13,426 reputation
33171
bio website paul-ebermann.tumblr.com
location Berlin, Germany
age
visits member for 3 years, 3 months
seen yesterday

Don't fear to edit my posts: even if I have more reputation than you, I do make mistakes.

I'm now also a Moderator Pro Tempore (= until the first elections) at Cryptography Stack Exchange: feel free to come around and ask some cryptography questions.


My personal name is spoken as /ˈpawlo/ (IPA), in English this would be written similar to Powlo, I think (i.e. the vowels are ow and o), with an accent on the before-last syllable (which is the first in this case). It's the Esperanto form of my given name.

The photo shows my shadow, taken at night. My camera sometimes seems to forget all the other frequencies and only stores the green ones.

My current main private programming project is the game of fencing, an online abstract turn based strategy game. Implemented as a Java applet, using git as a version control system.


Some more links:


Nov
19
revised How does a chosen ciphertext attack work, with a simple example?
mention IND-CCA
Nov
19
answered How does a chosen ciphertext attack work, with a simple example?
Nov
18
comment Encryption technique performance evaluation
@mikeazo: I think this depends on the type of image. The original Tux image has a plain white background and quite some more one-colored areas, which of course causes each block in these to give the same result after encryption. I think it would work less good on a photographic image (at least with a block cipher in ECB mode - single XOR will be still worse, though). (The fact will be complicated that the cipher will likely destroy the image headers, not only change the pixels.)
Nov
18
comment Encryption technique performance evaluation
Welcome to Cryptography Stack Exchange. Your question was migrated here because of being not directly related to software development (the topic of Stack Overflow), and being fully on-topic here. Please register your account here, too, to be able to comment and accept an answer.
Nov
18
comment Encryption technique performance evaluation
What do you understand under "bitwise encryption scheme"? A stream cipher?
Nov
18
answered What is Identity-Based Encryption (IBE) and why is it “better”?
Nov
18
comment Must the order of the groups in a bilinear map be the same?
You could have a bijective (linear) mapping (i.e. an isomorphism) with this order, but not a bilinear (and surjective) mapping. Bilinear mappings are not injective (other than in trivial cases).
Nov
17
reviewed Approve suggested edit on symmetric tag wiki
Nov
17
reviewed Approve suggested edit on symmetric tag wiki excerpt
Nov
17
reviewed Approve suggested edit on provable-security tag wiki
Nov
17
reviewed Approve suggested edit on brute-force-attack tag wiki
Nov
17
reviewed Reject suggested edit on factorization tag wiki
Nov
17
reviewed Approve suggested edit on factorization tag wiki excerpt
Nov
17
reviewed Reject suggested edit on sha-1 tag wiki
Nov
17
reviewed Approve suggested edit on sha-1 tag wiki excerpt
Nov
17
reviewed Approve suggested edit on provable-security tag wiki excerpt
Nov
17
reviewed Reject suggested edit on md5 tag wiki
Nov
17
reviewed Approve suggested edit on md5 tag wiki excerpt
Nov
17
reviewed Approve suggested edit on brute-force-attack tag wiki excerpt
Nov
17
reviewed Approve suggested edit on discrete-logarithm tag wiki