Find answers to your questions about Cryptography or help others by answering their Cryptography questions.
I'm trying to generate AES256 key from user input password.The size of the password can be anything from 4 bytes long to 32 bytes long but let's assumeit...
Asked on 11/13/2021 by user81531
1 answerI have recently written an implementation of Serpent and was testing it against known vectors to no avail. Using 256-bit key, I compared my encryption to the test vectors...
Asked on 11/11/2021
1 answerWe have a main database where certain properties are PII and want to setup a read-only replica so other parts of the business can able to access (e.g. analytics) We'd...
Asked on 11/08/2021 by gtramontina
0 answerI'm trying to understand the implementation of elliptic curve point multiplication. I can easily understand the naive double-and-add algorithm, but I'm struggling to find a good explanation / example...
Asked on 11/08/2021 by simbro
1 answerLets say we have a message 'm'.We encrypt 'm' using a stream cipher or any other type of cipher with cryptographic security that produces an output equal in length...
Asked on 11/08/2021 by CM9
1 answerIn RSA, $C=M^e bmod N$ and $d=e^{-1} bmod φ(N)$ are used for encryption and signatures. What is the exact definition of $x^u bmod k$? Also, what is...
Asked on 10/24/2021
2 answerI have a message m="hunter". Let's say we pad it with 2 spaces from the left making the final message as m_dash=" hunter". We are given with c where...
Asked on 10/24/2021 by Aviral Gupta
1 answerHere is some information we got : We know the value of $n$, with size $1043$. We know the value of $p$ (size $20$) and ...
Asked on 10/24/2021 by user81147
1 answerIn the McEliece cryptosystem, is choice of the code known to the attacker? And if a structural attack succeeded and the attacker found the generator matrix of...
Asked on 10/24/2021
1 answerTo introduce the notation for the question, consider a one-time signature algorithm:There are a private signing key $sk$ and a corresponding public key $pk$, generated by $Gen(seed)$.To...
Asked on 10/24/2021 by uk-ny
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