1,912 questions
1
vote
0
answers
56
views
Liquibase ValidationFailedException and Logging Error
I have two issues with Liquibase.
When deploying my war file I get the error:
15:31:25.985 [main] WARN org.hibernate.orm.deprecation -- HHH90000012: Recognized obsolete hibernate namespace http://...
2
votes
1
answer
68
views
Why/how would a Github commit patch file checksum change?
https://github.com/ruby/ruby/commit/28f3e038805a4f396f228c6884c531677c075867.patch
There's an Arch AUR package that depends on this patch, and the package specifies the expected checksum for the file. ...
1
vote
1
answer
55
views
Redshift CRC32 producing different output than MySQL
Redshift's CRC32 function returns a string:
SELECT CRC32('abc');
> 364b3fb7
while MySQL returns an integer:
SELECT CRC32('abc');
> 891568578
From AWS docs:
The CRC32 function returns an 8-...
2
votes
1
answer
67
views
Is it possible to create a TS Type that can be used for CAS registry numbers?
Is it possible to create a custom TypeScript type that can be used for CAS numbers, which is a string of three separate integers separated by a dash? There are restrictions on valid values for all ...
-1
votes
1
answer
128
views
pnet Rust Checksum Calculation
I am using the nfq and pnet library to modify packets and redirect them (to another ip and port).
Modifying Udp and tcp ports i have already figured out and packets arrive at their newly set port. ...
0
votes
0
answers
66
views
Optimizing file update detection
I’m working on a game launcher in C# that ensures a Unity game stays updated without re-downloading all of its files on every update. Each time a new version is built, I generate and upload a JSON ...
0
votes
1
answer
48
views
Jmeter oracle fusion application checksum error
I have recorded the Oracle Fusion script in JMeter and completed all the correlations. However, when posting the login, I am getting a ‘checksum format error’ in the HTTP sampler response.
Let me ...
0
votes
0
answers
14
views
How to quantify differences between data sets in SQL Server?
I'm comparing two datasets in SQL Server (tables of the same schema) using row hashing (for example, using CheckSum() or HashBytes()).
At this point, I can tell which records are identical and which ...
1
vote
0
answers
161
views
Checksum does not match on client side when downloading large files over HTTPS
I already have a Server/Client application, clients connect to the server via a token, server verifies the token and only then server proceeds to send files to the client(s).
However, when I try to ...
1
vote
1
answer
108
views
Calculating last byte in packet - reverse-engineering communication protocol for BLE device
I'm attempting to reverse-engineer the communication protocol used to send GIF images to an LED matrix connected via BLE.
It's a 20x96 LED matrix, for what it's worth, and here is the product link. It ...
0
votes
2
answers
64
views
Checksum is part of checked data, how to calculate?
I have an eprom where the checksum is the 16bit sum of the entire eprom. The problem is that correcting the checksum changes the checked data since the checksum resides within the checked data. Is ...
2
votes
1
answer
91
views
Is it possible to disable the automatic UPC checksum check in TCPDF?
I'm using TCPDF to generate a page of retail store bin tags. These tags include a 1D UPC barcode. The system has worked for years, save for one problem: manufacturers and/or distributors occasionally ...
-1
votes
1
answer
124
views
SQL CHECKSUM returns different values when queried in SSMS and VS (Dapper og Entities)
The project goal is to be able to determine which records needs updating.
Two SQL servers, each running Comp.Level 150. One has a view that returns the checksum of several parameters (Uid, DateTime, ...
0
votes
0
answers
51
views
Artifact checksum is changed after adding env variable in Azure Pipeline
In our project we publish several libraries into Azure Feed. Before we publish new library version we fetch the checksum for the latest version and compare it with the current checksum calculated by ...
0
votes
2
answers
78
views
Output each checksum with its corresponding filename to seperate lines in a text file
I'm trying to output a checksum for six hundred tif files in a directory. I want each line to show the checksum followed by its respective file name.
For example:
b1039a6f0c4295916a82833f507f5e78 ...
3
votes
0
answers
118
views
How to ensure file integrity when using pre-signed URLs for S3 uploads in Node.js?
I'm working on an application that allows users to upload files directly to AWS S3 using pre-signed URLs. I'm using the AWS SDK for JavaScript and the getSignedUrl() function to generate the pre-...
0
votes
0
answers
47
views
Mistmatching Checksums between CPP client and Cloudflare Worker
I'm trying to upload a file to cloudflare from an embedded device.
There a C++ application that generates a SHA-1 checksum before uploading the file
std::string generate_checksum(const std::string&...
2
votes
3
answers
2k
views
yarn install failing with "Integrity check failed ...", but checksums and hashes are correct
When I run yarn install on my project, I get:
$ yarn install
yarn install v1.22.22
[1/4] 🔍 Resolving packages...
[2/4] 🚚 Fetching packages...
error https://registry.yarnpkg.com/d3-color/-/d3-color-...
0
votes
2
answers
140
views
Trying to figure out serial communication checksum
I want to be able to communicate with and setup one of my appliances (a Franke Pura coffee machine) with an ESP32. Communication via RS232 works fine. I am able to sniff the protocol when a computer ...
0
votes
1
answer
73
views
What checksum is suppose to be in $packageArgs.checksum chocolateyInstall script if the msi in included in the choco package?
If the msi is included in the choco package, is $packageArgs.checksum the msi checksum? Is this checksum only required if the msi is downloaded off the internet? Does choco install use this checksum ...
0
votes
0
answers
49
views
Hot to handle Checksum Mismatch in Messages Sent from Indiko Analyzer Machine
Body:
I am currently working with an Indiko analyzer machine and encountering a consistent issue with checksum mismatches in the ASTM messages sent from the machine. I've noticed that the checksums ...
-2
votes
1
answer
74
views
How to Calculate checksum for xbee in AT mode
I do some reverse engineering with xbee transmitter in AT mode. It's transmission data are as below. Plese help me to understand how its checksum is calculated. I hope last number is the checksum, if ...
0
votes
1
answer
257
views
Is it possible to get md5 of the entire table in SQL Server? E.g., by hashbytes
We want to get the md5 checksum of the entire table to verify the consistency of data, e.g. using the hashbytes() function of SQL Server.
As an intermediate step in the proof of concept, we figured ...
0
votes
1
answer
29
views
Artifactory OSS error: Checksum input stream calculator does not support mark
I am attempting to setup artifactory in ECS using a dockerfile.
Version: Open source license 7.9.2 rev 70902900 undefined
I have it up and running, I created a generic repo through the ui.
As a test I ...
0
votes
0
answers
111
views
Aws sdk s3 to s3 copyObject checksum is null in CopyObjectResponse
When doing a s3 to s3 copy using aws sdk, I want to save the returned checksum from CopyObjectResponse, so that I can use it later to verify if file is modified or not
but checksum value returned is ...
0
votes
1
answer
46
views
PyQT5 QtSerialPort checksum prefix question
The follow configuration: Raspberry Rpi4B / Python 3.11.2 / PyQt5 5.15.9
The follow configuration: Raspberry Rpi4B / Python 3.11.2 / PyQt5 5.15.9
I have a question about how to adjust prefix checksum ...
0
votes
0
answers
100
views
Library to do crc32c hashing in React Native/Expo-go for GCS data integrity check?
I am sending some data from my react native app to store it on GCS bucket using signed url.
However, I don't want to risk writing my own implementation for crc32c hashing and making mistake. Is there ...
0
votes
1
answer
329
views
How is the directory block checksum calculated in ext4?
In ext4, each block for a directory, when using classic linear directory, ends with a 12 byte "fake" dir entry that contains the following:
UUID + inode number + inode generation + the ...
2
votes
2
answers
245
views
Computing checksum's for TCP packets from byte arrays
I asked a similar question recently but marked it as solved since I thought I found the answer when in fact my code only worked on specific cases while missing the bulk of cases. Anyways I am using ...
3
votes
1
answer
168
views
Computing TCP's checksum from byte array
I have been working at this for a while now without being able to get the correct CheckSum value. Here my method is taking in 3-byte arrays. The first containing the IPv4Header's bytes, the second ...
0
votes
0
answers
1k
views
Why is a wrong checksum TCP packet acknowledged by kernel?
I'm delevloping a backend system. I send a HTTP request to backend server, the request packets are broken into fragments since the smaller MTU settting in the intermediate gateway. And the server ...
0
votes
1
answer
510
views
Force liquibase to calculate checksum by the given parameters values
In my yaml I have a parameter structure like this:
spring:
liquibase:
parameters:
tables:
table1: table1
and a script which creates virtual tables in PostgreSQL based on a ...
1
vote
1
answer
572
views
How can I do bidirectional communication over USB with checksum for a Raspberry Pi 5 and Raspberry Pi Pico (serial, UART, other?)
I’m working on a project that involves a Raspberry Pi 5 running a Python-based GUI and an RP2040 (running MicroPython) connected to a set of I2C sensors and 32 servos controlled by two PCA9685 PWM ...
1
vote
2
answers
752
views
Why does the checksum not change after my ebpf program uses bpf_skb_store_bytes to modify the package?
I tried to add an extension header after the ipv6 message through ebpf (tc egress)
I successfully added the extension header. During the initial test, I found that the addition of the extension header ...
0
votes
1
answer
96
views
ICMPv6 Checksum Calculation With Extension(s) in the IPv6 header
I'm trying to calculate the ICMPv6 checksum, but I'm getting the wrong checksum when the IPv6 header contains extension(s). I get the correct checksum value when the IPv6 header contains no extensions....
2
votes
0
answers
113
views
Checksum beyond my skill level - but only 4 bits
I'm trying to reverse engineer an IR protocol for laser tag guns, and the documentation I have says there should only be 14 bits, except I'm getting 24 from this particular set. The manufacturer ...
0
votes
1
answer
328
views
Identifying the CRC8 Checksum
I have been trying to reverse-engineering an old device that uses an 8 bits uC . I have access to a couple of messages that the uC sends to the computer and the result of their respective checksums. I ...
-2
votes
1
answer
110
views
Same FFmpeg command produces different Matroska MKV output file checksum [closed]
The following exemplary FFmpeg command takes an MP4 file, doesn't do any re-encoding, but simply writes the output to an MKV file:
ffmpeg -i input.mp4 -c copy output.mkv
If I run the same command ...
0
votes
0
answers
39
views
How to calculate the checksum of this serial data?
I am communicating with a device via RS232 serial
this is sample data view
20 02 80 03 64 01 C7 00 B1
20 02 80 03 32 01 05 00 BD
20 02 80 03 32 01 C3 00 7B
20 02 81 07 32 01 C3 CD CC 0C 3F 00 64
...
0
votes
0
answers
62
views
Comparing the hash of a file, containing a list of hashes of multiple files instead of each file, is it good?
I am writing a Powershell script that accepts a list of files, compresses them in an archive, and then decompresses it to another path.I intend to check if the final extracted files are identical to ...
0
votes
0
answers
85
views
How to compute Smaller checksum for executable ranging from 4 to 6 bytes?
I have a executable of C++ Qt project and I want to assign a checksum to it for documentation purpose so that I add can details like
Software Version : 1.5
Checksum : 0xBd3429A
The checksum ...
0
votes
1
answer
340
views
What is the CRC32 Collision probability of All possible ASCII strings of variable length ranging from 1 to 7
I am trying to find the CRC32 collision probability among all possible ASCII strings of variable length ranging from 1 to 7. Here an ASCII character can range from ASCII 32 to ASCII 126. I tried to ...
-1
votes
1
answer
63
views
Randomize values in SQL Server using extra criteria
I need to update the Amount column with a randomized values for every row present in the above table.
However, there are a few rules that I need to meet for this:
For TransactionType = Deposit, the ...
1
vote
0
answers
624
views
Disable UDP checksum from within a C (user-space) program
I want to disabble UDP checksum for my packets.
I'm using C and I know there is a flag SO_NO_CHECK but I believe it only applies to the kernel (?). Is there any way to do it from USER SPACE?
int ...
2
votes
0
answers
430
views
How to Implement a Checksum Algorithm Based on a Written Description
I'm working on a project that is asking me to treat data coming from satellites and some frames are ended by a checksum. The ICD lists the checksum as being a "Binary 16-bit sum of data words (2 ...
-1
votes
1
answer
166
views
How does a program know I have attempted to alter a license file? [closed]
Purly an acedemic question. Truely.
I have a program that I have been asked to demo to compare to its competitor's tools, which I use frequently. When I was finished, I was farting around with the ...
0
votes
1
answer
772
views
Checksum of checksums of a local file downloaded from S3 does not match SHA-256 checksum of the remote file
Background:
I have a somewhat large file of around 2,5GB that is stored in AWS S3. I used SHA-256 as the checksum function when uploading this file:
I then proceeded to use this official AWS user ...
-1
votes
1
answer
49
views
How to obtain head.ChecksumAdjustment?
How to calculate the checksumAdjustment(ms, apple) field in the head table of a TTF file? Here is my method of calculation.
package main
import (
"encoding/binary"
"os"
)
...
0
votes
1
answer
163
views
Intelhex in Python: How to write multiple bytes at once?
I am using Intelhex in Python to calculate a checksum of my hexfile and put it into a specific address.
The checksum is 4-bytes long an somehow I am not able to write the calculated 4-bytes at a ...
0
votes
0
answers
24
views
Checksum Query - 18 Places
I am trying to extrapolate what the checksum would be where the exact same change happens in a text string.
The final two digits reduce by 18 places. Where the last two digits are 19-99 this is ...