We have Windows application which passes data to OpenSSL.exe to encrypt
as a Windows command, then scrapes the encrypted data back from the
output.  The Windows app can call external Windows commands but we
cannot call APIs or extend the functionality programmatically.
Functionally it works, but it doesn't scale as each time you call
OpenSSL.exe it takes about a second and spikes the CPU.  The application
we are using is required to process 6000 records every hour.  

 

I have two tests set up:

1.       A batch file which runs 6000 times, repeatedly running the
following command:

Openssl.exe aes-256-cbc -a -e -k eiccmkjd94jfgniw03ljkdlfutcnv320 -in
test.txt

 

2.       A text file with the following line repeated 6000 times, which
I paste into the OpenSSL CLI:

aes-256-cbc -a -e -k eiccmkjd94jfgniw03ljkdlfutcnv320 -in test.txt

 

When I use the batch file which invokes OpenSSL.exe 6000 times, it takes
several hours to complete and spikes the CPU significantly.  It seems to
be the initialisation of the OpenSSL.exe program rather than the
encryption however, as if I paste in the text file to the OpenSSL.exe
CLI it completes in several seconds and takes very little CPU.

 

What I need is a way of running OpenSSL.exe as a process which I can
pass parameters to on STDIN, and output parameters to STDOUT.  I would
like to be able to call another batch file or program with the
unencrypted data as the input parameter which would then pass this to
the running "service", retrieve the  encrypted data result from this
"service" and pass it as the output.

 

Can anyone enlighten me on a potential solution for this?

 

Thanks and Regards,

 

Leon Funnell


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