Added crypto library documentation.
Added crypto library documentation.

git-svn-id: e6b182708f0dc7b346a3f60ae86c439ec51c8c4b@123 8f3b247a-914b-0410-8f51-05e301831c82

frewsxcv/keyczar,jbtule/keyczar-dev,matiasherranz/keyczar,kaulkie/keyczar,frewsxcv/keyczar,jbtule/keyczar-dev,asacamano/keyczar,frewsxcv/keyczar,jbtule/keyczar-dev,matiasherranz/keyczar,divegeek/keyczar,divegeek/keyczar,asacamano/keyczar,divegeek/keyczar,matiasherranz/keyczar,jbtule/keyczar,matiasherranz/keyczar,asacamano/keyczar,jbtule/keyczar-dev,jbtule/keyczar,divegeek/keyczar,frewsxcv/keyczar,divegeek/keyczar,jbtule/keyczar,Turlough/keyczar,divegeek/keyczar,matiasherranz/keyczar,jbtule/keyczar-dev,frewsxcv/keyczar,Turlough/keyczar,kaulkie/keyczar,kaulkie/keyczar,asacamano/keyczar,Turlough/keyczar,asacamano/keyczar,jbtule/keyczar-dev,jbtule/keyczar,frewsxcv/keyczar,frewsxcv/keyczar,kaulkie/keyczar,kaulkie/keyczar,jbtule/keyczar,kaulkie/keyczar,matiasherranz/keyczar,Turlough/keyczar,kaulkie/keyczar,jbtule/keyczar,asacamano/keyczar,Turlough/keyczar,Turlough/keyczar,jbtule/keyczar,Turlough/keyczar,jbtule/keyczar-dev,asacamano/keyczar,matiasherranz/keyczar,divegeek/keyczar