About 'CryptDestroyKey' function!

alanchan · #1 04-Sep-2008, 01:13

I have some questions about using Cavium CSP, which need your kindness help.

According to the explain in MSDN, the function 'CryptDestroyKey' of CRYPTAPI
will not only destory the key handle, but also free the memory that the key
occupied.

But using Cavium CSP, the function does not free the memory. What is the
problem?

It is my code below. This circle will only run 64 times around, then it
fails because of lack of memory in Card.

CPP / C++ / C Code:



while(1)
{
if(!CryptImportPublicKeyInfo(hCryptProv,
MY_ENCODING_TYPE,&(pCertContext->pCertInfo->SubjectPublicKeyInfo),&hPubKey))
{
cout<<hex<<GetLastError()<<endl;
break;
goto while_end;
}
else
{
bSuceess = TURE;
}



while_end:
if(hPubKey) CryptDestroyKey(hPubKey); 



if(bSuceess){iSuccess++;}
else{iFalse++;}
}

Thank you for your help!

TurboPT · #2 04-Sep-2008, 06:33

Quote:

Originally Posted by alanchan

According to the explain in MSDN, the function 'CryptDestroyKey' of CRYPTAPI
will not only destory the key handle, but also free the memory that the key
occupied.

I don't know if that's entirely true based on the MSDN's information about that function:

Quote:

Originally Posted by MSDN

... However, the underlying public/private key pair is not destroyed by this function. Only the handle is destroyed.

Could that possibly be part of the problem? I haven't worked with this area myself, so I'm not 100% certain.

EDIT:
Since we don't have the full picture of the source, check this MSDN example in case it might have any relevance.

alanchan · #3 04-Sep-2008, 20:28

Hi TurboPT, Thank you for your reply! I think if there is only Public Key, the function of 'CryptDestroyKey' can destroy the key handle and free the memory at the same time. On the other hand, if there is Public/Private key pair, the function just destroy only the handle.So I wanna know wheather any other function can free the memory of the accelerater card? I hope can get your advice. Thank you!

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About 'CryptDestroyKey' function!

Re: About 'CryptDestroyKey' function!

Re: About 'CryptDestroyKey' function!