network profile
| bio | website | |
|---|---|---|
| location | Germany | |
| age | 34 | |
| visits | member for | 9 months |
| seen | Mar 6 at 14:14 | |
| stats | profile views | 1 |
I'm currently a PhD student and have studied CS. I started programming as a hobby at the age of about 9 (Basic on a Commodore C64) if I remember correcly and progressed from there (Pascal, Delphi, Java). But only recently (about 3 yrs ago) I started learning and using the C++ language which comes in quite handy for the performance critical computations I'm mostly doing right now (tomography, other big nonlinear optimization problems).
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Aug 28 |
answered | Secure Hash Function based on AES |
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Aug 24 |
comment |
What is the effect of the different AES key lengths? Is there something wrong with the blocksize being 128 bits for larger keys? $2^{256}$ different keys still represent a very tiny fraction of all possible 128-bit-wide permutations. |
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Aug 20 |
awarded | Teacher |
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Aug 18 |
answered | Does the MixColumns step come before or after AddRoundKey in AES decryption? |
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Aug 16 |
comment |
Are there any specific requirements for the function $F$ in a Feistel cipher? +1 Thanks for pointing out the paper by Luby and Rackoff. Seems to be very interesting. I would have guessed 3 Feistel rounds are fine. Apparently, I was wrong. |
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Aug 16 |
comment |
What algorithm would give the shortest ciphertext for very short plaintexts? +1 for your suggestion with 8 random bytes, 5 bytes payload and 3 zero bytes for integrity / authentication. |
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Aug 16 |
awarded | Supporter |
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Aug 16 |
answered | Are there hash algorithms with variable length output? |
