Decrypting (and encrypting) Large files

[Tom Glod]

there is no way to decrypt something that does not fit in memory. with 64
bit builds the limit is whatever the motherboard  supports.   on 32 bit
builds the limit is whatever the os will allow 1 process to have,
but then u need memory to store the decrypted data too.
you can use a command line program to outsource that work and memory
management.

On Mon, May 9, 2022 at 9:44 AM Craig Newman via use-livecode <
use-livecode at lists.runrev.com> wrote:

> I believe that there is no upper limit to the size of a variable in LC. So
> I am with Mike here. What makes you nervous about dealing with a large
> dataset within LC itself?
>
> Craig
>
> > On May 9, 2022, at 8:49 AM, Mike Kerner via use-livecode <
> use-livecode at lists.runrev.com> wrote:
> >
> > have you tried ti? i have not run into a situation where a variable was
> too
> > big.
> >
> > On Sun, May 8, 2022 at 6:46 PM Mark Clark via use-livecode <
> > use-livecode at lists.runrev.com> wrote:
> >
> >> Wondering if anyone has used LiveCode for encrypting-decrypting large
> >> files? The docs typically have nice examples for files that can fit
> into a
> >> variable, but what are folks doing for big files that are larger than
> what
> >> you’d want in a variable? I’m thinking about using LC for decrypting zip
> >> compressed log files that can be multiple gigabytes in size. I’d like to
> >> use just LC vs. resorting to shell if possible.
> >>
> >> Likely need a hash value to compare the decrypted output against the
> >> original as well. I’m thinking some variation along the lines of open
> file
> >> x for read, reading some manageable chunk into memory, decrypting a
> >> portion, writing that to disk and repeat. But that seems too simple.
> Think
> >> we need AES 256. Any shared experience much appreciated.
> >>
> >> Thanks all,
> >>
> >> Mark
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