What about 135 puzzle? I have managed to reduce 135 bits down to 120 bits how long would it take?.
Why did you stop the reducing at 120 bits? I'd go full-blown to 1 bit. Let us know if it's a zero or not.
The possible public keys exponentially grow.. By the time i reduce 3 digits from the end if have 1 trillion plus possible public keys
Really? That's a lot of keys. So let me formulate the question another way: once you reduce 135 to 120 bits, is that equivalent or not to having 32768 public keys, of which one of them corresponds to a 120-bit key, while the rest of 32767 correspond to 256-bit keys?
If so, how do you pick the one public key to search for, to have a good reason of calling this as a "reduction" and not an "expansion"?