sha1, sha256 or md5 for 8 bit atari?

[prysm1]

Hi all

 

anybody know of or has written a utility that can calculate the hash of files on the atari?

 

regards

prsym1

[Wrathchild]

you mean natively? a quick search shows

https://github.com/laubzega/md5_6502

https://github.com/hobnobber/cc65sha1

https://github.com/hobnobber/cc65sha256

https://gitlab.com/aaron-baugher/6502-assembly-language-programming/-/blob/master/sha256.a

[prysm1]

yup natively. the once from hobnobber's github seems to be what i need. thanks

[+DrVenkman]

If you’re planning to do serious crypto work with an A8, better be patient. (Or alternately, do it in Altirra in turbo mode).

[tebe]

https://github.com/tebe6502/Mad-Pascal/blob/master/lib/md5.pas

 

https://github.com/tebe6502/Mad-Pascal/blob/master/samples/a8/bench/md5_bench.pas

[Rybags]

For file verification it's probably overkill - even CRC32 is way more than we'd need.

[drac030]

Quote

Speed-optimized MD5 hashing for MOS6502.

 

Just as the title says. I tried to strike a balance between code size and performance, which resulted in around 2KB of code and around 1750 bytes/s when hashing on a Commodore 64.

 

MD5.COM to be found on SDX Toolkit collection hashes 25040 bytes (the first file I grabbed as an example) in 6.94 sec (8.38 including loading from HDD), which gives about 3600 bytes/s. Sure, Atari is faster, but not twice as fast

 

 

Edited December 2, 2021 by drac030