HAL_HMAC_MD5_Start_DMA() - syntax, references, call tree, description

Initialize the HASH peripheral in HMAC MD5 mode then initiate the required DMA transfers to feed the key and the input buffer to the Peripheral.

Arguments

Return value

Notes

Once the DMA transfers are finished (indicated by hhash->State set back to HAL_HASH_STATE_READY), HAL_HASH_MD5_Finish() API must be called to retrieve the computed digest. Same key is used for the inner and the outer hash functions; pointer to key and key size are respectively stored in hhash->Init.pKey and hhash->Init.KeySize. If MDMAT bit is set before calling this function (multi-buffer HASH processing case), the input buffer size (in bytes) must be a multiple of 4 otherwise, the HASH digest computation is corrupted. For the processing of the last buffer of the thread, MDMAT bit must be reset and the buffer length (in bytes) doesn't have to be a multiple of 4.

References

Location	Text
stm32f4xx_hal_hash.c:1302	HAL_StatusTypeDef HAL_HMAC_MD5_Start_DMA(HASH_HandleTypeDef hhash, uint8_t pInBuffer, uint32_t Size)
stm32f4xx_hal_hash.h:566	HAL_StatusTypeDef HAL_HMAC_MD5_Start_DMA(HASH_HandleTypeDef hhash, uint8_t pInBuffer, uint32_t Size);