Type Definition lpc55s6x_pac::hashcrypt::cryptcfg::R

type R = R<u32, CRYPTCFG>;

Reader of register CRYPTCFG

Methods

impl R

pub fn msw1st_out(&self) -> MSW1ST_OUT_R

Bit 0 - If 1, OUTDATA0 will be read Most significant word 1st for AES. Else it will be read in normal little endian - Least significant word 1st. Note: only if allowed by configuration.

pub fn swapkey(&self) -> SWAPKEY_R

Bit 1 - If 1, will Swap the key input (bytes in each word).

pub fn swapdat(&self) -> SWAPDAT_R

Bit 2 - If 1, will SWAP the data and IV inputs (bytes in each word).

pub fn msw1st(&self) -> MSW1ST_R

Bit 3 - If 1, load of key, IV, and data is MSW 1st for AES. Else, the words are little endian. Note: only if allowed by configuration.

pub fn aesmode(&self) -> AESMODE_R

Bits 4:5 - AES Cipher mode to use if plain AES

pub fn aesdecrypt(&self) -> AESDECRYPT_R

Bit 6 - AES ECB direction. Only encryption used if CTR mode or manual modes such as CFB

pub fn aessecret(&self) -> AESSECRET_R

Bit 7 - Selects the Hidden Secret key vs. User key, if provided. If security levels are used, only the highest level is permitted to select this.

pub fn aeskeysz(&self) -> AESKEYSZ_R

Bits 8:9 - Sets the AES key size

pub fn aesctrpos(&self) -> AESCTRPOS_R

Bits 10:12 - Halfword position of 16b counter in IV if AESMODE is CTR (position is fixed for Salsa and ChaCha). Only supports 16b counter, so application must control any additional bytes if using more. The 16-bit counter is read from the IV and incremented by 1 each time. Any other use CTR should use ECB directly and do its own XOR and so on.

pub fn streamlast(&self) -> STREAMLAST_R

Bit 16 - Is 1 if last stream block. If not 1, then the engine will compute the next "hash".

pub fn xsalsa(&self) -> XSALSA_R

Bit 17 - Is 1 if XSalsa 128b NONCE to be used vs. 64b

pub fn icbsz(&self) -> ICBSZ_R

Bits 20:21 - This sets the ICB size between 32 and 128 bits, using the following rules. Note that the counter is assumed to occupy the low order bits of the IV.

pub fn icbstrm(&self) -> ICBSTRM_R

Bits 22:23 - The size of the ICB-AES stream that can be pushed before needing to compute a new IV/ctr (counter start). This optimizes the performance of the stream of blocks after the 1st.