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s4-schannel: strip trailing whitespace.

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Guenther
This commit is contained in:
Günther Deschner 2009-09-13 15:21:20 +02:00
parent f8014d30e7
commit 9cb205d753
1 changed files with 36 additions and 36 deletions
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72
source4/auth/gensec/schannel_sign.c
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@ -1,21 +1,21 @@
/*
/*
Unix SMB/CIFS implementation.
schannel library code
Copyright (C) Andrew Tridgell 2004
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
@ -49,11 +49,11 @@ static void netsec_deal_with_seq_num(struct schannel_state *state,
/*******************************************************************
Calculate the key with which to encode the data payload
Calculate the key with which to encode the data payload
********************************************************************/
static void netsec_get_sealing_key(const uint8_t session_key[16],
const uint8_t seq_num[8],
uint8_t sealing_key[16])
uint8_t sealing_key[16])
{
static const uint8_t zeros[4];
uint8_t digest2[16];
@ -63,26 +63,26 @@ static void netsec_get_sealing_key(const uint8_t session_key[16],
for (i = 0; i < 16; i++) {
sess_kf0[i] = session_key[i] ^ 0xf0;
}
hmac_md5(sess_kf0, zeros, 4, digest2);
hmac_md5(digest2, seq_num, 8, sealing_key);
}
/*******************************************************************
Create a digest over the entire packet (including the data), and
Create a digest over the entire packet (including the data), and
MD5 it with the session key.
********************************************************************/
static void schannel_digest(const uint8_t sess_key[16],
const uint8_t netsec_sig[8],
const uint8_t *confounder,
const uint8_t *data, size_t data_len,
uint8_t digest_final[16])
uint8_t digest_final[16])
{
uint8_t packet_digest[16];
static const uint8_t zeros[4];
struct MD5Context ctx;
MD5Init(&ctx);
MD5Update(&ctx, zeros, 4);
MD5Update(&ctx, netsec_sig, 8);
@ -91,7 +91,7 @@ static void schannel_digest(const uint8_t sess_key[16],
}
MD5Update(&ctx, data, data_len);
MD5Final(packet_digest, &ctx);
hmac_md5(sess_key, packet_digest, sizeof(packet_digest), digest_final);
}
@ -99,14 +99,14 @@ static void schannel_digest(const uint8_t sess_key[16],
/*
unseal a packet
*/
NTSTATUS schannel_unseal_packet(struct gensec_security *gensec_security,
TALLOC_CTX *mem_ctx,
uint8_t *data, size_t length,
const uint8_t *whole_pdu, size_t pdu_length,
NTSTATUS schannel_unseal_packet(struct gensec_security *gensec_security,
TALLOC_CTX *mem_ctx,
uint8_t *data, size_t length,
const uint8_t *whole_pdu, size_t pdu_length,
const DATA_BLOB *sig)
{
struct schannel_state *state = talloc_get_type(gensec_security->private_data, struct schannel_state);
uint8_t digest_final[16];
uint8_t confounder[8];
uint8_t seq_num[8];
@ -126,8 +126,8 @@ NTSTATUS schannel_unseal_packet(struct gensec_security *gensec_security,
arcfour_crypt(confounder, sealing_key, 8);
arcfour_crypt(data, sealing_key, length);
schannel_digest(state->creds->session_key,
netsec_sig, confounder,
schannel_digest(state->creds->session_key,
netsec_sig, confounder,
data, length, digest_final);
if (memcmp(digest_final, sig->data+16, 8) != 0) {
@ -150,10 +150,10 @@ NTSTATUS schannel_unseal_packet(struct gensec_security *gensec_security,
/*
check the signature on a packet
*/
NTSTATUS schannel_check_packet(struct gensec_security *gensec_security,
TALLOC_CTX *mem_ctx,
const uint8_t *data, size_t length,
const uint8_t *whole_pdu, size_t pdu_length,
NTSTATUS schannel_check_packet(struct gensec_security *gensec_security,
TALLOC_CTX *mem_ctx,
const uint8_t *data, size_t length,
const uint8_t *whole_pdu, size_t pdu_length,
const DATA_BLOB *sig)
{
struct schannel_state *state = talloc_get_type(gensec_security->private_data, struct schannel_state);
@ -173,8 +173,8 @@ NTSTATUS schannel_check_packet(struct gensec_security *gensec_security,
dump_data_pw("seq_num:\n", seq_num, 8);
dump_data_pw("sess_key:\n", state->creds->session_key, 16);
schannel_digest(state->creds->session_key,
netsec_sig, NULL,
schannel_digest(state->creds->session_key,
netsec_sig, NULL,
data, length, digest_final);
netsec_deal_with_seq_num(state, digest_final, seq_num);
@ -198,10 +198,10 @@ NTSTATUS schannel_check_packet(struct gensec_security *gensec_security,
/*
seal a packet
*/
NTSTATUS schannel_seal_packet(struct gensec_security *gensec_security,
TALLOC_CTX *mem_ctx,
uint8_t *data, size_t length,
const uint8_t *whole_pdu, size_t pdu_length,
NTSTATUS schannel_seal_packet(struct gensec_security *gensec_security,
TALLOC_CTX *mem_ctx,
uint8_t *data, size_t length,
const uint8_t *whole_pdu, size_t pdu_length,
DATA_BLOB *sig)
{
struct schannel_state *state = talloc_get_type(gensec_security->private_data, struct schannel_state);
@ -217,8 +217,8 @@ NTSTATUS schannel_seal_packet(struct gensec_security *gensec_security,
RSIVAL(seq_num, 0, state->seq_num);
SIVAL(seq_num, 4, state->initiator?0x80:0);
schannel_digest(state->creds->session_key,
netsec_sig, confounder,
schannel_digest(state->creds->session_key,
netsec_sig, confounder,
data, length, digest_final);
netsec_get_sealing_key(state->creds->session_key, seq_num, sealing_key);
@ -246,10 +246,10 @@ NTSTATUS schannel_seal_packet(struct gensec_security *gensec_security,
/*
sign a packet
*/
NTSTATUS schannel_sign_packet(struct gensec_security *gensec_security,
TALLOC_CTX *mem_ctx,
const uint8_t *data, size_t length,
const uint8_t *whole_pdu, size_t pdu_length,
NTSTATUS schannel_sign_packet(struct gensec_security *gensec_security,
TALLOC_CTX *mem_ctx,
const uint8_t *data, size_t length,
const uint8_t *whole_pdu, size_t pdu_length,
DATA_BLOB *sig)
{
struct schannel_state *state = talloc_get_type(gensec_security->private_data, struct schannel_state);
@ -261,8 +261,8 @@ NTSTATUS schannel_sign_packet(struct gensec_security *gensec_security,
RSIVAL(seq_num, 0, state->seq_num);
SIVAL(seq_num, 4, state->initiator?0x80:0);
schannel_digest(state->creds->session_key,
netsec_sig, NULL,
schannel_digest(state->creds->session_key,
netsec_sig, NULL,
data, length, digest_final);
netsec_deal_with_seq_num(state, digest_final, seq_num);