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EAP-FAST: Check sha1_t_prf() result in eap_fast_get_cmk()

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This gets rid of a valgrind warning on uninitialized memory read in the
eap_proto_fast_errors test case where the result was used after the
failed sha1_t_prf() call.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2016-05-16 22:24:01 +03:00 committed by Jouni Malinen
parent 636a23881b
commit 92abe3782f
1 changed files with 4 additions and 3 deletions
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7
src/eap_peer/eap_fast.c
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@ -710,9 +710,10 @@ static int eap_fast_get_cmk(struct eap_sm *sm, struct eap_fast_data *data,
if (eap_fast_get_phase2_key(sm, data, isk, sizeof(isk)) < 0)
return -1;
wpa_hexdump_key(MSG_MSGDUMP, "EAP-FAST: ISK[j]", isk, sizeof(isk));
sha1_t_prf(data->simck, EAP_FAST_SIMCK_LEN,
"Inner Methods Compound Keys",
isk, sizeof(isk), imck, sizeof(imck));
if (sha1_t_prf(data->simck, EAP_FAST_SIMCK_LEN,
"Inner Methods Compound Keys",
isk, sizeof(isk), imck, sizeof(imck)) < 0)
return -1;
data->simck_idx++;
os_memcpy(data->simck, imck, EAP_FAST_SIMCK_LEN);
wpa_hexdump_key(MSG_MSGDUMP, "EAP-FAST: S-IMCK[j]",