dion
April 22nd, 2002, 03:37
do anyone have trying SClock Plus v1.62 ?
after exploring the target, i found her steps below :
- read the keyfile in %08LX format
- do some gcd() function
- do somet'in with the remainder
- store as decoded user name
- while do some checksum
- and there's little hidden check
i arrange the gcd() function and stuck with it. is this known as a kind of crypto function ? it do 13 iteration to get the final remainder and have an initial value (that's from keyfile). i think this function must be somehow reversible, coz it used to produce the username that'll be appear in about box. if not, how do the author make the keyfile ?
after exploring the target, i found her steps below :
- read the keyfile in %08LX format
- do some gcd() function
- do somet'in with the remainder
- store as decoded user name
- while do some checksum
- and there's little hidden check
i arrange the gcd() function and stuck with it. is this known as a kind of crypto function ? it do 13 iteration to get the final remainder and have an initial value (that's from keyfile). i think this function must be somehow reversible, coz it used to produce the username that'll be appear in about box. if not, how do the author make the keyfile ?