C# (md5 加密疑问)
我想要加密md5 请问需要怎么实现？？我想把 文本框1的内容加密成md5
下面的文本框第一个显示加密成16 位长度的md5
第二个显示加密成32位的md5
[解决办法]
链接里面不是有写到吗？建好那个class文件，方法贴进去。
然后调用就可以了。
string strUserpwd =MD5.Encrypt(txtUserPwd.Text,16); //16位
string strUserpwd =MD5.Encrypt(txtUserPwd.Text,32); //32位
不过没经过测试，你可以试一试。
[解决办法]
版主的资源非常好！
教你怎么用吧~
右键单击你的解决方案-》添加-》类-》MD5
在class MD5中加入如下代码
const int BITS_TO_A_BYTE = 8;
const int BYTES_TO_A_WORD = 4;
const int BITS_TO_A_WORD = 32;
private static long[] m_lOnBits = new long[30 + 1];
private static long[] m_l2Power = new long[30 + 1];
private static long LShift(long lValue, long iShiftBits)
{
long LShift = 0;
if (iShiftBits == 0)
{
LShift = lValue;
return LShift;
}
else
{
if (iShiftBits == 31)
{
if (Convert.ToBoolean(lValue & 1))
{
LShift = 0x80000000;
}
else
{
LShift = 0;
}
return LShift;
}
else
{
if (iShiftBits < 0
[解决办法]
iShiftBits > 31)
{
// Err.Raise 6;
}
}
}
if (Convert.ToBoolean((lValue & m_l2Power[31 - iShiftBits])))
{
LShift = ((lValue & m_lOnBits[31 - (iShiftBits + 1)]) * m_l2Power[iShiftBits])
[解决办法]
0x80000000;
}
else
{
LShift = ((lValue & m_lOnBits[31 - iShiftBits]) * m_l2Power[iShiftBits]);
}
return LShift;
}
private static long RShift(long lValue, long iShiftBits)
{
long RShift = 0;
if (iShiftBits == 0)
{
RShift = lValue;
return RShift;
}
else
{
if (iShiftBits == 31)
{
if (Convert.ToBoolean(lValue & 0x80000000))
{
RShift = 1;
}
else
{
RShift = 0;
}
return RShift;
}
else
{
if (iShiftBits < 0
[解决办法]
iShiftBits > 31)
{
// Err.Raise 6;
}
}
}
RShift = (lValue & 0x7FFFFFFE) / m_l2Power[iShiftBits];
if (Convert.ToBoolean((lValue & 0x80000000)))
{
RShift = (RShift
[解决办法]
(0x40000000 / m_l2Power[iShiftBits - 1]));
}
return RShift;
}
private static long RotateLeft(long lValue, long iShiftBits)
{
long RotateLeft = 0;
RotateLeft = LShift(lValue, iShiftBits)
[解决办法]
RShift(lValue, (32 - iShiftBits));
return RotateLeft;
}
private static long AddUnsigned(long lX, long lY)
{
long AddUnsigned = 0;
long lX4 = 0;
long lY4 = 0;
long lX8 = 0;
long lY8 = 0;
long lResult = 0;
lX8 = lX & 0x80000000;
lY8 = lY & 0x80000000;
lX4 = lX & 0x40000000;
lY4 = lY & 0x40000000;
lResult = (lX & 0x3FFFFFFF) + (lY & 0x3FFFFFFF);
if (Convert.ToBoolean(lX4 & lY4))
{
lResult = lResult ^ 0x80000000 ^ lX8 ^ lY8;
}
else if (Convert.ToBoolean(lX4
[解决办法]
lY4))
{
if (Convert.ToBoolean(lResult & 0x40000000))
{
lResult = lResult ^ 0xC0000000 ^ lX8 ^ lY8;
}
else
{
lResult = lResult ^ 0x40000000 ^ lX8 ^ lY8;
}
}
else
{
lResult = lResult ^ lX8 ^ lY8;
}
AddUnsigned = lResult;
return AddUnsigned;
}
private static long md5_F(long x, long y, long z)
{
long md5_F = 0;
md5_F = (x & y)
[解决办法]
((~x) & z);
return md5_F;
}
private static long md5_G(long x, long y, long z)
{
long md5_G = 0;
md5_G = (x & z)
[解决办法]
(y & (~z));
return md5_G;
}
private static long md5_H(long x, long y, long z)
{
long md5_H = 0;
md5_H = (x ^ y ^ z);
return md5_H;
}
private static long md5_I(long x, long y, long z)
{
long md5_I = 0;
md5_I = (y ^ (x
[解决办法]
(~z)));
return md5_I;
}
private static void md5_FF(ref long a, long b, long c, long d, long x, long s, long ac)
{
a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_F(b, c, d), x), ac));
a = RotateLeft(a, s);
a = AddUnsigned(a, b);
}
private static void md5_GG(ref long a, long b, long c, long d, long x, long s, long ac)
{
a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_G(b, c, d), x), ac));
a = RotateLeft(a, s);
a = AddUnsigned(a, b);
}
private static void md5_HH(ref long a, long b, long c, long d, long x, long s, long ac)
{
a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_H(b, c, d), x), ac));
a = RotateLeft(a, s);
a = AddUnsigned(a, b);
}
private static void md5_II(ref long a, long b, long c, long d, long x, long s, long ac)
{
a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_I(b, c, d), x), ac));
a = RotateLeft(a, s);
a = AddUnsigned(a, b);
}
private static long[] ConvertToWordArray(string sMessage)
{
long[] ConvertToWordArray = null;
int lMessageLength = 0;
int lNumberOfWords = 0;
long[] lWordArray = null;
int lBytePosition = 0;
int lByteCount = 0;
int lWordCount = 0;
const int MODULUS_BITS = 512;
const int CONGRUENT_BITS = 448;
lMessageLength = sMessage.Length;
lNumberOfWords = (((lMessageLength + ((MODULUS_BITS - CONGRUENT_BITS) / BITS_TO_A_BYTE)) / (MODULUS_BITS / BITS_TO_A_BYTE)) + 1) * (MODULUS_BITS / BITS_TO_A_WORD);
lWordArray = new long[lNumberOfWords];
lBytePosition = 0;
lByteCount = 0;
while (lByteCount < lMessageLength)
{
lWordCount = lByteCount / BYTES_TO_A_WORD;
lBytePosition = (lByteCount % BYTES_TO_A_WORD) * BITS_TO_A_BYTE;
lWordArray[lWordCount] = lWordArray[lWordCount]
[解决办法]
LShift(Convert.ToByte(sMessage.Substring(lByteCount, 1).ToCharArray()[0]), lBytePosition);
lByteCount = lByteCount + 1;
}
lWordCount = lByteCount / BYTES_TO_A_WORD;
lBytePosition = (lByteCount % BYTES_TO_A_WORD) * BITS_TO_A_BYTE;
lWordArray[lWordCount] = lWordArray[lWordCount]
[解决办法]
LShift(0x80, lBytePosition);
lWordArray[lNumberOfWords - 2] = LShift(lMessageLength, 3);
lWordArray[lNumberOfWords - 1] = RShift(lMessageLength, 29);
ConvertToWordArray = lWordArray;
return ConvertToWordArray;
}
private static string WordToHex(long lValue)
{
string WordToHex = "";
long lByte = 0;
int lCount = 0;
for (lCount = 0; lCount <= 3; lCount++)
{
lByte = RShift(lValue, lCount * BITS_TO_A_BYTE) & m_lOnBits[BITS_TO_A_BYTE - 1];
WordToHex = WordToHex + (("0" + ToHex(lByte)).Substring(("0" + ToHex(lByte)).Length - 2));
}
return WordToHex;
}
private static string ToHex(long dec)
{
string strhex = "";
while (dec > 0)
{
strhex = tohex(dec % 16) + strhex;
dec = dec / 16;
}
return strhex;
}
private static string tohex(long hex)
{
string strhex = "";
switch (hex)
{
case 10: strhex = "a"; break;
case 11: strhex = "b"; break;
case 12: strhex = "c"; break;
case 13: strhex = "d"; break;
case 14: strhex = "e"; break;
case 15: strhex = "f"; break;
default: strhex = hex.ToString(); break;
}
return strhex;
}
