Struct cc13x2_cc26x2_hal::crypto::aesdatalen0::W

pub struct W { /* fields omitted */ }

Value to write to the register

Methods

impl W

pub fn reset_value() -> W

Reset value of the register

pub unsafe fn bits(&mut self, bits: u32) -> &mut Self

Writes raw bits to the register

pub fn c_length(&mut self) -> _C_LENGTHW

Bits 0:31 - 31:0] C_LENGTH[31:0] Bits [60:0] of the crypto length registers (LSW and MSW) store the cryptographic data length in bytes for all modes. Once processing with this context is started, this length decrements to 0. Data lengths up to (261: 1) bytes are allowed. For GCM, any value up to 236 - 32 bytes can be used. This is because a 32-bit counter mode is used; the maximum number of 128-bit blocks is 232 - 2, resulting in a maximum number of bytes of 236 - 32. A write to this register triggers the engine to start using this context. This is valid for all modes except GCM and CCM. Note: For the combined modes (GCM and CCM), this length does not include the authentication only data; the authentication length is specified in the AESAUTHLEN register All modes must have a length greater than 0. For the combined modes, it is allowed to have one of the lengths equal to 0. For the basic encryption modes (ECB, CBC, and CTR) it is allowed to program zero to the length field; in that case the length is assumed infinite. All data must be byte (8-bit) aligned for stream cipher modes; bit aligned data streams are not supported by the EIP-120t. For block cipher modes, the data length must be programmed in multiples of the block cipher size, 16 bytes. For a host read operation, these registers return all-0s.