hashes | normal hash , consist hash | Hashing library

 by   Yikun Python Version: Current License: No License

kandi X-RAY | hashes Summary

kandi X-RAY | hashes Summary

hashes is a Python library typically used in Security, Hashing applications. hashes has no bugs, it has no vulnerabilities and it has low support. However hashes build file is not available. You can download it from GitHub.

Some code about normal hash, consist hash(normal, virtual node, partition). You can find more detailed information in post 一致性哈希算法的理解与实践.
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            kandi-support Support

              hashes has a low active ecosystem.
              It has 55 star(s) with 30 fork(s). There are 4 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 2 open issues and 0 have been closed. On average issues are closed in 703 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of hashes is current.

            kandi-Quality Quality

              hashes has 0 bugs and 0 code smells.

            kandi-Security Security

              hashes has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              hashes code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              hashes does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              OutlinedDot
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              hashes releases are not available. You will need to build from source code and install.
              hashes has no build file. You will be need to create the build yourself to build the component from source.
              hashes saves you 82 person hours of effort in developing the same functionality from scratch.
              It has 210 lines of code, 6 functions and 8 files.
              It has low code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed hashes and discovered the below as its top functions. This is intended to give you an instant insight into hashes implemented functionality, and help decide if they suit your requirements.
            • Compute the hash of a value .
            Get all kandi verified functions for this library.

            hashes Key Features

            No Key Features are available at this moment for hashes.

            hashes Examples and Code Snippets

            No Code Snippets are available at this moment for hashes.

            Community Discussions

            QUESTION

            I need to repeat this hash function x amount of times but I'm a bit lost now
            Asked 2021-Jun-14 at 20:20

            I am trying to make a script that starts with a secret, then hashes it, and hashes that, written in Javascript w/Node. I need to repeat that process 5 million times. The basis for the code is simple but the execution is what's slowing me down. This is what I have so far.

            ...

            ANSWER

            Answered 2021-Jun-14 at 20:20

            Here's an iterative solution which will continue feeding results of hash back into sha256 5 million times.

            Source https://stackoverflow.com/questions/67973656

            QUESTION

            Web cryptography implement HKDF for the output of ECDH
            Asked 2021-Jun-13 at 11:02

            I want implement a elliptic curve diffie hellman using HKDF as key derivation function. I am using a python backend and (vanilla) javascript in frontend. I am using python cryptography library in backend and Web Crypto api in frontend as cryptographic library. I created ECDH key pair in both side and exchanged the pbulic keys. Now I am trying to create the AES shared key with the exchanged public key and private key along with HKDF algorithm. I am able to do it in the python backend (I followed this example for the python code):

            ...

            ANSWER

            Answered 2021-Jun-13 at 11:02

            The referenced Python code uses P-384 (aka secp384r1) as elliptic curve. This is compatible with the WebCrypto API, which supports three curves P-256 (aka secp256r1), P-384 and P-521 (aka secp521r1), see EcKeyImportParams.

            The following WebCrypto code generates a shared secret using ECDH and derives an AES key from the shared secret using HKDF. In detail the following happens:

            • To allow comparison of the derived key with that of the referenced Python code, predefined EC keys are applied. The private key is imported as PKCS#8, the public key as X.509/SPKI. Note that due to a Firefox bug concerning the import of EC keys, the script below cannot be run in the Firefox browser.
            • After the import the shared secret is created with ECDH using deriveBits() (and not deriveKey()).
            • The shared secret is imported with importKey() and then the AES key is derived using HKDF, again with deriveBits().

            Source https://stackoverflow.com/questions/67938461

            QUESTION

            Perl not selecting defined value with "||" in subroutines or hashes
            Asked 2021-Jun-11 at 16:22

            I'm running a simple script that will assign a variable to one value if a value is defined, most simply:

            ...

            ANSWER

            Answered 2021-Jun-11 at 16:22

            || is the or operator. It examines the left-hand-side for truthiness, not for definedness. For a binary operator that tests definedness, you want // (available since Perl v5.10).

            More in perlop

            Source https://stackoverflow.com/questions/67940398

            QUESTION

            is redisJSON better than plain redis when keeping data for boardgame session data?
            Asked 2021-Jun-11 at 10:05

            Just loaded up a redis server for my backend with ioredis.

            I'm learning that if i want to store data in json spec, i gotta use the redisJSON module instead. Since hashes are only string typed and they are flat. However, if im only storing one object per user instance, containing less than 10 fields that are typed string/num or array.. is it better to just use without redisJSON? On one hand, redisJSON can let me query an object on one query. On the other, i can just store multiple datatypes and query between those sets/hash with a consistent naming convention.

            Does anyone know whats the better usage or pitfalls with either approach?

            the backend serves a websocket for a multiplayer boardgame.

            ...

            ANSWER

            Answered 2021-Jun-11 at 10:05

            The answer is it depends and it requires several trade-offs to be made for each project

            • Performance: RedisJSON uses a tree structure for storing all elements in a document.
              • Comparing to a string: the advantage is that updating sub-elements of a document will be faster than manipulating a string containing a serialised JSON object. But retrieving (reassembling) and writing the entire document will be more expensive compared to Strings. Read more here.
              • Comparing to Hash: when manipulating a flat document (1 level deep), RedisJSON and HSET performance are comparable.
            • Maintainability: using several native data types in Redis to represent your object can be really performing, but the code will be more complex to maintain. There can be additional migration/refactoring work when the structure of the document is altered.
            • Querying: RediSearch will soon add support for indexing and querying the content RedisJSON documents. This is, of course, if your use case requires secondary indexing and querying documents other than with their key. You can still build your own secondary indexing with Redis data structures, but this is also a trade-off in maintainability

            disclaimer: I work for RedisLabs, creator and maintainer of RediSearch and RedisJSON

            Source https://stackoverflow.com/questions/67929784

            QUESTION

            Adding to beginning of string with regex
            Asked 2021-Jun-10 at 20:42

            So I'm trying to add two hashes to all strings that begin with a letter following a dot.

            It should apply only if it is the beginning of the string. I'm new to regex, so I'm not sure how I should do the adding. Any help?

            ...

            ANSWER

            Answered 2021-Jun-10 at 20:42

            QUESTION

            Which encryption password does cryptography.fernet uses?
            Asked 2021-Jun-10 at 19:40

            I am making a program which encrypts and decrypts texts. I am using Python 3.7 and cryptography.fernet library. I want to enter some information about my program's encryption standard to the GitHub page but I didn't understand which encryption does Fernet uses.

            Here is my sample code which I am used in my project. I want to encrypt with 256-bit (AES-256) key but the key which this code generates is longer than 32 characters. It's 44 characters. But in official web site of cryptography library it says this code generates 128-bit key. What is the name of this 44 character (352-bit) key? Or is there any way for 256-bit symmetric encryption without PyCrypto?

            ...

            ANSWER

            Answered 2021-May-03 at 13:26

            It is well written in the documentation;

            Implementation

            Fernet is built on top of a number of standard cryptographic primitives. Specifically it uses:

            • AES in CBC mode with a 128-bit key for encryption; using PKCS7 padding.
            • HMAC using SHA256 for authentication.
            • Initialization vectors are generated using os.urandom().

            For complete details consult the specification.

            Therefore you cannot use AES-256 with Fernet

            • Cryptography.io library has other modes too, in the hazardous material layer including CBC, CTR, and GCM for AES-256, too.

            PyCrypto can use a wide range of mode of operations for AES-256 including CBC, CTR, GCM, SIV, and OCB

            Not clear how you get 44 bytes, here is the way to get the 32-bytes;

            Source https://stackoverflow.com/questions/67365604

            QUESTION

            Review Board - Post separate commits, ignoring pull commits
            Asked 2021-Jun-10 at 14:10

            I have 3 commits: C1, C2, C3. They have 3 hashes: #C1, #C2, #C3. I submitted C1, and C3. C2 I received when I did 'git pull'. I want to post commits C1 and C3. As far as I can tell I can't do this in Review Board, but hopefully I am wrong.

            Normally to post multiple commits, you have to post all inbetween. For example:

            ...

            ANSWER

            Answered 2021-Jun-08 at 17:56

            AFAIK.. Reviewboard doestn't just display/highlight "uploaded diffs". It needs a local (back-end) repo, and displays the changes as diffs against this repo. As such, it needs to have in its local repo the base commit that you're diffing against. You can post C1..C3 because the back-end repo has C1's parent C0. But you can't post C2 or C3 on their own because RB does not have their parent in its db.

            Source https://stackoverflow.com/questions/67891602

            QUESTION

            How to add hash value inside the hash and that contain in array in Ruby?
            Asked 2021-Jun-09 at 11:59

            So I have an array that contain multiple hashes like:

            [{"name"=>"a", "agg_value"=>"75.000000"}, {"name"=>"b", "agg_value"=>"25.000000"}, {"name"=>"a", "agg_value"=>"75.01000"}]

            I want to convert this like following using ruby:

            [{"name"=>"a", "agg_value"=>"150.000000"}, {"name"=>"b", "agg_value"=>"25.000000"}]

            ...

            ANSWER

            Answered 2021-Jun-09 at 11:59

            If the decimal aren't important, you could try something like that:

            Source https://stackoverflow.com/questions/67903452

            QUESTION

            Rails transform_values just one key[value]
            Asked 2021-Jun-09 at 05:18

            I've got below hash of hashes

            ...

            ANSWER

            Answered 2021-Jun-09 at 05:18

            something like this will replace: "answer"=>"0" with "answer"=>"Yes" and return updated answers hash

            Source https://stackoverflow.com/questions/67737581

            QUESTION

            Python3 os.urandom() for password salts
            Asked 2021-Jun-07 at 23:14

            I want to generate a password salt with os.urandom(). And then create a hash with:

            ...

            ANSWER

            Answered 2021-Jun-07 at 22:51

            Use .hex() on a bytes object to get a str value suitable for a CSV, and .fromhex() on that str to get bytes again:

            Source https://stackoverflow.com/questions/67878654

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install hashes

            You can download it from GitHub.
            You can use hashes like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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          • CLI

            gh repo clone Yikun/hashes

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            git@github.com:Yikun/hashes.git

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