Struct aead::stream::StreamLE31

pub struct StreamLE31<A> where
    A: AeadInPlace,
    A::NonceSize: Sub<U4>,
    <<A as AeadCore>::NonceSize as Sub<U4>>::Output: ArrayLength<u8>, { /* private fields */ }

Available on crate feature stream only.

STREAM as instantiated with a 31-bit little endian counter and 1-bit “last block” flag stored as the most significant bit of the counter when interpreted as a 32-bit integer.

The 31-bit + 1-bit value is stored as the last 4 bytes of the AEAD nonce.

Trait Implementations

impl<A> NewStream<A> for StreamLE31<A> where
    A: AeadInPlace,
    A::NonceSize: Sub<U4>,
    <<A as AeadCore>::NonceSize as Sub<U4>>::Output: ArrayLength<u8>, 

fn from_aead(aead: A, nonce: &Nonce<A, Self>) -> Self

Create a new STREAM from the given AEAD cipher.

impl<A> StreamPrimitive<A> for StreamLE31<A> where
    A: AeadInPlace,
    A::NonceSize: Sub<U4>,
    <<A as AeadCore>::NonceSize as Sub<U4>>::Output: ArrayLength<u8>, 

type NonceOverhead = UInt<UInt<UInt<UTerm, B1>, B0>, B0>

Number of bytes this STREAM primitive requires from the nonce.

type Counter = u32

Type used as the STREAM counter.

const COUNTER_INCR: u32 = 1u32

Value to use when incrementing the STREAM counter (i.e. one)

const COUNTER_MAX: u32 = 268_435_455u32

Maximum value of the STREAM counter.

fn encrypt_in_place(
    &self,
    position: u32,
    last_block: bool,
    associated_data: &[u8],
    buffer: &mut dyn Buffer
) -> Result<()>

Encrypt an AEAD message in-place at the given position in the STREAM.

fn decrypt_in_place(
    &self,
    position: Self::Counter,
    last_block: bool,
    associated_data: &[u8],
    buffer: &mut dyn Buffer
) -> Result<()>

Decrypt an AEAD message in-place at the given position in the STREAM.

fn encrypt<'msg, 'aad>(
    &self,
    position: Self::Counter,
    last_block: bool,
    plaintext: impl Into<Payload<'msg, 'aad>>
) -> Result<Vec<u8>>

Available on crate feature alloc only.

Encrypt the given plaintext payload, and return the resulting ciphertext as a vector of bytes.

fn decrypt<'msg, 'aad>(
    &self,
    position: Self::Counter,
    last_block: bool,
    ciphertext: impl Into<Payload<'msg, 'aad>>
) -> Result<Vec<u8>>

Available on crate feature alloc only.

Decrypt the given ciphertext slice, and return the resulting plaintext as a vector of bytes.

fn encryptor(self) -> Encryptor<A, Self> where
    Self: Sized, 

Obtain Encryptor for this StreamPrimitive.

fn decryptor(self) -> Decryptor<A, Self> where
    Self: Sized, 

Obtain Decryptor for this StreamPrimitive.