Give you a hint where to start scekrit ;-) look at 3.55 lv0 compare it with 3.60 so on!! but you got to have two files exactly with the same keys!!! buy the way its not ecsda its HMAC-SHA1 look at that first yes sha1 is different to HMAC!!! then look at ecsda!!! look at geohot hmac reverse and failoverflow hmac reverse they are both algor but its not what we need its the maths on how to calculate the public key its impossible to calculate the private keys Brute forcing the private keys would take billion of years no hacker has achieved to break the hmac-sha1 the only way we could do it i would recommend looking at quantum computers how to build one trust me i have looked at this for the past month with the dev's on irc channel not even hashcat with 70gb of dictionary or john the ripper cant do it.so for now what we need to do is look for public/iv/key and a exploit on lv2 but it will only be a hen.oh the number you need to work out what is *K (u is so im affraid hope this clears it up.if you want to discuss it further you can always pm me!!!