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Difference between revisions of "XWIS:APGAR"
From ModEnc
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| − | APGAR is a token sent by a C&C game to tell XWIS | + | APGAR is a token sent by a C&C game to tell XWIS the players' password. The password is encrypted using a weak algorithm. |
Example (decrypted password "reneproj"): | Example (decrypted password "reneproj"): | ||
| Line 6: | Line 6: | ||
</pre> | </pre> | ||
The closing zero seems to have a special function. | The closing zero seems to have a special function. | ||
| + | |||
| + | Algorithm to calculate encrypted password: | ||
| + | <pre> | ||
| + | string apgar(string input) { | ||
| + | lookup = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789" | ||
| + | out = "" | ||
| + | i = 1 | ||
| + | while (i <= 8) { | ||
| + | left = input[i] | ||
| + | right = input[length[input] - i + 1] | ||
| + | |||
| + | x = left & 1 ? ((left << 1) ^ (left & 1)) & right : left ^ right | ||
| + | |||
| + | out += lookup[x & 63] | ||
| + | i++ | ||
| + | } | ||
| + | return out | ||
| + | } | ||
| + | </pre> | ||
[[Category:XWIS Protocol]] | [[Category:XWIS Protocol]] | ||
Revision as of 23:34, 18 June 2008
APGAR is a token sent by a C&C game to tell XWIS the players' password. The password is encrypted using a weak algorithm.
Example (decrypted password "reneproj"):
apgar Ykbcaxop 0
The closing zero seems to have a special function.
Algorithm to calculate encrypted password:
string apgar(string input) {
lookup = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
out = ""
i = 1
while (i <= 8) {
left = input[i]
right = input[length[input] - i + 1]
x = left & 1 ? ((left << 1) ^ (left & 1)) & right : left ^ right
out += lookup[x & 63]
i++
}
return out
}
