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eapol: Tweak API

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We need to extract quite a bit of information from the EAPoL frames, so
tweak the API to just verify that a frame is of a particular type
This commit is contained in:
Denis Kenzior 2015-02-13 16:08:33 -06:00
parent 7ffe465ab2
commit 54d4090542
2 changed files with 32 additions and 35 deletions
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58
src/eapol.c
View File

@ -110,98 +110,94 @@ const struct eapol_key *eapol_key_validate(const uint8_t *frame, size_t len)
return ek;
}
bool eapol_process_ptk_1_of_4(const uint8_t *frame, size_t len,
uint8_t out_anonce[])
const struct eapol_key *eapol_verify_ptk_1_of_4(const uint8_t *frame,
size_t len)
{
const struct eapol_key *ek;
ek = eapol_key_validate(frame, len);
if (!ek)
return false;
return NULL;
/* Verify according to 802.11, Section 11.6.6.2 */
if (!ek->key_type)
return false;
return NULL;
if (ek->smk_message)
return false;
return NULL;
if (ek->install)
return false;
return NULL;
if (!ek->key_ack)
return false;
return NULL;
if (ek->key_mic)
return false;
return NULL;
if (ek->secure)
return false;
return NULL;
if (ek->error)
return false;
return NULL;
if (ek->request)
return false;
return NULL;
if (ek->encrypted_key_data)
return false;
return NULL;
VERIFY_IS_ZERO(ek->eapol_key_iv);
VERIFY_IS_ZERO(ek->key_rsc);
VERIFY_IS_ZERO(ek->reserved);
VERIFY_IS_ZERO(ek->key_mic_data);
memcpy(out_anonce, ek->key_nonce, sizeof(ek->key_nonce));
return true;
return ek;
}
bool eapol_process_ptk_2_of_4(const uint8_t *frame, size_t len,
uint8_t out_snonce[])
const struct eapol_key *eapol_verify_ptk_2_of_4(const uint8_t *frame,
size_t len)
{
const struct eapol_key *ek;
uint16_t key_len;
ek = eapol_key_validate(frame, len);
if (!ek)
return false;
return NULL;
/* Verify according to 802.11, Section 11.6.6.2 */
if (!ek->key_type)
return false;
return NULL;
if (ek->smk_message)
return false;
return NULL;
if (ek->install)
return false;
return NULL;
if (ek->key_ack)
return false;
return NULL;
if (!ek->key_mic)
return false;
return NULL;
if (ek->secure)
return false;
return NULL;
if (ek->error)
return false;
return NULL;
if (ek->request)
return false;
return NULL;
if (ek->encrypted_key_data)
return false;
return NULL;
key_len = L_BE16_TO_CPU(ek->key_length);
if (key_len != 0)
return false;
return NULL;
memcpy(out_snonce, ek->key_nonce, sizeof(ek->key_nonce));
return true;
return ek;
}
static struct eapol_key *eapol_create_common(

9
src/eapol.h
View File

@ -98,10 +98,11 @@ bool eapol_calculate_mic(const uint8_t *kck, const struct eapol_key *frame,
const struct eapol_key *eapol_key_validate(const uint8_t *frame, size_t len);
bool eapol_process_ptk_1_of_4(const uint8_t *frame, size_t len,
uint8_t out_anonce[]);
bool eapol_process_ptk_2_of_4(const uint8_t *frame, size_t len,
uint8_t out_snonce[]);
const struct eapol_key *eapol_verify_ptk_1_of_4(const uint8_t *frame,
size_t len);
const struct eapol_key *eapol_verify_ptk_2_of_4(const uint8_t *frame,
size_t len);
struct eapol_key *eapol_create_ptk_2_of_4(
enum eapol_protocol_version protocol,
enum eapol_key_descriptor_version version,