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2024年12月28日发(作者：pathinfo的四层目录如何变成三层)
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#region DES加密解密
///
/// DES加密
///
/// 待加密字串
/// 32位Key值
///
public string DESEncrypt(string strSource)
{
return DESEncrypt(strSource, DESKey);
}
public string DESEncrypt(string strSource, byte[] key)
{
SymmetricAlgorithm sa = ();
= key;
= ;
g = ;
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, Encryptor(),
);
byte[] byt = es(strSource);
(byt, 0, );
inalBlock();
();
return 64String(y());
}
///
/// DES解密
///
/// 待解密的字串
/// 32位Key值
///
public string DESDecrypt(string strSource)
{
return DESDecrypt(strSource, DESKey);
}
public string DESDecrypt(string strSource, byte[] key)
{
SymmetricAlgorithm sa = ();
= key;
= ;
g = ;
ICryptoTransform ct = Decryptor();
byte[] byt = se64String(strSource);
MemoryStream ms = new MemoryStream(byt);
CryptoStream cs = new CryptoStream(ms, ct, );
StreamReader sr = new StreamReader(cs, e);
return End();
}
#endregion
#region 一个用hash实现的加密解密方法
///
/// 加密
///
///
///
public static string EncryptStrByHash(string src)
{
if ( == 0)
{
return "";
}
byte[] HaKey = es((src
"Test").ToCharArray());
+
byte[] HaData = new byte[20];
HMACSHA1 Hmac = new HMACSHA1(HaKey);
CryptoStream cs = new CryptoStream(, Hmac,
);
try
{
(HaData, 0, );
}
finally
{
();
}
string HaResult
64String().Substring(0, 16);
byte[] RiKey
es(Array());
byte[] RiDataBuf
es(Array());
byte[] EncodedBytes = { };
MemoryStream ms = new MemoryStream();
RijndaelManaged rv = new RijndaelManaged();
cs = new CryptoStream(ms, Encryptor(RiKey,
=
=
=
RiKey),
);
try
{
(RiDataBuf, 0, );
inalBlock();
EncodedBytes = y();
}
finally
{
();
();
}
return HaResult + 64String(EncodedBytes);
}
///
/// 解密
///
///
///
public static string DecrypStrByHash(string src)
{
if ( < 40) return "";
byte[] SrcBytes = se64String(ing(16));
byte[] RiKey = es(ing(0,
16).ToCharArray());
byte[] InitialText = new byte[];
RijndaelManaged rv = new RijndaelManaged();
MemoryStream ms = new MemoryStream(SrcBytes);
CryptoStream cs = new CryptoStream(ms, Decryptor(RiKey,
RiKey), );
try
{
(InitialText, 0, );
}
finally
{
();
();
}
Builder Result = new Builder();
for (int i = 0; i < ; ++i) if (InitialText
> 0)
((char)InitialText);
return ng();
}
///
/// 对加密后的密文重新编码,如果密文长>16,则去掉前16个字符,如果长度小于16,
返回空字符串
///
///
///
public string ReEncryptStrByHash(string s)
{
string e = tStrByHash(s);
return (( > 16) ? ing(16) : "");
}
#endregion
#region Md5加密,生成16位或32位,生成的密文都是大写
public static string Md5To16(string str)
{
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
string t2
ng(eHash(es(str)),
8);
=
4,
t2 = e("-", "");
return t2;
}
////
/// MD5 32位加密
///
///
///
public static string Md5To32(string str)
{
string pwd = "";
MD5 md5 = ();
byte[] s = eHash(es(str));
for (int i = 0; i < ; i++)
{
pwd = pwd + ng("X");
}
return pwd;
}
#endregion
#region 3DES加密解密
public string Encrypt3DES(string str)
{
//密钥
string sKey = "wyw308";
// //矢量,可为空
string sIV = "scf521";
// //构造对称算法
SymmetricAlgorithm mCSP = new TripleDESCryptoServiceProvider();
ICryptoTransform ct;
MemoryStream ms;
CryptoStream cs;
byte[] byt;
= se64String(sKey);
= se64String(sIV);
= ;
g = 7;
ct = Encryptor(, );
byt = es(str);
ms = new MemoryStream();
cs = new CryptoStream(ms, ct, );
(byt, 0, );
inalBlock();
();
return 64String(y());
}
///
/// 带指定密钥和矢量的3DES加密
///
///
///
///
///
public string Encrypt3DES(string str, string sKey, string sIV)
{
SymmetricAlgorithm mCSP = new TripleDESCryptoServiceProvider();
ICryptoTransform ct;
MemoryStream ms;
CryptoStream cs;
byte[] byt;
= se64String(sKey);
= se64String(sIV);
= ;
g = 7;
ct = Encryptor(, );
byt = es(str);
ms = new MemoryStream();
cs = new CryptoStream(ms, ct, );
(byt, 0, );
inalBlock();
();
return 64String(y());
}
//解密
public string Decrypt3DES(string Value)
{
string sKey = "wyw308";
string sIV = "scf521";
SymmetricAlgorithm mCSP = new TripleDESCryptoServiceProvider();
ICryptoTransform ct;
MemoryStream ms;
CryptoStream cs;
byte[] byt;
= se64String(sKey);
= se64String(sIV);
= ;
g = 7;
ct = Decryptor(, );
byt = se64String(Value);
ms = new MemoryStream();
cs = new CryptoStream(ms, ct, );
(byt, 0, );
inalBlock();
();
return ing(y());
}
///
/// 带指定密钥和矢量的3DES解密
///
///
///
///
///
public string Decrypt3DES(string str, string sKey, string sIV)
{
SymmetricAlgorithm mCSP = new TripleDESCryptoServiceProvider();
ICryptoTransform ct;
MemoryStream ms;
CryptoStream cs;
byte[] byt;
= se64String(sKey);
= se64String(sIV);
= ;
g = 7;
ct = Decryptor(, );
byt = se64String(str);
ms = new MemoryStream();
cs = new CryptoStream(ms, ct, );
(byt, 0, );
inalBlock();
();
return ing(y());
}
#endregion
#region 一个简单的加密解密方法,只支持英文
public static string EnCryptEnStr(string str) //倒序加1加密
{
byte[] by = new byte[];
for (int i = 0;
i <= - 1;
i++)
{
by = (byte)((byte)str + 1);
}
str = "";
for (int i = - 1;
i >= 0;
i--)
{
str += ((char)by).ToString();
}
return str;
}
public static string DeCryptEnStr(string str) //顺序减1解码
{
byte[] by = new byte[];
for (int i = 0;
i <= - 1;
i++)
{
by = (byte)((byte)str - 1);
}
str = "";
for (int i = - 1;
i >= 0;
i--)
{
str += ((char)by).ToString();
}
return str;
}
#endregion
#region 一个简单的加密解密方法,在上一个的基础上支持中文
public static string EnCryptCnStr(string str)
{
string htext = ""; // blank text
for (int i = 0; i < ; i++)
{
htext = htext + (char)(str + 10 - 1 * 2);
}
return htext;
}
public static string DeCryptCnStr(string str)
{
string dtext = "";
for (int i = 0; i < ; i++)
{
dtext = dtext + (char)(str - 10 + 1 * 2);
}
return dtext;
}
#endregion
#region Url地址编码解码
///
/// 编码Url地址
///
///
///
public static string UrlEncode(string url)
{
byte[] mByte = null;
mByte = oding("GB2312").GetBytes(url);
return ode(mByte);
}
///
/// 解码Url地址
///
///
///
public static string UrlDecode(string url)
{
return ode(url,
oding("GB2312"));
}
#endregion
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