/**
* This function process a block of data via the HASH Hardware.
* The function receives as input an handle to the HASH Context , that was initialized before
* by an CRYS_HASH_Init function or by other CRYS_HASH_Update
* function. The function Sets the hardware with the last H's
* value that where stored in the CRYS HASH context and then
* process the data block using the hardware and in the end of
* the process stores in the HASH context the H's value HASH
* Context with the cryptographic attributes that are needed for
* the HASH block operation ( initialize H's value for the HASH
* algorithm ). This function is used in cases not all the data
* is arrange in one continues buffer.
*
* The function flow:
*
* 1) checking the parameters validty if there is an error the function shall exit with an error code.
* 2) Aquiring the working context from the CCM manager.
* 3) If there isnt enouth data in the previous update data buff in the context plus the received data
* load it to the context buffer and exit the function.
* 4) fill the previous update data buffer to contain an entire block.
* 5) Calling the hardware low level function to execute the update.
* 6) fill the previous update data buffer with the data not processed at the end of the received data.
* 7) release the CCM context.
*
* @param[in] ContextID_ptr - a pointer to the HASH context buffer allocated by the user that
* is used for the HASH machine operation.
*
* @param DataIn_ptr a pointer to the buffer that stores the data to be
* hashed .
*
* @param DataInSize The size of the data to be hashed in bytes.
*
* @return CRYSError_t on success the function returns CRYS_OK else non ZERO error.
*
*/
CEXPORT_C CRYSError_t CRYS_HASH_Update(CRYS_HASHUserContext_t* ContextID_ptr,
DxUint8_t* DataIn_ptr,
DxUint32_t DataInSize )
{
struct sep_ctx_hash *pHashContext;
CRYS_HASHPrivateContext_t *pHashPrivContext;
int symRc = DX_RET_OK;
int hash_block_size_in_bytes = 0;
if ( ContextID_ptr == DX_NULL ) {
return CRYS_HASH_INVALID_USER_CONTEXT_POINTER_ERROR;
}
if( DataInSize == 0 ) {
return CRYS_OK;
}
if( DataIn_ptr == DX_NULL ) {
return CRYS_HASH_DATA_IN_POINTER_INVALID_ERROR;
}
// PRINT_INFO("--->NOW enter into CRYS_HASH_Update\n");
/* check validity for priv */
if (DxCcAcl_IsBuffAccessOk(ACCESS_READ_WRITE, ContextID_ptr, sizeof(CRYS_HASHUserContext_t))) {
return CRYS_HASH_ILLEGAL_PARAMS_ERROR;
}
/* Get pointer to contiguous context in the HOST buffer */
pHashContext = (struct sep_ctx_hash *)DX_GetUserCtxLocation(ContextID_ptr->buff);
pHashPrivContext = (CRYS_HASHPrivateContext_t *)&(((uint32_t*)pHashContext)[CRYS_HASH_USER_CTX_ACTUAL_SIZE_IN_WORDS-1]);
if (pHashPrivContext->isLastBlockProcessed != 0) {
return CRYS_HASH_LAST_BLOCK_ALREADY_PROCESSED_ERROR;
}
if (pHashContext->mode < SEP_HASH_SHA512)
hash_block_size_in_bytes = CRYS_HASH_BLOCK_SIZE_IN_BYTES;
else
hash_block_size_in_bytes = CRYS_HASH_SHA512_BLOCK_SIZE_IN_BYTES;
if ((DataInSize % hash_block_size_in_bytes) == 0) {
symRc = SymDriverAdaptorProcess((struct sep_ctx_generic *)pHashContext,
DataIn_ptr, NULL, DataInSize);
if (symRc != DX_RET_OK) {
return DX_CRYS_RETURN_ERROR(symRc, 0, SymAdaptor2CrysHashErr);
}
} else { /* this is the last block */
pHashPrivContext->isLastBlockProcessed = 1;
symRc = SymDriverAdaptorFinalize((struct sep_ctx_generic *)pHashContext,
DataIn_ptr, NULL, DataInSize);
if (symRc != DX_RET_OK) {
return DX_CRYS_RETURN_ERROR(symRc, 0, SymAdaptor2CrysHashErr);
}
}
//PRINT_INFO("--->NOW leave CRYS_HASH_Update\n");
return CRYS_OK;
}
CIMPORT_C CRYSError_t CRYS_HMAC_Update(CRYS_HMACUserContext_t *ContextID_ptr,
DxUint8_t *DataIn_ptr,
DxUint32_t DataInSize )
{
struct sep_ctx_hmac *pHmacContext;
CRYS_HMACPrivateContext_t *pHmacPrivContext;
int symRc = DX_RET_OK;
uint32_t blockSizeBytes;
/* if the users context ID pointer is DX_NULL return an error */
if( ContextID_ptr == DX_NULL ) {
return CRYS_HMAC_INVALID_USER_CONTEXT_POINTER_ERROR;
}
/* if the users Data In pointer is illegal and the size is not 0 return an error */
if( (DataIn_ptr == DX_NULL) && DataInSize ) {
return CRYS_HMAC_DATA_IN_POINTER_INVALID_ERROR;
}
/* if the data size is zero no need to execute an update , return CRYS_OK */
if( DataInSize == 0 ) {
return CRYS_OK;
}
/* check validity for priv */
if (DxCcAcl_IsBuffAccessOk(ACCESS_READ_WRITE, ContextID_ptr, sizeof(CRYS_HMACUserContext_t))) {
return CRYS_HMAC_ILLEGAL_PARAMS_ERROR;
}
/* Get pointer to contiguous context in the HOST buffer */
pHmacContext = (struct sep_ctx_hmac *)DX_GetUserCtxLocation(ContextID_ptr->buff);
pHmacPrivContext = (CRYS_HMACPrivateContext_t *)&(((uint32_t*)pHmacContext)[CRYS_HMAC_USER_CTX_ACTUAL_SIZE_IN_WORDS-1]);
if (pHmacPrivContext->isLastBlockProcessed != 0) {
return CRYS_HMAC_LAST_BLOCK_ALREADY_PROCESSED_ERROR;
}
blockSizeBytes = GetHmacBlocktSize(pHmacContext->mode);
if ((DataInSize % blockSizeBytes) == 0) {
symRc = SymDriverAdaptorProcess((struct sep_ctx_generic *)pHmacContext,
DataIn_ptr, NULL, DataInSize);
if (symRc != DX_RET_OK) {
return DX_CRYS_RETURN_ERROR(symRc, 0, SymAdaptor2CrysHmacErr);
}
} else { /* this is the last block */
pHmacPrivContext->isLastBlockProcessed = 1;
symRc = SymDriverAdaptorFinalize((struct sep_ctx_generic *)pHmacContext,
DataIn_ptr, NULL, DataInSize);
if (symRc != DX_RET_OK) {
return DX_CRYS_RETURN_ERROR(symRc, 0, SymAdaptor2CrysHmacErr);
}
}
return CRYS_OK;
}
/**
* @brief This function is used to process a stream on the RC4 machine.
* This function should be called after the CRYS_RS4_Init.
*
*
* @param[in] ContextID_ptr - A pointer to the RC4 context buffer allocated by the user
* that is used for the RC4 machine operation. This should be the
* same context as was used for the previous call of this session.
*
* @param[in] DataIn_ptr - The pointer to the buffer of the input data to the RC4.
* The pointer's value does not need to be word-aligned.
*
* @param[in] DataInSize - The size of the input data.
*
* @param[in,out] DataOut_ptr - The pointer to the buffer of the output data from the RC4.
* The pointer's value does not need to be word-aligned.
*
* @return CRYSError_t - CRYS_OK,
* CRYS_RC4_INVALID_USER_CONTEXT_POINTER_ERROR,
* CRYS_RC4_ILLEGAL_KEY_SIZE_ERROR,
* CRYS_RC4_INVALID_KEY_POINTER_ERROR
*/
CIMPORT_C CRYSError_t CRYS_RC4_Stream(CRYS_RC4UserContext_t *ContextID_ptr,
DxUint8_t *DataIn_ptr,
DxUint32_t DataInSize,
DxUint8_t *DataOut_ptr)
{
int symRc = DX_RET_OK;
/* pointer on SEP RC4 context struct*/
struct sep_ctx_rc4 *pRc4Context;
/* ............... checking the parameters validity ................... */
/* -------------------------------------------------------------------- */
/* if no data to process -we're done */
if (DataInSize == 0) {
return CRYS_OK;
}
/* if the users context ID pointer is DX_NULL return an error */
if (ContextID_ptr == DX_NULL) {
return CRYS_RC4_INVALID_USER_CONTEXT_POINTER_ERROR;
}
/* if the users Data In pointer is illegal return an error */
if (DataIn_ptr == DX_NULL) {
return CRYS_RC4_DATA_IN_POINTER_INVALID_ERROR;
}
/* if the users Data Out pointer is illegal return an error */
if (DataOut_ptr == DX_NULL) {
return CRYS_RC4_DATA_OUT_POINTER_INVALID_ERROR;
}
/* data size must be a positive number */
if (DataInSize == 0) {
return CRYS_RC4_DATA_SIZE_ILLEGAL;
}
/* check validity for priv */
if (DxCcAcl_IsBuffAccessOk(ACCESS_READ_WRITE, ContextID_ptr, sizeof(CRYS_RC4UserContext_t))) {
return CRYS_RC4_ILLEGAL_PARAMS_ERROR;
}
pRc4Context = (struct sep_ctx_rc4 *)DX_GetUserCtxLocation(ContextID_ptr->buff);
symRc = SymDriverAdaptorProcess((struct sep_ctx_generic *)pRc4Context,
DataIn_ptr, DataOut_ptr, DataInSize);
return DX_CRYS_RETURN_ERROR(symRc, 0, SymAdaptor2CrysRc4Err);
}
/*!
* Memory copy using HW engines.
* The table below describes the supported copy modes that
* reference by the data input/output buffers:
*
* ----------------------------------------------
* | DataIn_ptr | DataOut_ptr |
* |--------------------------------------------|
* | SRAM | DCACHE/SRAM/DLLI/MLLI |
* | ICACHE | DCACHE/SRAM/DLLI/MLLI |
* | DCACHE | DCACHE/SRAM/DLLI/MLLI |
* | DLLI | DCACHE/SRAM/DLLI |
* | MLLI | DCACHE/SRAM/MLLI |
* ----------------------------------------------
*
* \param DataIn_ptr This is the source buffer which need to copy from.
* It may be a SeP local address or a DMA Object handle as described
* in the table above.
* \param DataSize In bytes
* \param DataOut_ptr This is the destination buffer which need to copy to.
* It may be a SeP local address or a DMA Object handle as described
* in the table above.
*
* Restriction: MLLI refers to DMA oject in System memory space.
*
* \return CRYSError_t On success CRYS_OK is returned, on failure an error according to
* CRYS_Bypass_error.h
*/
CIMPORT_C CRYSError_t CRYS_Bypass(DxUint8_t* DataIn_ptr,
DxUint32_t DataSize,
DxUint8_t* DataOut_ptr)
{
/* The return error identifiers */
CRYSError_t Error = CRYS_OK;
int symRc = DX_RET_OK;
DxUint32_t ctxBuff[CRYS_BYPASS_BUFF_OF_WORDS] = {0x0};
/* pointer on SEP AES context struct*/
struct sep_ctx_generic *pSepContext = (struct sep_ctx_generic *)DX_InitUserCtxLocation(ctxBuff,
sizeof(ctxBuff),
sizeof(struct sep_ctx_generic));
/* data size must be a positive number and a block size mult */
if (DataSize == 0 )
return DX_SUCCESS;
/* if the users Data In pointer is illegal return an error */
if ( DataIn_ptr == DX_NULL )
return CRYS_BYPASS_INVALID_INPUT_POINTER_ERROR;
/* if the users Data Out pointer is illegal return an error */
if ( DataOut_ptr == DX_NULL )
return CRYS_BYPASS_INVALID_OUTPUT_POINTER_ERROR;
Error = validateParams(DataIn_ptr, DataSize);
if ( Error != CRYS_OK ) {
return Error;
}
Error = validateParams(DataOut_ptr, DataSize);
if ( Error != CRYS_OK ) {
return Error;
}
pSepContext->alg = SEP_CRYPTO_ALG_BYPASS;
symRc = SymDriverAdaptorProcess(pSepContext,DataIn_ptr, DataOut_ptr, DataSize);
return DX_CRYS_RETURN_ERROR(symRc, 0, SymAdaptor2CrysBypassErr);
}
/**
* @brief This function is used to process a block on the DES machine.
* This function should be called after the CRYS_DES_Init function was called.
*
*
* @param[in] ContextID_ptr - a pointer to the DES context buffer allocated by the user that
* is used for the DES machine operation. this should be the same context that was
* used on the previous call of this session.
*
* @param[in] DataIn_ptr - The pointer to the buffer of the input data to the DES. The pointer does
* not need to be aligned.
*
* @param[in] DataInSize - The size of the input data in bytes: must be not 0 and must be multiple
* of 8 bytes.
*
* @param[in/out] DataOut_ptr - The pointer to the buffer of the output data from the DES. The pointer does not
* need to be aligned.
*
* @return CRYSError_t - On success CRYS_OK is returned, on failure a
* value MODULE_* crys_des_error.h
*/
CIMPORT_C CRYSError_t CRYS_DES_Block( CRYS_DESUserContext_t *ContextID_ptr,
DxUint8_t *DataIn_ptr,
DxUint32_t DataInSize,
DxUint8_t *DataOut_ptr )
{
int symRc = DX_RET_OK;
/* pointer on SEP DES context struct*/
struct sep_ctx_cipher *pDesContext;
/* if the users context ID pointer is DX_NULL return an error */
if( ContextID_ptr == DX_NULL ) {
return CRYS_DES_INVALID_USER_CONTEXT_POINTER_ERROR;
}
/* if the users Data In pointer is illegal return an error */
if( DataIn_ptr == DX_NULL ) {
return CRYS_DES_DATA_IN_POINTER_INVALID_ERROR;
}
/* if the users Data Out pointer is illegal return an error */
if( DataOut_ptr == DX_NULL ) {
return CRYS_DES_DATA_OUT_POINTER_INVALID_ERROR;
}
/* data size must be a positive number and a block size mult */
if (((DataInSize % CRYS_DES_BLOCK_SIZE_IN_BYTES) != 0) || (DataInSize == 0)) {
return CRYS_DES_DATA_SIZE_ILLEGAL;
}
/* check validity for priv */
if (DxCcAcl_IsBuffAccessOk(ACCESS_READ_WRITE, ContextID_ptr, sizeof(CRYS_DESUserContext_t))) {
return CRYS_DES_ILLEGAL_PARAMS_ERROR;
}
/* Get pointer to contiguous context in the HOST buffer */
pDesContext = (struct sep_ctx_cipher *)DX_GetUserCtxLocation(ContextID_ptr->buff);
symRc = SymDriverAdaptorProcess((struct sep_ctx_generic *)pDesContext,
DataIn_ptr, DataOut_ptr, DataInSize);
return DX_CRYS_RETURN_ERROR(symRc, 0, SymAdaptor2CrysDesErr);
}
/*!
* This function is used to process block of data in the combined or tunneling mode.
*
* \param pConfig A pointer to the Configuration Nodes array (NodesConfig).
* This array represents the user combined scheme.
* \param cipherOffset Relevant in cases where the authenticated data resides in
* a different offset from the cipher data.
* Note: currently an error returned for any value other than zero.
* \param pDataIn A pointer on a block of input data ready for processing.
* \param dataInSize The size of the input data.
* \param pDataOut A pointer on output data. Could be the same as input data pointer
* (for inplace operations) or NULL if there is only
* authentication for output.
*
* \return CIMPORT_C CRYSError_t On success the value CRYS_OK is returned,
* and on failure - a value from crys_combined_error.h
*/
CIMPORT_C CRYSError_t CRYS_Combined_Process(
CrysCombinedConfig_t *pConfig,
uint32_t cipherOffset,
uint8_t *pDataIn,
uint32_t dataInSize,
uint8_t *pDataOut)
{
CRYS_COMBINED_UserContext_t combinedUsrCtx;
struct sep_ctx_combined *pcombinedCtx;
CRYSError_t crysErr = CRYS_OK;
int symRc = DX_RET_OK;
/* parameters check */
if (pConfig == DX_NULL) {
return CRYS_COMBINED_INVALID_NODES_CONFIG_POINTER_ERROR;
}
if (cipherOffset != 0) {
/*currently cipher address must be equal to the auth address*/
return CRYS_COMBINED_ILLEGAL_OPERATION_MODE_ERROR;
}
if (pDataIn == NULL) {
return CRYS_COMBINED_DATA_IN_POINTER_INVALID_ERROR;
}
/* data size must be a positive number and a block size mult */
if (dataInSize == 0) {
return CRYS_COMBINED_DATA_IN_SIZE_ILLEGAL;
}
/* check validity for priv */
if (DxCcAcl_IsBuffAccessOk(ACCESS_READ, pConfig, sizeof(CrysCombinedConfig_t))) {
return CRYS_COMBINED_ILLEGAL_PARAMS_ERROR;
}
/* Get pointer to contiguous context in the HOST buffer */
pcombinedCtx = (struct sep_ctx_combined *)DX_InitUserCtxLocation(combinedUsrCtx.buff,
sizeof(CRYS_COMBINED_UserContext_t),
sizeof(struct sep_ctx_combined));
InitCombinedContext(pcombinedCtx, pConfig);
switch (pcombinedCtx->mode) {
case SEP_COMBINED_DIN_TO_AES_TO_HASH_MODE:
break;
case SEP_COMBINED_DIN_TO_AES_AND_HASH_MODE:
case SEP_COMBINED_DIN_TO_AES_TO_HASH_AND_DOUT_MODE:
case SEP_COMBINED_DIN_TO_AES_TO_AES_TO_DOUT_MODE:
if (pDataOut == NULL) {
return CRYS_COMBINED_DATA_OUT_POINTER_INVALID_ERROR;
}
break;
default:
return CRYS_COMBINED_ILLEGAL_OPERATION_MODE_ERROR;
}
crysErr = ValidateSupportedModes(pcombinedCtx);
if (crysErr != CRYS_OK) {
return crysErr;
}
symRc = SymDriverAdaptorProcess((struct sep_ctx_generic *)pcombinedCtx,
pDataIn, pDataOut, dataInSize);
return DX_CRYS_RETURN_ERROR(symRc, 0, SymAdaptor2CrysCombinedErr);
}
