Am Freitag, 5. August 2016, 12:07:50 CEST schrieb stef: Hi stef,
> dear list, > > with the spectre of IoT looming over us - making us all warm and fuzzy about > our memories of security in the 80ies - i was wondering, if you have an > 32bit (not considering 8bit systems for their very limited support for > crypto) embedded device with heavily constrained processing power and > memory (<0.5MB) but still enough to perform all basic crypto algos, how > would it be the best do derive a key from user input (assuming we have a > keypad e.g.) argon2 seems to be optimized for PCs. is the best one can do > in such situations a naive: > > H0 = password > H_n = hash(H_n-1, device unique salt), 1<=n<max_iterations Do not invent the wheel again yourself, use SP800-132 which kind of does what you propose here, but in a slightly different fashion. In addition, it is more reviewed and even widely used (e.g dm-crypt). Ciao Stephan _______________________________________________ cryptography mailing list [email protected] http://lists.randombit.net/mailman/listinfo/cryptography
