将 VB6 代码转换为 PHP
Convert VB6 code to PHP
我想将 Visual Basic 6 代码转换为 PHP 代码。我是 PHP 的新手，请帮助我将我的 VB6 代码转换为 PHP。到目前为止，当我尝试将代码转换为 php 代码时，“
中出现错误
CryptRC4 = CryptRC4 & Chr$((pvCryptXor(baS((CLng(baS(li)) + baS(lJ)) Mod 256), Asc(Mid$(sText, lIdx, 1)))));
部分，我也不知道如何继续执行子功能。请参阅下面的代码。 vb 代码用于 encrypt 字符串。我想将其转换为 php 格式。
PHP代码
<?php
function CryptRC4($sText,$sKey){
$baS = array(0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,
48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,
64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,
80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,
96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,
112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,
128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,
144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,
160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,
176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,
192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,
208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,
224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,
240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255);
$baK = array(0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,
48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,
64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,
80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,
96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,
112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,
128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,
144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,
160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,
176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,
192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,
208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,
224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,
240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255);
$bytSwap = 0;
$li = 0;
$lJ = 0;
$lIdx = 0;
for( $lIdx = 0; $lIdx < 256; $lIdx++){
$baS[$lIdx] = $lIdx;
$baK[$lIdx] = ord(substr($sKey, 1 + ($lIdx % strlen($sKey)), 1));
}
for($li = 0; $li < 256; $li++){
$lJ = ($baS[$li] + $baK[$li]) % 256;
$bytSwap = $baS[$li];
$baS[$li] = $baS[$lJ];
$baS[$lJ] = $bytSwap;
}
$li = 0;
$lJ = 0;
$data_str = "";
for($lIdx = 0; $lIdx < strlen($sText); $lIdx++){
$li = ($li + 1) % 256;
$lJ = ($lJ + $baS[$li]) % 256;
$bytSwap = $baS[$li];
$baS[$li] = $baS[$lJ];
$baS[$lJ] = $bytSwap;
#echo chr((pvCryptXor($baS[(round(($baS[$li]) + $baS[$lJ])) % 256], ord(substr($sText, $lIdx, 1)))));
$data_str .= chr((pvCryptXor($baS[(round(($baS[$li]) + $baS[$lJ])) % 256], ord(substr($sText, $lIdx, 1)))));
}
echo $data_str;
}
function pvCryptXor($li, $lJ){
if($li = $lJ){
$pcx = $lJ;
}
else {
$pcx = $li Xor $lJ;
}
return $pcx;
}
unction ToHexDump($sText) {
$lIdx;
for($lIdx = 1; $lIdx < strlen($sText); $lIdx++){
$thd .= Right$("0" & Hex(Asc(Mid(sText, lIdx, 1))), 2)
echo $thd;
}
return $thd;
}
FromHexDump("events");
function FromHexDump($sText) {
$fhd = "";
for($lIdx = 0; $lIdx < strlen($sText); $lIdx++){
$fhd .= chr(CLng("&H" & Mid(sText, lIdx, 2)));
}
return $fhd;
}
?>
VB代码：
Public Function CryptRC4(sText As String, sKey As String) As String
On Error Resume Next
Dim baS(0 To 255) As Byte
Dim baK(0 To 255) As Byte
Dim bytSwap As Byte
Dim li As Long
Dim lJ As Long
Dim lIdx As Long
For lIdx = 0 To 255
baS(lIdx) = lIdx
baK(lIdx) = Asc(Mid$(sKey, 1 + (lIdx Mod Len(sKey)), 1))
Next
For li = 0 To 255
lJ = (lJ + baS(li) + baK(li)) Mod 256
bytSwap = baS(li)
baS(li) = baS(lJ)
baS(lJ) = bytSwap
Next
li = 0
lJ = 0
For lIdx = 1 To Len(sText)
li = (li + 1) Mod 256
lJ = (lJ + baS(li)) Mod 256
bytSwap = baS(li)
baS(li) = baS(lJ)
baS(lJ) = bytSwap
CryptRC4 = CryptRC4 & Chr$((pvCryptXor(baS((CLng(baS(li)) + baS(lJ)) Mod 256), Asc(Mid$(sText, lIdx, 1)))))
Next
End Function
Private Function pvCryptXor(ByVal li As Long, ByVal lJ As Long) As Long
On Error Resume Next
If li = lJ Then
pvCryptXor = lJ
Else
pvCryptXor = li Xor lJ
End If
End Function
Public Function ToHexDump(sText As String) As String
On Error Resume Next
Dim lIdx As Long
For lIdx = 1 To Len(sText)
ToHexDump = ToHexDump & Right$("0" & Hex(Asc(Mid(sText, lIdx, 1))), 2)
Next
End Function
Public Function FromHexDump(sText As String) As String
On Error Resume Next
Dim lIdx As Long
For lIdx = 1 To Len(sText) Step 2
FromHexDump = FromHexDump & Chr$(CLng("&H" & Mid(sText, lIdx, 2)))
Next
End Function
由于它专用于密码，因此您可以省去很多麻烦。 PHP 已获得内置函数（5.5 及更高版本），这些函数旨在处理密码散列以及根据用户提交的密码验证散列密码。通读 PHP 相关 PHP 手册页 http://php.net/manual/en/book.password.php
我修改了你更新后的代码，看起来你只有几个小错误，看看我的更改：
我猜你可以使用内置的 PHP 函数 hex2bin 和 bin2hex 而不是你自己的十六进制转换。
function CryptRC4($sText,$sKey){
$baS = range(0, 255); // you can use range instead of your manual arrays
$baK = range(0, 255);
$bytSwap = 0;
$li = 0;
$lJ = 0;
$lIdx = 0;
for( $lIdx = 0; $lIdx < 256; $lIdx++){
$baS[$lIdx] = $lIdx;
$baK[$lIdx] = ord(substr($sKey, 1 + ($lIdx % strlen($sKey)), 1));
}
for($li = 0; $li < 256; $li++){
$lJ = ($baS[$li] + $baK[$li]) % 256;
$bytSwap = $baS[$li];
$baS[$li] = $baS[$lJ];
$baS[$lJ] = $bytSwap;
}
$li = 0;
$lJ = 0;
$data_str = "";
for($lIdx = 0; $lIdx < strlen($sText); $lIdx++){
$li = ($li + 1) % 256;
$lJ = ($lJ + $baS[$li]) % 256;
$bytSwap = $baS[$li];
$baS[$li] = $baS[$lJ];
$baS[$lJ] = $bytSwap;
#echo chr((pvCryptXor($baS[(round(($baS[$li]) + $baS[$lJ])) % 256], ord(substr($sText, $lIdx, 1)))));
$data_str .= chr((pvCryptXor($baS[(round(($baS[$li]) + $baS[$lJ])) % 256], ord(substr($sText, $lIdx, 1)))));
}
return $data_str; // changed from echo to return
}
function pvCryptXor($li, $lJ){
if($li == $lJ){ // you had an error here, use == to compare instead of a single =
$pcx = $lJ;
}
else {
$pcx = $li ^ $lJ; // XOR function in PHP is the ^ operator
}
return $pcx;
}
$str_hex = bin2hex("events");
$str_enc = CryptRC4($str_hex,"password");
$str_dec = hex2bin(CryptRC4($str_enc,"password"));
echo $str_hex . PHP_EOL . $str_enc . PHP_EOL . $str_dec;
输出：
6576656e7473
'�����~i��
events
所以在我看来，它实际上是正确编码和解码的！？
看来 CryptRC4 函数的原始 VB6 实现来自我在 SO 上的 answer to "VB6 encrypt text using password" question。
所以让我尝试用 VB6 代码段中所有 public 函数的这个简短 php 实现来回答您的问题：
function CryptRC4($text, $key) {
return openssl_encrypt($text, "RC4-40", $key, 1 | 2);
}
function ToHexDump($text) {
return strtoupper(bin2hex($text));
}
function FromHexDump($text) {
return hex2bin($text);
}
你可以像这样练习这些单行：
$text = "a message here";
$password = "password";
$encr = ToHexDump(CryptRC4($text, $password));
$decr = CryptRC4(FromHexDump($encr), $password);
echo $text . PHP_EOL . $encr . PHP_EOL . $decr;
我想将 Visual Basic 6 代码转换为 PHP 代码。我是 PHP 的新手，请帮助我将我的 VB6 代码转换为 PHP。到目前为止，当我尝试将代码转换为 php 代码时，“
CryptRC4 = CryptRC4 & Chr$((pvCryptXor(baS((CLng(baS(li)) + baS(lJ)) Mod 256), Asc(Mid$(sText, lIdx, 1)))));
部分，我也不知道如何继续执行子功能。请参阅下面的代码。 vb 代码用于 encrypt 字符串。我想将其转换为 php 格式。
PHP代码
<?php
function CryptRC4($sText,$sKey){
$baS = array(0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,
48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,
64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,
80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,
96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,
112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,
128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,
144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,
160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,
176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,
192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,
208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,
224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,
240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255);
$baK = array(0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,
48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,
64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,
80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,
96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,
112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,
128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,
144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,
160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,
176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,
192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,
208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,
224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,
240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255);
$bytSwap = 0;
$li = 0;
$lJ = 0;
$lIdx = 0;
for( $lIdx = 0; $lIdx < 256; $lIdx++){
$baS[$lIdx] = $lIdx;
$baK[$lIdx] = ord(substr($sKey, 1 + ($lIdx % strlen($sKey)), 1));
}
for($li = 0; $li < 256; $li++){
$lJ = ($baS[$li] + $baK[$li]) % 256;
$bytSwap = $baS[$li];
$baS[$li] = $baS[$lJ];
$baS[$lJ] = $bytSwap;
}
$li = 0;
$lJ = 0;
$data_str = "";
for($lIdx = 0; $lIdx < strlen($sText); $lIdx++){
$li = ($li + 1) % 256;
$lJ = ($lJ + $baS[$li]) % 256;
$bytSwap = $baS[$li];
$baS[$li] = $baS[$lJ];
$baS[$lJ] = $bytSwap;
#echo chr((pvCryptXor($baS[(round(($baS[$li]) + $baS[$lJ])) % 256], ord(substr($sText, $lIdx, 1)))));
$data_str .= chr((pvCryptXor($baS[(round(($baS[$li]) + $baS[$lJ])) % 256], ord(substr($sText, $lIdx, 1)))));
}
echo $data_str;
}
function pvCryptXor($li, $lJ){
if($li = $lJ){
$pcx = $lJ;
}
else {
$pcx = $li Xor $lJ;
}
return $pcx;
}
unction ToHexDump($sText) {
$lIdx;
for($lIdx = 1; $lIdx < strlen($sText); $lIdx++){
$thd .= Right$("0" & Hex(Asc(Mid(sText, lIdx, 1))), 2)
echo $thd;
}
return $thd;
}
FromHexDump("events");
function FromHexDump($sText) {
$fhd = "";
for($lIdx = 0; $lIdx < strlen($sText); $lIdx++){
$fhd .= chr(CLng("&H" & Mid(sText, lIdx, 2)));
}
return $fhd;
}
?>
VB代码：
Public Function CryptRC4(sText As String, sKey As String) As String
On Error Resume Next
Dim baS(0 To 255) As Byte
Dim baK(0 To 255) As Byte
Dim bytSwap As Byte
Dim li As Long
Dim lJ As Long
Dim lIdx As Long
For lIdx = 0 To 255
baS(lIdx) = lIdx
baK(lIdx) = Asc(Mid$(sKey, 1 + (lIdx Mod Len(sKey)), 1))
Next
For li = 0 To 255
lJ = (lJ + baS(li) + baK(li)) Mod 256
bytSwap = baS(li)
baS(li) = baS(lJ)
baS(lJ) = bytSwap
Next
li = 0
lJ = 0
For lIdx = 1 To Len(sText)
li = (li + 1) Mod 256
lJ = (lJ + baS(li)) Mod 256
bytSwap = baS(li)
baS(li) = baS(lJ)
baS(lJ) = bytSwap
CryptRC4 = CryptRC4 & Chr$((pvCryptXor(baS((CLng(baS(li)) + baS(lJ)) Mod 256), Asc(Mid$(sText, lIdx, 1)))))
Next
End Function
Private Function pvCryptXor(ByVal li As Long, ByVal lJ As Long) As Long
On Error Resume Next
If li = lJ Then
pvCryptXor = lJ
Else
pvCryptXor = li Xor lJ
End If
End Function
Public Function ToHexDump(sText As String) As String
On Error Resume Next
Dim lIdx As Long
For lIdx = 1 To Len(sText)
ToHexDump = ToHexDump & Right$("0" & Hex(Asc(Mid(sText, lIdx, 1))), 2)
Next
End Function
Public Function FromHexDump(sText As String) As String
On Error Resume Next
Dim lIdx As Long
For lIdx = 1 To Len(sText) Step 2
FromHexDump = FromHexDump & Chr$(CLng("&H" & Mid(sText, lIdx, 2)))
Next
End Function
由于它专用于密码，因此您可以省去很多麻烦。 PHP 已获得内置函数（5.5 及更高版本），这些函数旨在处理密码散列以及根据用户提交的密码验证散列密码。通读 PHP 相关 PHP 手册页 http://php.net/manual/en/book.password.php
我修改了你更新后的代码，看起来你只有几个小错误，看看我的更改：
我猜你可以使用内置的 PHP 函数 hex2bin 和 bin2hex 而不是你自己的十六进制转换。
function CryptRC4($sText,$sKey){
$baS = range(0, 255); // you can use range instead of your manual arrays
$baK = range(0, 255);
$bytSwap = 0;
$li = 0;
$lJ = 0;
$lIdx = 0;
for( $lIdx = 0; $lIdx < 256; $lIdx++){
$baS[$lIdx] = $lIdx;
$baK[$lIdx] = ord(substr($sKey, 1 + ($lIdx % strlen($sKey)), 1));
}
for($li = 0; $li < 256; $li++){
$lJ = ($baS[$li] + $baK[$li]) % 256;
$bytSwap = $baS[$li];
$baS[$li] = $baS[$lJ];
$baS[$lJ] = $bytSwap;
}
$li = 0;
$lJ = 0;
$data_str = "";
for($lIdx = 0; $lIdx < strlen($sText); $lIdx++){
$li = ($li + 1) % 256;
$lJ = ($lJ + $baS[$li]) % 256;
$bytSwap = $baS[$li];
$baS[$li] = $baS[$lJ];
$baS[$lJ] = $bytSwap;
#echo chr((pvCryptXor($baS[(round(($baS[$li]) + $baS[$lJ])) % 256], ord(substr($sText, $lIdx, 1)))));
$data_str .= chr((pvCryptXor($baS[(round(($baS[$li]) + $baS[$lJ])) % 256], ord(substr($sText, $lIdx, 1)))));
}
return $data_str; // changed from echo to return
}
function pvCryptXor($li, $lJ){
if($li == $lJ){ // you had an error here, use == to compare instead of a single =
$pcx = $lJ;
}
else {
$pcx = $li ^ $lJ; // XOR function in PHP is the ^ operator
}
return $pcx;
}
$str_hex = bin2hex("events");
$str_enc = CryptRC4($str_hex,"password");
$str_dec = hex2bin(CryptRC4($str_enc,"password"));
echo $str_hex . PHP_EOL . $str_enc . PHP_EOL . $str_dec;
输出：
6576656e7473
'�����~i��
events
所以在我看来，它实际上是正确编码和解码的！？
看来 CryptRC4 函数的原始 VB6 实现来自我在 SO 上的 answer to "VB6 encrypt text using password" question。
所以让我尝试用 VB6 代码段中所有 public 函数的这个简短 php 实现来回答您的问题：
function CryptRC4($text, $key) {
return openssl_encrypt($text, "RC4-40", $key, 1 | 2);
}
function ToHexDump($text) {
return strtoupper(bin2hex($text));
}
function FromHexDump($text) {
return hex2bin($text);
}
你可以像这样练习这些单行：
$text = "a message here";
$password = "password";
$encr = ToHexDump(CryptRC4($text, $password));
$decr = CryptRC4(FromHexDump($encr), $password);
echo $text . PHP_EOL . $encr . PHP_EOL . $decr;