Re: cryptest fails, but only when redirecting output to a file

Hmm... I just discovered that the cryptest.exe v output for my VS2019 build 
is not complete.  It stops at

Testing RDSEED generator...

But a colleague of mine who used VS2015 to build it (also debug build), has 
a much longer output for 'cryptest v'...
So it seems that the RDSEED generator test fails somehow...

Any ideas on what I can do to find out why this fails?  Is there anybody 
using VS2019 who can confirm this behavior?

Regards,
Bart

On Thursday, March 18, 2021 at 4:46:27 PM UTC+1 Bart Vandewoestyne wrote:

> Hello,
>
> I have built Crypto++ 8.20 on Windows using Visual Studio 2019 in both 
> Debug and Release configuration using something like
>
> msbuild cryptest.sln /t:cryptlib;cryptest 
> /p:Configuration="Debug";Platform=Win32;PlatformToolset=v142;WholeProgramOptimization="false""
>
> For both the Debug and Release build, when I run the cryptest.exe as 
> follows:
>
> cryptest.exe v
>
> it seems to run fine because I get:
>
>
> -------------------------------------------------------------------------------------------------------------------------------------
> Using seed: 1616082124
>
> Testing Settings...
>
> passed:  Your machine is little endian.
> passed:  Aligned data access.
> passed:  sizeof(byte) == 1
> passed:  sizeof(word16) == 2
> passed:  sizeof(word32) == 4
> passed:  sizeof(word64) == 8
> passed:  sizeof(hword) == 2, sizeof(word) == 4, sizeof(dword) == 8
> passed:  cacheLineSize == 64
> hasSSE2 == 1, hasSSSE3 == 1, hasSSE4.1 == 1, hasSSE4.2 == 1, hasAVX == 1, 
> hasAVX2 == 1, hasAESNI == 1, hasCLMUL == 1, hasRDRAND == 1, hasRDSEED == 1, 
> hasSHA == 0, isP4 == 0
>
> Testing operating system provided nonblocking random number generator...
>
> passed:  10240 generated bytes compressed to 10245 bytes by DEFLATE
> passed:  IncorporateEntropy with 128 bytes
> passed:  GenerateWord32 and Crop
> passed:  DiscardBytes with 1024 bytes
>
> Testing RandomPool generator...
>
> passed:  10240 generated bytes compressed to 10245 bytes by DEFLATE
> passed:  IncorporateEntropy with 128 bytes
> passed:  GenerateWord32 and Crop
> passed:  DiscardBytes with 1024 bytes
>
> Testing AutoSeeded RandomPool generator...
>
> passed:  10240 generated bytes compressed to 10245 bytes by DEFLATE
> passed:  IncorporateEntropy with 128 bytes
> passed:  GenerateWord32 and Crop
> passed:  DiscardBytes with 1024 bytes
>
> Testing OldRandomPool generator...
>
> passed:  10240 generated bytes compressed to 10245 bytes by DEFLATE
> passed:  IncorporateEntropy with 128 bytes
> passed:  GenerateWord32 and Crop
> passed:  DiscardBytes with 1024 bytes
> passed:  Expected sequence from PGP-style RandomPool (circa 2007)
>
> Testing AutoSeeded X917 generator...
>
> passed:  10240 generated bytes compressed to 10245 bytes by DEFLATE
> passed:  IncorporateEntropy with 128 bytes
> passed:  GenerateWord32 and Crop
> passed:  DiscardBytes with 1024 bytes
>
> Testing Padlock RNG generator...
>
> Padlock RNG generator not available, skipping test.
>
> Testing RDRAND generator...
>
> passed:  10240 generated bytes compressed to 10245 bytes by DEFLATE
> passed:  IncorporateEntropy with 128 bytes
> passed:  GenerateWord32 and Crop
> passed:  DiscardBytes with 1024 bytes
> passed:  Maurer Randomness Test returned value 1.000000
>
> Testing RDSEED generator...
>
> -------------------------------------------------------------------------------------------------------------------------------------
> However, when (in a script or on my windows cmd prompt) I try to redirect 
> the output to a file using
>
> cryptest.exe v > output.txt
> or
> cryptest.exe v > output.txt 2>&1
>
> then i get my cmd prompt back, but the output.txt file only contains
>
> Using seed: 1616082222      
>
> and that's it.  What am I doing wrong here?
>
> Regards,
> Bart
>

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