lade...
random avatar

8051enthusiast - Network

Posts Subscribe

neat little fact about CRCs and stream ciphers: if you append a CRC to a message, you always get the same CRC.if you encrypt the resulting...

https://mastodon.social/@8051ent...

neat little fact about CRCs and stream ciphers: if you append a CRC to a message, you always get the same CRC.
if you encrypt the resulting message with a stream cipher, the CRC of the message is cancelled out so you essentially get the CRC of the keystream. as a result, if you encrypt 2 different files of same length with CRC appended with the same (unsalted) key, you get the same CRC on the encrypted file

8.2.2025 12:24neat little fact about CRCs and stream ciphers: if you append a CRC to a message, you always get the same CRC.if you encrypt the resulting...
https://mastodon.social/@8051ent...

Content warning:spoiler (aoc 2024 day 22)my solution for today's aoc part 1 (i precalculated everything)

https://mastodon.social/@8051ent...

Content warning:spoiler (aoc 2024 day 22)


my solution for today's aoc part 1 (i precalculated everything)

22.12.2024 13:07Content warning:spoiler (aoc 2024 day 22)my solution for today's aoc part 1 (i precalculated everything)
https://mastodon.social/@8051ent...

current status: regular wifi dropouts, except when running tcpdump on the wifi interface, in which case it works just fine

https://mastodon.social/@8051ent...

current status: regular wifi dropouts, except when running tcpdump on the wifi interface, in which case it works just fine

28.10.2024 02:10current status: regular wifi dropouts, except when running tcpdump on the wifi interface, in which case it works just fine
https://mastodon.social/@8051ent...

yay graphs

https://mastodon.social/@8051ent...

yay graphs

24.9.2024 17:46yay graphs
https://mastodon.social/@8051ent...

finally bought binary ninja, let's see how good i can bend it to 8051s pecularities

https://mastodon.social/@8051ent...

finally bought binary ninja, let's see how good i can bend it to 8051s pecularities

23.9.2024 14:10finally bought binary ninja, let's see how good i can bend it to 8051s pecularities
https://mastodon.social/@8051ent...

Content warning:explanation (spoiler)the function first gets the return address of the caller but uses it to read 3 bytes after the call...

https://mastodon.social/@8051ent...

Content warning:explanation (spoiler)


the function first gets the return address of the caller but uses it to read 3 bytes after the call instruction, which are not actually instructions but the jump target address and bank. it then pushes the original bank value and the target address, and jumps to the target address using the `ret`. the original bank is restored using a special return function which picks the remaining byte from stack

26.6.2024 17:13Content warning:explanation (spoiler)the function first gets the return address of the caller but uses it to read 3 bytes after the call...
https://mastodon.social/@8051ent...

found a function for banked function calls i haven't seen before (note how it pops before it pushes)

https://mastodon.social/@8051ent...

found a function for banked function calls i haven't seen before (note how it pops before it pushes)

26.6.2024 17:08found a function for banked function calls i haven't seen before (note how it pops before it pushes)
https://mastodon.social/@8051ent...

i got myself a new desktop PC, so I looked at the bios and of course there is 8051 firmware inside it

https://mastodon.social/@8051ent...

i got myself a new desktop PC, so I looked at the bios and of course there is 8051 firmware inside it

26.6.2024 01:39i got myself a new desktop PC, so I looked at the bios and of course there is 8051 firmware inside it
https://mastodon.social/@8051ent...

created a python script that uses delsum to find checksummed chunks in an unknown file format by looking at all checksummed regions and...

https://mastodon.social/@8051ent...

created a python script that uses delsum to find checksummed chunks in an unknown file format by looking at all checksummed regions and checking for the most common offset between the end of one checksummed region and the start of the next.
using png as an example, it finds that it uses crc-32, with a gap of 8 bytes between checksummed chunks (because of the 4 byte checksum field and the 4 byte length field)

25.4.2024 10:41created a python script that uses delsum to find checksummed chunks in an unknown file format by looking at all checksummed regions and...
https://mastodon.social/@8051ent...

(also just made another release to avoid generating the wfa2 bindings at build time so that cargo install doesn't fail if you don't...

https://mastodon.social/@8051ent...

(also just made another release to avoid generating the wfa2 bindings at build time so that cargo install doesn't fail if you don't have libclang installed)

21.4.2024 08:33(also just made another release to avoid generating the wfa2 bindings at build time so that cargo install doesn't fail if you don't...
https://mastodon.social/@8051ent...

i've released a new biodiff version, with support for the WFA2 library (which has the biwfa algorithm that does alignment with linear...

https://mastodon.social/@8051ent...

i've released a new biodiff version, with support for the WFA2 library (which has the biwfa algorithm that does alignment with linear memory usage) and a new --print option

github.com/8051Enthusiast/biod

20.4.2024 12:42i've released a new biodiff version, with support for the WFA2 library (which has the biwfa algorithm that does alignment with linear...
https://mastodon.social/@8051ent...

large language volume manager (llvm), for managing large volumes of programming languages

https://mastodon.social/@8051ent...

large language volume manager (llvm), for managing large volumes of programming languages

13.4.2024 20:56large language volume manager (llvm), for managing large volumes of programming languages
https://mastodon.social/@8051ent...

i apparently got someone to cite the name "8051Enthusiast" in a published paper

https://mastodon.social/@8051ent...

i apparently got someone to cite the name "8051Enthusiast" in a published paper

30.3.2024 01:58i apparently got someone to cite the name "8051Enthusiast" in a published paper
https://mastodon.social/@8051ent...

btw, apparently you can just mmap a whole 1tb hdd into your process

https://mastodon.social/@8051ent...

btw, apparently you can just mmap a whole 1tb hdd into your process

29.12.2023 17:44btw, apparently you can just mmap a whole 1tb hdd into your process
https://mastodon.social/@8051ent...

had some fun making a (terrible) programming language for parsing binary data and a visualizer for its output (left parses the gpt table for...

https://mastodon.social/@8051ent...

had some fun making a (terrible) programming language for parsing binary data and a visualizer for its output (left parses the gpt table for a hdd, right a fat32 partition)

29.12.2023 17:31had some fun making a (terrible) programming language for parsing binary data and a visualizer for its output (left parses the gpt table for...
https://mastodon.social/@8051ent...

might post more again, but also might not, i really do not know!

https://mastodon.social/@8051ent...

might post more again, but also might not, i really do not know!

29.12.2023 16:11might post more again, but also might not, i really do not know!
https://mastodon.social/@8051ent...
Subscribe
To add news/posts to your profile here, you must add a link to a RSS-Feed to your webfinger. One example how you can do this is to join Fediverse City.
         
Webfan Website Badge
Nutzungsbedingungen   Datenschutzerklärung  Impressum
Webfan | @Web pages | Fediverse Members