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Protect questions
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Mar
2
reviewed Reopen Vigenere ciphers : Need help for math analysis
Mar
2
reviewed Looks OK Are there cryptographic schemes that mask as unencrypted traffic?
Mar
1
answered Twofish vs. Serpent vs. AES (or a combo)
Mar
1
reviewed Reviewed How obvious is it to decrypt numerics encrypted with a reused one time pad?
Mar
1
reviewed No Action Needed How does knowing the factorization of N help to obtain the secret?
Mar
1
reviewed No Action Needed Twofish vs. Serpent vs. AES (or a combo)
Mar
1
reviewed Close Multiple keys for the same ciphertext
Mar
1
reviewed Close What are the well known protocols that offer perfect forward secrecy?
Mar
1
reviewed Leave Open Affine transformation in finite field SubBytes
Feb
28
reviewed Approve Multiple keys for the same ciphertext
Feb
27
comment Hashes and Ciphers
Have you lookd up the definitions (e.g. on Wikipedia)? What part don't you understand? It isn't really possible to meaningfully answer “what's the difference between a fish and a bicycle or a railway or a truck”.
Feb
27
reviewed Close Hashes and Ciphers
Feb
25
reviewed Reviewed How does hash function in Elgamal signature scheme prevent existential forgery attack?
Feb
25
comment How does hash function in Elgamal signature scheme prevent existential forgery attack?
This is wrong. Hashing does not participate in identifying the origin of the message at all. It is used as a proxy for the integrity of the message but it's the calculation of the signature from the hash that handles the authenticity.
Feb
25
reviewed Close How to choose an algorithm
Feb
25
comment How to choose an algorithm
If You’re Typing the Letters A-E-S Into Your Code You’re Doing It Wrong. That being said, you do need to know how to choose algorithms if you're designing protocols, but there's no miracle: you need to study the topic for a while before you can make design decisions.
Feb
24
comment Reduction of a modular exponentiation's base does not change the result
How far did you get in the proof? Under what assumptions? Where did you get stuck?
Feb
19
reviewed Reviewed How did the power measurements translate to AES Key?
Feb
17
reviewed Leave Open Given infinite unencrypted and encrypted texts, can I find the algorithm?
Feb
17
reviewed Leave Open How to store and use a Cryptographic Seed in a database