| /** \file MacMessage0.c |
| * Contains implementation of the functions related to HCOSE_MAC0 handle |
| * objects. |
| */ |
| |
| #include <stdlib.h> |
| #ifndef __MBED__ |
| #include <memory.h> |
| #endif |
| #include <stdio.h> |
| #include <assert.h> |
| #include <string.h> |
| |
| #include "cose/cose.h" |
| #include "cose_int.h" |
| #include "cose/cose_configure.h" |
| #include "crypto.h" |
| |
| #if INCLUDE_MAC0 |
| |
| static COSE *Mac0Root = NULL; |
| |
| /*! \private |
| * @brief Test if a HCOSE_MAC0 handle is valid |
| * |
| * Internal function to test if a MAC0 message handle is valid. |
| * This will start returning invalid results and cause the code to |
| * crash if handles are not released before the memory that underlies them |
| * is deallocated. This is an issue of a block allocator is used since |
| * in that case it is common to allocate memory but never to de-allocate it |
| * and just do that in a single big block. |
| * |
| * @param h handle to be validated |
| * @returns result of check |
| */ |
| |
| bool IsValidMac0Handle(HCOSE_MAC0 h) |
| { |
| COSE_Mac0Message *p = (COSE_Mac0Message *)h; |
| return _COSE_IsInList(Mac0Root, (COSE *)p); |
| } |
| |
| HCOSE_MAC0 COSE_Mac0_Init(COSE_INIT_FLAGS flags, |
| CBOR_CONTEXT_COMMA cose_errback *perr) |
| { |
| COSE_Mac0Message *pobj = NULL; |
| |
| CHECK_CONDITION(flags == COSE_INIT_FLAGS_NONE, COSE_ERR_INVALID_PARAMETER); |
| |
| pobj = |
| (COSE_Mac0Message *)COSE_CALLOC(1, sizeof(COSE_Mac0Message), context); |
| CHECK_CONDITION(pobj != NULL, COSE_ERR_OUT_OF_MEMORY); |
| |
| if (!_COSE_Init(flags, &pobj->m_message, COSE_mac0_object, |
| CBOR_CONTEXT_PARAM_COMMA perr)) { |
| goto errorReturn; |
| } |
| |
| _COSE_InsertInList(&Mac0Root, &pobj->m_message); |
| |
| return (HCOSE_MAC0)pobj; |
| |
| errorReturn: |
| if (pobj != NULL) { |
| _COSE_Mac0_Release(pobj); |
| COSE_FREE(pobj, context); |
| } |
| return NULL; |
| } |
| |
| HCOSE_MAC0 _COSE_Mac0_Init_From_Object(cn_cbor *cbor, |
| COSE_Mac0Message *pIn, |
| CBOR_CONTEXT_COMMA cose_errback *perr) |
| { |
| COSE_Mac0Message *pobj = pIn; |
| cn_cbor *pRecipients = NULL; |
| // cn_cbor * tmp; |
| cose_errback error = {COSE_ERR_NONE}; |
| if (perr == NULL) |
| perr = &error; |
| |
| if (pobj == NULL) |
| pobj = (COSE_Mac0Message *)COSE_CALLOC( |
| 1, sizeof(COSE_Mac0Message), context); |
| if (pobj == NULL) { |
| perr->err = COSE_ERR_OUT_OF_MEMORY; |
| errorReturn: |
| if (pobj != NULL) { |
| _COSE_Mac0_Release(pobj); |
| if (pIn == NULL) { |
| COSE_FREE(pobj, context); |
| } |
| } |
| return NULL; |
| } |
| |
| if (!_COSE_Init_From_Object( |
| &pobj->m_message, cbor, CBOR_CONTEXT_PARAM_COMMA perr)) { |
| goto errorReturn; |
| } |
| |
| pRecipients = _COSE_arrayget_int(&pobj->m_message, INDEX_MAC_RECIPIENTS); |
| CHECK_CONDITION(pRecipients == NULL, COSE_ERR_INVALID_PARAMETER); |
| |
| _COSE_InsertInList(&Mac0Root, &pobj->m_message); |
| |
| return (HCOSE_MAC0)pobj; |
| } |
| |
| bool COSE_Mac0_Free(HCOSE_MAC0 h) |
| { |
| #ifdef USE_CBOR_CONTEXT |
| cn_cbor_context *context; |
| #endif |
| COSE_Mac0Message *p = (COSE_Mac0Message *)h; |
| |
| if (!IsValidMac0Handle(h)) |
| return false; |
| |
| if (p->m_message.m_refCount > 1) { |
| p->m_message.m_refCount--; |
| return true; |
| } |
| |
| _COSE_RemoveFromList(&Mac0Root, &p->m_message); |
| |
| #ifdef USE_CBOR_CONTEXT |
| context = &p->m_message.m_allocContext; |
| #endif |
| |
| _COSE_Mac0_Release(p); |
| |
| COSE_FREE(p, context); |
| |
| return true; |
| } |
| |
| bool _COSE_Mac0_Release(COSE_Mac0Message *p) |
| { |
| _COSE_Release(&p->m_message); |
| |
| return true; |
| } |
| |
| bool COSE_Mac0_SetContent(HCOSE_MAC0 cose, |
| const byte *rgbContent, |
| size_t cbContent, |
| cose_errback *perr) |
| { |
| COSE_Mac0Message *p = (COSE_Mac0Message *)cose; |
| #ifdef USE_CBOR_CONTEXT |
| cn_cbor_context *context = &p->m_message.m_allocContext; |
| #endif |
| cn_cbor *ptmp = NULL; |
| cn_cbor_errback cbor_error; |
| |
| CHECK_CONDITION(IsValidMac0Handle(cose), COSE_ERR_INVALID_PARAMETER); |
| |
| ptmp = cn_cbor_data_create( |
| rgbContent, (int)cbContent, CBOR_CONTEXT_PARAM_COMMA & cbor_error); |
| CHECK_CONDITION_CBOR(ptmp != NULL, cbor_error); |
| |
| CHECK_CONDITION_CBOR(_COSE_array_replace(&p->m_message, ptmp, INDEX_BODY, |
| CBOR_CONTEXT_PARAM_COMMA & cbor_error), |
| cbor_error); |
| ptmp = NULL; |
| |
| return true; |
| |
| errorReturn: |
| if (ptmp != NULL) |
| CN_CBOR_FREE(ptmp, context); |
| return false; |
| } |
| |
| /*! |
| * @brief Set the application external data for authentication |
| * |
| * MAC data objects support the authentication of external application |
| * supplied data. This function is provided to supply that data to the library. |
| * |
| * The external data is not copied, nor will be it freed when the handle is |
| * released. |
| * |
| * @param hcose Handle for the COSE MAC data object |
| * @param pbEternalData point to the external data |
| * @param cbExternalData size of the external data |
| * @param perr location to return errors |
| * @return result of the operation. |
| */ |
| |
| bool COSE_Mac0_SetExternal(HCOSE_MAC0 hcose, |
| const byte *pbExternalData, |
| size_t cbExternalData, |
| cose_errback *perr) |
| { |
| if (!IsValidMac0Handle(hcose)) { |
| if (perr != NULL) |
| perr->err = COSE_ERR_INVALID_PARAMETER; |
| return false; |
| } |
| |
| return _COSE_SetExternal(&((COSE_Mac0Message *)hcose)->m_message, |
| pbExternalData, cbExternalData, perr); |
| } |
| |
| cn_cbor *COSE_Mac0_map_get_int(HCOSE_MAC0 h, |
| int key, |
| int flags, |
| cose_errback *perror) |
| { |
| if (!IsValidMac0Handle(h)) { |
| if (perror != NULL) |
| perror->err = COSE_ERR_INVALID_PARAMETER; |
| return NULL; |
| } |
| |
| return _COSE_map_get_int( |
| &((COSE_Mac0Message *)h)->m_message, key, flags, perror); |
| } |
| |
| bool COSE_Mac0_map_put_int(HCOSE_MAC0 h, |
| int key, |
| cn_cbor *value, |
| int flags, |
| cose_errback *perror) |
| { |
| if (!IsValidMac0Handle(h) || (value == NULL)) { |
| if (perror != NULL) |
| perror->err = COSE_ERR_INVALID_PARAMETER; |
| return false; |
| } |
| |
| return _COSE_map_put( |
| &((COSE_Mac0Message *)h)->m_message, key, value, flags, perror); |
| } |
| |
| bool COSE_Mac0_encrypt(HCOSE_MAC0 h, |
| const byte *pbKey, |
| size_t cbKey, |
| cose_errback *perr) |
| { |
| COSE_Mac0Message *pcose = (COSE_Mac0Message *)h; |
| |
| CHECK_CONDITION(IsValidMac0Handle(h), COSE_ERR_INVALID_HANDLE); |
| CHECK_CONDITION(pbKey != NULL, COSE_ERR_INVALID_PARAMETER); |
| |
| return _COSE_Mac_compute(pcose, pbKey, cbKey, "MAC0", perr); |
| |
| errorReturn: |
| return false; |
| } |
| |
| bool COSE_Mac0_validate(HCOSE_MAC0 h, |
| const byte *pbKey, |
| size_t cbKey, |
| cose_errback *perr) |
| { |
| COSE_Mac0Message *pcose = (COSE_Mac0Message *)h; |
| CHECK_CONDITION(IsValidMac0Handle(h), COSE_ERR_INVALID_HANDLE); |
| CHECK_CONDITION(pbKey != NULL, COSE_ERR_INVALID_PARAMETER); |
| |
| return _COSE_Mac_validate(pcose, NULL, pbKey, cbKey, "MAC0", perr); |
| |
| errorReturn: |
| return false; |
| } |
| |
| #endif |