Hi ,
I am using openssl-0.9.8e in my codebase.
I am using SHA1 in my code base to authenticate my data. The code seems to work
fine for 5-10 mins. But after sometime it crashes as openssl_malloc returns
null in function EVP_DigestInit_ex . This is defiantly not the problem of
memory exhaustion as, the crash dumps shows 700 KB of largest free memory block
available and the ctx size is of 100 bytes.
This seems to be the case of stack corruption. While surfing though the net , I
found exactly similar problem on this link
http://www.mail-archive.com/openssl-users@openssl.org/msg51093.html .
I would like to know , if this problem is due to my code , or some bug in
openssl. My code snippet is shown below…
Calculate_Hash(….)
{
HMAC_CTX hmacCtx;
HMAC_Init( &hmacCtx , (const void *)authKey , keyLength , EVP_sha1());
HMAC_Update( &hmacCtx , authStart , authLength );
HMAC_Final( &hmacCtx , tagOffset , &len );
HMAC_CTX_cleanup(&hmacCtx);
}
Regards,
Vikas
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