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aead::stream

Struct StreamLE31

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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.
Expand description

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.

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

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

Create a new STREAM from the given AEAD cipher.
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fn new(key: &Key<A>, nonce: &Nonce<A, Self>) -> Self
where A: KeyInit, Self: Sized,

Create a new STREAM with the given key and nonce.
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impl<A> StreamPrimitive<A> for StreamLE31<A>
where A: AeadInPlace, A::NonceSize: Sub<U4>, <<A as AeadCore>::NonceSize as Sub<U4>>::Output: ArrayLength<u8>,

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const COUNTER_INCR: u32 = 1u32

Value to use when incrementing the STREAM counter (i.e. one)
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const COUNTER_MAX: u32 = 268_435_455u32

Maximum value of the STREAM counter.
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type NonceOverhead = UInt<UInt<UInt<UTerm, B1>, B0>, B0>

Number of bytes this STREAM primitive requires from the nonce.
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type Counter = u32

Type used as the STREAM counter.
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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.
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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.
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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.
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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.
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fn encryptor(self) -> Encryptor<A, Self>
where Self: Sized,

Obtain Encryptor for this StreamPrimitive.
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fn decryptor(self) -> Decryptor<A, Self>
where Self: Sized,

Obtain Decryptor for this StreamPrimitive.

Auto Trait Implementations§

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impl<A> Freeze for StreamLE31<A>
where <<A as AeadCore>::NonceSize as Sub<UInt<UInt<UInt<UTerm, B1>, B0>, B0>>>::Output: Sized, A: Freeze, <<<A as AeadCore>::NonceSize as Sub<UInt<UInt<UInt<UTerm, B1>, B0>, B0>>>::Output as ArrayLength<u8>>::ArrayType: Freeze,

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impl<A> RefUnwindSafe for StreamLE31<A>
where <<A as AeadCore>::NonceSize as Sub<UInt<UInt<UInt<UTerm, B1>, B0>, B0>>>::Output: Sized, A: RefUnwindSafe, <<<A as AeadCore>::NonceSize as Sub<UInt<UInt<UInt<UTerm, B1>, B0>, B0>>>::Output as ArrayLength<u8>>::ArrayType: RefUnwindSafe,

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impl<A> Send for StreamLE31<A>
where <<A as AeadCore>::NonceSize as Sub<UInt<UInt<UInt<UTerm, B1>, B0>, B0>>>::Output: Sized, A: Send,

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impl<A> Sync for StreamLE31<A>
where <<A as AeadCore>::NonceSize as Sub<UInt<UInt<UInt<UTerm, B1>, B0>, B0>>>::Output: Sized, A: Sync,

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impl<A> Unpin for StreamLE31<A>
where <<A as AeadCore>::NonceSize as Sub<UInt<UInt<UInt<UTerm, B1>, B0>, B0>>>::Output: Sized, A: Unpin, <<<A as AeadCore>::NonceSize as Sub<UInt<UInt<UInt<UTerm, B1>, B0>, B0>>>::Output as ArrayLength<u8>>::ArrayType: Unpin,

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impl<A> UnwindSafe for StreamLE31<A>
where <<A as AeadCore>::NonceSize as Sub<UInt<UInt<UInt<UTerm, B1>, B0>, B0>>>::Output: Sized, A: UnwindSafe, <<<A as AeadCore>::NonceSize as Sub<UInt<UInt<UInt<UTerm, B1>, B0>, B0>>>::Output as ArrayLength<u8>>::ArrayType: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.