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seen May 1 at 18:49

May
1
comment Where does the GSM A5 key come from? Why isn't DH used?
Just to add additional context, the GSM crypto architecture was developed in the late 80's. In 2015 we have a much greater insight into practical attacks and much more capable hardware. I suspect DH was simply not possible for a mobile phone in the late 80's, even if we wanted the guarantees it provides (and worked around the dangers of DH.)
Oct
24
awarded  Supporter
May
5
answered Does it have sense a One-Time Session Cookie?
May
5
comment Does it have sense a One-Time Session Cookie?
Could you tell us what website you are looking at? That may help.
May
13
awarded  Teacher
May
13
answered Does versioning an encrypted file make it less secure?
Dec
7
awarded  Student