encrypt(string data, MD5Bit bit = MD5Bit.Bit32)
{
return(Encrypt(data, new UTF8Encoding()));
}
