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-rw-r--r--source4/libcli/auth/credentials.c375
1 files changed, 0 insertions, 375 deletions
diff --git a/source4/libcli/auth/credentials.c b/source4/libcli/auth/credentials.c
deleted file mode 100644
index 3c77b0836d..0000000000
--- a/source4/libcli/auth/credentials.c
+++ /dev/null
@@ -1,375 +0,0 @@
-/*
- Unix SMB/CIFS implementation.
-
- code to manipulate domain credentials
-
- Copyright (C) Andrew Tridgell 1997-2003
- Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004
-
- 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 "system/time.h"
-#include "auth/auth.h"
-#include "../lib/crypto/crypto.h"
-#include "libcli/auth/libcli_auth.h"
-
-/*
- initialise the credentials state for old-style 64 bit session keys
-
- this call is made after the netr_ServerReqChallenge call
-*/
-static void creds_init_64bit(struct creds_CredentialState *creds,
- const struct netr_Credential *client_challenge,
- const struct netr_Credential *server_challenge,
- const struct samr_Password *machine_password)
-{
- uint32_t sum[2];
- uint8_t sum2[8];
-
- sum[0] = IVAL(client_challenge->data, 0) + IVAL(server_challenge->data, 0);
- sum[1] = IVAL(client_challenge->data, 4) + IVAL(server_challenge->data, 4);
-
- SIVAL(sum2,0,sum[0]);
- SIVAL(sum2,4,sum[1]);
-
- ZERO_STRUCT(creds->session_key);
-
- des_crypt128(creds->session_key, sum2, machine_password->hash);
-
- des_crypt112(creds->client.data, client_challenge->data, creds->session_key, 1);
- des_crypt112(creds->server.data, server_challenge->data, creds->session_key, 1);
-
- creds->seed = creds->client;
-}
-
-/*
- initialise the credentials state for ADS-style 128 bit session keys
-
- this call is made after the netr_ServerReqChallenge call
-*/
-static void creds_init_128bit(struct creds_CredentialState *creds,
- const struct netr_Credential *client_challenge,
- const struct netr_Credential *server_challenge,
- const struct samr_Password *machine_password)
-{
- unsigned char zero[4], tmp[16];
- HMACMD5Context ctx;
- struct MD5Context md5;
-
- ZERO_STRUCT(creds->session_key);
-
- memset(zero, 0, sizeof(zero));
-
- hmac_md5_init_rfc2104(machine_password->hash, sizeof(machine_password->hash), &ctx);
- MD5Init(&md5);
- MD5Update(&md5, zero, sizeof(zero));
- MD5Update(&md5, client_challenge->data, 8);
- MD5Update(&md5, server_challenge->data, 8);
- MD5Final(tmp, &md5);
- hmac_md5_update(tmp, sizeof(tmp), &ctx);
- hmac_md5_final(creds->session_key, &ctx);
-
- creds->client = *client_challenge;
- creds->server = *server_challenge;
-
- des_crypt112(creds->client.data, client_challenge->data, creds->session_key, 1);
- des_crypt112(creds->server.data, server_challenge->data, creds->session_key, 1);
-
- creds->seed = creds->client;
-}
-
-
-/*
- step the credentials to the next element in the chain, updating the
- current client and server credentials and the seed
-*/
-static void creds_step(struct creds_CredentialState *creds)
-{
- struct netr_Credential time_cred;
-
- DEBUG(5,("\tseed %08x:%08x\n",
- IVAL(creds->seed.data, 0), IVAL(creds->seed.data, 4)));
-
- SIVAL(time_cred.data, 0, IVAL(creds->seed.data, 0) + creds->sequence);
- SIVAL(time_cred.data, 4, IVAL(creds->seed.data, 4));
-
- DEBUG(5,("\tseed+time %08x:%08x\n", IVAL(time_cred.data, 0), IVAL(time_cred.data, 4)));
-
- des_crypt112(creds->client.data, time_cred.data, creds->session_key, 1);
-
- DEBUG(5,("\tCLIENT %08x:%08x\n",
- IVAL(creds->client.data, 0), IVAL(creds->client.data, 4)));
-
- SIVAL(time_cred.data, 0, IVAL(creds->seed.data, 0) + creds->sequence + 1);
- SIVAL(time_cred.data, 4, IVAL(creds->seed.data, 4));
-
- DEBUG(5,("\tseed+time+1 %08x:%08x\n",
- IVAL(time_cred.data, 0), IVAL(time_cred.data, 4)));
-
- des_crypt112(creds->server.data, time_cred.data, creds->session_key, 1);
-
- DEBUG(5,("\tSERVER %08x:%08x\n",
- IVAL(creds->server.data, 0), IVAL(creds->server.data, 4)));
-
- creds->seed = time_cred;
-}
-
-
-/*
- DES encrypt a 8 byte LMSessionKey buffer using the Netlogon session key
-*/
-void creds_des_encrypt_LMKey(struct creds_CredentialState *creds, struct netr_LMSessionKey *key)
-{
- struct netr_LMSessionKey tmp;
- des_crypt56(tmp.key, key->key, creds->session_key, 1);
- *key = tmp;
-}
-
-/*
- DES decrypt a 8 byte LMSessionKey buffer using the Netlogon session key
-*/
-void creds_des_decrypt_LMKey(struct creds_CredentialState *creds, struct netr_LMSessionKey *key)
-{
- struct netr_LMSessionKey tmp;
- des_crypt56(tmp.key, key->key, creds->session_key, 0);
- *key = tmp;
-}
-
-/*
- DES encrypt a 16 byte password buffer using the session key
-*/
-void creds_des_encrypt(struct creds_CredentialState *creds, struct samr_Password *pass)
-{
- struct samr_Password tmp;
- des_crypt112_16(tmp.hash, pass->hash, creds->session_key, 1);
- *pass = tmp;
-}
-
-/*
- DES decrypt a 16 byte password buffer using the session key
-*/
-void creds_des_decrypt(struct creds_CredentialState *creds, struct samr_Password *pass)
-{
- struct samr_Password tmp;
- des_crypt112_16(tmp.hash, pass->hash, creds->session_key, 0);
- *pass = tmp;
-}
-
-/*
- ARCFOUR encrypt/decrypt a password buffer using the session key
-*/
-void creds_arcfour_crypt(struct creds_CredentialState *creds, uint8_t *data, size_t len)
-{
- DATA_BLOB session_key = data_blob(creds->session_key, 16);
-
- arcfour_crypt_blob(data, len, &session_key);
-
- data_blob_free(&session_key);
-}
-
-/*****************************************************************
-The above functions are common to the client and server interface
-next comes the client specific functions
-******************************************************************/
-
-/*
- initialise the credentials chain and return the first client
- credentials
-*/
-void creds_client_init(struct creds_CredentialState *creds,
- const struct netr_Credential *client_challenge,
- const struct netr_Credential *server_challenge,
- const struct samr_Password *machine_password,
- struct netr_Credential *initial_credential,
- uint32_t negotiate_flags)
-{
- creds->sequence = time(NULL);
- creds->negotiate_flags = negotiate_flags;
-
- dump_data_pw("Client chall", client_challenge->data, sizeof(client_challenge->data));
- dump_data_pw("Server chall", server_challenge->data, sizeof(server_challenge->data));
- dump_data_pw("Machine Pass", machine_password->hash, sizeof(machine_password->hash));
-
- if (negotiate_flags & NETLOGON_NEG_128BIT) {
- creds_init_128bit(creds, client_challenge, server_challenge, machine_password);
- } else {
- creds_init_64bit(creds, client_challenge, server_challenge, machine_password);
- }
-
- dump_data_pw("Session key", creds->session_key, 16);
- dump_data_pw("Credential ", creds->client.data, 8);
-
- *initial_credential = creds->client;
-}
-
-/*
- step the credentials to the next element in the chain, updating the
- current client and server credentials and the seed
-
- produce the next authenticator in the sequence ready to send to
- the server
-*/
-void creds_client_authenticator(struct creds_CredentialState *creds,
- struct netr_Authenticator *next)
-{
- creds->sequence += 2;
- creds_step(creds);
-
- next->cred = creds->client;
- next->timestamp = creds->sequence;
-}
-
-/*
- check that a credentials reply from a server is correct
-*/
-bool creds_client_check(struct creds_CredentialState *creds,
- const struct netr_Credential *received_credentials)
-{
- if (!received_credentials ||
- memcmp(received_credentials->data, creds->server.data, 8) != 0) {
- DEBUG(2,("credentials check failed\n"));
- return false;
- }
- return true;
-}
-
-
-/*****************************************************************
-The above functions are common to the client and server interface
-next comes the server specific functions
-******************************************************************/
-
-/*
- initialise the credentials chain and return the first server
- credentials
-*/
-void creds_server_init(struct creds_CredentialState *creds,
- const struct netr_Credential *client_challenge,
- const struct netr_Credential *server_challenge,
- const struct samr_Password *machine_password,
- struct netr_Credential *initial_credential,
- uint32_t negotiate_flags)
-{
- if (negotiate_flags & NETLOGON_NEG_128BIT) {
- creds_init_128bit(creds, client_challenge, server_challenge,
- machine_password);
- } else {
- creds_init_64bit(creds, client_challenge, server_challenge,
- machine_password);
- }
-
- *initial_credential = creds->server;
- creds->negotiate_flags = negotiate_flags;
-}
-
-/*
- check that a credentials reply from a server is correct
-*/
-bool creds_server_check(const struct creds_CredentialState *creds,
- const struct netr_Credential *received_credentials)
-{
- if (memcmp(received_credentials->data, creds->client.data, 8) != 0) {
- DEBUG(2,("credentials check failed\n"));
- dump_data_pw("client creds", creds->client.data, 8);
- dump_data_pw("calc creds", received_credentials->data, 8);
- return false;
- }
- return true;
-}
-
-NTSTATUS creds_server_step_check(struct creds_CredentialState *creds,
- struct netr_Authenticator *received_authenticator,
- struct netr_Authenticator *return_authenticator)
-{
- if (!received_authenticator || !return_authenticator) {
- return NT_STATUS_INVALID_PARAMETER;
- }
-
- if (!creds) {
- return NT_STATUS_ACCESS_DENIED;
- }
-
- /* TODO: this may allow the a replay attack on a non-signed
- connection. Should we check that this is increasing? */
- creds->sequence = received_authenticator->timestamp;
- creds_step(creds);
- if (creds_server_check(creds, &received_authenticator->cred)) {
- return_authenticator->cred = creds->server;
- return_authenticator->timestamp = creds->sequence;
- return NT_STATUS_OK;
- } else {
- ZERO_STRUCTP(return_authenticator);
- return NT_STATUS_ACCESS_DENIED;
- }
-}
-
-void creds_decrypt_samlogon(struct creds_CredentialState *creds,
- uint16_t validation_level,
- union netr_Validation *validation)
-{
- static const char zeros[16];
-
- struct netr_SamBaseInfo *base = NULL;
- switch (validation_level) {
- case 2:
- if (validation->sam2) {
- base = &validation->sam2->base;
- }
- break;
- case 3:
- if (validation->sam3) {
- base = &validation->sam3->base;
- }
- break;
- case 6:
- if (validation->sam6) {
- base = &validation->sam6->base;
- }
- break;
- default:
- /* If we can't find it, we can't very well decrypt it */
- return;
- }
-
- if (!base) {
- return;
- }
-
- /* find and decyrpt the session keys, return in parameters above */
- if (validation_level == 6) {
- /* they aren't encrypted! */
- } else if (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR) {
- if (memcmp(base->key.key, zeros,
- sizeof(base->key.key)) != 0) {
- creds_arcfour_crypt(creds,
- base->key.key,
- sizeof(base->key.key));
- }
-
- if (memcmp(base->LMSessKey.key, zeros,
- sizeof(base->LMSessKey.key)) != 0) {
- creds_arcfour_crypt(creds,
- base->LMSessKey.key,
- sizeof(base->LMSessKey.key));
- }
- } else {
- if (memcmp(base->LMSessKey.key, zeros,
- sizeof(base->LMSessKey.key)) != 0) {
- creds_des_decrypt_LMKey(creds,
- &base->LMSessKey);
- }
- }
-}
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