Questions tagged [checksum]
A checksum or hash sum is a fixed-size datum computed from an arbitrary block of digital data for the purpose of detecting accidental errors that may have been introduced during its transmission or storage. The integrity of the data can be checked at any later time by recomputing the checksum and comparing it with the stored one.
checksum
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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 ...
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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 ...
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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 ...
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About checksum calculation in bank treminal transaction protocol TITP
We are implementing a bank treminal transaction protocol TITP on POS device to directly card processing server.
TITP stand for Tranzware Iso Terminal Protocol. And our connection is raw socket.
From ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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Trouble with hashdeep, fed by find, and unusual characters
I'm using hashdeep to calculate checksums, recursively for files. However, I need to exclude certain directories and so the solution would seem to be to use find to feed a file list to hashdeep. This ...
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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 ...
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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 ...
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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 ...
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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....
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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 ...
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