asp.net with c# 可以用以下这个MD5函数吗/<% '-------------------------------------- ' COCOON Disk Manager v3 -- MD5 Function ' ' 经典 MD5 算法的ASP实现 ' -- 摘自某国外网站 '-------------------------------------- Private Const BITS_TO_A_BYTE = 8 Private Const BYTES_TO_A_WORD = 4 Private Const BITS_TO_A_WORD = 32
Private m_lOnBits(30) Private m_l2Power(30)
Private Function LShift(lValue, iShiftBits) If iShiftBits = 0 Then LShift = lValue Exit Function ElseIf iShiftBits = 31 Then If lValue And 1 Then LShift = &H80000000 Else LShift = 0 End If Exit Function ElseIf iShiftBits < 0 Or iShiftBits > 31 Then Err.Raise 6 End If
If (lValue And m_l2Power(31 - iShiftBits)) Then LShift = ((lValue And m_lOnBits(31 - (iShiftBits + 1))) * m_l2Power(iShiftBits)) Or &H80000000 Else LShift = ((lValue And m_lOnBits(31 - iShiftBits)) * m_l2Power(iShiftBits)) End If End Function
Private Function RShift(lValue, iShiftBits) If iShiftBits = 0 Then RShift = lValue Exit Function ElseIf iShiftBits = 31 Then If lValue And &H80000000 Then RShift = 1 Else RShift = 0 End If Exit Function ElseIf iShiftBits < 0 Or iShiftBits > 31 Then Err.Raise 6 End If
RShift = (lValue And &H7FFFFFFE) \ m_l2Power(iShiftBits)
If (lValue And &H80000000) Then RShift = (RShift Or (&H40000000 \ m_l2Power(iShiftBits - 1))) End If End Function
Private Function RotateLeft(lValue, iShiftBits) RotateLeft = LShift(lValue, iShiftBits) Or RShift(lValue, (32 - iShiftBits)) End Function
Private Function AddUnsigned(lX, lY) Dim lX4 Dim lY4 Dim lX8 Dim lY8 Dim lResult
lX8 = lX And &H80000000 lY8 = lY And &H80000000 lX4 = lX And &H40000000 lY4 = lY And &H40000000
lResult = (lX And &H3FFFFFFF) + (lY And &H3FFFFFFF)
If lX4 And lY4 Then lResult = lResult Xor &H80000000 Xor lX8 Xor lY8 ElseIf lX4 Or lY4 Then If lResult And &H40000000 Then lResult = lResult Xor &HC0000000 Xor lX8 Xor lY8 Else lResult = lResult Xor &H40000000 Xor lX8 Xor lY8 End If Else lResult = lResult Xor lX8 Xor lY8 End If
AddUnsigned = lResult End Function
Private Function md5_F(x, y, z) md5_F = (x And y) Or ((Not x) And z) End Function
Private Function md5_G(x, y, z) md5_G = (x And z) Or (y And (Not z)) End Function
Private Function md5_H(x, y, z) md5_H = (x Xor y Xor z) End Function
Private Function md5_I(x, y, z) md5_I = (y Xor (x Or (Not z))) End Function
Private Sub md5_FF(a, b, c, d, x, s, ac) a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_F(b, c, d), x), ac)) a = RotateLeft(a, s) a = AddUnsigned(a, b) End Sub
Private Sub md5_GG(a, b, c, d, x, s, ac) a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_G(b, c, d), x), ac)) a = RotateLeft(a, s) a = AddUnsigned(a, b) End Sub
Private Sub md5_HH(a, b, c, d, x, s, ac) a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_H(b, c, d), x), ac)) a = RotateLeft(a, s) a = AddUnsigned(a, b) End Sub
Private Sub md5_II(a, b, c, d, x, s, ac) a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_I(b, c, d), x), ac)) a = RotateLeft(a, s) a = AddUnsigned(a, b) End Sub
Private Function ConvertToWordArray(sMessage) Dim lMessageLength Dim lNumberOfWords Dim lWordArray() Dim lBytePosition Dim lByteCount Dim lWordCount
Private Function WordToHex(lValue) Dim lByte Dim lCount
For lCount = 0 To 3 lByte = RShift(lValue, lCount * BITS_TO_A_BYTE) And m_lOnBits(BITS_TO_A_BYTE - 1) WordToHex = WordToHex & Right("0" & Hex(lByte), 2) Next End Function
asp下的MD5默认是16位的,而.NET下的是32位的。 所以判断的时候做一下转换就行了。 dim psw as string="用户输入的密码" Dim password As String password = fa.HashPasswordForStoringInConfigFile(psw, "MD5") Dim oldPsw As String = read.Item("UserPassword").ToString '原ASP数据库中的加密密码 '判断 If LCase(Left(Mid(password, 9), 16)) = LCase(oldPsw) Then '密码正确 else '密码错误 end ifwww.soeye.cn
'--------------------------------------
' COCOON Disk Manager v3 -- MD5 Function
'
' 经典 MD5 算法的ASP实现
' -- 摘自某国外网站
'--------------------------------------
Private Const BITS_TO_A_BYTE = 8
Private Const BYTES_TO_A_WORD = 4
Private Const BITS_TO_A_WORD = 32
Private m_lOnBits(30)
Private m_l2Power(30)
Private Function LShift(lValue, iShiftBits)
If iShiftBits = 0 Then
LShift = lValue
Exit Function
ElseIf iShiftBits = 31 Then
If lValue And 1 Then
LShift = &H80000000
Else
LShift = 0
End If
Exit Function
ElseIf iShiftBits < 0 Or iShiftBits > 31 Then
Err.Raise 6
End If
If (lValue And m_l2Power(31 - iShiftBits)) Then
LShift = ((lValue And m_lOnBits(31 - (iShiftBits + 1))) * m_l2Power(iShiftBits)) Or &H80000000
Else
LShift = ((lValue And m_lOnBits(31 - iShiftBits)) * m_l2Power(iShiftBits))
End If
End Function
Private Function RShift(lValue, iShiftBits)
If iShiftBits = 0 Then
RShift = lValue
Exit Function
ElseIf iShiftBits = 31 Then
If lValue And &H80000000 Then
RShift = 1
Else
RShift = 0
End If
Exit Function
ElseIf iShiftBits < 0 Or iShiftBits > 31 Then
Err.Raise 6
End If
RShift = (lValue And &H7FFFFFFE) \ m_l2Power(iShiftBits)
If (lValue And &H80000000) Then
RShift = (RShift Or (&H40000000 \ m_l2Power(iShiftBits - 1)))
End If
End Function
Private Function RotateLeft(lValue, iShiftBits)
RotateLeft = LShift(lValue, iShiftBits) Or RShift(lValue, (32 - iShiftBits))
End Function
Private Function AddUnsigned(lX, lY)
Dim lX4
Dim lY4
Dim lX8
Dim lY8
Dim lResult
lX8 = lX And &H80000000
lY8 = lY And &H80000000
lX4 = lX And &H40000000
lY4 = lY And &H40000000
lResult = (lX And &H3FFFFFFF) + (lY And &H3FFFFFFF)
If lX4 And lY4 Then
lResult = lResult Xor &H80000000 Xor lX8 Xor lY8
ElseIf lX4 Or lY4 Then
If lResult And &H40000000 Then
lResult = lResult Xor &HC0000000 Xor lX8 Xor lY8
Else
lResult = lResult Xor &H40000000 Xor lX8 Xor lY8
End If
Else
lResult = lResult Xor lX8 Xor lY8
End If
AddUnsigned = lResult
End Function
Private Function md5_F(x, y, z)
md5_F = (x And y) Or ((Not x) And z)
End Function
Private Function md5_G(x, y, z)
md5_G = (x And z) Or (y And (Not z))
End Function
Private Function md5_H(x, y, z)
md5_H = (x Xor y Xor z)
End Function
Private Function md5_I(x, y, z)
md5_I = (y Xor (x Or (Not z)))
End Function
Private Sub md5_FF(a, b, c, d, x, s, ac)
a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_F(b, c, d), x), ac))
a = RotateLeft(a, s)
a = AddUnsigned(a, b)
End Sub
Private Sub md5_GG(a, b, c, d, x, s, ac)
a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_G(b, c, d), x), ac))
a = RotateLeft(a, s)
a = AddUnsigned(a, b)
End Sub
Private Sub md5_HH(a, b, c, d, x, s, ac)
a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_H(b, c, d), x), ac))
a = RotateLeft(a, s)
a = AddUnsigned(a, b)
End Sub
Private Sub md5_II(a, b, c, d, x, s, ac)
a = AddUnsigned(a, AddUnsigned(AddUnsigned(md5_I(b, c, d), x), ac))
a = RotateLeft(a, s)
a = AddUnsigned(a, b)
End Sub
Private Function ConvertToWordArray(sMessage)
Dim lMessageLength
Dim lNumberOfWords
Dim lWordArray()
Dim lBytePosition
Dim lByteCount
Dim lWordCount
Const MODULUS_BITS = 512
Const CONGRUENT_BITS = 448
lMessageLength = Len(sMessage)
lNumberOfWords = (((lMessageLength + ((MODULUS_BITS - CONGRUENT_BITS) \ BITS_TO_A_BYTE)) \ (MODULUS_BITS \ BITS_TO_A_BYTE)) + 1) * (MODULUS_BITS \ BITS_TO_A_WORD)
ReDim lWordArray(lNumberOfWords - 1)
lBytePosition = 0
lByteCount = 0
Do Until lByteCount >= lMessageLength
lWordCount = lByteCount \ BYTES_TO_A_WORD
lBytePosition = (lByteCount Mod BYTES_TO_A_WORD) * BITS_TO_A_BYTE
lWordArray(lWordCount) = lWordArray(lWordCount) Or LShift(Asc(Mid(sMessage, lByteCount + 1, 1)), lBytePosition)
lByteCount = lByteCount + 1
Loop
lWordCount = lByteCount \ BYTES_TO_A_WORD
lBytePosition = (lByteCount Mod BYTES_TO_A_WORD) * BITS_TO_A_BYTE
lWordArray(lWordCount) = lWordArray(lWordCount) Or LShift(&H80, lBytePosition)
lWordArray(lNumberOfWords - 2) = LShift(lMessageLength, 3)
lWordArray(lNumberOfWords - 1) = RShift(lMessageLength, 29)
ConvertToWordArray = lWordArray
End Function
Private Function WordToHex(lValue)
Dim lByte
Dim lCount
For lCount = 0 To 3
lByte = RShift(lValue, lCount * BITS_TO_A_BYTE) And m_lOnBits(BITS_TO_A_BYTE - 1)
WordToHex = WordToHex & Right("0" & Hex(lByte), 2)
Next
End Function
Public Function MD5(sMessage)
m_lOnBits(0) = CLng(1)
m_lOnBits(1) = CLng(3)
m_lOnBits(2) = CLng(7)
m_lOnBits(3) = CLng(15)
m_lOnBits(4) = CLng(31)
m_lOnBits(5) = CLng(63)
m_lOnBits(6) = CLng(127)
m_lOnBits(7) = CLng(255)
m_lOnBits(8) = CLng(511)
m_lOnBits(9) = CLng(1023)
m_lOnBits(10) = CLng(2047)
…………………………
………………
/// 传入明文,返回用MD5加密后的字符串
/// </summary>
/// <param name="str">要加密的字符串</param>
/// <returns>用MD5加密后的字符串</returns>
public static string ToMD5( string str)
{
return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(str, "md5");
}
/// <summary>
/// 传入明文,返回用MD%加密后的字符串
/// </summary>
/// <param name="str">要加密的字符串</param>
/// <returns>用sha1加密后的字符串</returns>
public static string ToSHA1( string str)
{
return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(str, "sha1");
}
System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(str, "md5");得出来的字符串并不等于asp中 md5(str)
所以判断的时候做一下转换就行了。
dim psw as string="用户输入的密码"
Dim password As String
password = fa.HashPasswordForStoringInConfigFile(psw, "MD5")
Dim oldPsw As String = read.Item("UserPassword").ToString '原ASP数据库中的加密密码
'判断
If LCase(Left(Mid(password, 9), 16)) = LCase(oldPsw) Then
'密码正确
else
'密码错误
end ifwww.soeye.cn
public string md5(string str,int code)
{
if(code==16) //16位MD5加密(取32位加密的9~25字符)
{
return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(str,"MD5").ToLower().Substring(8,16) ;
}
else//32位加密
{
return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(str,"MD5").ToLower();
}
}
谢谢各位!