I will admit that part of me likes to program my own implementations in
assembly language if just for the practice, especially learning where
latency and stalls happen. The problem with most of the examples given
in this chain is that they use a 'high-level' assembly language with
macros and v
> Am 17.09.2023 um 08:45 schrieb Arnaud Bouchez via fpc-devel
> :
>
>
> There is a working SHA-1 and SHA-256 implementation using x86_64 asm and also
> SHA-NI in mORMot 2.
>
> Numbers are very high, e.g. 2GB/s on my Core i5 13500.
>
> Since there is no SHA opcode in FPC asm yet (neither in
There is a working SHA-1 and SHA-256 implementation using x86_64 asm and
also SHA-NI in mORMot 2.
Numbers are very high, e.g. 2GB/s on my Core i5 13500.
Since there is no SHA opcode in FPC asm yet (neither in Delphi), I am
using hardcoded "db" arrays for SHA-NI instructions.
See
https://
True, that's fair. Just having this feature for the sake of compiling
the "hash" package more efficiently is... well... favouritism?! Or just
a feature that has a single purpose.
Kit
On 16/09/2023 17:45, Florian Klämpfl via fpc-devel wrote:
Am 16.09.2023 um 17:45 schrieb J. Gareth Moreton
> Am 16.09.2023 um 17:45 schrieb J. Gareth Moreton via fpc-devel
> :
>
> I missed this post - thanks Florian!
>
> Indeed, SHA-1 is deprecated at least as far as being a cryptographic
> algorithm is concerned, but it still has some uses in data verification in a
> similar vein to MD5. I know
> assembly version of SHA-1 for x86_64
Another example which I thought is beautiful in form and simplicity (I
don't know how it compares for performance):
https://github.com/nayuki/Nayuki-web-published-code/blob/master/fast-sha1-hash-implementation-in-x86-assembly/sha1-fast-x8664.S
___
I missed this post - thanks Florian!
Indeed, SHA-1 is deprecated at least as far as being a cryptographic
algorithm is concerned, but it still has some uses in data verification
in a similar vein to MD5. I know git uses it internally so server
branches can't be corrupted.
I have probably sp
> OpenSSL x86 64-bit assembly code
>
https://github.com/openssl/openssl/blob/master/crypto/sha/asm/sha1-x86_64.pl
To generate plain assembly from the OpenSSL perl asm script requires
downloading these files to the same folder:
https://github.com/openssl/openssl/tree/master/crypto/perlasm
_
Thanks for the resources - these will prove very useful! Intel and AMD
processors also have specialised SHA instructions later on. I know the
AMD Zen supports them - not sure the earliest Intel models though.
Currently I'm sticking with pure SSE2 since this is the latest
instruction set that
J. Gareth Moreton via fpc-devel wrote:
> So this past week I've been building on Rika's work by adding an
> assembly version of SHA-1 for x86_64 to complement Rika's i386 version.
> So far I've successfully made a version that runs twice as fast as the
> Pascal code. I hoped to go even faster by
Am 16.09.23 um 15:13 schrieb J. Gareth Moreton via fpc-devel:
Hi everyone,
So this past week I've been building on Rika's work by adding an
assembly version of SHA-1 for x86_64 to complement Rika's i386 version.
So far I've successfully made a version that runs twice as fast as the
Pascal cod
Hi everyone,
So this past week I've been building on Rika's work by adding an
assembly version of SHA-1 for x86_64 to complement Rika's i386 version.
So far I've successfully made a version that runs twice as fast as the
Pascal code. I hoped to go even faster by making use of the SSE2
instr
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