| /* Software-based Mobile Trusted Module (MTM) Emulator |
| * Copyright (C) 2004-2010 Mario Strasser <mast@gmx.net> |
| * |
| * This module 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 module 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. |
| * |
| * $Id$ |
| */ |
| |
| #include "mtm_handles.h" |
| #include "mtm_data.h" |
| |
| MTM_KEY_DATA *mtm_get_key_slot(TPM_VERIFICATION_KEY_HANDLE handle) |
| { |
| if (handle == TPM_INVALID_HANDLE) return NULL; |
| handle &= 0x00ffffff; |
| if (handle < TPM_MAX_KEYS) return NULL; |
| handle -= TPM_MAX_KEYS; |
| if (handle >= MTM_MAX_KEYS) return NULL; |
| return &mtmData.permanent.data.keys[handle]; |
| } |
| |
| MTM_KEY_DATA *mtm_get_key(TPM_VERIFICATION_KEY_HANDLE handle) |
| { |
| if (handle == TPM_INVALID_HANDLE |
| || (handle >> 24) != TPM_RT_KEY) return NULL; |
| handle &= 0x00ffffff; |
| if (handle < TPM_MAX_KEYS) return NULL; |
| handle -= TPM_MAX_KEYS; |
| if (handle >= MTM_MAX_KEYS |
| || !mtmData.permanent.data.keys[handle].valid) return NULL; |
| return &mtmData.permanent.data.keys[handle]; |
| } |
| |
| MTM_KEY_DATA *mtm_get_key_by_id(TPM_VERIFICATION_KEY_ID id) |
| { |
| int i; |
| for (i = 0; i < MTM_MAX_KEYS; i++) { |
| if (mtmData.permanent.data.keys[i].valid |
| && mtmData.permanent.data.keys[i].myId == id) |
| return &mtmData.permanent.data.keys[i]; |
| } |
| return NULL; |
| } |
| |