Re: Pollards kangaroo method to reverse engineer private keys

kangaroos have claimed up to 115 bits.

I think that is a new world record but would have to research it to make sure. If so, the person who claimed the 0.115 BTC should get some fame for that - if they want the fame...

Since the jump size is limited to 64 bits it quickly becomes impractical to search ranges that are say 128 bits long without extending the code.

I estimate it would take at least 2^64 jumps for the program to get from one end of that particular range to another, and who knows how much that translates to in terms of running time.

Code:

F737013293C98AC672D66B872468B8C0EF395CF200FE98D3E2F4915D39000000 FFB147D2479E70AE8656DD645BD0E1458D98543C555FF33CCC87B4592C966CB6
8A90D1581D2E2DF040F87DDF49A52B3691AA54F7BE8C0647FAB5F3EEDB000000 0002E3B2800D79DAD9CBFEE901E1E1F0A8991BB922941DD1D9C4E94369C2C31C
FE648F53DF416B87C9EA9E2DC8E456AEED7836A5FC9A40F085D1ECD995000000 FFF9ECC78E1E3477E5EF2FA877761578FF7A8E73CE6F3CD47A6DD2682A9D3D09
DACEE00338E64CED5641E8C2C7679ECC1B72729CCFB5BBC40CED057F5C000000 001EB2689F2D30D9FAAF28A9E16E998702FA4F597D4EC573A7857261D5758245

All depends on the program you use.
What do you mean the jump size is limited? I do believe the max is set at 128, and one could change that, however, for JLP's program, it just can't write to file with the current 126 bit restriction.
I have hopped around the elliptic wheel and picked up many 24 to 32 DP points. I believe I probably hold the useless record of most 32 bit DPs