153 reputation
6
bio website
location
age
visits member for 2 years, 6 months
seen May 1 '13 at 16:27

May
4
comment Creating an encryption key from several other keys and using hash functions
AFAIK key stretching is needed because of the fact that passwords chosen by humans almost always have much lower entropy/permutations than automatically generated random keys. In the case of automatically generated random keys with sufficient entropy/permutations (i think 128 bit strength is still enough for most ordinary purposes) the computations are already done by scientists/mathematicians that obviously must have considered brute-force attacks. isn't it so?
May
4
awarded  Student
May
4
comment Creating an encryption key from several other keys and using hash functions
Yes, both keys are chosen by the program and both have sufficient number of permutations (more than 128 bits of entropy).
May
2
asked Creating an encryption key from several other keys and using hash functions