Decrypting (and encrypting) Large files

[Craig Newman]

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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