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Sep
11
answered Regarding Key Strength with DES and Blowfish
Sep
11
reviewed Leave Open How can one generate pairs/triplets/…/n-ary MD5 collisions
Sep
11
revised AES Affine Transformation Polynom Representation
deleted 2 characters in body
Sep
11
answered AES Affine Transformation Polynom Representation
Sep
10
revised DES with the bitwise complement of a key
added 56 characters in body
Sep
10
answered DES with the bitwise complement of a key
Sep
10
comment Are there cryptographic hash functions with homomorphic properties?
The normal definition of "distributive" is that two operations + and * share it if A*(B+C) = (AB) + (AC), for all A, B, C. You might want to clarify what property you are looking for. Also, I suspect that any such property would make it easier to find hash collisions; what is the problem you're actually trying to solve?
Sep
10
reviewed No Action Needed Are there any practical implementation of a homomorphic hashing or signature scheme?
Sep
9
reviewed No Action Needed Isn't a simple Vernam cipher as secure as known symmetric key algorithms?
Sep
9
reviewed Close Selecting a Bouncy Castle named curve for ECC
Sep
8
revised Parallel variant of Carter-Wegman MAC with incremental property
added 19 characters in body
Sep
8
revised Parallel variant of Carter-Wegman MAC with incremental property
added 5 characters in body
Sep
8
revised Parallel variant of Carter-Wegman MAC with incremental property
added 22 characters in body
Sep
8
answered Parallel variant of Carter-Wegman MAC with incremental property
Sep
5
answered Base64 for a hash algorithm
Sep
5
reviewed Leave Open Can Bitcoin HD public keys be used for symmetric encryption?
Sep
4
comment Would xoring 2 independant AES CTRs to produce p-rand introduce vulnerabilities?
@John: no, there are cleverer ways to recover the initial state. However, if you use AES-256, any such method would have to start out with "try to find a 256 key which...", which is completely infeasible. Of course, is there a specific reason why you just don't do simple counter mode with a single AES-256 key?
Sep
4
reviewed Approve ECIES: Purpose of MAC?
Sep
4
answered Would xoring 2 independant AES CTRs to produce p-rand introduce vulnerabilities?
Sep
4
reviewed Close Cracking WWII-era codes - code found on a pigeon's leg in Surrey