2.6.1.4 Crypto_Sym_Tdes_DecryptDirect

crypto_Sym_Status_E Crypto_Sym_Tdes_DecryptDirect(
    crypto_HandlerType_E handlerType_en, 
    crypto_Sym_OpModes_E opMode_en, 
    uint8_t *ptr_inputData, 
    uint32_t dataLen, 
    uint8_t *ptr_outData, 
    uint8_t *ptr_key, 
    uint8_t *ptr_initVect, 
    uint32_t sessionID
    );

Description

This API performs TDES/3DES decryption for different operation modes in a single step without initializing.

Parameters


No.	Argument Type	Argument Name	Type	Description
1	crypto_HandlerType_E	handlerType_en	Input	Enum for crypto operation handler i.e., SW, HW.
2	crypto_Sym_OpModes_E	opMode_en	Input	Select operation mode. i.e., ECB, CBC, or others.
3	uint8_t*	ptr_inputData	Input	Input data to encrypt.
4	uint32_t	dataLen	Input Input	Length of plain data in bytes.
5	uint8_t*	ptr_outData	Output	Pointer to store cipher text as output.
6	uint8_t*	ptr_key	Input	Key for the Symmetric operation.
7	uint8_t*	ptr_initVect	Input	Initialization vector. Use NULL when ECB mode.
8	uint32_t	sessionID	Input	It defines the session ID, must be more than zero.

Returns


Return Type	Description
crypto_Sym_Status_E	Function returns the status of the API.

Example

#define sessionID 1
crypto_Sym_Status_E status;
crypto_HandlerType_E handlerType_en = CRYPTO_HANDLER_HW_INTERNAL;
crypto_Sym_OpModes_E opMode_en = CRYPTO_SYM_OPMODE_ECB;
uint8_t key[16] = {/*data*/};
uint32_t keyLen = sizeof(key);
uint8_t *ptr_initVect = NULL;
uint8_t inputData[64] = {/*data*/};
uint32_t dataLen = sizeof(inputData);
uint8_t outData[64];

status = Crypto_Sym_Tdes_DecryptDirect(
    handlerType_en,
    opMode_en,
    inputData,
    dataLen,
    outData,
    key,
    ptr_initVect,
    sessionID
    );