aHash | cryptographic hashing algorithm that uses the AES hardware | Hashing library
kandi X-RAY | aHash Summary
kandi X-RAY | aHash Summary
AHash is the fastest, DOS resistant hash currently available in Rust. AHash is intended exclusively for use in in-memory hashmaps. AHash's output is of high quality but aHash is not a cryptographically secure hash.
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of aHash
aHash Key Features
aHash Examples and Code Snippets
Community Discussions
Trending Discussions on aHash
QUESTION
Wanting to store a large number of byte arrays and aim to do this with a AHashMap>
and using Cow borrow from it and only write when needed, this should also cause it to be deduplicated. However my attempts so far have been futile:
ANSWER
Answered 2021-Mar-02 at 19:25You cannot mutate string_table
while a CipherText
holds a reference to it. This is simply one of Rust's core invariants. So you cannot use Cow
. The typical ways around it are generally either:
Use indexes/keys to reference the other structure, which unfortunately I can't see a good way to do that in this scenario.
Use
Rc
s so that the ciphertexts and the table share ownership of the bytes. This does mean that the ciphertexts can stand on their own, but you can always use the table as a broker to dedup elements before using them with judicious use ofget_or_insert
.
QUESTION
When building my Rust lambda using cross
, I get this error:
ANSWER
Answered 2020-Nov-30 at 19:46Reqwest lists OpenSSL as a requirement on Linux due to it using native-tls
, which depends on openssl
. You need to install the pkg-config
and libssl-dev
packages:
QUESTION
I have a model with an ImageField, which allow an image upload from the panel admin of Django. I would like to check if the image already exists, before saving the model.
If it's the case, I would like to display a popup (or a warning on the same page) with both images, to allow users to compare images, and allow saving if it's a false positive.
For the image comparison, I'm going to use imagehash.average_hash() algorithm which gaves me good results from my tests.
So my questions are:
- How to get the file content (to compute the aHash), before the model save.
- How to display a popup or modify the modelAdmin page to allow the check of false positive.
Any help is appreciated!
...ANSWER
Answered 2020-Oct-29 at 20:18I figured out to achieve this a part of this:
admin.py
QUESTION
I have 2 image folder containing 10k and 35k images. Each image is approximately the size of (2k,2k).
I want to remove the images which are exact duplicates.
The variation in different images are just a change in some pixels.
I have tried DHashing, PHashing, AHashing but as they are lossy image hashing technique so they are giving the same hash for non-duplicate images too.
I also tried writing a code in python, which will just subtract images and the combination in which the resultant array is not zero everywhere gives those image pair to be duplicate of each other.
Buth the time for a single combination is 0.29 seconds and for total 350 million combinations is really huge.
Is there a way to do it in a faster way without flagging non-duplicate images also.
I am open to doing it in any language(C,C++), any approach(distributed computing, multithreading) which can solve my problem accurately.
Apologies if I added some of the irrelevant approaches as I am not from computer science background.
Below is the code I used for python approach -
ANSWER
Answered 2020-Jul-31 at 16:45You should find the answer on how to delete duplicate files (not only images). Then you can use, for example, fdupes
or find some alternative SW: https://alternativeto.net/software/fdupes/
QUESTION
When building files in an environment that blocks outbound http requests, I get an error like:
Updating dependencies (including require-dev)
The "http://packagist.org/p/provider-2013%ahash.json" file could not be downloaded: failed to open stream: Connection timed out
http://packagist.org could not be fully loaded, package information was loaded from the local cache and may be out of date
Is there some way to instruct composer to use https connection to packagist?
I've experienced the issue with both 1.2.0 and 1.6.5 versions of composer.
...ANSWER
Answered 2019-Dec-21 at 19:41You can either force composer to use https by:
QUESTION
Ok, I'll try to explain you what I'm trying to get with a minimum viable example: I'd like to have a struct like this:
...ANSWER
Answered 2019-Dec-11 at 17:59try this way
QUESTION
I try to ensure the accuracy of some (free) java cpu profiling tools, e.g. sjk, visualvm.
Here is a sample program to do cpu-sensitive task:
RandomStringUtils.java
:
ANSWER
Answered 2019-Mar-11 at 09:46This is a very striking example of safepoint bias.
Below 3 flame graphs for slightly modified version of your code (see on github).
SJK is using thread dump sampling aproach so result is skewed by safepoint bias.
JFR is not affected by safepoint bias at sampling, but symbol map generated by JIT compiler is limited to safepoint checks by default. This has negative effect for reconstructing stack traces.
While results better than thread dump sampling, you can see anomalies. E.g. Integer.toHexString
time is definitely exaggerated.
Using Java Flight Recorder and additional JVM options
QUESTION
This from https://stackoverflow.com/a/54314490/10082400 can show only the hash IDs of selected commits
...ANSWER
Answered 2019-Jan-29 at 15:22You can use the --all
option to rev-list
:
QUESTION
I have a Room database, containing a list of members. There are different members in a list. I want to click on a specific member and then it should start a new activity where I can see additional information about that member. But when I click on a member, the app crashes.
Code of my adapter:
...ANSWER
Answered 2018-Jun-13 at 20:35Your private List mMember
in your main activity is not initialized when you acess it (most likely in the listener).
You could make it private List mMember = new ArrayList
instead and have at least an empty list.
As an alternative, you could insert mMember = new ArrayList();
somewhere before mMemberViewModel.getAllMember().observe(this, new Observer>()
in onCreate()
.
QUESTION
Data.Cloud.CloudAPI.pas
has class function TCloudSHA256Authentication.GetStreamToHashSHA256Hex(const Content: TStream): string;
that return wrong SHA 256 on some file.
ANSWER
Answered 2017-Apr-20 at 20:35I just tested a +1.5 GB file using MS Cyrpto and THashSHA2 on Berlin, they both returned the same hash but MS Crypto like OpenSSL is much faster.
The problem is that the file is too large to hold in TBytes in one chunk.
My record helper has TBytes.MaxLen = $F000; {61440}
so you need to use a TFileStream and read the file in chunks into HashSHA2.Update instead.
Update: As per David Heffernan's comment I retested TBytes.MaxLen and it appears to be only limited by available memory.
Practical Example and Speed comparison between MS Crypto and Delphi HashSha2
Note: Requires Jedi API
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install aHash
Rust is installed and managed by the rustup tool. Rust has a 6-week rapid release process and supports a great number of platforms, so there are many builds of Rust available at any time. Please refer rust-lang.org for more information.
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page