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/*
Unix SMB/CIFS implementation.
server side dcerpc authentication code - crypto support
Copyright (C) Andrew Tridgell 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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
this provides a crypto interface to the various backends (such as
NTLMSSP and SCHANNEL) for the rpc server code
*/
#include "includes.h"
/*
startup the cryptographic side of an authenticated dcerpc server
*/
NTSTATUS dcesrv_crypto_startup(struct dcesrv_connection *dce_conn,
struct dcesrv_auth *auth)
{
struct auth_ntlmssp_state *ntlmssp = NULL;
NTSTATUS status;
if (auth->auth_info->auth_level != DCERPC_AUTH_LEVEL_INTEGRITY &&
auth->auth_info->auth_level != DCERPC_AUTH_LEVEL_PRIVACY) {
DEBUG(2,("auth_level %d not supported in dcesrv auth\n",
auth->auth_info->auth_level));
return NT_STATUS_INVALID_PARAMETER;
}
switch (auth->auth_info->auth_type) {
/*
case DCERPC_AUTH_TYPE_SCHANNEL:
return auth_schannel_start();
*/
case DCERPC_AUTH_TYPE_NTLMSSP:
status = auth_ntlmssp_start(&ntlmssp);
auth->crypto_state = ntlmssp;
break;
default:
DEBUG(2,("dcesrv auth_type %d not supported\n", auth->auth_info->auth_type));
status = NT_STATUS_INVALID_PARAMETER;
}
DEBUG(4,("dcesrv_crypto_startup: %s\n", nt_errstr(status)));
return status;
}
/*
update crypto state
*/
NTSTATUS dcesrv_crypto_update(struct dcesrv_auth *auth,
TALLOC_CTX *out_mem_ctx,
const DATA_BLOB in, DATA_BLOB *out)
{
AUTH_NTLMSSP_STATE *ntlmssp = auth->crypto_state;
return ntlmssp_update(ntlmssp->ntlmssp_state, out_mem_ctx, in, out);
}
/*
seal a packet
*/
NTSTATUS dcesrv_crypto_seal(struct dcesrv_auth *auth,
TALLOC_CTX *sig_mem_ctx, uint8_t *data, size_t length, DATA_BLOB *sig)
{
AUTH_NTLMSSP_STATE *ntlmssp = auth->crypto_state;
return ntlmssp_seal_packet(ntlmssp->ntlmssp_state, sig_mem_ctx, data, length, sig);
}
/*
sign a packet
*/
NTSTATUS dcesrv_crypto_sign(struct dcesrv_auth *auth,
TALLOC_CTX *sig_mem_ctx, const uint8_t *data, size_t length, DATA_BLOB *sig)
{
AUTH_NTLMSSP_STATE *ntlmssp = auth->crypto_state;
return ntlmssp_sign_packet(ntlmssp->ntlmssp_state, sig_mem_ctx, data, length, sig);
}
/*
check a packet signature
*/
NTSTATUS dcesrv_crypto_check_sig(struct dcesrv_auth *auth,
TALLOC_CTX *sig_mem_ctx, const uint8_t *data, size_t length, const DATA_BLOB *sig)
{
AUTH_NTLMSSP_STATE *ntlmssp = auth->crypto_state;
return ntlmssp_check_packet(ntlmssp->ntlmssp_state, sig_mem_ctx, data, length, sig);
}
/*
unseal a packet
*/
NTSTATUS dcesrv_crypto_unseal(struct dcesrv_auth *auth,
TALLOC_CTX *sig_mem_ctx, uint8_t *data, size_t length, DATA_BLOB *sig)
{
AUTH_NTLMSSP_STATE *ntlmssp = auth->crypto_state;
return ntlmssp_unseal_packet(ntlmssp->ntlmssp_state, sig_mem_ctx, data, length, sig);
}
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