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fill in more bits

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This commit is contained in:
Love Hornquist Astrand
2011-05-16 21:02:05 -07:00
committed by Love Hörnquist Åstrand
parent 7635eee8c4
commit b6d5637b61
1 changed files with 40 additions and 18 deletions
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58
lib/krb5/init_creds_pw.c
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@@ -1670,7 +1670,9 @@ check_fast(krb5_context context, struct fast_state *state)
static krb5_error_code
fast_unwrap_as_rep(krb5_context context, struct fast_state *state, AS_REP *rep)
fast_unwrap_as_rep(krb5_context context, int32_t nonce,
krb5_data *chksumdata,
struct fast_state *state, AS_REP *rep)
{
PA_FX_FAST_REPLY fxfastrep;
KrbFastResponse fastrep;
@@ -1726,37 +1728,48 @@ fast_unwrap_as_rep(krb5_context context, struct fast_state *state, AS_REP *rep)
krb5_keyblock result;
ret = _krb5_fast_cf2(context,
state->reply_key,
"",
fastrep.strengthen_key,
"",
"strengthenkey",
state->reply_key,
"replykey",
&result,
NULL);
if (ret)
goto out;
krb5_free_keyblock(context, state->reply_key);
state->reply_key = NULL;
ret = krb5_copy_keyblock(context, &result, &state->reply_key);
krb5_free_keyblock_contents(context, state->reply_key);
*state->reply_key = result;
}
if (nonce != fastrep.nonce) {
ret = EINVAL;
goto out;
}
if (fastrep.finished) {
if (chksumdata == NULL)
return EINVAL;
ret = krb5_verify_checksum(context, state->armor_crypto,
KRB5_KU_FAST_FINISHED,
chksumdata->data, chksumdata->length,
&fastrep.finished->ticket_checksum);
if (ret)
goto out;
krb5_free_keyblock_contents(context, &result);
}
#if 0
/* extract and replace */
fastrep.nonce;
if (fastrep.finished) {
/* validate */
finished.ticket_checksum;
/* store */
#if 0
finished.timestamp;
finished.usec = 0;
#endif
/* update */
#if 0
finished.crealm;
finished.cname;
}
#endif
} else if (chksumdata) {
/* expected fastrep.finish but didn't get it */
ret = EINVAL;
}
out:
free_PA_FX_FAST_REPLY(&fxfastrep);
@@ -1832,8 +1845,8 @@ make_fast_ap_fxarmor(krb5_context context,
krb5_free_keyblock_contents(context, &state->armor_key);
ret = _krb5_fast_armor_key(context,
auth_context->keyblock,
auth_context->local_subkey,
auth_context->keyblock,
&state->armor_key,
&state->armor_crypto);
if (ret)
@@ -2033,11 +2046,20 @@ krb5_init_creds_step(krb5_context context,
ret = decode_AS_REP(in->data, in->length, &rep.kdc_rep, &size);
if (ret == 0) {
unsigned eflags = EXTRACT_TICKET_AS_REQ | EXTRACT_TICKET_TIMESYNC;
krb5_data data;
/*
* Unwrap AS-REP
*/
ret = fast_unwrap_as_rep(context, &ctx->fast_state, &rep.kdc_rep);
ASN1_MALLOC_ENCODE(Ticket, data.data, data.length,
&rep.kdc_rep.ticket, &size, ret);
if (ret)
goto out;
heim_assert(data.length == size, "ASN.1 internal error");
ret = fast_unwrap_as_rep(context, ctx->nonce, &data,
&ctx->fast_state, &rep.kdc_rep);
krb5_data_free(&data);
if (ret)
goto out;