Struct aes_ccm::CcmMode

pub struct CcmMode { /* fields omitted */ }

The AES-CCM instance.

Methods

impl CcmMode

pub fn new(
    key: &[u8; 16],
    nonce: [u8; 13],
    mlen: usize
) -> Result<CcmMode, Error>

Creates a new CcmMode.

Valid mlen values are: 4, 6, 8, 10, 12, 14, 16. The nonce is consumed to prevent reuse, which would destroy security.

pub fn generate_encrypt<'a>(
    &self,
    out: &'a mut [u8],
    associated_data: &[u8],
    payload: &[u8]
) -> Result<&'a [u8], Error>

CCM tag generation and encryption procedure.

out buffer must be at least (payload.len() + c.mlen) bytes long. A slice to the encrypted output within the buffer will be returned.

pub fn decrypt_verify<'a>(
    &self,
    out: &'a mut [u8],
    associated_data: &[u8],
    payload: &[u8]
) -> Result<&'a [u8], Error>

CCM decryption and tag verification procedure.

out buffer must be at least (payload.len() - c.mlen) bytes long. A slice to the decrypted output within the buffer will be returned.