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May
1
comment Alice and Bob's crush
So, if I understand it, Alice computes h^a (her affection), Bob computes h^b (his affection), then they both compute h^ab = h^ba, and they can then compare for equality without revealing their affection to eachother. I could not see the requirement that these operations be carried out modulo a prime number on the Millionaire's problem wiki page. Can you confirm that this is necessary for the scheme to be secure?
Apr
27
comment Permuted vectors
I think you need some function that checks if the permutation is in the original order, such as it's hash.
Mar
1
awarded  Popular Question
Jan
22
comment Automated testing of cipher security for import/export compliance
Yes, correct. Is that a reasonable question?
Jan
13
comment Automated testing of cipher security for import/export compliance
Very interesting. Rephrased the question to include import restrictions.
Jan
13
revised Automated testing of cipher security for import/export compliance
added 162 characters in body; edited title
Jan
13
comment Automated testing of cipher security for import/export compliance
It's a valid answer - upvoted.
Jan
13
comment Automated testing of cipher security for import/export compliance
I updated the question with the new information. I hope the question does not need to be edited anymore.
Jan
13
revised Automated testing of cipher security for import/export compliance
added 162 characters in body; edited title
Jan
13
comment Automated testing of cipher security for import/export compliance
The OpenSSL export ciphers are "exportable with respect to old US crypto regulations". I want to consider other countries export policies. Do you believe that export regulations are no longer a concern?
Jan
13
comment Automated testing of cipher security for import/export compliance
Updated the question to emphasise that this is not about analysis of the code, but of the security properties of the cipher. I imagine that such a system would be able to grade the strength of the cipher, where depending on this strength the cipher is deemed to be exportable or not exportable.
Jan
13
revised Automated testing of cipher security for import/export compliance
added 211 characters in body
Jan
13
comment Automated testing of cipher security for import/export compliance
To test if they meet security requirements, as described by whatever export rules are in place.
Jan
13
asked Automated testing of cipher security for import/export compliance
Oct
25
awarded  Yearling
Oct
21
awarded  Curious
Oct
20
accepted Does a stream cipher require a KDF when it's key is variable length?
Oct
20
asked Does a stream cipher require a KDF when it's key is variable length?
Aug
31
comment Do any non-US ciphers exist?
Thanks e-sushi!
Aug
29
revised Do any non-US ciphers exist?
added 80 characters in body