bls | A simple Python implementation of threshold BLS signatures | Cryptography library
kandi X-RAY | bls Summary
kandi X-RAY | bls Summary
A simple Python implementation of threshold BLS signatures. A link to the full paper is available at the following address:
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- Generate a symmetric keypair pair .
- Aggregate a set of VKs .
- r Aggregate a set of parameters .
- Calculates the signature of the given parameters .
- Verify the signature of the parameters .
- Set up the group .
- Compute a lagrange basis .
- sum of a list
- Computes the sha256 hash of a list of elements .
- Evaluate a polynomial .
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Community Discussions
Trending Discussions on bls
QUESTION
This ANTLR4 parser grammar errors a 'no viable alternative' error when I try to parse an input. The only rules I know of that matches the part of the input with the error are the rules 'retblock_expr' and 'block_expr'. I have put 'retblock_expr' infront of 'block_expr' and put 'non_assign_expr' infront of 'retblock_expr' but it still throws the error.
input:
print(do { return a[3] })
full error:
line 1:11 no viable alternative at input '(do { return'
parser grammar:
...ANSWER
Answered 2021-Mar-27 at 14:13Your PRINT token can only be matched by the blk_expr rule through this path:
There is no path for retblock_expr to recognize anything that begins with the PRINT token.
As a result, it will not matter which order you have elk_expr or retblock_expr.
There is no parser rule in your grammar that will match a PRINT token followed by a LPR token. a block_expr is matched by the program rule, and it only matches (ignoring wsp) block_expr or retblock_expr. Neither of these have alternatives that begin with an LPR token, so ANTLR can't match that token.
print(...) would normally be matched as a function call expression that accepts 0 or more comma-separated parameters. You have no sure rule/alternative defined. (I'd guess that it should be an alternative on either retblock_expr or block_expr
That's the immediate cause of this error. ANTLR really does not have any rule/alternative that can accept a LPR token in this position.
QUESTION
I want to make SpaCy model that will recognise organisation names. Each organisation name have between 1 and 4 words, that can be titled or capitalised. I have added more than 3500 names of the organisations like this:
...ANSWER
Answered 2021-Mar-27 at 12:47You're not adding the EntityRuler correctly. You're creating an EntityRuler from scratch and adding rules to it, and then telling the pipeline to create an EntityRuler that's completely unrelated.
This is the problem code:
QUESTION
When I run my grammar (lexer and parser) in powershell, it produces these errors:
...ANSWER
Answered 2021-Mar-23 at 10:50Both global and a are listed in your grammer under kwr rule.
kwr is mentioned in the inl rule which isn't used anywhere. So your parser don't know how to deal with inl and don't know what to do with two inl chained together (global a)
QUESTION
I am trying to extract individual counties as a dataframe from a list (which consists of data from all the counties) as separate data frames in R. My code is as below and for the sake of illustration, I am breaking into step 1 (extract data from URL to a list - this part works well) and step 2 (extract individual data.frames from list - this is not working well and gives an individual list with only the last list item)
...ANSWER
Answered 2021-Mar-01 at 04:20You have list of dataframes in qcew_q1 and it is almost always better to keep them as such if you want to perform any further analysis on it. It is easier to manage and does not pollute the global environment. Maybe to clarify which dataframe is from which county you can assign them names.
QUESTION
I am trying to create a page with L-shaped grids. I got the layout down by creating 2 x 2 grids and each grid uses a 0 width div as a spacer to push another floated div to void out the space where I don't want text to appear. I am having a problem now trying to be able to scroll the text and adjust the position of the floated void div by adjusting the height of the spacer div.
...ANSWER
Answered 2021-Jan-31 at 04:43I found to resolve the bugs I was having I had to change the width of the spacer divs from
QUESTION
I want to use herumi / bls library in my application. I've successfully compiled libraries following his documentation and get a file armeabi-v7a/libbls384_256.a.
As I guess this is not the same with *.so library and I cannot use this library directly in JNI. I guess instead of this I have to create my own native code to import libbls384_256.a. Is it correct way?
There is no problem to use my own C++ code in my project and this part is already pretty described in different manuals. But I have no idea how to import libbls384_256.a to my native code using Android Studio, Gradle and JNI.
How to include *.a library in native code in Android?
ANSWER
Answered 2020-Nov-20 at 13:48Like you say, you should write a shared library that links against the prebuilt static library. The shared library should contain the exported functions that you want to call from Java, and these can in turn call functions in the static library.
If you're using nkdBuild you'd use the PREBUILT_STATIC_LIBRARY rule, and then add the library to the LOCAL_STATIC_LIBRARIES for your shared library. See https://developer.android.com/ndk/guides/prebuilts
If you're using CMake you'd do something like:
QUESTION
I am trying to play my sound only once when my mouse is over the the green button but it doesn't seem to work — plays repeatedly.
...ANSWER
Answered 2020-Jul-25 at 16:31It is difficult to answer without any more context, but my best guess is that this code is located in a loop.
This would mean that every time the loop runs, the variable mouseisover is assigned the value True, discarding the previous value.
Assuming this is your case you want to initialize your variable outside of the loop.
what your code looks like right now
QUESTION
I have a DataFrame of data from BLS that has columns corresponding to series_id, year, period, and value. The series_id for each entry is 20 characters in length, and the last two characters correspond to the type of measure (i.e. 01: All Employees, In Thousands, 26: All Employees, 3-month average change). Is there anyway to split the DataFrame into one with multiple columns (All Employees, All Employees, 3-month average change, etc.)? There are a total of 9 measures that I would want to split and there is no pattern to how often they switch to a different measure so I can't split the DataFrame every 100 entries or whatever the number would be.
The url for the data is: https://download.bls.gov/pub/time.series/sm/sm.data.0.Current
What the data looks like:
What I want the data to look like:
...ANSWER
Answered 2020-Jul-10 at 17:57In case you are still looking for a solution. Taking ansev's suggestion to use a pivot table:
QUESTION
I am trying to pull the IncPubKey JSON data from "0", but I'm getting a SyntaxError. In postman, part of the returned data looks like this:
ANSWER
Answered 2020-Jul-02 at 17:29You can't use a number as a key in "dot" notation, instead use array style notation:
QUESTION
I've been struggling with a topic related to IRQ (interrupts itself); i'm using an old MC68HC11
Been practicing for a while; i decided to move on and check the hardest exercises showed in this chapter that's why i found an interesting one (and a little tricky tbh)
Take a look at this:
This is what i tried so far (This is just an outline):
...Do NOTE:
FLAGNMI means XIRQ
FLAGIQR means IRQ
ANSWER
Answered 2020-Jun-30 at 23:21OK, here it is, TOTALLY UNTESTED but should give you the idea!
Assumptions: IRQ input is debounced, IRQ is edge triggered (so it won't repeat for the same key press), and XIRQ pulse will be shorter than the time it takes to execute the corresponding handler to avoid counting the same money twice or more.
Like I said in the comment, the design is somewhat flawed as given, but if we ignore this and assume corner cases won't happen, here's one possibility:
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