17 Dec
2003
17 Dec
'03
11:17 p.m.
For that matter, fullkey will be a constant for any key with all the bytes the same. This might constitute a class of weak keys.
Interestingly, though, such keys are not weak in the sense that the all-zero/all-one key is weak in DES. There doesn't seem to be any obvious way to key it such that encryption == decryption. -matt