Struct embassy_stm32::cryp::Cryp

pub struct Cryp<'d, T: Instance, DmaIn = NoDma, DmaOut = NoDma> { /* private fields */ }

Crypto Accelerator Driver

Implementations

impl<'d, T: Instance, DmaIn, DmaOut> Cryp<'d, T, DmaIn, DmaOut>

pub fn new( peri: impl Peripheral<P = T> + 'd, indma: impl Peripheral<P = DmaIn> + 'd, outdma: impl Peripheral<P = DmaOut> + 'd, _irq: impl Binding<T::Interrupt, InterruptHandler<T>> + 'd ) -> Self

Create a new CRYP driver.

pub fn start_blocking<'c, C: Cipher<'c> + CipherSized + IVSized>( &self, cipher: &'c C, dir: Direction ) -> Context<'c, C>

Start a new encrypt or decrypt operation for the given cipher.

pub async fn start<'c, C: Cipher<'c> + CipherSized + IVSized>( &mut self, cipher: &'c C, dir: Direction ) -> Context<'c, C>

where DmaIn: DmaIn<T>, DmaOut: DmaOut<T>,

Start a new encrypt or decrypt operation for the given cipher.

pub fn payload_blocking<'c, C: Cipher<'c> + CipherSized + IVSized>( &self, ctx: &mut Context<'c, C>, input: &[u8], output: &mut [u8], last_block: bool )

Performs encryption/decryption on the provided context. The context determines algorithm, mode, and state of the crypto accelerator. When the last piece of data is supplied, last_block should be true. This function panics under various mismatches of parameters. Output buffer must be at least as long as the input buffer. Data must be a multiple of block size (128-bits for AES, 64-bits for DES) for CBC and ECB modes. Padding or ciphertext stealing must be managed by the application for these modes. Data must also be a multiple of block size unless last_block is true.

pub async fn payload<'c, C: Cipher<'c> + CipherSized + IVSized>( &mut self, ctx: &mut Context<'c, C>, input: &[u8], output: &mut [u8], last_block: bool )

where DmaIn: DmaIn<T>, DmaOut: DmaOut<T>,

Performs encryption/decryption on the provided context. The context determines algorithm, mode, and state of the crypto accelerator. When the last piece of data is supplied, last_block should be true. This function panics under various mismatches of parameters. Output buffer must be at least as long as the input buffer. Data must be a multiple of block size (128-bits for AES, 64-bits for DES) for CBC and ECB modes. Padding or ciphertext stealing must be managed by the application for these modes. Data must also be a multiple of block size unless last_block is true.