# All Questions

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42 views

### 2019: a year in moderation

It's New Year's Day in Stack Exchange land... A distinguishing characteristic of these sites is how they are moderated: We designed the Stack Exchange network engine to be mostly self-regulating, ...
2k views

### I'm leaving Crypto.SE indefinitely

I'm leaving Crypto.SE indefinitely. (Also the rest of Stack Exchange, but I'm at best a supporting actor in any other scene on this stage.) I've temporarily withdrawn from SE addiction before. This ...
25 views

### Math formatting: Overalapping with side bar

This formatting of this answer seems to overlap with the right sidebar: Is anyone aware how can this be fixed (by, say, forcing MathJax to create a new line) automatically?
69 views

### Were those two questions about circular security really duplicates?

The question Does encrypting the key with itself make it easier to crack the ciphertext? was closed/merged with the question Encrypting a key with the same key using AES. However, I do not see a ...
20 views

### About the tags hardness-assumption and hard-problem [duplicate]

Could you explain me the difference between these two tags with one example please?
208 views

### Should we allow generic questions about block chain?

You may or may not have noticed that BitCoin.SE and Ethereum.SE have narrowed their scope. Nowadays that means that they only accept questions that are about their specific crypto currency and block ...
39 views

### Tag purpose: quantum-cryptography

There are currently 98 questions tagged quantum-cryptography. These largely fall into five categories: quantum key distribution, which is the only topic mentioned in the quantum-cryptography tag ...
51 views

### Should we edit names and acronyms that are not spelled correctly?

There are many instances where names and acronyms are not spelled right, or where dashes are missing or even introduced. Should we correct them? Examples: Different spellings of ElGamal Spelling of ...
59 views

### Is it appropriate or not to post open letter to standardization organizations here on meta or the main site?

I just sent an email to NIST commenting and enquiring about NIST-SP-800-90Ar1. The email has 3 parts: 1) option proliferation, 2) deriving seedlen for DRBGs based on hash functions, and 3) ...
196 views

### Congratulations to poncho for earning over 100,000 reputation points!

crypto.se has recently acquired our first 100k rep user! The user poncho has recently passed the 100k reputation marker. This is the first time this has ever happened on our site and as such is a ...
55 views

### Do we need rfc7748 tag?

The rfc7748 tag currently has 2 questions with 0 watchers. Do we really need this tag?
48 views

### Chat appears down

It appears Chat is down:
28 views

### Do we need SP800 tag

sp800 tag has only 3 questions with no watcher. Do we really need this tag? There is already nist with 117 questions and 4 watchers.
17 views

### Tag purpose: optimization

The optimization was created in only in July of this year and has no usage guidance or tag wiki. It has seven questions, most of which are about the colloquial use of the term ‘optimization’ to mean ‘...
34 views

### Tag purpose: attack

Cryptography is all about defending against attacks by intelligent adversaries. What purpose does the attack tag serve that is not served by the mere use of Crypto.SE as a medium in the first place? ...
26 views

### Tag purpose: forgery

There are 45 questions tagged forgery; nearly all of them are also tagged either mac, signature, or authenticated-encryption, or tagged with a specific scheme like elgamal-signature—see search for ...
158 views

Our current homework policy—for homework questions that demonstrate effort and are not simply copypasta of the exercise—is to leave hints in comments, not in answers. This means that we can't mark ...
55 views

### If I'm searching pictures to illustrate some crypto primitives? Can I ask it on th SE?

For example, a good picture to illustrate ZK proofs. Should I ask on the SE? Or in the Meta-SE?
35 views

### Do we need separate GHASH, GCM, and AES-GCM tags?

GHASH is used essentially only in AES-GCM. The ghash tag was introduced in late 2018 and applies to only five questions all asked within the span of one week. In contrast, there are over seventy ...
195 views

### Should we accept edits by non-authors to put Wikipedia links on phrases?

We have had a number of edits recently that just put Wikipedia links on phrases, in posts that the editor was not the author of. Is this a desirable practice? For example, in https://crypto....
41 views

### Why do we have a trust tag?

The trust tag appears to have been introduced in the past two months and has now been applied to three questions with no common theme that I can discern besides the use of the word ‘trust’: Do people ...
42 views

### Should hard-problem be made a synonym of hardness-assumption?

Should the tags hard-problem and hardness-assumption be merged or be made synonyms of each other? They are both used for the exact same things (cryptographic hardness assumptions).
28 views

### Should keys-size be renamed to key-size?

We have the key-size tag its synonym, key-length. However, there is another tag with a non-negligible number of uses called keys-size. Notice the extraneous s. Should this be renamed to key-size?
69 views

### How is the quantum-resistance tag different from the post-quantum-cryptography tag?

The prior thread on Quantum tag reform did not discuss quantum-resistance, and there are many more questions tagged post-quantum-cryptography. The dominant nomenclature seems to be post-quantum, not ...
25 views

### Is it possible to retrieve “favourite” questions?

If I put a star on a question, could I retrieve it easily?
51 views

### My question or answer was denied

Is my pseudorandom generator difficult to guess the next output? My ask was hold on. Why did my ask hold on? I do not know what I do. Should I ask someone else to translate? If so, who should I ask? ...
42 views

### The Pedagogy of Cryptography is not always a Relevant Topic for this Website?

A properly-tagged, significant, and seemingly relevant post--Structure for an introductory course on cryptography?--has been locked as something of historical significance with the explanation that ".....
94 views

### Introduce “secp256k1” tag?

Currently, there is no tag for "secp256k1". Given how important Bitcoin has become, it might be time to have such a tag. Doing so would make it easier for users to find and answer secp256k1-related ...
118 views

### There is no catch-all off-topic close reason

Most sites have an off-topic close reason stating that the question is not on-topic according to the help center, as a catch-all when the more common specific close reasons aren't relevant. We used to ...
33 views

### Is cryptosystem recommendation on-topic?

I'm writing some code that needs to run with as small a footprint as possible, because it's on an embedded device. I want to encrypt its communications. I'm trying to find a good, resource-unintensive ...
38 views

### Is it ok to repost my question on another SE site?

Recently I've submitted two questions (see 1 and 2) that are directly related to cryptography, but their understanding is based on maths. I'm afraid that my questions don't receive enough attention ...
45 views

### one of my question was deleted

on Sep 28 '18 this question was removed (Which branches of mathematics are most important to understand cryptography?) without any reason, notification, there was not even an email that clarifies why ...
43 views

### Introduce “competition” tag

We currently have no competition tag. We however do have a SHA-3-competition tag. Should we introduce a "competition" tag and then convert the SHA-3-competition tags to that tag (together of course ...
284 views

### How to Promote Crypto.SE at Crypto Conferences?

Currently (20th - 23rd May 2019) EUROCRYPT 2019 is on-going. It has been confirmed that at least 4 of our more well-known members are there as well as several hundred other participants. Many of whom ...
43 views

### How to deal with my unanswered questions?

There are few questions i asked but did not get answers, what is the best procedure to deal with it ? re-posting , re-editing , etc .
148 views

### Are we allowed to illustrate questions about cryptographic algorithms with executable code?

According to @Maeher, we are not allowed to illustrate questions on crypto.stackexchange.com with executable code—such questions are permissible only on stackoverflow.com: https://chat.stackexchange....
69 views

### inappropriate migrations of crypto questions to stackoverflow

Consider this question: https://stackoverflow.com/questions/56186844/generating-hchacha20-internal-state-with-existant-chacha20-implementation How is that question off topic when reusing blowfish ...
161 views

### Is it OK to ask which cryptographic technique has been used?

My question has been put on hold and I would like to understand exactly why and how I can make it better. I have a software engineering background but cryptography is way out of my league, so I ...
34 views

### Backticks showing in fenced code

You can now use backticks for code on StackExchange, e.g. this is code between fences! ... which is just ... ...
29 views

### Should we change our response to questions asking for recommendations?

Every once in a while (new) users ask for recommendations for learning about cryptography, i.e. this question. These recommendations include: Literature Books Articles PDF Exercises Webpages ...
35 views

### What to do with non-specific questions about a specific crypto subject?

This recent question RSA-OAEP Padding scheme is about a specific crypto subject, but does not ask for something specific beyond "suggestions", making it borderline off-topic. I suggested reading an ...
38 views

### Should we merge [hybrid] and [hybrid-encryption]?

I just noticed that we the following pair of seemingly duplicate tags: hybrid currently has 20 questions, and a tag wiki that says: Something of mixed origin. In cryptography, typically a cipher ...
76 views

### New HNQ update: What kind of questions do set a good example for our site?

As requested, this is the sister thread to New HNQ update: What kind of questions don't set a good example for our site?. See the linked post for context. HNQ is the acronym for Hot Network Questions,...
223 views

### New HNQ update: What kind of questions don't set a good example for our site?

Hot Network Questions update There was recently an update to the Hot Network Question feature announced on meta.stackexchange. The following section appears in that post (emphasis mine): ...
249 views

### Is a two word answer to a complex question really acceptable?

Recently, I flagged a two word answer from 2015. OP was asking how we know a cryptographic primitive is secure, and the answer contained exactly two words. In fact, the answer was so short that hidden ...
69 views

### Do you know a good forum/site to send in your hand cipher

Is there any forum or website on the internet except reddit subs where you can send in your hand cipher to get it analyzed?
31 views

### Fixing possible errors in a question

This question and that near duplicate ask tree hashing/signing of JSON. They come with JSON examples that are plausible deviations from the standardized syntax (quoting character omitted or changed, ...
64 views

### Change the correct link for the $\LaTeX$ reference in our help center as well

According to this answer on the feature request "The MathJax help link should point to a more specific guide" we can change the link for our $\LaTeX$ help >>> here <<< to a site specific one. ...
### Change the link for the $\LaTeX$ reference in our help center
According to this answer on the feature request "The MathJax help link should point to a more specific guide" we can change the link for our $\LaTeX$ help here to a site specific one. This is the ...