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Published: 17/01/2017I installed GPG 2.1 on OSX using the installer on https://sourceforge.net/p/gpgosx/docu/Download/ but it appears to install only gpg2 and not gpgagent, for some reason. How can I get it to work? Read moreSource: crypto.stackexchange.com


Published: 17/01/2017He, FIQ13. F jlm. Hvl qzpg ue cnxu mwetiur, yvwo. Read moreSource: crypto.stackexchange.com

Published: 17/01/2017In a recent question on using the same curve for signing and ECDH it was noted for the Ed25519 curve and Curve25519: Nitpick: the curves are birationally equivalent, not isomorphic. Now this term show ... Read moreSource: crypto.stackexchange.com

Published: 17/01/2017Consider a simplest transposition cipher, such as one with block size 8 and encryption key 43725681, the decryption key will be 84215637. As the keys are different, may I say a transposition cipher is ... Read moreSource: crypto.stackexchange.com

Published: 16/01/2017As an appendix for my bachelor thesis, I proposed a solution for a TRNG that uses JPEG images as entropy source. It's open source and available on GitHub . My question is: can this be really considere ... Read moreSource: crypto.stackexchange.com

Published: 16/01/2017Imagine the following setting: a party considers a secret sharing or multiparty protocol that is secure against semihonest adversaries. The adversary selectively chooses the inputs such that it could ... Read moreSource: crypto.stackexchange.com

Published: 16/01/2017I have a what is most likely a book cipher. It looks like this 25.2.2 57.18.2 115.2.8 143.10.4 190.23.6 217.4.9 I assume the first number is the page number, the second is the line and the third is ... Read moreSource: crypto.stackexchange.com

Published: 16/01/2017could anyone please explain to me the difference between these two belonging symbols (one with R in index $\in_R$) and the other (without R in index $\in$) I have found them in a scientific paper rela ... Read moreSource: crypto.stackexchange.com

Published: 16/01/2017Let $\{ {\bf v}_1,{\bf v}_2 \}$ be two linearly independent vectors. An orthogonal base $\{{\bf u}_1,{\bf u}_2 \}$ of the vector space $\mathrm{span}\{ {\bf v}_1,{\bf v}_2 \}$ can be computed using Gr ... Read moreSource: crypto.stackexchange.com

Published: 16/01/2017This is a question that arises from an exercise you can see here on breaking a bad EKE construction with RSA. However, my question does not tackle that construction. The problem is that we work with a ... Read moreSource: crypto.stackexchange.com

Published: 16/01/2017I have a cryptographically secured RNG that uses a recommended block cipher to generate the random number. As its output, I receive the random number which is very large, but the application requires ... Read moreSource: crypto.stackexchange.com

Published: 16/01/2017My web application receives encrypted data from another server encrypted with RSA keys. Where should I store the private key (RSA) in a .NET web application (Windows)? It seems that putting in it in t ... Read moreSource: crypto.stackexchange.com

Published: 16/01/2017Goal: Deliver a message along a given routing path ABC with three nodes/steps A, B, and C. Generate a secret out of the path info and encapsulate it in the message. The path secret should be locally v ... Read moreSource: crypto.stackexchange.com

Published: 16/01/20171) A>B AB{Na}Kab 2) B>A {Na+1,Nb}Kab 3) A>B {Nb+1}Kab 4) B>A {K'ab,N'b}Kab This protocol is used to refresh a symmetric session key. EDIT: A and B are the IDs of users A and B. Na ... Read moreSource: crypto.stackexchange.com

Published: 16/01/2017The WEP secure channel works by sending $$IV(mCRC(m) \oplus RC_4(K,IV)$$ where IV is an asynchronous initial vector, K is an encryption key and CRC is a cyclic redundancy check function. I know th ... Read moreSource: crypto.stackexchange.com

Published: 16/01/2017So let's assume I want to perform Ed448 or Ed25519 digital signatures or want to perform a DH keyexchange. Assume further that those curves (Curve448 or Curve25519) are required . But the problem is, ... Read moreSource: crypto.stackexchange.com

Published: 16/01/2017The associated NTRU lattice is of dimension $d=2N$. The public and private key sizes are both of length $O(N)=O(d/2)=O(d)$. So where does the $d\log(d)$ appear? Thanks in advance. Read moreSource: crypto.stackexchange.com

Published: 15/01/2017i'm new to cryptography so i feel sorry for this newbie question! Can anyone tell me how Vigenère work with sorted order? For example i have this in my book: LADY(KEY) 3124(SORTED ORDER) 312431243(REP ... Read moreSource: crypto.stackexchange.com

Published: 15/01/2017I need some guidance on elliptic curves that support signing and key agreement. I am trying to develop a protocol for sending encrypted, deniably authenticated messages. To do this I will sign the mes ... Read moreSource: crypto.stackexchange.com

Published: 15/01/2017I mean, if I look at bitcoin. There is used a Merkle Tree and for Signature ECDSA https://en.bitcoin.it/wiki/Elliptic_Curve_Digital_Signature_Algorithm Is there an better alternative? Read moreSource: crypto.stackexchange.com

Published: 15/01/2017I am relatively new to ECC, but my understanding is that the result of a point multiplication must still be a point on the curve. I have implemented an ECC calculator in Python, to add and multiply po ... Read moreSource: crypto.stackexchange.com
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