keybit | Battle royale de digitação | Game Engine library
kandi X-RAY | keybit Summary
kandi X-RAY | keybit Summary
Keybit is a browser game like battle royale mode that put 2 players or more against each other in a arena to know who type more fast, the keys will show on the screen press it more fast that you can doing it you can attack the others players and survive, the last survivor won.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of keybit
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QUESTION
I am facing the following issue while working with Java cryptography.
error decrjavax.crypto.BadPaddingException: Given final block not properly padded. Such issues can arise if a bad key is used during decryption.
I have checked all possible answers, but couldn't find the exact reason behind this.
One observation that when i use AES/CBC/NoPadding in place of AES/CBC/PKCS5Padding, i can execute it successfully.
here is my code snippet.
...ANSWER
Answered 2020-Jul-11 at 11:19Your error is the way to use your streams when encrypting:
For a CipherOutputStream it is essential to be closed at the end because only when it is closed the final padding can be written.
In your code however the cipherOutputStream instance is never closed. hence the padding is never written to the encrypted file.
Of course when decrypting the file there is no padding where a padding should be and you are getting the BadPaddingException.
Therefore you should change the encyrption to this:
QUESTION
I am currently writing a UCI chess engine. Inside my engine, I have a big transposition table which maps keys to values.
When implementing this, I had the memory already in mind and did not want to create new objects when placing something in the table so I filled the entire table with empty objects to begin with.
The code looks like this:
...ANSWER
Answered 2020-Apr-30 at 12:06Unless a huge part of your table is filled (say 80%), you should create (and delete) entries on demand to save memory. Objects in Java exist, whetherthey are referenced in an array (or other object) or not, until the time the garbage collector cleans them up, after the last non-weak reference has been cleared and the last thread loses access to the object. And even then, the garbage collector may take ages to clean the object, depending on it's setup. Above all, the JVM is reluctant to return memory, once allocated, because reallocating it tends to be expensive. However all of the above is implementation dependant.
A concrete suggestion to fill your table, write an ensureEntry method, to create an object in your table on demand, so you don't have to initialize it, on startup:
QUESTION
I'm using a TPM to generate key pairs on-the-fly and eventually I'd want to format and output the public portion of a pair to a file, so it can be used easily by third parties.
To address the TPM, I'm using the TSS.MSR C++ API
After successfully creating a RSA2048 primary key with the following template:
...ANSWER
Answered 2020-Feb-25 at 10:38This can be achieved with libraries such as Botan or OpenSSL. It is quite straight forward with Botan:
QUESTION
Help please, as you are going to be able to tell from the code I'm extremely amatur at javascript coding, I have however managed to put this together and I'm very close to getting it to function how I need with a couple of niggles I just can't iron out.
Code posted below but to replicate the problems I'm having do the following..
To replicate problem 1..
- go to https://www.keybit.co.uk/6sizecalc/stickersv2.php
- press the (show/hide calcs link at the bottom)
- enter some test numbers into the top boxes (width and height)
- (tab out of the input box) note that the number in step 10 of the calculations is wrong
- press the go button, and now note that the number in step 10 is now correct.
Why is it wrong at first??
Problem 2.. is that it's supposed to show the result of step 10 in plain text towards the top of the page but it never shows anything there at all!
The code..
...ANSWER
Answered 2019-Dec-09 at 15:43If you open the Developer Tools window in your browser and check the Console window you will see one problem:
QUESTION
I have an issue with a SecKeyRef generated on iOS device - when trying to use it on Java server, the exception is thrown:
InvalidKeyException: EC domain parameters must be encoded in the algorithm identifier
here's the code snippet from the server code:
...ANSWER
Answered 2018-Jul-19 at 14:11I solved the problem, although I'm not sure why.
What I did is I ditched CryptoExportImportManager library and I'm manually creating key data, like so:
QUESTION
case 1:
...ANSWER
Answered 2018-Apr-24 at 07:40The usual arithmetic conversions are performed on the operands of %. I am guessing that i is a signed type; the result of i % 3 may differ from the result of i % 3u.
For example, -1 % 3u is usually 0 because after conversion to unsigned int, -1 typically becomes one less than an even power of two, e.g. 65535 or 4294967295, which is always a multiple of 3.
But -1 % 3 is either -1 or 2 in C89 (it's implementation-defined which).
It stands to reason that the compiler might have to issue different assembly instructions for these two different cases.
The edit to the question doesn't change this; the uint8_t is promoted to signed int, and the optimizer might not realize that it could use the "better" assembly for both cases.
QUESTION
I have the following python code:
...ANSWER
Answered 2018-Nov-03 at 15:52Close the file;
QUESTION
I am currently working on a project to decrypt a stream of bytes coming from a smart meter using a ESP32 with the ESP-IDF toolchain. (Smart meter specification here for those interested: P1PortSpecification.pdf , chapter 2.6 page 9).
I am using a state machine to split the stream into the different parts as found in the documentation and when printing them to the terminal I get the results as expected, so I consider the input currently to be correct.
Getting to the final state of decrypting the payload I am unsure if I am using the mbedtls library right, as I can't get it to work properly. The encryption used is AES128-GCM, therefore I am using gcm.h. Here is my current function:
...ANSWER
Answered 2018-Sep-05 at 16:57Well, I found the solution to my personal problem. I used pre-recorded telegrams, which I sent over USB to the UART pin. Unfortunately the USB controller of my PC is messing up a bit here and there.
Hard coding the telegram into the code works perfectly well...
QUESTION
I have two difference html page, in the first one there is a form that on submit call a Javascript function to encrypt two different parameter after that these two parameter are sent in get to the second page, following the code of the first html page:
...
ANSWER
Answered 2018-Apr-07 at 20:00To decode a base64 string, pass the parsed object containing the word array to the stringify function for the Utf8 encoder. i.e. CryptoJS.enc.Utf8.stringify(parsedObjectContainingWordArray)
QUESTION
I'm using this programs code Programs code full and i can't figure it out why wouldn't my Triple DES work. How and what did i try?
I added 3key inputs (as well arrays for keybits) that i would use to encrypt the hex and converted them:
...
ANSWER
Answered 2017-Nov-13 at 15:27One thing that is missing is that generally 3DES encryption is ede: encrypt with the 1st key, decrypt with the 2nd key and encrypt with the 3rd key. The reverse ded for decryption.
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