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Published: 19/02/2017This paper introduces QARMA, a new family of lightweight tweakable block ciphers targeted at applications such as memory encryption, the generation of very short tags for hardwareassisted prevention ... Read moreSource: eprint.iacr.org


Published: 19/02/2017This cypher got a big community a headache The clues are: The key is LONDON or has something to do with it! The crypted text looks like this: ZQBRIPPQOHBFIUPEYLAZAMARZIOZDSYJB So please help us. Read moreSource: crypto.stackexchange.com

Published: 19/02/2017Are there any other alternatives to Sbox's or SP networks to provide diffusion prefferably more basic alternatives which still provide a good degree of security. Thanks Read moreSource: crypto.stackexchange.com

Published: 18/02/2017I am looking after some legacy software that is compiled with VS2005 which uses .Net 2.0 Rinjdael, which fails if the system locale is set to French Canadian. I have read that Canada's encryption key ... Read moreSource: crypto.stackexchange.com

Published: 18/02/2017This question already has an answer here: Equality checking using additive homomorphic encryption 1 answer Given two ciphertexts $c_1=Ek_1(p_1)$ and $c_2=Ek_2(p_2)$ (the keys for $Ek_1$ and $Ek_2$ are ... Read moreSource: crypto.stackexchange.com

Published: 18/02/2017Does the XOR operator provide diffusion if the right side of plain text is XORed against a round key which is then XORed against the left side to produce that side of cipher text, for example in a Fei ... Read moreSource: crypto.stackexchange.com

Published: 18/02/2017I have read about Feistel network and so far only advantages have been listed. Are there any disadvantages to the design? Please could you explain in fairly basic terms? Read moreSource: crypto.stackexchange.com

Published: 18/02/2017My hash : [something that i cant flash], algorithm used: gost algorithm, and mode : CRT, Encryption used : rc2, output encoded by hexa. Read moreSource: crypto.stackexchange.com

Published: 18/02/2017So basically all I can do is use Lagrange's Theorem and figure which factors of the group order are in line, then start trying each of these using the DoubleandAddAlgorithm until I get $\mathcal{O} ... Read moreSource: crypto.stackexchange.com

Published: 18/02/2017Where can I find a trusted source of dated asymmetric cryptographic keys so they : Encrypt files people post with their secrete private key (secrete private key that would be used only one day then de ... Read moreSource: crypto.stackexchange.com

Published: 18/02/2017HMACbased One Time Password (HOTP) was published as an informational IETF RFC 4226 in December 2005. In May, 2011, Timebased Onetime Password Algorithm (TOTP) officially became RFC 6238. What advan ... Read moreSource: crypto.stackexchange.com

Published: 18/02/2017Recently, when I studied the permutation cipher, I saw a matrices structure which is same as permutation cipher. This method was so simple and interesting for me. Let $m$ be $n$bit plain text and $P= ... Read moreSource: crypto.stackexchange.com

Published: 18/02/2017Wanting to know if a message like this is not simply decoded by someone without a password. YOFUPxAoYIvMCx8MN1/t6wZHnjW4CQhWmn2p8lTTe1Spx+Esz0okdWg6KvOoZ7zf16gY30P37MmlaJGIXslKZSwwiqYzeqs36vqn2CnPE4UE ... Read moreSource: crypto.stackexchange.com

Published: 18/02/2017I am trying to verify the multiplication by 02 in Galois Fields for MixColumns function using the L and E look up tables. I could verify (D4)(02) = B3 by manual calculation and using the look up table ... Read moreSource: crypto.stackexchange.com

Published: 18/02/2017Perhaps I am misunderstanding FHE, but from my knowledge, an FHE system is theoretically capable of arbitrary computation. Since this is theoretical talk, let's forget the practicality of actually imp ... Read moreSource: crypto.stackexchange.com

Published: 18/02/2017I'm a newbie to Cryptography. I'm learning about SHA256 hash function now and I wish to have an overall look on it. What are its advantages and disadvantages comparing to other hash functions, like X ... Read moreSource: crypto.stackexchange.com

Published: 18/02/2017So I have been given an assignment to recover an encryption key through the method of brute force. I know the keyspace is 2^16. I have the ciphertext, and I have the encryption/decryption algorithms. ... Read moreSource: crypto.stackexchange.com

Published: 18/02/2017We have always measured password or private key strength by the amount of entropy it contains, but what if the attacker who cracks it is lucky. Consider the following simple scenario, we have 1 bit [0 ... Read moreSource: crypto.stackexchange.com

Published: 18/02/2017In the symmetric version of McEliece cryptosystem, we are adding intentional error vector during encryption. During decryption, first, we cancel the effect of error vector and then multiply the obtain ... Read moreSource: crypto.stackexchange.com

Published: 18/02/2017I am a bit confused about the knapsack implementation regarding the bits and block size for encryption. In the example from this link ( https://nrich.maths.org/2199 ), the knapsack size is 6 and the S ... Read moreSource: crypto.stackexchange.com

Published: 17/02/2017A discrete memoryless source W has words $w_1,w_2,w_3,w_4,w_5,w_6$. a)Does there exist a uniquely decipherable binary encoding for this source with word lengths $2, 2, 4, 4, 5$ and $5$? b)Does there e ... Read moreSource: crypto.stackexchange.com
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