正文
关于md5vb.net的信息
提示：扫一扫查出行【扫一扫了解最新限行尾号】
复制提示
VB中这个MD5算法怎么用？
怀疑该篇文章提供的MD5算法有问题
下面提供一个经过调试成功的MD5算法
调用方法：
Private Sub Command1_Click()
Text2 = Md5_String_Calc(Text1)
End Sub
-------------------------------------
' ════════════════
' | |
' | MD5加密类模块 |
' ————————————————
' | |
' ════════════════
Option Explicit
Private Const OFFSET_4 = 4294967296#
Private Const MAXINT_4 = 2147483647
Private State(4) As Long
Private ByteCounter As Long
Private ByteBuffer(63) As Byte
Private Const S11 = 7
Private Const S12 = 12
Private Const S13 = 17
Private Const S14 = 22
Private Const S21 = 5
Private Const S22 = 9
Private Const S23 = 14
Private Const S24 = 20
Private Const S31 = 4
Private Const S32 = 11
Private Const S33 = 16
Private Const S34 = 23
Private Const S41 = 6
Private Const S42 = 10
Private Const S43 = 15
Private Const S44 = 21
Property Get RegisterA() As String
RegisterA = State(1)
End Property
Property Get RegisterB() As String
RegisterB = State(2)
End Property
Property Get RegisterC() As String
RegisterC = State(3)
End Property
Property Get RegisterD() As String
RegisterD = State(4)
End Property
Public Function Md5_String_Calc(SourceString As String) As String
MD5Init
MD5Update LenB(StrConv(SourceString, vbFromUnicode)), StringToArray(SourceString)
MD5Final
Md5_String_Calc = GetValues
End Function
Public Function Md5_File_Calc(InFile As String) As String
On Error GoTo errorhandler
GoSub begin
errorhandler:
Md5_File_Calc = ""
Exit Function
begin:
Dim FileO As Integer
FileO = FreeFile
Call FileLen(InFile)
Open InFile For Binary Access Read As #FileO
MD5Init
Do While Not EOF(FileO)
Get #FileO, , ByteBuffer
If Loc(FileO) LOF(FileO) Then
ByteCounter = ByteCounter + 64
MD5Transform ByteBuffer
End If
Loop
ByteCounter = ByteCounter + (LOF(FileO) Mod 64)
Close #FileO
MD5Final
Md5_File_Calc = GetValues
End Function
Private Function StringToArray(InString As String) As Byte()
Dim I As Integer, bytBuffer() As Byte
ReDim bytBuffer(LenB(StrConv(InString, vbFromUnicode)))
bytBuffer = StrConv(InString, vbFromUnicode)
StringToArray = bytBuffer
End Function
Public Function GetValues() As String
GetValues = LongToString(State(1)) LongToString(State(2)) LongToString(State(3)) LongToString(State(4))
End Function
Private Function LongToString(Num As Long) As String
Dim A As Byte, B As Byte, C As Byte, d As Byte
A = Num And HFF
If A 16 Then LongToString = "0" Hex(A) Else LongToString = Hex(A)
B = (Num And HFF00) \ 256
If B 16 Then LongToString = LongToString "0" Hex(B) Else LongToString = LongToString Hex(B)
C = (Num And HFF0000) \ 65536
If C 16 Then LongToString = LongToString "0" Hex(C) Else LongToString = LongToString Hex(C)
If Num 0 Then d = ((Num And H7F000000) \ 16777216) Or H80 Else d = (Num And HFF000000) \ 16777216
If d 16 Then LongToString = LongToString "0" Hex(d) Else LongToString = LongToString Hex(d)
End Function
Public Sub MD5Init()
ByteCounter = 0
State(1) = UnsignedToLong(1732584193#)
State(2) = UnsignedToLong(4023233417#)
State(3) = UnsignedToLong(2562383102#)
State(4) = UnsignedToLong(271733878#)
End Sub
Public Sub MD5Final()
Dim dblBits As Double, padding(72) As Byte, lngBytesBuffered As Long
padding(0) = H80
dblBits = ByteCounter * 8
lngBytesBuffered = ByteCounter Mod 64
If lngBytesBuffered = 56 Then MD5Update 56 - lngBytesBuffered, padding Else MD5Update 120 - ByteCounter, padding
padding(0) = UnsignedToLong(dblBits) And HFF
padding(1) = UnsignedToLong(dblBits) \ 256 And HFF
padding(2) = UnsignedToLong(dblBits) \ 65536 And HFF
padding(3) = UnsignedToLong(dblBits) \ 16777216 And HFF
padding(4) = 0
padding(5) = 0
padding(6) = 0
padding(7) = 0
MD5Update 8, padding
End Sub
Public Sub MD5Update(InputLen As Long, InputBuffer() As Byte)
Dim II As Integer, I As Integer, J As Integer, K As Integer, lngBufferedBytes As Long, lngBufferRemaining As Long, lngRem As Long
lngBufferedBytes = ByteCounter Mod 64
lngBufferRemaining = 64 - lngBufferedBytes
ByteCounter = ByteCounter + InputLen
If InputLen = lngBufferRemaining Then
For II = 0 To lngBufferRemaining - 1
ByteBuffer(lngBufferedBytes + II) = InputBuffer(II)
Next II
MD5Transform ByteBuffer
lngRem = (InputLen) Mod 64
For I = lngBufferRemaining To InputLen - II - lngRem Step 64
For J = 0 To 63
ByteBuffer(J) = InputBuffer(I + J)
Next J
MD5Transform ByteBuffer
Next I
lngBufferedBytes = 0
Else
I = 0
End If
For K = 0 To InputLen - I - 1
ByteBuffer(lngBufferedBytes + K) = InputBuffer(I + K)
Next K
End Sub
Private Sub MD5Transform(Buffer() As Byte)
Dim X(16) As Long, A As Long, B As Long, C As Long, d As Long
A = State(1)
B = State(2)
C = State(3)
d = State(4)
Decode 64, X, Buffer
FF A, B, C, d, X(0), S11, -680876936
FF d, A, B, C, X(1), S12, -389564586
FF C, d, A, B, X(2), S13, 606105819
FF B, C, d, A, X(3), S14, -1044525330
FF A, B, C, d, X(4), S11, -176418897
FF d, A, B, C, X(5), S12, 1200080426
FF C, d, A, B, X(6), S13, -1473231341
FF B, C, d, A, X(7), S14, -45705983
FF A, B, C, d, X(8), S11, 1770035416
FF d, A, B, C, X(9), S12, -1958414417
FF C, d, A, B, X(10), S13, -42063
FF B, C, d, A, X(11), S14, -1990404162
FF A, B, C, d, X(12), S11, 1804603682
FF d, A, B, C, X(13), S12, -40341101
FF C, d, A, B, X(14), S13, -1502002290
FF B, C, d, A, X(15), S14, 1236535329
GG A, B, C, d, X(1), S21, -165796510
GG d, A, B, C, X(6), S22, -1069501632
GG C, d, A, B, X(11), S23, 643717713
GG B, C, d, A, X(0), S24, -373897302
GG A, B, C, d, X(5), S21, -701558691
GG d, A, B, C, X(10), S22, 38016083
GG C, d, A, B, X(15), S23, -660478335
GG B, C, d, A, X(4), S24, -405537848
GG A, B, C, d, X(9), S21, 568446438
GG d, A, B, C, X(14), S22, -1019803690
GG C, d, A, B, X(3), S23, -187363961
GG B, C, d, A, X(8), S24, 1163531501
GG A, B, C, d, X(13), S21, -1444681467
GG d, A, B, C, X(2), S22, -51403784
GG C, d, A, B, X(7), S23, 1735328473
GG B, C, d, A, X(12), S24, -1926607734
HH A, B, C, d, X(5), S31, -378558
HH d, A, B, C, X(8), S32, -2022574463
HH C, d, A, B, X(11), S33, 1839030562
HH B, C, d, A, X(14), S34, -35309556
HH A, B, C, d, X(1), S31, -1530992060
HH d, A, B, C, X(4), S32, 1272893353
HH C, d, A, B, X(7), S33, -155497632
HH B, C, d, A, X(10), S34, -1094730640
HH A, B, C, d, X(13), S31, 681279174
HH d, A, B, C, X(0), S32, -358537222
HH C, d, A, B, X(3), S33, -722521979
HH B, C, d, A, X(6), S34, 76029189
HH A, B, C, d, X(9), S31, -640364487
HH d, A, B, C, X(12), S32, -421815835
HH C, d, A, B, X(15), S33, 530742520
HH B, C, d, A, X(2), S34, -995338651
II A, B, C, d, X(0), S41, -198630844
II d, A, B, C, X(7), S42, 1126891415
II C, d, A, B, X(14), S43, -1416354905
II B, C, d, A, X(5), S44, -57434055
II A, B, C, d, X(12), S41, 1700485571
II d, A, B, C, X(3), S42, -1894986606
II C, d, A, B, X(10), S43, -1051523
II B, C, d, A, X(1), S44, -2054922799
II A, B, C, d, X(8), S41, 1873313359
II d, A, B, C, X(15), S42, -30611744
II C, d, A, B, X(6), S43, -1560198380
II B, C, d, A, X(13), S44, 1309151649
II A, B, C, d, X(4), S41, -145523070
II d, A, B, C, X(11), S42, -1120210379
II C, d, A, B, X(2), S43, 718787259
II B, C, d, A, X(9), S44, -343485551
State(1) = LongOverflowAdd(State(1), A)
State(2) = LongOverflowAdd(State(2), B)
State(3) = LongOverflowAdd(State(3), C)
State(4) = LongOverflowAdd(State(4), d)
End Sub
Private Sub Decode(Length As Integer, OutputBuffer() As Long, InputBuffer() As Byte)
Dim intDblIndex As Integer, intByteIndex As Integer, dblSum As Double
For intByteIndex = 0 To Length - 1 Step 4
dblSum = InputBuffer(intByteIndex) + InputBuffer(intByteIndex + 1) * 256# + InputBuffer(intByteIndex + 2) * 65536# + InputBuffer(intByteIndex + 3) * 16777216#
OutputBuffer(intDblIndex) = UnsignedToLong(dblSum)
intDblIndex = intDblIndex + 1
Next intByteIndex
End Sub
Private Function FF(A As Long, B As Long, C As Long, d As Long, X As Long, S As Long, ac As Long) As Long
A = LongOverflowAdd4(A, (B And C) Or (Not (B) And d), X, ac)
A = LongLeftRotate(A, S)
A = LongOverflowAdd(A, B)
End Function
Private Function GG(A As Long, B As Long, C As Long, d As Long, X As Long, S As Long, ac As Long) As Long
A = LongOverflowAdd4(A, (B And d) Or (C And Not (d)), X, ac)
A = LongLeftRotate(A, S)
A = LongOverflowAdd(A, B)
End Function
Private Function HH(A As Long, B As Long, C As Long, d As Long, X As Long, S As Long, ac As Long) As Long
A = LongOverflowAdd4(A, B Xor C Xor d, X, ac)
A = LongLeftRotate(A, S)
A = LongOverflowAdd(A, B)
End Function
Private Function II(A As Long, B As Long, C As Long, d As Long, X As Long, S As Long, ac As Long) As Long
A = LongOverflowAdd4(A, C Xor (B Or Not (d)), X, ac)
A = LongLeftRotate(A, S)
A = LongOverflowAdd(A, B)
End Function
Function LongLeftRotate(value As Long, Bits As Long) As Long
Dim lngSign As Long, lngI As Long
Bits = Bits Mod 32
If Bits = 0 Then LongLeftRotate = value: Exit Function
For lngI = 1 To Bits
lngSign = value And HC0000000
value = (value And H3FFFFFFF) * 2
value = value Or ((lngSign 0) And 1) Or (CBool(lngSign And H40000000) And H80000000)
Next
LongLeftRotate = value
End Function
Private Function LongOverflowAdd(Val1 As Long, Val2 As Long) As Long
Dim lngHighWord As Long, lngLowWord As Long, lngOverflow As Long
lngLowWord = (Val1 And HFFFF) + (Val2 And HFFFF)
lngOverflow = lngLowWord \ 65536
lngHighWord = (((Val1 And HFFFF0000) \ 65536) + ((Val2 And HFFFF0000) \ 65536) + lngOverflow) And HFFFF
LongOverflowAdd = UnsignedToLong((lngHighWord * 65536#) + (lngLowWord And HFFFF))
End Function
Private Function LongOverflowAdd4(Val1 As Long, Val2 As Long, val3 As Long, val4 As Long) As Long
Dim lngHighWord As Long, lngLowWord As Long, lngOverflow As Long
lngLowWord = (Val1 And HFFFF) + (Val2 And HFFFF) + (val3 And HFFFF) + (val4 And HFFFF)
lngOverflow = lngLowWord \ 65536
lngHighWord = (((Val1 And HFFFF0000) \ 65536) + ((Val2 And HFFFF0000) \ 65536) + ((val3 And HFFFF0000) \ 65536) + ((val4 And HFFFF0000) \ 65536) + lngOverflow) And HFFFF
LongOverflowAdd4 = UnsignedToLong((lngHighWord * 65536#) + (lngLowWord And HFFFF))
End Function
Private Function UnsignedToLong(value As Double) As Long
If value 0 Or value = OFFSET_4 Then Error 6
If value = MAXINT_4 Then UnsignedToLong = value Else UnsignedToLong = value - OFFSET_4
End Function
Private Function LongToUnsigned(value As Long) As Double
If value 0 Then LongToUnsigned = value + OFFSET_4 Else LongToUnsigned = value
End Function
相关问答
Q1: vb.net 怎么计算选择的文件md5值，写在textbox中？
Public Function md5(ByVal a As String) As String
Dim tempmd5 As System.Security.Cryptography.MD5 = New System.Security.Cryptography.MD5CryptoServiceProvider()
Dim bytResult() As Byte = tempmd5.ComputeHash(System.Text.Encoding.Default.GetBytes(a))
Dim strResult As String = BitConverter.ToString(bytResult)
strResult = strResult.Replace("-", "")
Return strResult
End Function
如果要计算文件的就把参数改成字节数组就可以md5vb.net了，然后获取文件GetBytes（）传进去就可以md5vb.net了。
Q2: 求破解md5： 1125c23b25ee31e73769554d8f448244
解密的没有...
加密的自己做一个吧
3.119 icePub_getMD5
l 函数原型：
int WINAPI icePub_getMD5(char* pBuf, int buffLen,char *strResult)
输入：pBuf 待处理的数据
nLength 待处理数据的长度
输出：strResult MD5结果串，32字节
返回码:
l VC连接Lib方式声明
__declspec(dllexport)
int WINAPI icePub_getMD5(char* pBuf, int buffLen,char *strResult);
l 动态调用例程
VC sample代码：
char buff[1024];
char buff2[1024];
strcpy(buff2,"Walk At Familiar Alley, Pursue Concordand's Footfall, Between Front And Back, What Course To Follow?");
typedef int (WINAPI ICEPUB_GETMD5)( char* pBuf, int buffLen,char *strResult);
ICEPUB_GETMD5 *icePub_getMD5 = 0;
HINSTANCE hDLLDrv = LoadLibrary("icePubDll.dll");
if(hDLLDrv)
{
icePub_getMD5=(ICEPUB_GETMD5 *)GetProcAddress(hDLLDrv,"icePub_getMD5");
}
if(icePub_getMD5)
icePub_getMD5(buff2,strlen(buff2),buff);
if(hDLLDrv)
FreeLibrary(hDLLDrv);
AfxMessageBox(buff);
VB sample 代码：
Private Declare Function icePub_getMD5 Lib "icePubDll.dll" (ByVal pBuf As String, ByVal buffLen As Integer, ByVal strResult As String) As Integer
Dim a2 As Integer
Dim buff As String
Dim buff2 As String
buff2="Go with This life Loneliness, carried off Day And Night Dreariness, Between Sun And Moon, Tell Words from one's heart Each Other."
buff=Space(1024)
a2=icePub_getMD5(buff2,LenB(buff2),buff)
MsgBox buff
3.121 icePub_getMD5FromFile
l 函数原型：
int WINAPI icePub_getMD5FromFile(char *strFilePath,char *strResult)
输入：strFilePath 待MD5的文件名
输出：strResult MD5结果串，32字节
返回码:
l VC连接Lib方式声明
__declspec(dllexport)
int WINAPI icePub_getMD5FromFile(char *strFilePath,char *strResult);
l 动态调用例程
VC sample代码：
char buff[1024];
typedef int (WINAPI ICEPUB_GETMD5FROMFILE)(char *strFilePath,char *strResult);
ICEPUB_DESDECRYPTIONSTRING *icePub_getMD5FromFile = 0;
HINSTANCE hDLLDrv = LoadLibrary("icePubDll.dll");
if(hDLLDrv)
{
icePub_getMD5FromFile=(ICEPUB_DESDECRYPTIONSTRING *)GetProcAddress(hDLLDrv,"icePub_getMD5FromFile");
}
if(icePub_getMD5FromFile)
icePub_getMD5FromFile("D:\\icePubDLL.dll",buff);
if(hDLLDrv)
FreeLibrary(hDLLDrv);
AfxMessageBox(buff);
VB sample 代码：
Private Declare Function icePub_getMD5FromFile Lib "icePubDll.dll" (ByVal strFilePath As String, ByVal strResult As String) As Integer
Dim a2 As Integer
Dim buff As String
buff=Space(1024)
a2=icePub_getMD5FromFile("D:\icePubDLL.dll",buff)
MsgBox buff
3.120 icePub_getMD5FromString
l 函数原型：
int WINAPI icePub_getMD5FromString(char *strData,char *strResult)
输入：strData 待处理的文本串
输出：strResult MD5结果串，32字节
返回码:
l VC连接Lib方式声明
__declspec(dllexport)
int WINAPI icePub_getMD5FromString(char *strData,char *strResult);
l 动态调用例程
VC sample代码：
char buff[1024];
char buff2[1024];
strcpy(buff2,"Walk At Familiar Alley, Pursue Concordand's Footfall, Between Front And Back, What Course To Follow?");
typedef int (WINAPI ICEPUB_GETMD5FROMSTRING)(char *strData,char *strResult);
ICEPUB_GETMD5FROMSTRING *icePub_getMD5FromString = 0;
HINSTANCE hDLLDrv = LoadLibrary("icePubDll.dll");
if(hDLLDrv)
{
icePub_getMD5FromString=(ICEPUB_GETMD5FROMSTRING *)GetProcAddress(hDLLDrv,"icePub_getMD5FromString");
}
if(icePub_getMD5FromString)
icePub_getMD5FromString(buff2,buff);
if(hDLLDrv)
FreeLibrary(hDLLDrv);
AfxMessageBox(buff);
VB sample 代码：
Private Declare Function icePub_getMD5FromString Lib "icePubDll.dll" (ByVal strData As String, ByVal strResult As String) As Integer
Dim a2 As Integer
Dim buff As String
Dim buff2 As String
buff2="Go with This life Loneliness, carried off Day And Night Dreariness, Between Sun And Moon, Tell Words from one's heart Each Other."
buff=Space(1024)
a2=icePub_getMD5FromString(buff2,buff)
MsgBox buff
下载
是否可以解决您的问题？
Q3: java MD5 对应的C#方法
在vb.net里面，可以这样算文件的MD5值，你用工具转换过来就有C#的代码了。
Private Function GetFileMD5(fileName As String) As String
Dim hashValue As Byte()
Dim sb As New StringBuilder()
Try
Dim fileStream As New FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read, 4096, True)
Using md5 = New System.Security.Cryptography.MD5CryptoServiceProvider()
hashValue= md5.ComputeHash(fileStream)
End Using
Dim i As Integer = 0
sb.Capacity = hashValue.Length * 2
While i hashValue.Length
sb.Append(hashValue(i).ToString("x2"))
i += 1
End While
Catch ex As Exception
Throw
End Try
Return sb.ToString()
End Function
运行结果
小文件
系统自带工具运行结果
大文件
以上代码小文件（十几K）、大文件（几G）都测试过
md5vb.net的介绍就聊到这里吧，感谢你花时间阅读本站内容，更多关于、md5vb.net的信息别忘了在本站进行查找喔。
