HCOSE_MAC0 COSE_Mac0_Init(CBOR_CONTEXT_COMMA cose_errback * perr)
{
COSE_Mac0Message * pobj = (COSE_Mac0Message *)COSE_CALLOC(1, sizeof(COSE_Mac0Message), context);
CHECK_CONDITION(pobj != NULL, COSE_ERR_OUT_OF_MEMORY);
if (!_COSE_Init(&pobj->m_message, COSE_mac0_object, CBOR_CONTEXT_PARAM_COMMA perr)) {
goto errorReturn;
}
return (HCOSE_MAC0)pobj;
errorReturn:
if (pobj != NULL) COSE_Mac0_Free((HCOSE_MAC0)pobj);
return NULL;
}
HCOSE_ENCRYPT COSE_Encrypt_Init(CBOR_CONTEXT_COMMA cose_errback * perror)
{
COSE_Encrypt * pobj = (COSE_Encrypt *)COSE_CALLOC(1, sizeof(COSE_Encrypt), context);
if (pobj == NULL) {
if (perror != NULL) perror->err = COSE_ERR_OUT_OF_MEMORY;
return NULL;
}
if (!_COSE_Init(&pobj->m_message, COSE_enveloped_object, CBOR_CONTEXT_PARAM_COMMA perror)) {
COSE_Encrypt_Free((HCOSE_ENCRYPT)pobj);
return NULL;
}
_COSE_InsertInList(&EncryptRoot, &pobj->m_message);
return (HCOSE_ENCRYPT) pobj;
}
/*!
* @brief Allocate and initialize an object for creation of an Enveloped message object
*
* Allocate and initialize the object used to create a COSE Enveloped message object.
* Supported flags are:
* COSE_INIT_FLAG_DETACHED_CONTENT - content is not part of the message
* COSE_INIT_NO_CBOR_FLAG - Do not emit the leading CBOR tag on the message.
*
* See the notes on the memory model for the use of the context variable.
* Applications need to free the returned handle before deallocating the
* memory block that it was wrapped in for correct handle checking.
*
* @param flags Set of initialization flags from the COSE_INIT_FLAGS enum
* @param context CN_CBOR context allocator struture
* @param perr Location to return error specific information
* @returns handle to the newly allocated object
*/
HCOSE_ENVELOPED COSE_Enveloped_Init(COSE_INIT_FLAGS flags, CBOR_CONTEXT_COMMA cose_errback * perr)
{
COSE_Enveloped * pobj = (COSE_Enveloped *)COSE_CALLOC(1, sizeof(COSE_Enveloped), context);
CHECK_CONDITION(pobj != NULL, COSE_ERR_OUT_OF_MEMORY);
if (!_COSE_Init(flags,&pobj->m_message, COSE_enveloped_object, CBOR_CONTEXT_PARAM_COMMA perr)) {
_COSE_Enveloped_Release(pobj);
COSE_FREE(pobj, context);
return NULL;
}
_COSE_InsertInList(&EnvelopedRoot, &pobj->m_message);
return (HCOSE_ENVELOPED) pobj;
errorReturn:
return NULL;
}
HCOSE_ENCRYPT COSE_Encrypt_Init(COSE_INIT_FLAGS flags, CBOR_CONTEXT_COMMA cose_errback * perr)
{
CHECK_CONDITION(flags == COSE_INIT_FLAGS_NONE, COSE_ERR_INVALID_PARAMETER);
COSE_Encrypt * pobj = (COSE_Encrypt *)COSE_CALLOC(1, sizeof(COSE_Encrypt), context);
CHECK_CONDITION(pobj != NULL, COSE_ERR_OUT_OF_MEMORY);
if (!_COSE_Init(flags, &pobj->m_message, COSE_enveloped_object, CBOR_CONTEXT_PARAM_COMMA perr)) {
_COSE_Encrypt_Release(pobj);
COSE_FREE(pobj, context);
return NULL;
}
_COSE_InsertInList(&EncryptRoot, &pobj->m_message);
return (HCOSE_ENCRYPT) pobj;
errorReturn:
return NULL;
}
HCOSE_RECIPIENT COSE_Mac_add_shared_secret(HCOSE_MAC hcose, COSE_Algorithms alg, byte * rgbKey, int cbKey, byte * rgbKid, int cbKid, cose_errback * perr)
{
#ifdef USE_CBOR_CONTEXT
cn_cbor_context * context = NULL;
#endif // USE_CBOR_CONTEXT
COSE_RecipientInfo * pobj;
COSE_MacMessage * pcose = (COSE_MacMessage *)hcose;
cn_cbor * cn_Temp = NULL;
cn_cbor * pRecipients = NULL;
cn_cbor * pRecipientsNew = NULL;
byte * pbKey = NULL;
byte * pbTemp = NULL;
cn_cbor * cnTemp = NULL;
cn_cbor_errback cbor_error;
CHECK_CONDITION(IsValidMacHandle(hcose) && (rgbKey != NULL), COSE_ERR_INVALID_PARAMETER);
#ifdef USE_CBOR_CONTEXT
context = &pcose->m_message.m_allocContext;
#endif // USE_CBOR_CONTEXT
switch (alg) {
case COSE_Algorithm_Direct:
break;
default:
FAIL_CONDITION(COSE_ERR_INVALID_PARAMETER);
}
pobj = (COSE_RecipientInfo *)COSE_CALLOC(1, sizeof(COSE_RecipientInfo), context);
CHECK_CONDITION(pobj != NULL, COSE_ERR_OUT_OF_MEMORY);
if (!_COSE_Init(&pobj->m_encrypt.m_message, COSE_unknown_object, CBOR_CONTEXT_PARAM_COMMA perr)) {
goto errorReturn;
}
cn_Temp = cn_cbor_int_create(alg, CBOR_CONTEXT_PARAM_COMMA &cbor_error);
CHECK_CONDITION_CBOR(cn_Temp != NULL, cbor_error);
CHECK_CONDITION_CBOR(cn_cbor_mapput_int(pobj->m_encrypt.m_message.m_unprotectMap, COSE_Header_Algorithm, cn_Temp, CBOR_CONTEXT_PARAM_COMMA &cbor_error), cbor_error);
cn_Temp = NULL;
if (cbKid > 0) {
pbTemp = (byte *)COSE_CALLOC(cbKid, 1, context);
CHECK_CONDITION(pbTemp != NULL, COSE_ERR_OUT_OF_MEMORY);
memcpy(pbTemp, rgbKid, cbKid);
cnTemp = cn_cbor_data_create(pbTemp, cbKid, CBOR_CONTEXT_PARAM_COMMA &cbor_error);
CHECK_CONDITION_CBOR(cnTemp != NULL, cbor_error);
pbTemp = NULL;
CHECK_CONDITION_CBOR(cn_cbor_mapput_int(pobj->m_encrypt.m_message.m_unprotectMap, COSE_Header_KID, cnTemp, CBOR_CONTEXT_PARAM_COMMA &cbor_error), cbor_error);
}
pobj->m_encrypt.pbKey = pbKey = (byte *)COSE_CALLOC(cbKey, 1, context);
CHECK_CONDITION(pobj->m_encrypt.pbKey != NULL, COSE_ERR_OUT_OF_MEMORY);
memcpy(pbKey, rgbKey, cbKey);
pobj->m_encrypt.cbKey = cbKey;
pobj->m_recipientNext = pcose->m_recipientFirst;
pcose->m_recipientFirst = pobj;
pRecipients = _COSE_arrayget_int(&pcose->m_message, INDEX_MAC_RECIPIENTS);
if (pRecipients == NULL) {
pRecipients = pRecipientsNew = cn_cbor_array_create(CBOR_CONTEXT_PARAM_COMMA &cbor_error);
CHECK_CONDITION_CBOR(pRecipients != NULL, cbor_error);
pRecipientsNew = NULL;
CHECK_CONDITION_CBOR(_COSE_array_replace(&pcose->m_message, pRecipients, INDEX_MAC_RECIPIENTS, CBOR_CONTEXT_PARAM_COMMA &cbor_error), cbor_error);
}
CHECK_CONDITION_CBOR(cn_cbor_array_append(pRecipients, pobj->m_encrypt.m_message.m_cbor, &cbor_error), cbor_error);
pobj->m_encrypt.m_message.m_flags |= 1;
return (HCOSE_RECIPIENT)pobj;
errorReturn:
if (cn_Temp != NULL) CN_CBOR_FREE(cn_Temp, context);
if (pRecipientsNew != NULL) CN_CBOR_FREE(pRecipientsNew, context);
// if (pobj != NULL) COSE_Recipient_Free(pobj);
return NULL;
}
