I've just started using openssl, and have been having some problems with
valgrind. Here's my distilled test program:
#include <openssl-1.0.0e/include/openssl/hmac.h>
#include <openssl-1.0.0e/include/openssl/evp.h>
#include <string.h>
char key[20] = { 0 };
int
main()
{
HMAC_CTX * context;
context = (HMAC_CTX *) malloc(sizeof(*context));
HMAC_CTX_init(context);
HMAC_Init_ex(context, key, sizeof(key), EVP_sha1(), NULL);
return 0;
}
I used ./config for setup on RedHat, and got linux-elf as my configuration.
To compile the test program:
g++ -o ot -ggdb -I/home/bertoni/src/ ot.c -L. -ltestcrypto -ldl
after installing libcrypto.a as libtestcrypto.a
When I run it under valgrind, I get errors:
==30797== Invalid write of size 1
==30797== at 0x400655C: memset (mc_replace_strmem.c:479)
==30797== by 0x804959D: HMAC_Init_ex (hmac.c:100)
==30797== Address 0x40160E0 is 0 bytes after a block of size 184 alloc'd
==30797== at 0x40053C0: malloc (vg_replace_malloc.c:149)
==30797== by 0x80491F0: main (ot.c:12)
and so on.
The hmactest program run is clean, so I'm not sure what I'm doing
incorrectly.. Any pointers would be appreciated.
Jon Bertoni
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