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Published: 21/09/2017An Oblivious Parallel RAM (OPRAM) provides a general method to simulate any Parallel RAM (PRAM) program, such that the resulting memory access patterns leak nothing about secret inputs. OPRAM was orig ... Read moreSource: eprint.iacr.org


Published: 21/09/2017I would like to apply CTR mode on a arbitrary length which isn't multiple of block size. Is this possible without applying padding. In case we apply padding  how does the decryption algorithm know th ... Read moreSource: crypto.stackexchange.com

Published: 21/09/2017Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies , Vol. 1, No. Read moreSource: www.topix.com

Published: 21/09/2017I think the answer is no, however, I don't know how to go about proving this. Read moreSource: crypto.stackexchange.com

Published: 21/09/2017If the permutation is not well thought out, how will this effect the cipher's avalanche effect. For example, if the permutation in PRESENT was in some way different (just made up without any thought) ... Read moreSource: crypto.stackexchange.com

Published: 20/09/2017I am trying to construct a 8$\times$256 sbox that allows to decode 4 bits using the last 2 LSB of 4 bytes, depending only on a single bit flip in (each?) one of those LSB bits. I started like this : g ... Read moreSource: crypto.stackexchange.com

Published: 20/09/2017WhatsApp and the government of the United Kingdom are in a battle over the future of encryption, and there doesn't seem to be a clean resolution in sight. WhatsApp refused a UK government request ... Read moreSource: www.topix.com

Published: 20/09/2017I'm using the Curve25519 code (from http://www.dlbeer.co.nz/oss/c25519.html ), and trying to convert from a public signing key (Edwards form) to a public keyexchange key (Montgomery form). There's te ... Read moreSource: crypto.stackexchange.com

Published: 20/09/2017We are working on something that requires us to encrypt some content before sending it over SMS. As such we are limited to a maximum of 1,280 bits of encrypted content. A few thoughts I have from my r ... Read moreSource: crypto.stackexchange.com

Published: 20/09/2017So I made this program which cracks SHA256 hashes but I observed that there were a few passwords which had had matches for more than one SHA256 hashes. Is that normal? Does salting have something to d ... Read moreSource: crypto.stackexchange.com

Published: 20/09/2017Consider the following experiment for a privatekey encryption scheme $\Pi = ( \text{Gen}, \text{Enc}, \text{Dec})$ and a fixed polynomial $q=q(n)$. An adversary $\mathcal A$ is given input $1^n$, and ... Read moreSource: crypto.stackexchange.com

Published: 20/09/2017Referencing: Project Euler Problem 182 Clarification I'm trying to determine the (minimum) period for a given value of p/q. For a simple case where p=19,q=23 the period of repeating order is 132 (whic ... Read moreSource: crypto.stackexchange.com

Published: 20/09/2017I'm inheriting a project that stores a used password in a config file, which is generated by the user giving their password in plain text, and the project giving back a key generated through .NET's Rf ... Read moreSource: crypto.stackexchange.com

Published: 20/09/2017How fast in terms of the number AES encryption/sec, would an Internet encryptor need to be if the plain text rate is 10gb/sec? Read moreSource: crypto.stackexchange.com

Published: 20/09/2017I am studying elliptic curves problems, which also includes study of related protocols such as ECIES. The problem is that I don't understand the notation $\$. What does this operation mean? Some stuf ... Read moreSource: crypto.stackexchange.com

Published: 20/09/2017This question already has an answer here: What does the $\$ operation mean in cryptographic notation? 1 answer Can someone tell me in laymens terms what this is? $$K_i = \mathrm{Hash}(Z \ \mathit{Co ... Read moreSource: crypto.stackexchange.com

Published: 20/09/2017I am looking at implementing AES128 bit encryption of a data stream. Since AES128 is a block cipher, which is inherently less robust than a stream cipher, I have considered configuring AES128 as a str ... Read moreSource: crypto.stackexchange.com

Published: 20/09/2017In an $(s,r,n)$ramp scheme, we require that any subset of at least $r$ parties can recover the secret, while any subset of size at most $s$ cannot learn anything about the secret. In Bogdanov et al.' ... Read moreSource: crypto.stackexchange.com

Published: 20/09/2017Reductions modulo Mersenne primes are extremely fast, and there are several of a suitable size for modpbased DiffieHellman (such as $2^{2281}1$). Is there any reason such primes are not commonly us ... Read moreSource: crypto.stackexchange.com

Published: 20/09/2017Steven Wolfram of Mathematica uses a pseudorandom number generator based on Rule 30 for applications in Mathematica software but I would like to know if a pseudorandom generator based on Rule 30 is cr ... Read moreSource: crypto.stackexchange.com

Published: 19/09/2017Can someone tell me in laymens terms what this is? Ki = Hash(Z  Counter  [SharedInfo]) What do the double pipes represent? Read moreSource: crypto.stackexchange.com
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