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/**
******************************************************************************
* @file lib_crypt.c
* @author Application Team
* @version V4.4.0
* @date 2018-09-27
* @brief CRYPT library.
******************************************************************************
* @attention
*
******************************************************************************
*/
#include "lib_crypt.h"
/**
* @brief Configure PTRA register, data in this address will be read out to do
* the CRYPT calculation
* @param AddrA: the SRAM address(Bit 14:0)
* @retval None
*/
void CRYPT_AddressAConfig(uint16_t AddrA)
{
/* Check parameters */
assert_parameters(IS_CRYPT_ADDR(AddrA));
CRYPT->PTRA = AddrA & CRYPT_PTRA_PTRA;
}
/**
* @brief Configure PTRB register, data in this address will be read out to do
* the CRYPT calculation
* @param AddrB: the SRAM address(Bit 14:0)
* @retval None
*/
void CRYPT_AddressBConfig(uint16_t AddrB)
{
/* Check parameters */
assert_parameters(IS_CRYPT_ADDR(AddrB));
CRYPT->PTRB = AddrB & CRYPT_PTRB_PTRB;
}
/**
* @brief Configure PTRO register, The CRYPT engine will write calculation
* result into this address
* @param AddrO: the SRAM address(Bit 14:0)
* @retval None
*/
void CRYPT_AddressOConfig(uint16_t AddrO)
{
/* Check parameters */
assert_parameters(IS_CRYPT_ADDR(AddrO));
CRYPT->PTRO = AddrO & CRYPT_PTRO_PTRO;
}
/**
* @brief Get carry/borrow bit of add/sub operation.
* @param None
* @retval carry/borrow bit value
*/
uint8_t CRYPT_GetCarryBorrowBit(void)
{
if (CRYPT->CARRY & CRYPT_CARRY_CARRY)
return (1);
else
return (0);
}
/**
* @brief Start addition operation.
* @param Length:
* CRYPT_LENGTH_32
* CRYPT_LENGTH_64
* CRYPT_LENGTH_96
* CRYPT_LENGTH_128
* CRYPT_LENGTH_160
* CRYPT_LENGTH_192
* CRYPT_LENGTH_224
* CRYPT_LENGTH_256
* CRYPT_LENGTH_288
* CRYPT_LENGTH_320
* CRYPT_LENGTH_352
* CRYPT_LENGTH_384
* CRYPT_LENGTH_416
* CRYPT_LENGTH_448
* CRYPT_LENGTH_480
* CRYPT_LENGTH_512
* Nostop:
* CRYPT_STOPCPU
* CRYPT_NOSTOPCPU
* @retval None
*/
void CRYPT_StartAdd(uint32_t Length, uint32_t Nostop)
{
/* Check parameters */
assert_parameters(IS_CRYPT_LENGTH(Length));
assert_parameters(IS_CRYPT_NOSTOP(Nostop));
CRYPT->CTRL = (Nostop \
|Length \
|CRYPT_CTRL_MODE_ADD \
|CRYPT_CTRL_ACT);
}
/**
* @brief Start multiplication operation.
* @param Length:
* CRYPT_LENGTH_32
* CRYPT_LENGTH_64
* CRYPT_LENGTH_96
* CRYPT_LENGTH_128
* CRYPT_LENGTH_160
* CRYPT_LENGTH_192
* CRYPT_LENGTH_224
* CRYPT_LENGTH_256
* CRYPT_LENGTH_288
* CRYPT_LENGTH_320
* CRYPT_LENGTH_352
* CRYPT_LENGTH_384
* CRYPT_LENGTH_416
* CRYPT_LENGTH_448
* CRYPT_LENGTH_480
* CRYPT_LENGTH_512
* Nostop:
* CRYPT_STOPCPU
* CRYPT_NOSTOPCPU
* @retval None
*/
void CRYPT_StartMultiply(uint32_t Length, uint32_t Nostop)
{
/* Check parameters */
assert_parameters(IS_CRYPT_LENGTH(Length));
assert_parameters(IS_CRYPT_NOSTOP(Nostop));
CRYPT->CTRL = (Nostop \
|Length \
|CRYPT_CTRL_MODE_MULTIPLY \
|CRYPT_CTRL_ACT);
}
/**
* @brief Start subtraction operation.
* @param Length:
* CRYPT_LENGTH_32
* CRYPT_LENGTH_64
* CRYPT_LENGTH_96
* CRYPT_LENGTH_128
* CRYPT_LENGTH_160
* CRYPT_LENGTH_192
* CRYPT_LENGTH_224
* CRYPT_LENGTH_256
* CRYPT_LENGTH_288
* CRYPT_LENGTH_320
* CRYPT_LENGTH_352
* CRYPT_LENGTH_384
* CRYPT_LENGTH_416
* CRYPT_LENGTH_448
* CRYPT_LENGTH_480
* CRYPT_LENGTH_512
* Nostop:
* CRYPT_STOPCPU
* CRYPT_NOSTOPCPU
* @retval None
*/
void CRYPT_StartSub(uint32_t Length, uint32_t Nostop)
{
/* Check parameters */
assert_parameters(IS_CRYPT_LENGTH(Length));
assert_parameters(IS_CRYPT_NOSTOP(Nostop));
CRYPT->CTRL = (Nostop \
|Length \
|CRYPT_CTRL_MODE_SUB \
|CRYPT_CTRL_ACT);
}
/**
* @brief Start rigth shift 1-bit operation.
* @param Length:
* CRYPT_LENGTH_32
* CRYPT_LENGTH_64
* CRYPT_LENGTH_96
* CRYPT_LENGTH_128
* CRYPT_LENGTH_160
* CRYPT_LENGTH_192
* CRYPT_LENGTH_224
* CRYPT_LENGTH_256
* CRYPT_LENGTH_288
* CRYPT_LENGTH_320
* CRYPT_LENGTH_352
* CRYPT_LENGTH_384
* CRYPT_LENGTH_416
* CRYPT_LENGTH_448
* CRYPT_LENGTH_480
* CRYPT_LENGTH_512
* Nostop:
* CRYPT_STOPCPU
* CRYPT_NOSTOPCPU
* @retval None
*/
void CRYPT_StartRShift1(uint32_t Length, uint32_t Nostop)
{
/* Check parameters */
assert_parameters(IS_CRYPT_LENGTH(Length));
assert_parameters(IS_CRYPT_NOSTOP(Nostop));
CRYPT->CTRL = (Nostop \
|Length \
|CRYPT_CTRL_MODE_RSHIFT1 \
|CRYPT_CTRL_ACT);
}
/**
* @brief Waiting for last operation to complete.
* @param None
* @retval None
*/
void CRYPT_WaitForLastOperation(void)
{
while (CRYPT->CTRL & CRYPT_CTRL_ACT)
{
}
}
/*********************************** END OF FILE ******************************/
|
