>
>
>
> #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));
Do you need to malloc the context (a pointer) ?
I don't think so.
Remove the line?
>
> 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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