Why no body create Kangaroo 120 bit pool?
if can do it make pool fast to found key
I think may be fast before found 64 bit bitcrack pool
compare now bitcrack scan pool already 1 quadrillion from all 9 quadrillion on 64 bit
1,000,000,000,000,000,000 = 1 Quintillion
calculate kangaroo
2**199 = 664613997892457936451903530140172288
split kangaroo for each 2**64 for small keyspace search
2**199/2**64
664613997892457936451903530140172288/18446744073709551616 = 36028797018963968 time(slot)
36,028,797,018,963,968 = 30 Quadrillion scan
1,000,000,000,000,000 = 1 Quadrillion
1,000,000,000,000,000,000 = 1 Quintillion = 1000 Quadrillion
kangaroo is power full can scan 64 bit on 1 minute
For a kangaroo pool, you would not split the keyspace up. You would wind up doing way more group operations versus everyone (all gpus) working on the full keyspace.
The pool would have to have powerful hardware. Huge SSD harddrives (to hold distinguished points + kangaroo positions of all gpus), lots of RAM, and lots of CPU cores. Merging the files is the issue/biggest challenge.
That's why I tried with the Baby Step Giant Step. But everyone thinks they can come up with new creative way to solve #120 and do it on their own. Some people probably have the hardware to do so, but not most.
EDIT: Just to add about breaking #120 down into bite size chunks of 64 bits. That would be 72,057,594,037,927,936 ranges to be searched. So that would also be 72,057,594,037,927,936 minutes to search and cover entire range. But the biggest problem is, you still wouldn't be 100% to find the key unless everyone has high -m option set. But you are right, It would be faster than brute forcing #64. 50% of brute forcing #64 = 2^63 . Kangaroo only requires 2^60 +-1 .