Hello everybody,
I have a doubt about how to use the HMAC() function. I developed this code in C
language: (abridged)
...
unsigned char *auth = NULL;
unsigned char *session_auth_key;
unsigned char *auth_tag;
.
.
auth = HMAC(EVP_sha1(), session_auth_key, auth_key_length, length,
auth_tag, auth_tag_length);
.
.
Is the first argument in HMAC correct?
When i run my program with GDB (GNU Project Debugger ) i get the string
"EVP_DigestFinal_ex () from /usr/lib/i686/cmov/libcrypto.so.0.9.8" as result.
I think that the problem deals with the HMAC function.
I use also the AES_ctr128_encrypt in my program. Can it have an influence?
Thanks for your help!
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