james/yubikey.rs
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lib: check internal authentication crypt errors

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This commit is contained in:
Dave Pate
2019-01-07 15:10:18 -08:00
committed by Klas Lindfors
parent b2dd16deb4
commit eb250134f8
1 changed files with 14 additions and 2 deletions
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lib/ykpiv.c
+14 -2
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@@ -684,6 +684,7 @@ ykpiv_rc ykpiv_authenticate(ykpiv_state *state, unsigned const char *key) {
uint32_t recv_len = sizeof(data);
int sw;
ykpiv_rc res;
des_rc drc = DES_OK;
des_key* mgm_key = NULL;
size_t out_len = 0;
@@ -728,7 +729,12 @@ ykpiv_rc ykpiv_authenticate(ykpiv_state *state, unsigned const char *key) {
unsigned char *dataptr = apdu.st.data;
unsigned char response[8];
out_len = sizeof(response);
des_decrypt(mgm_key, challenge, sizeof(challenge), response, &out_len);
drc = des_decrypt(mgm_key, challenge, sizeof(challenge), response, &out_len);
if (drc != DES_OK) {
res = YKPIV_AUTHENTICATION_ERROR;
goto Cleanup;
}
recv_len = sizeof(data);
memset(apdu.raw, 0, sizeof(apdu));
@@ -766,7 +772,13 @@ ykpiv_rc ykpiv_authenticate(ykpiv_state *state, unsigned const char *key) {
{
unsigned char response[8];
out_len = sizeof(response);
des_encrypt(mgm_key, challenge, sizeof(challenge), response, &out_len);
drc = des_encrypt(mgm_key, challenge, sizeof(challenge), response, &out_len);
if (drc != DES_OK) {
res = YKPIV_AUTHENTICATION_ERROR;
goto Cleanup;
}
if (memcmp(response, data + 4, 8) == 0) {
res = YKPIV_OK;
}