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age 28
visits member for 2 years, 3 months
seen Nov 23 at 14:15

Oct
29
asked Elliptic Curves Readdition
Jul
25
comment Key Derivation from random salted seed, HMAC and HMAC based KDF
yes but it good enough to be used for encryption? does not need some pre-processing with HMAC approach?
Jul
25
asked Key Derivation from random salted seed, HMAC and HMAC based KDF
Oct
21
comment Key derivation from a random seed
In case I would like to use a hash function like say SHA-1 to produce a random 256 bits. SHA-1 has 160 bits digests. Is it ok if I start with a random sentence say "10-39-298*&*^&^90" has it many times and collect that last 256 bits?
Oct
21
comment Key derivation from a random seed
I would like to use this way to see how random the key derived can be. Its not a new construction is something which is very common if a hash function is used instead of a cipher.
Oct
20
accepted Key derivation from a random seed
Oct
19
asked Key derivation from a random seed
Oct
17
awarded  Scholar
Oct
17
accepted Conditional entropy
Oct
17
asked Conditional entropy
Sep
16
awarded  Student
Sep
16
asked Dimension of Encryption of a linearly dependent set of plaintexts