: From: Schirado <schirado@lab.cc.wmich.edu> : >Printed keyIDs have been incresed to 32 bits, as there were enough keys : >out there that 24-bit keyIDs were no longer sufficiently unique. The : >previous 24-bit keyID is the LAST 6 digits of an 8-digit 32-bit keyID. : >For example, what was printed as A966DD now appears as C7A966DD. : So even though the keyservers only have 5,000 or so registered users, : there are enough people out there using PGP and NOT registering their : keys with the servers that this extra bit of coding was necessary? Hmm. : 24 bits gives us 16,777,216 unique ID's. 32 bits gives us 4,294,967,296. : Are there really over 17 million PGP'ers out there, or is my math-impaired : brain missing something painfully obvious? It's the old "birthday paradox" game. If you're generating numbers at random within a certain range, how many numbers do you have to generate before you have a probability >= 0.5 of generating two the same? Do it first for range = 0..2^24-1 and then for range = 0..2^32-1 ... G