/// <summary>
/// MD5加密,和动网上的16/32位MD5加密结果相同
/// </summary>
/// <param name="strSource">待加密字串</param>
/// <param name="encryptType">16或32值之一,其它则采用.net默认MD5加密算法</param>
/// <returns>加密后的字串</returns>
public string MD5Encrypt(string strSource, MD5EncryptEnum encryptEnum = MD5EncryptEnum.Default)
{
byte[] bytes = Encoding.ASCII.GetBytes(strSource);
byte[] hashValue =
((System.Security.Cryptography.HashAlgorithm)
System.Security.Cryptography.CryptoConfig.CreateFromName("MD5")).ComputeHash(bytes);
StringBuilder sb = new StringBuilder();
switch (encryptEnum)
{
case MD5EncryptEnum.Short:
for (int i = 4; i < 12; i++)
{
sb.Append(hashValue[i].ToString("x2"));
}
break;
case MD5EncryptEnum.Long:
for (int i = 0; i < 16; i++)
{
sb.Append(hashValue[i].ToString("x2"));
}
break;
default:
for (int i = 0; i < hashValue.Length; i++)
{
sb.Append(hashValue[i].ToString("x2"));
}
break;
}
return(sb.ToString());
}
private string MD5Encrypt(byte[] bytes, MD5EncryptEnum encryptEnum)
{
StringBuilder stringBuilder = new StringBuilder();
switch (encryptEnum)
{
case MD5EncryptEnum.Short:
for (int j = 4; j < 12; j++)
{
stringBuilder.Append(bytes[j].ToString("x2"));
}
break;
case MD5EncryptEnum.Long:
for (int k = 0; k < 16; k++)
{
stringBuilder.Append(bytes[k].ToString("x2"));
}
break;
default:
for (int i = 0; i < bytes.Length; i++)
{
stringBuilder.Append(bytes[i].ToString("x2"));
}
break;
}
return(stringBuilder.ToString());
}
public string MD5Encrypt(string strSource, MD5EncryptEnum encryptEnum = MD5EncryptEnum.Default)
{
byte[] bytes = Encoding.ASCII.GetBytes(strSource);
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
byte[] arrays = md5.ComputeHash(bytes);
md5.Clear();
return(MD5Encrypt(arrays, encryptEnum));
}
public string MD5EncryptFile(string filePath, MD5EncryptEnum encryptEnum = MD5EncryptEnum.Default)
{
using (FileStream stream = File.Open(filePath, FileMode.Open))
{
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
byte[] b = md5.ComputeHash(stream);
md5.Clear();
return(MD5Encrypt(b, encryptEnum));
}
}
