#include "librpc/gen_ndr/dcerpc.h"
#include "param/param.h"
#include "auth/gensec/gensec_toplevel_proto.h"
+#include "lib/crypto/crypto.h"
+
+struct schannel_state {
+ uint64_t seq_num;
+ bool initiator;
+ struct netlogon_creds_CredentialState *creds;
+};
+
+#define SETUP_SEQNUM(state, buf, initiator) do { \
+ uint8_t *_buf = buf; \
+ uint32_t _seq_num_low = (state)->seq_num & UINT32_MAX; \
+ uint32_t _seq_num_high = (state)->seq_num >> 32; \
+ if (initiator) { \
+ _seq_num_high |= 0x80000000; \
+ } \
+ RSIVAL(_buf, 0, _seq_num_low); \
+ RSIVAL(_buf, 4, _seq_num_high); \
+} while(0)
+
+static struct schannel_state *netsec_create_state(TALLOC_CTX *mem_ctx,
+ struct netlogon_creds_CredentialState *creds,
+ bool initiator)
+{
+ struct schannel_state *state;
+
+ state = talloc(mem_ctx, struct schannel_state);
+ if (state == NULL) {
+ return NULL;
+ }
+
+ state->initiator = initiator;
+ state->seq_num = 0;
+ state->creds = netlogon_creds_copy(state, creds);
+ if (state->creds == NULL) {
+ talloc_free(state);
+ return NULL;
+ }
+
+ return state;
+}
+
+static void netsec_offset_and_sizes(struct schannel_state *state,
+ bool do_seal,
+ uint32_t *_min_sig_size,
+ uint32_t *_used_sig_size,
+ uint32_t *_checksum_length,
+ uint32_t *_confounder_ofs)
+{
+ uint32_t min_sig_size;
+ uint32_t used_sig_size;
+ uint32_t checksum_length;
+ uint32_t confounder_ofs;
+
+ if (state->creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
+ min_sig_size = 48;
+ used_sig_size = 56;
+ /*
+ * Note: windows has a bug here and uses the old values...
+ *
+ * checksum_length = 32;
+ * confounder_ofs = 48;
+ */
+ checksum_length = 8;
+ confounder_ofs = 24;
+ } else {
+ min_sig_size = 24;
+ used_sig_size = 32;
+ checksum_length = 8;
+ confounder_ofs = 24;
+ }
+
+ if (do_seal) {
+ min_sig_size += 8;
+ }
+
+ if (_min_sig_size) {
+ *_min_sig_size = min_sig_size;
+ }
+
+ if (_used_sig_size) {
+ *_used_sig_size = used_sig_size;
+ }
+
+ if (_checksum_length) {
+ *_checksum_length = checksum_length;
+ }
+
+ if (_confounder_ofs) {
+ *_confounder_ofs = confounder_ofs;
+ }
+}
+
+/*******************************************************************
+ Encode or Decode the sequence number (which is symmetric)
+ ********************************************************************/
+static void netsec_do_seq_num(struct schannel_state *state,
+ const uint8_t *checksum,
+ uint32_t checksum_length,
+ uint8_t seq_num[8])
+{
+ if (state->creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
+ AES_KEY key;
+ uint8_t iv[AES_BLOCK_SIZE];
+
+ AES_set_encrypt_key(state->creds->session_key, 128, &key);
+ ZERO_STRUCT(iv);
+ memcpy(iv+0, checksum, 8);
+ memcpy(iv+8, checksum, 8);
+
+ aes_cfb8_encrypt(seq_num, seq_num, 8, &key, iv, AES_ENCRYPT);
+ } else {
+ static const uint8_t zeros[4];
+ uint8_t sequence_key[16];
+ uint8_t digest1[16];
+
+ hmac_md5(state->creds->session_key, zeros, sizeof(zeros), digest1);
+ hmac_md5(digest1, checksum, checksum_length, sequence_key);
+ arcfour_crypt(seq_num, sequence_key, 8);
+ }
+
+ state->seq_num++;
+}
+
+static void netsec_do_seal(struct schannel_state *state,
+ const uint8_t seq_num[8],
+ uint8_t confounder[8],
+ uint8_t *data, uint32_t length,
+ bool forward)
+{
+ if (state->creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
+ AES_KEY key;
+ uint8_t iv[AES_BLOCK_SIZE];
+ uint8_t sess_kf0[16];
+ int i;
+
+ for (i = 0; i < 16; i++) {
+ sess_kf0[i] = state->creds->session_key[i] ^ 0xf0;
+ }
+
+ AES_set_encrypt_key(sess_kf0, 128, &key);
+ ZERO_STRUCT(iv);
+ memcpy(iv+0, seq_num, 8);
+ memcpy(iv+8, seq_num, 8);
+
+ if (forward) {
+ aes_cfb8_encrypt(confounder, confounder, 8, &key, iv, AES_ENCRYPT);
+ aes_cfb8_encrypt(data, data, length, &key, iv, AES_ENCRYPT);
+ } else {
+ aes_cfb8_encrypt(confounder, confounder, 8, &key, iv, AES_DECRYPT);
+ aes_cfb8_encrypt(data, data, length, &key, iv, AES_DECRYPT);
+ }
+ } else {
+ uint8_t sealing_key[16];
+ static const uint8_t zeros[4];
+ uint8_t digest2[16];
+ uint8_t sess_kf0[16];
+ int i;
+
+ for (i = 0; i < 16; i++) {
+ sess_kf0[i] = state->creds->session_key[i] ^ 0xf0;
+ }
+
+ hmac_md5(sess_kf0, zeros, 4, digest2);
+ hmac_md5(digest2, seq_num, 8, sealing_key);
+
+ arcfour_crypt(confounder, sealing_key, 8);
+ arcfour_crypt(data, sealing_key, length);
+ }
+}
+
+/*******************************************************************
+ Create a digest over the entire packet (including the data), and
+ MD5 it with the session key.
+ ********************************************************************/
+static void netsec_do_sign(struct schannel_state *state,
+ const uint8_t *confounder,
+ const uint8_t *data, size_t length,
+ uint8_t header[8],
+ uint8_t *checksum)
+{
+ if (state->creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
+ struct HMACSHA256Context ctx;
+
+ hmac_sha256_init(state->creds->session_key,
+ sizeof(state->creds->session_key),
+ &ctx);
+
+ if (confounder) {
+ SSVAL(header, 0, NL_SIGN_HMAC_SHA256);
+ SSVAL(header, 2, NL_SEAL_AES128);
+ SSVAL(header, 4, 0xFFFF);
+ SSVAL(header, 6, 0x0000);
+
+ hmac_sha256_update(header, 8, &ctx);
+ hmac_sha256_update(confounder, 8, &ctx);
+ } else {
+ SSVAL(header, 0, NL_SIGN_HMAC_SHA256);
+ SSVAL(header, 2, NL_SEAL_NONE);
+ SSVAL(header, 4, 0xFFFF);
+ SSVAL(header, 6, 0x0000);
+
+ hmac_sha256_update(header, 8, &ctx);
+ }
+
+ hmac_sha256_update(data, length, &ctx);
+
+ hmac_sha256_final(checksum, &ctx);
+ } else {
+ uint8_t packet_digest[16];
+ static const uint8_t zeros[4];
+ MD5_CTX ctx;
+
+ MD5Init(&ctx);
+ MD5Update(&ctx, zeros, 4);
+ if (confounder) {
+ SSVAL(header, 0, NL_SIGN_HMAC_MD5);
+ SSVAL(header, 2, NL_SEAL_RC4);
+ SSVAL(header, 4, 0xFFFF);
+ SSVAL(header, 6, 0x0000);
+
+ MD5Update(&ctx, header, 8);
+ MD5Update(&ctx, confounder, 8);
+ } else {
+ SSVAL(header, 0, NL_SIGN_HMAC_MD5);
+ SSVAL(header, 2, NL_SEAL_NONE);
+ SSVAL(header, 4, 0xFFFF);
+ SSVAL(header, 6, 0x0000);
+
+ MD5Update(&ctx, header, 8);
+ }
+ MD5Update(&ctx, data, length);
+ MD5Final(packet_digest, &ctx);
+
+ hmac_md5(state->creds->session_key,
+ packet_digest, sizeof(packet_digest),
+ checksum);
+ }
+}
+
+static NTSTATUS netsec_incoming_packet(struct schannel_state *state,
+ bool do_unseal,
+ uint8_t *data, size_t length,
+ const DATA_BLOB *sig)
+{
+ uint32_t min_sig_size = 0;
+ uint8_t header[8];
+ uint8_t checksum[32];
+ uint32_t checksum_length = sizeof(checksum_length);
+ uint8_t _confounder[8];
+ uint8_t *confounder = NULL;
+ uint32_t confounder_ofs = 0;
+ uint8_t seq_num[8];
+ int ret;
+
+ netsec_offset_and_sizes(state,
+ do_unseal,
+ &min_sig_size,
+ NULL,
+ &checksum_length,
+ &confounder_ofs);
+
+ if (sig->length < min_sig_size) {
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ if (do_unseal) {
+ confounder = _confounder;
+ memcpy(confounder, sig->data+confounder_ofs, 8);
+ } else {
+ confounder = NULL;
+ }
+
+ SETUP_SEQNUM(state, seq_num, !state->initiator);
+
+ if (do_unseal) {
+ netsec_do_seal(state, seq_num,
+ confounder,
+ data, length,
+ false);
+ }
+
+ netsec_do_sign(state, confounder,
+ data, length,
+ header, checksum);
+
+ ret = memcmp(checksum, sig->data+16, checksum_length);
+ if (ret != 0) {
+ dump_data_pw("calc digest:", checksum, checksum_length);
+ dump_data_pw("wire digest:", sig->data+16, checksum_length);
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ netsec_do_seq_num(state, checksum, checksum_length, seq_num);
+
+ ret = memcmp(seq_num, sig->data+8, 8);
+ if (ret != 0) {
+ dump_data_pw("calc seq num:", seq_num, 8);
+ dump_data_pw("wire seq num:", sig->data+8, 8);
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ return NT_STATUS_OK;
+}
+
+static uint32_t netsec_outgoing_sig_size(struct schannel_state *state)
+{
+ uint32_t sig_size = 0;
+
+ netsec_offset_and_sizes(state,
+ true,
+ NULL,
+ &sig_size,
+ NULL,
+ NULL);
+
+ return sig_size;
+}
+
+static NTSTATUS netsec_outgoing_packet(struct schannel_state *state,
+ TALLOC_CTX *mem_ctx,
+ bool do_seal,
+ uint8_t *data, size_t length,
+ DATA_BLOB *sig)
+{
+ uint32_t min_sig_size = 0;
+ uint32_t used_sig_size = 0;
+ uint8_t header[8];
+ uint8_t checksum[32];
+ uint32_t checksum_length = sizeof(checksum_length);
+ uint8_t _confounder[8];
+ uint8_t *confounder = NULL;
+ uint32_t confounder_ofs = 0;
+ uint8_t seq_num[8];
+
+ netsec_offset_and_sizes(state,
+ do_seal,
+ &min_sig_size,
+ &used_sig_size,
+ &checksum_length,
+ &confounder_ofs);
+
+ SETUP_SEQNUM(state, seq_num, state->initiator);
+
+ if (do_seal) {
+ confounder = _confounder;
+ generate_random_buffer(confounder, 8);
+ } else {
+ confounder = NULL;
+ }
+
+ netsec_do_sign(state, confounder,
+ data, length,
+ header, checksum);
+
+ if (do_seal) {
+ netsec_do_seal(state, seq_num,
+ confounder,
+ data, length,
+ true);
+ }
+
+ netsec_do_seq_num(state, checksum, checksum_length, seq_num);
+
+ (*sig) = data_blob_talloc_zero(mem_ctx, used_sig_size);
+
+ memcpy(sig->data, header, 8);
+ memcpy(sig->data+8, seq_num, 8);
+ memcpy(sig->data+16, checksum, checksum_length);
+
+ if (confounder) {
+ memcpy(sig->data+confounder_ofs, confounder, 8);
+ }
+
+ dump_data_pw("signature:", sig->data+ 0, 8);
+ dump_data_pw("seq_num :", sig->data+ 8, 8);
+ dump_data_pw("digest :", sig->data+16, checksum_length);
+ dump_data_pw("confound :", sig->data+confounder_ofs, 8);
+
+ return NT_STATUS_OK;
+}
_PUBLIC_ NTSTATUS gensec_schannel_init(void);
struct db_context *open_schannel_session_store(TALLOC_CTX *mem_ctx,
struct loadparm_context *lp_ctx);
-struct schannel_state *netsec_create_state(TALLOC_CTX *mem_ctx,
- struct netlogon_creds_CredentialState *creds,
- bool initiator);
-NTSTATUS netsec_incoming_packet(struct schannel_state *state,
- bool do_unseal,
- uint8_t *data, size_t length,
- const DATA_BLOB *sig);
-uint32_t netsec_outgoing_sig_size(struct schannel_state *state);
-NTSTATUS netsec_outgoing_packet(struct schannel_state *state,
- TALLOC_CTX *mem_ctx,
- bool do_seal,
- uint8_t *data, size_t length,
- DATA_BLOB *sig);
-
#endif
+++ /dev/null
-/*
- 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/>.
-*/
-
-#include "includes.h"
-#include "../libcli/auth/schannel.h"
-#include "../lib/crypto/crypto.h"
-
-struct schannel_state {
- uint64_t seq_num;
- bool initiator;
- struct netlogon_creds_CredentialState *creds;
-};
-
-#define SETUP_SEQNUM(state, buf, initiator) do { \
- uint8_t *_buf = buf; \
- uint32_t _seq_num_low = (state)->seq_num & UINT32_MAX; \
- uint32_t _seq_num_high = (state)->seq_num >> 32; \
- if (initiator) { \
- _seq_num_high |= 0x80000000; \
- } \
- RSIVAL(_buf, 0, _seq_num_low); \
- RSIVAL(_buf, 4, _seq_num_high); \
-} while(0)
-
-struct schannel_state *netsec_create_state(TALLOC_CTX *mem_ctx,
- struct netlogon_creds_CredentialState *creds,
- bool initiator)
-{
- struct schannel_state *state;
-
- state = talloc(mem_ctx, struct schannel_state);
- if (state == NULL) {
- return NULL;
- }
-
- state->initiator = initiator;
- state->seq_num = 0;
- state->creds = netlogon_creds_copy(state, creds);
- if (state->creds == NULL) {
- talloc_free(state);
- return NULL;
- }
-
- return state;
-}
-
-static void netsec_offset_and_sizes(struct schannel_state *state,
- bool do_seal,
- uint32_t *_min_sig_size,
- uint32_t *_used_sig_size,
- uint32_t *_checksum_length,
- uint32_t *_confounder_ofs)
-{
- uint32_t min_sig_size;
- uint32_t used_sig_size;
- uint32_t checksum_length;
- uint32_t confounder_ofs;
-
- if (state->creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
- min_sig_size = 48;
- used_sig_size = 56;
- /*
- * Note: windows has a bug here and uses the old values...
- *
- * checksum_length = 32;
- * confounder_ofs = 48;
- */
- checksum_length = 8;
- confounder_ofs = 24;
- } else {
- min_sig_size = 24;
- used_sig_size = 32;
- checksum_length = 8;
- confounder_ofs = 24;
- }
-
- if (do_seal) {
- min_sig_size += 8;
- }
-
- if (_min_sig_size) {
- *_min_sig_size = min_sig_size;
- }
-
- if (_used_sig_size) {
- *_used_sig_size = used_sig_size;
- }
-
- if (_checksum_length) {
- *_checksum_length = checksum_length;
- }
-
- if (_confounder_ofs) {
- *_confounder_ofs = confounder_ofs;
- }
-}
-
-/*******************************************************************
- Encode or Decode the sequence number (which is symmetric)
- ********************************************************************/
-static void netsec_do_seq_num(struct schannel_state *state,
- const uint8_t *checksum,
- uint32_t checksum_length,
- uint8_t seq_num[8])
-{
- if (state->creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
- AES_KEY key;
- uint8_t iv[AES_BLOCK_SIZE];
-
- AES_set_encrypt_key(state->creds->session_key, 128, &key);
- ZERO_STRUCT(iv);
- memcpy(iv+0, checksum, 8);
- memcpy(iv+8, checksum, 8);
-
- aes_cfb8_encrypt(seq_num, seq_num, 8, &key, iv, AES_ENCRYPT);
- } else {
- static const uint8_t zeros[4];
- uint8_t sequence_key[16];
- uint8_t digest1[16];
-
- hmac_md5(state->creds->session_key, zeros, sizeof(zeros), digest1);
- hmac_md5(digest1, checksum, checksum_length, sequence_key);
- arcfour_crypt(seq_num, sequence_key, 8);
- }
-
- state->seq_num++;
-}
-
-static void netsec_do_seal(struct schannel_state *state,
- const uint8_t seq_num[8],
- uint8_t confounder[8],
- uint8_t *data, uint32_t length,
- bool forward)
-{
- if (state->creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
- AES_KEY key;
- uint8_t iv[AES_BLOCK_SIZE];
- uint8_t sess_kf0[16];
- int i;
-
- for (i = 0; i < 16; i++) {
- sess_kf0[i] = state->creds->session_key[i] ^ 0xf0;
- }
-
- AES_set_encrypt_key(sess_kf0, 128, &key);
- ZERO_STRUCT(iv);
- memcpy(iv+0, seq_num, 8);
- memcpy(iv+8, seq_num, 8);
-
- if (forward) {
- aes_cfb8_encrypt(confounder, confounder, 8, &key, iv, AES_ENCRYPT);
- aes_cfb8_encrypt(data, data, length, &key, iv, AES_ENCRYPT);
- } else {
- aes_cfb8_encrypt(confounder, confounder, 8, &key, iv, AES_DECRYPT);
- aes_cfb8_encrypt(data, data, length, &key, iv, AES_DECRYPT);
- }
- } else {
- uint8_t sealing_key[16];
- static const uint8_t zeros[4];
- uint8_t digest2[16];
- uint8_t sess_kf0[16];
- int i;
-
- for (i = 0; i < 16; i++) {
- sess_kf0[i] = state->creds->session_key[i] ^ 0xf0;
- }
-
- hmac_md5(sess_kf0, zeros, 4, digest2);
- hmac_md5(digest2, seq_num, 8, sealing_key);
-
- arcfour_crypt(confounder, sealing_key, 8);
- arcfour_crypt(data, sealing_key, length);
- }
-}
-
-/*******************************************************************
- Create a digest over the entire packet (including the data), and
- MD5 it with the session key.
- ********************************************************************/
-static void netsec_do_sign(struct schannel_state *state,
- const uint8_t *confounder,
- const uint8_t *data, size_t length,
- uint8_t header[8],
- uint8_t *checksum)
-{
- if (state->creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
- struct HMACSHA256Context ctx;
-
- hmac_sha256_init(state->creds->session_key,
- sizeof(state->creds->session_key),
- &ctx);
-
- if (confounder) {
- SSVAL(header, 0, NL_SIGN_HMAC_SHA256);
- SSVAL(header, 2, NL_SEAL_AES128);
- SSVAL(header, 4, 0xFFFF);
- SSVAL(header, 6, 0x0000);
-
- hmac_sha256_update(header, 8, &ctx);
- hmac_sha256_update(confounder, 8, &ctx);
- } else {
- SSVAL(header, 0, NL_SIGN_HMAC_SHA256);
- SSVAL(header, 2, NL_SEAL_NONE);
- SSVAL(header, 4, 0xFFFF);
- SSVAL(header, 6, 0x0000);
-
- hmac_sha256_update(header, 8, &ctx);
- }
-
- hmac_sha256_update(data, length, &ctx);
-
- hmac_sha256_final(checksum, &ctx);
- } else {
- uint8_t packet_digest[16];
- static const uint8_t zeros[4];
- MD5_CTX ctx;
-
- MD5Init(&ctx);
- MD5Update(&ctx, zeros, 4);
- if (confounder) {
- SSVAL(header, 0, NL_SIGN_HMAC_MD5);
- SSVAL(header, 2, NL_SEAL_RC4);
- SSVAL(header, 4, 0xFFFF);
- SSVAL(header, 6, 0x0000);
-
- MD5Update(&ctx, header, 8);
- MD5Update(&ctx, confounder, 8);
- } else {
- SSVAL(header, 0, NL_SIGN_HMAC_MD5);
- SSVAL(header, 2, NL_SEAL_NONE);
- SSVAL(header, 4, 0xFFFF);
- SSVAL(header, 6, 0x0000);
-
- MD5Update(&ctx, header, 8);
- }
- MD5Update(&ctx, data, length);
- MD5Final(packet_digest, &ctx);
-
- hmac_md5(state->creds->session_key,
- packet_digest, sizeof(packet_digest),
- checksum);
- }
-}
-
-NTSTATUS netsec_incoming_packet(struct schannel_state *state,
- bool do_unseal,
- uint8_t *data, size_t length,
- const DATA_BLOB *sig)
-{
- uint32_t min_sig_size = 0;
- uint8_t header[8];
- uint8_t checksum[32];
- uint32_t checksum_length = sizeof(checksum_length);
- uint8_t _confounder[8];
- uint8_t *confounder = NULL;
- uint32_t confounder_ofs = 0;
- uint8_t seq_num[8];
- int ret;
-
- netsec_offset_and_sizes(state,
- do_unseal,
- &min_sig_size,
- NULL,
- &checksum_length,
- &confounder_ofs);
-
- if (sig->length < min_sig_size) {
- return NT_STATUS_ACCESS_DENIED;
- }
-
- if (do_unseal) {
- confounder = _confounder;
- memcpy(confounder, sig->data+confounder_ofs, 8);
- } else {
- confounder = NULL;
- }
-
- SETUP_SEQNUM(state, seq_num, !state->initiator);
-
- if (do_unseal) {
- netsec_do_seal(state, seq_num,
- confounder,
- data, length,
- false);
- }
-
- netsec_do_sign(state, confounder,
- data, length,
- header, checksum);
-
- ret = memcmp(checksum, sig->data+16, checksum_length);
- if (ret != 0) {
- dump_data_pw("calc digest:", checksum, checksum_length);
- dump_data_pw("wire digest:", sig->data+16, checksum_length);
- return NT_STATUS_ACCESS_DENIED;
- }
-
- netsec_do_seq_num(state, checksum, checksum_length, seq_num);
-
- ret = memcmp(seq_num, sig->data+8, 8);
- if (ret != 0) {
- dump_data_pw("calc seq num:", seq_num, 8);
- dump_data_pw("wire seq num:", sig->data+8, 8);
- return NT_STATUS_ACCESS_DENIED;
- }
-
- return NT_STATUS_OK;
-}
-
-uint32_t netsec_outgoing_sig_size(struct schannel_state *state)
-{
- uint32_t sig_size = 0;
-
- netsec_offset_and_sizes(state,
- true,
- NULL,
- &sig_size,
- NULL,
- NULL);
-
- return sig_size;
-}
-
-NTSTATUS netsec_outgoing_packet(struct schannel_state *state,
- TALLOC_CTX *mem_ctx,
- bool do_seal,
- uint8_t *data, size_t length,
- DATA_BLOB *sig)
-{
- uint32_t min_sig_size = 0;
- uint32_t used_sig_size = 0;
- uint8_t header[8];
- uint8_t checksum[32];
- uint32_t checksum_length = sizeof(checksum_length);
- uint8_t _confounder[8];
- uint8_t *confounder = NULL;
- uint32_t confounder_ofs = 0;
- uint8_t seq_num[8];
-
- netsec_offset_and_sizes(state,
- do_seal,
- &min_sig_size,
- &used_sig_size,
- &checksum_length,
- &confounder_ofs);
-
- SETUP_SEQNUM(state, seq_num, state->initiator);
-
- if (do_seal) {
- confounder = _confounder;
- generate_random_buffer(confounder, 8);
- } else {
- confounder = NULL;
- }
-
- netsec_do_sign(state, confounder,
- data, length,
- header, checksum);
-
- if (do_seal) {
- netsec_do_seal(state, seq_num,
- confounder,
- data, length,
- true);
- }
-
- netsec_do_seq_num(state, checksum, checksum_length, seq_num);
-
- (*sig) = data_blob_talloc_zero(mem_ctx, used_sig_size);
-
- memcpy(sig->data, header, 8);
- memcpy(sig->data+8, seq_num, 8);
- memcpy(sig->data+16, checksum, checksum_length);
-
- if (confounder) {
- memcpy(sig->data+confounder_ofs, confounder, 8);
- }
-
- dump_data_pw("signature:", sig->data+ 0, 8);
- dump_data_pw("seq_num :", sig->data+ 8, 8);
- dump_data_pw("digest :", sig->data+16, checksum_length);
- dump_data_pw("confound :", sig->data+confounder_ofs, 8);
-
- return NT_STATUS_OK;
-}
bld.SAMBA_SUBSYSTEM('COMMON_SCHANNEL',
- source='schannel_state_tdb.c schannel_sign.c',
+ source='schannel_state_tdb.c',
deps='dbwrap util_tdb samba-hostconfig NDR_NETLOGON'
)
git.samba.org / bbaumbach / samba-autobuild / .git / commitdiff