Top "Checksum" questions

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.

Checksum on string

Is there a way to calculate a checksum on a string in Linux? The checksum commands that I have seen (…

linux bash checksum
checksum remote file

Is there a way to get a program I can run via the command line that would do a checksum …

linux command-line curl terminal checksum
When generating a SHA256 / 512 hash, is there a minimum 'safe' amount of data to hash?

I have heard that when creating a hash, it's possible that if small files or amounts of data are used, …

hash checksum sha
Verify Android apk has not been repackaged?

Looking to improved the security of my Android app to flag if the .apk has been extracted, modified, repacked and …

android security checksum
Good choice for a lightweight checksum algorithm?

I find myself needing to generate a checksum for a string of data, for consistency purposes. The broad idea is …

java javascript hash checksum
Turn off Source Checksum Check Yocto

Where do I specify BB_STRICT_CHECKSUM = "0" in Yocto to disable checksum check of source code? I get: ERROR: No …

linux checksum yocto
CRC16 checksum: HCS08 vs. Kermit vs. XMODEM

I'm trying to add CRC16 error detection to a Motorola HCS08 microcontroller application. My checksums don't match, though. One online …

microcontroller checksum crc crc16
How could I guess a checksum algorithm?

Let's assume that I have some packets with a 16-bit checksum at the end. I would like to guess which …

checksum crc
Generating Luhn Checksums

There are lots of implementations for validating Luhn checksums but very few for generating them. I've come across this one …

php algorithm checksum check-digit luhn
A quick string checksum function in Perl generating values in the 0..2^32-1 range

I'm looking for a Perl string checksum function with the following properties: Input: Unicode string of undefined length ($string) Output: …

perl string checksum cpan hashcode