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Apr
28
awarded  modes-of-operation
Apr
28
revised mode of operation in cryptography
added 90 characters in body
Apr
27
comment How robust is my coded output?
@Biv Yeah, your answer there practically takes care of the information of the comments here and the second part of my answer. They are nicely in sync :)
Apr
27
comment How robust is my coded output?
ECRYPT (EU) uses to run stream cipher competitions. I'm not sure if anybody is really interested in non-authenticated block ciphers - we've quite a few good ones. I could imagine tweakable block ciphers become subject to one. If that happens, look here (competitions at Dan Bernsteins cr.yp.to site)
Apr
27
comment How robust is my coded output?
Your current question isn't off topic Clarence - I would not have answered it if that was the case. But we get quite a few questions that simply show some ciphertext or a newly thought out algorithm and we have to close those. This was just a small reminder not to post such questions to you and other aspirant cryptographers.
Apr
27
comment How robust is my coded output?
Note that requests for analyzing a cipher are off topic here. You can however ask if specific parts of your design are considered secure with regards to current practices or not. Overly broad questions or questions that require original research shouldn't be asked here.
Apr
27
answered How robust is my coded output?
Apr
27
comment Backdoor in NIST elliptic curves
@SEJPM Smells like an answer to me, if you combine the two comments.
Apr
27
revised mode of operation in cryptography
added 428 characters in body
Apr
27
revised mode of operation in cryptography
added 428 characters in body
Apr
27
revised mode of operation in cryptography
added 16 characters in body
Apr
27
answered mode of operation in cryptography
Apr
27
comment Best known attack
@Aleph Good point. However I'm not sure if there is any way of weighing memory requirements (or any other requirements) against security reduction. That's probably pretty subjective, unless the boundaries are a given.
Apr
27
answered One time Key Encapsulation Mechanism?
Apr
27
answered Best known attack
Apr
27
comment Deciphering and encrypting using Vigenére square for kids?
I successfully introduced a nephew (about 12 years old) to the ADFGX cipher, but I guess that's a more complex cipher, certainly easy to make mistakes. Best to teach a cipher sitting next to a kid because they can get derailed when making a mistake during deciphering.
Apr
27
revised Length of encryption password aes-256-cbc
added 260 characters in body
Apr
27
answered Length of encryption password aes-256-cbc
Apr
27
comment Practical differences between circuits and turing machines for cryptography
Don't know the answer, but there is nothing wrong with the question in my opinion.
Apr
27
comment Smart Card choice for PKI implementation
Why do you need a low level language? Why do you think that a RNG is only used for key (pair) generation? As for the other requirements, that would basically match any test card that contains an asymmetric coprocessor. Most national schemes would require some kind of (Common Criteria) certification.