Help with Crypto++

[Inês]

Hi everyone,

I am new to Crypto++ and I'm having some problems, I'd like to know if you could give me some help. The matter is the following, I have already compiled/installed crypto++ which I've cloned from github. 

Now, while running this command "cryptest tv chacha" the following errors appear:

CryptoPP::Exception caught: ObjectFactoryRegistry: could not find factory for algorithm ChaCha

Skipping to next test.

CryptoPP::Exception caught: Unexpected error during validation test

This also happen with "cryptest tv all" and "cryptest v".

Also, if I run this command "./cryptest.exe b 60 1.5" at a certain point almost when it is finishing the retrieving of the html page this error appears:

"<TBODY style="background: white;">

Exception caught: AES/GCM: message length exceeds maximum"

As I am new to this library I am a little confused and don't know what to expect. If any of you kind souls could give me some help I would be very grateful as I have to use this for a project.

Best regards,

Ines.

[Jeffrey Walton]

I've seen that before on Linux. It sounds like a newer version of
cryptest.exe is being used with an older version of the library. It is
the Linux version of DLL Hell.

If possible, use either one or the other. Otherwise, use something to
set your library path, like the linker's $ORIGIN option or
LD_LIBRARY_PATH at runtime.

Jeff

[Inês]

Isn't cryptest inside the library? I have the most recent library version

[Inês]

Can you give me some help? I am so confused.

On Saturday, November 28, 2020 at 12:37:59 PM UTC Jeffrey Walton wrote:

[Uri Blumenthal]

Run cryptest.exe like this:

LD_LIBRARY_PATH=.:${LD_LIBRARY_PATH} ./cryptest.exe TV all

On Nov 28, 2020, at 20:03, Inês <inesl...@gmail.com> wrote:

Can you give me some help? I am so confused.

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[Inês]

nice that worked! Is there any way to set the path so that I don-t have to run all that command everytime?

[Inês]

I've tried this one:  LD_LIBRARY_PATH=.:${LD_LIBRARY_PATH} ./cryptest.exe b 60 2.1

and still got the error though... "Exception caught: AES/GCM: message length exceeds maximum"

[Inês]

I solved by reducing the time of each cyle.

One more question, is it possible to had algorithms to this library? I need PRESENT and RSA algorithms benchmarks

On Saturday, November 28, 2020 at 12:37:59 PM UTC Jeffrey Walton wrote:

[Jeffrey Walton]

On Wed, Dec 2, 2020 at 9:35 AM Inês <inesl...@gmail.com> wrote:
>
> I solved by reducing the time of each cycle.

That was probably a good choice. 60 seconds was a bit much. I've found
3 seconds is enough to gather a good statistic.

Also see https://www.cryptopp.com/wiki/Benchmarks.

> One more question, is it possible to had algorithms to this library? I need PRESENT and RSA algorithms benchmarks

RSA is already present.

We probably won't add PRESENT. It's a 64-bit block cipher optimized
for hardware. There's not much demand for it, either.

You can find a C implementation for PRESENT at
http://www.lightweightcrypto.org/implementations.php. Also see
https://duckduckgo.com/?q=PRESENT+cipher+site:github.com.

Jeff

[Inês]

Why does RSA have different metrics (Milliseconds/Op and Megabytes/Op and how it differs from the  other as AES?

[Inês]

@Jeffrey Can you help me with something? Is it possible to see the memory usage of the executed algorithms?

[Inês]

And monitor the data lenght. I am trying to build a graph like this