3,826 reputation
31333
bio website
location
age
visits member for 3 years, 5 months
seen Dec 4 at 9:17

Oct
18
comment What exactly is the impact of the hidden subgroup problem on cryptography?
@curious if that's a question, feel free to fill it out a bit and ask it :) You just need to hit the ask question button. If it's an answer, I'd love to hear more of it, feel free to answer below. Even Qs with accepted answers can be improved upon.
Sep
19
revised Should I use ECB or CBC encryption mode for my block cipher?
added 1264 characters in body
Sep
19
comment Should I use ECB or CBC encryption mode for my block cipher?
@owlstead I'll expand on it, give me a bit.
Jul
25
awarded  Nice Question
Jul
21
awarded  Nice Answer
Jul
15
awarded  Popular Question
Jul
12
awarded  Yearling
May
17
awarded  Guru
May
5
awarded  Nice Answer
Apr
24
awarded  Nice Answer
Feb
11
comment Counter Mode in Advanced Encryption Standard(AES) Algorithm
@Bulat CTR's not all that intuitive. As you say, the plain text of the block cipher primitive is in fact shared in this case (the IV+nonce). In the NIST article, you're looking for the recommendation to use $b/2$ where $b$ is the block size of the cipher - i.e. 128 for all AES variants. They do also recommend using full-block nonces - see Paulo's comments on those.
Feb
11
comment Counter Mode in Advanced Encryption Standard(AES) Algorithm
@Bulat well, it is quite often implemented that way as recommended by NIST (Appendix B.2) and no, it does not make the encryption 64-bit. There is still a 128, 192 or 256 bit key on which the security of the system depends.
Feb
4
awarded  Custodian
Feb
4
reviewed Excellent What exactly is a negligible (and non-negligible) function?
Feb
4
reviewed Excellent Blind quantum computing and fully homomorphic encryption
Feb
4
reviewed Satisfactory Deriving Keys for Symmetric Encryption and Authentication
Feb
4
reviewed Excellent Number of states in a LFSR
Feb
4
reviewed Satisfactory Future-Proof Versioning and Validation
Feb
4
reviewed Excellent FIPS 140 compliance for encrypted files
Feb
4
reviewed Excellent On-the-fly computation of AES Round Keys for decryption?