The number of possible keys is:
115,792,089,237,316,195,423,570,985,008,687,907,852,837,564,279,074,904,382,605,163,141,518,161,494,336
They already have equipment that can search Quetta keys per second
Quetta = 1,000,000,000,000,000,000,000,000,000,000
Cool , so now you only need
115,792,089,237,316,195,423,570,985,008,687,907,852,837,564,279 seconds or
3,671,743,063,080,802,746,815,416,825,491,118,336,277 years
or if the efficiency increases 1 million times and you have 1 trillion of those machines you will still need 150 billion times the age of the universe to find them.
With Quetta keys per second, yes. But with
1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 keys per second.
only 3,5 years. The life span of a Trout