Function from C/PHP to Python

[Grom]

Hello everyone :)
I have one problem with that function in C

int calc_passcode(const char* pass, char* code) {
int magic1 = 0x50305735;
int magic2 = 0x12345671;
int sum = 7;
char z;
while ((z = *pass++) != 0) {
if (z == ' ') continue;
if (z == '\t') continue;
magic1 ^= (((magic1 & 0x3f) + sum) * z) + (magic1 << 8);
magic2 += (magic2 << 8) ^ magic1;
sum += z;
}
magic1 &= 0x7fffffff;
magic2 &= 0x7fffffff;
return sprintf(code, "%08x%08x", magic1, magic2);
} // end _calc_passcode();

Can someone help me to rewrite it to python?

There is the same function, in PHP:

function _calc_passcode($pass) {

$magic1 = 0x50305735;
$magic2 = 0x12345671;
$sum = 7;
for ($i = 0; $i < strlen($pass); $i++) {
$z = ord($pass[$i]);
if ($z == 32)
continue;
if ($z == 9)
continue;
$magic1 = $magic1 ^ (((($magic1 & 0x3f) + $sum) * $z) + ($magic1 <<
8));
$magic2 = $magic2 + (($magic2 << 8) ^ $magic1);
$sum += $z;
$magic1 = $magic1 & 0x7fffffff;
$magic2 = $magic2 & 0x7fffffff;
}
return sprintf('%08x%08x', $magic1, $magic2);

} // end _calc_passcode();

Please... its very important to me

[Steven D'Aprano]

On Wed, 06 Aug 2008 20:15:11 -0700, Grom wrote:

Hello everyone :)
I have one problem with that function in C

....

Can someone help me to rewrite it to python?

There is the same function, in PHP:

....

Please... its very important to me

I don't know C or PHP. But since it's important, and because you said
please, let me try:
def calc_passcode(password):
magic1 = 0x50305735
magic2 = 0x12345671
sum = 7
for i in range(len(password)):
z = ord(password[i])
if z == 32 or z == 9:
continue
magic1 = magic1 ^ ((((magic1 & 0x3f) + sum) * z) + (magic1 << 8))
magic2 = magic2 + ((magic2 << 8) ^ magic1)
sum += z
magic1 = magic1 & 0x7fffffff
magic2 = magic2 & 0x7fffffff
return '%08x%08x' % (magic1, magic2)

--
Steven

[Grom]

On 7 Sie, 06:01, Steven D'Aprano <st...@REMOVE-THIS-
cybersource.com.auwrote:

On Wed, 06 Aug 2008 20:15:11 -0700, Grom wrote:

Hello everyone :)
I have one problem with that function in C

...

Can someone help me to rewrite it to python?

There is the same function, in PHP:

...

Please... its very important to me

I don't know C or PHP. But since it's important, and because you said
please, let me try:

def calc_passcode(password):
* * magic1 = 0x50305735
* * magic2 = 0x12345671
* * sum = 7
* * for i in range(len(password)):
* * * * z = ord(password[i])
* * * * if z == 32 or z == 9:
* * * * * * continue
* * * * magic1 = magic1 ^ ((((magic1 & 0x3f) + sum) * z) + (magic1 << 8))
* * * * magic2 = magic2 + ((magic2 << 8) ^ magic1)
* * * * sum += z
* * * * magic1 = magic1 & 0x7fffffff
* * * * magic2 = magic2 & 0x7fffffff
* * return '%08x%08x' % (magic1, magic2)

--
Steven

It works, thanks :)