Re: [Lazarus] Encryption compatible with .net
I see another problem: Your pascal implementation sets key badly. I think it should be 'key'[1]. However as I didn't even use buffer with constant string so I might be wrong. You should also try to encrypt longer messages to see if first block is intact because then it's padding problem. Please also note that such implementation is insecure because IV is static, key isn't derived with KDF, DES is insecure nowadays, and no integrity checking is done. So if you want your encryption to be of any security, fix these flaws. Also consider cleaning up code so we don't get confused about unused variables. (Btw. My first post on this mailing list - yay!) W dniu .11.2015 o 12:56 Gabriele Cappelletto pisze: But the cipther constructor does not refer to vector, but the variable IV. Vector is not used in this example Il 15/11/2015 12:44, DougC ha scritto: After quick look I noticed that var Vector : array of Byte; SetLength(Vector, 8); Vector[0] := 1; Vector[1] := 2; Vector[2] := 3; Vector[3] := 4; Vector[4] := 5; Vector[5] := 6; Vector[6] := 7; Vector[7] := 8; does not match Dim vector As String = "12345678" Should be something like Vector[0] := '1'; Vector[1] := '2'; Vector[2] := '3'; Vector[3] := '4'; Vector[4] := '5'; Vector[5] := '6'; Vector[6] := '7'; Vector[7] := '8'; I didn't look at the rest. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus-- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Questions about SetLength
Hi, Maybe it is not a correct list, but I am going to ask my question anyway :) Is there a penalty for calling SetLength if array already has the length we need? Yes, there's always penalty for operations that you don't need. FPC will generate normal call, pass arguments, etc. I checked if SetLength with ansistring detects that requested size is same: It doesn't, it performs whole allocation and moving. And if there is a penalty - is there a way to write "generic" function SmartSetLength(array,length) that will only call SetLength if necessary? No. Compiler internally emits information about element size, how are they refcounted etc. as a pointer. Your best bet would be "hacking" FPC to emit such information to your procedure and then pass it to internal fpc setlength. I would personally like it a lot if there was way to access "secret" information stored along with dynamic arrays/ansistrings, however it's not easy task. I think best bet would be storing secret information pointers along with refcount/length and then making functions that allow editing those data. Then we could have generic "dynamic array" type (I assume?). -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Code completion problems with Graph units
On 10.09.2014 07:52, Sven Barth wrote: Nope... moving the "graph" node up does not change anything *sigh* (Warning: No nice solutions here) Well I would first try if CodeTools are just unable to find inc file, so I would try to move/copy include file so CodeTools can find it. You noted that sometimes It tells you it's unable to find end of file: Maybe conditionals make CodeTools ignore rest of file? You could try messing with predefined conditionals. Or bruteforce solution: Manually include inc file and then test if everything works. I wouldn't be surprised if CodeTools couldn't parse this file due to some bug in parsing, there are still some notable bugs there. -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TListBox Find method?
Why not to implement a Find method for TListBox which allows partial search? Delphi missed it, but why Lazarus does the same? I'd say that you cannot find something in TListBox which is visual object. You can search something in items it has, therefore you use "Items.Indexof". Then you only need to take care of how TStringList works and TListBox is unimportant. So it will be easier to deal with than if we had custom implementations of containters for all types of visual interfaces like TEdit, TMemo etc... Moreover if we will implement DeleteMany for example, we will only have to update TStringList, not TEdit/TMemo/TListbox. Only argument against such thing is case where you have to use many characters to represent same thing. So we have "with" construction...-- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Where do lazarus apps look for dll's?
Linux uses ELF, not PE/COFF. You are correct, I mistaken COFF from Unix with ELF. In ELF there is simply e_ident[EI_CLASS] at offset 4 and e_machine at offset $12. Source: http://en.wikipedia.org/wiki/Executable_and_Linkable_Format -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Where do lazarus apps look for dll's?
(How) can the calling program know about the "bittiness" of a dll / so it tries to load ? http://msdn.microsoft.com/en-us/library/windows/desktop/ms680313(v=vs.85).aspx There is just field that tells what is architecture of file. This applies both to EXE and DLL. You can see msdn has x86,x64 and itanium there, but there are many more existing. In Linux situation is same, it also uses COFF and this field (AFAIK). -- ___ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
