OK, when debugging with the VS2019 debugger, I found out that an exception
is being thrown in the call to MASM_RDSEED_GenerateBlock in
void RDSEED::GenerateBlock(byte *output, size_t size)
{
CRYPTOPP_ASSERT((output && size) || !(output || size));
if (size == 0) return;
#if defined(MASM_RDSEED_ASM_AVAILABLE)
MASM_RDSEED_GenerateBlock(output, size);
.... not relevant ...
}
Will look a bit further into this, but in the meanwhile: any ideas on how
to fix this are highly appreciated :-) I want all the tests to pass!
Kind regards,
Bart
On Thursday, March 18, 2021 at 5:11:16 PM UTC+1 Bart Vandewoestyne wrote:
> 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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