I don't know the answer, but I'll point out that the length of the name of that function:
HashPasswordForStoringInConfigFile
is the same as of this:
supercalifragilisticexpialidocious
I propose that we use this is an upper limit on the reasonable length of identifiers.
Source:
http://arstechnica.infopop.net/OpenTopic/page?a=tpc&s=50009562&f=6330927813&m=4080918355