mikerabat

23 minutes ago, David Heffernan said:

TEncoding.UTF8.GetBytes

Sorry but can you elaborate that? I actually cannot see how I get there a string converted to a field in the record...

what am I missing here?

4 minutes ago, David Heffernan said:

TEncoding.UTF8.GetBytes

 

 

You don't need to use AnsiString.

You mean I don't need AnsiCharacters to communicate with a device that only understands Single Byte characters?

So... how is that?

And tell me then how to use GetBytes to fill a structure like:

type

  TPatData = packed record

     SurName : Array[0..31] of AnsiChar;

     FirstName : Array[0..31] of AnsiChar;

  end;

var pat : TPatData;

      formSurName : String;

begin

        FillChar(pat, sizeof(pat), 0);

       // code to be filled here....

end;

16 hours ago, Stefan Glienke said:

Yes, ditch AnsiString.

haha...

I'd love to but I have file and communication structures that need good old ansi strings.

Or do you actually have a better idea than:
str8 := UTF8String(SurName);
System.AnsiStrings.StrLCopy(@patData.surname[0],PAnsiChar(str8), length(patData.surname));

to bring a normal delphi string (SurName) to a structure (patData) that contains single byte characters?

Hi!

I'm currently migrating our projects from Delphi2010 to Delphi 10.4. One of my biggest

changes is actually using StrLCopy and other Ansistring functions that used to be in SysUtils.

They are now marked as deprecated and moved to System.AnsiStrings so ... I followed the compiler hint.

Now the base problem is that the compiler is confused which function to use so I always prefix the call

with

System.AnsiStrings.StrLCopy ...

which fixed that.

But that looks actually very "ugly" and I have the feeling that this is not the way to go idera ment to go.

Is there a "best" or anticipated way to handle this?

kind regards

  Mike

You can check out:

https://github.com/mikerabat/mrmath

It provides a set of different random number generators:

* Standard delphi ( linear congruential )

* Mersenne Twister

* BCrypt (or actually os dependent)

* If the cpu supports it: the x86 RDRAND instruction

Hi there!

There is the C library libFido2 around in form of a dll. I took the liberty to put arround a Delphi library that supports

FIDO2 keys around that library including a little project that shows how one could do WebAuthn logins.

check out:

https://github.com/mikerabat/DelphiFido2

https://github.com/mikerabat/DelphiCBOR

for further reading.

kind regards

  Mike

Hi!

You could use the regression functions from here:

https://github.com/mikerabat/mrmath

and the regression example from here:

http://www.mrsoft.org/home/downloads.html

Cool thanks for the info!

Thanks for the hint! I will definitely look into that 🙂

Hi Folks!

I hope anyone can give me some hints on this topic: Firebird Data encryption and encryption of the data sent.

Especially the "over the line" encryption of data is going to be mandatory for our next projects since there are

a few attack vectors we didn't really anticapte that this would ever be a problem: an attacker has access to an internal

network (e.g. a hospital) and reads the communication from between our program and the remote database.

So... data encryption ala SSL, TLS would be a great thing to have. So far the FAQ from firebird only suggest to

use an SSH tunnel or similar to connect to the database but ... is this feasable or even performant?

Has anyone any experience with such a problem or is there anything some Delphi components could do?

kind regards

   Mike

Hey guys!

I wanted to share my matrix library with you

basically it contains tons of function for matrix manipulation (add, sub, mult, inverse)

and higher order functions (SVD, CCA, PLS and tons more)

The library is highly optimized (handoptimized assembler, AVX, SSE, FMA support) and can be multithreaded.

Check out the repository on

https://github.com/mikerabat/mrmath

and check some tiny examples on:

http://www.mrsoft.org/home/downloads.html

hope you have fun with that ;)

kind regards

   Mike