Lioness

hopr_crypto_types::lioness

Struct Lioness 

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pub struct Lioness<H: KeySizeUser + OutputSizeUser, S: KeySizeUser + IvSizeUser, B>
where
    H::OutputSize: IsEqual<S::KeySize, Output = B1>,
    H::KeySize: IsEqual<S::KeySize, Output = B1>,
    B: IsGreater<<S as KeySizeUser>::KeySize, Output = B1> + ArrayLength<u8>,
{ /* private fields */ }
Expand description

Implementation of Lioness wide-block cipher over a keyed Digest and a StreamCipher.

§Requirements

  • The output size of the Digest H must match the key size of the StreamCipher.
  • The key size of the keyed digest H must be equal to the key size of the StreamCipher.
  • The block size B can be arbitrary but must be strictly greater than the key size of the StreamCipher.
  • However, for cryptographic security, B must be at least twice the key size of the StreamCipher.

The key size of the Lioness cipher is 4-times the size of StreamCipher’s key.

The IV size of the Lioness cipher is 2-times the size of the StreamCipher’s IV size.

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impl<H: Digest + KeyInit, S: StreamCipher + KeyIvInit, B> Lioness<H, S, B>
where H::OutputSize: IsEqual<<S as KeySizeUser>::KeySize, Output = B1> + Mul<U4>, H::KeySize: IsEqual<S::KeySize, Output = B1>, B: IsGreater<<S as KeySizeUser>::KeySize, Output = B1> + Sub<<S as KeySizeUser>::KeySize> + ArrayLength<u8>, <B as Sub<<S as KeySizeUser>::KeySize>>::Output: ArrayLength<u8>, <S as IvSizeUser>::IvSize: Mul<U2>, <H::OutputSize as Mul<U4>>::Output: ArrayLength<u8>, <<S as IvSizeUser>::IvSize as Mul<U2>>::Output: ArrayLength<u8>,

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pub fn encrypt_block(&self, block: InOut<'_, '_, Block<Self>>)

Performs encryption of the given block.

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pub fn decrypt_block(&self, block: InOut<'_, '_, Block<Self>>)

Performs decryption of the given block.

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impl<H: KeySizeUser + OutputSizeUser + AlgorithmName, S: AlgorithmName + KeySizeUser + IvSizeUser, B> AlgorithmName for Lioness<H, S, B>
where H::OutputSize: IsEqual<<S as KeySizeUser>::KeySize, Output = B1>, H::KeySize: IsEqual<S::KeySize, Output = B1>, B: IsGreater<<S as KeySizeUser>::KeySize, Output = B1> + ArrayLength<u8>,

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fn write_alg_name(f: &mut Formatter<'_>) -> Result

Write algorithm name into f.
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impl<H: KeySizeUser + OutputSizeUser, S: KeySizeUser + IvSizeUser, B> BlockSizeUser for Lioness<H, S, B>
where H::OutputSize: IsEqual<S::KeySize, Output = B1> + Mul<U4>, H::KeySize: IsEqual<S::KeySize, Output = B1>, B: IsGreater<<S as KeySizeUser>::KeySize, Output = B1> + ArrayLength<u8>, S::IvSize: Mul<U2>, <H::OutputSize as Mul<U4>>::Output: ArrayLength<u8>, <S::IvSize as Mul<U2>>::Output: ArrayLength<u8>,

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type BlockSize = B

Size of the block in bytes.
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fn block_size() -> usize

Return block size in bytes.
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impl<H: Clone + KeySizeUser + OutputSizeUser, S: Clone + KeySizeUser + IvSizeUser, B> Clone for Lioness<H, S, B>
where H::OutputSize: IsEqual<S::KeySize, Output = B1>, H::KeySize: IsEqual<S::KeySize, Output = B1> + Clone, B: IsGreater<<S as KeySizeUser>::KeySize, Output = B1> + Clone + ArrayLength<u8>, S::KeySize: Clone, S::IvSize: Clone,

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fn clone(&self) -> Lioness<H, S, B>

Returns a duplicate of the value. Read more
1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<H: KeySizeUser + OutputSizeUser, S: KeySizeUser + IvSizeUser, B> Drop for Lioness<H, S, B>
where H::OutputSize: IsEqual<S::KeySize, Output = B1>, H::KeySize: IsEqual<S::KeySize, Output = B1>, B: IsGreater<<S as KeySizeUser>::KeySize, Output = B1> + ArrayLength<u8>,

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fn drop(&mut self)

Executes the destructor for this type. Read more
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impl<H: KeySizeUser + OutputSizeUser, S: KeySizeUser + IvSizeUser, B> IvSizeUser for Lioness<H, S, B>
where H::OutputSize: IsEqual<S::KeySize, Output = B1>, H::KeySize: IsEqual<S::KeySize, Output = B1>, B: IsGreater<<S as KeySizeUser>::KeySize, Output = B1> + ArrayLength<u8>, S::IvSize: Mul<U2>, <S::IvSize as Mul<U2>>::Output: ArrayLength<u8>,

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type IvSize = <<S as IvSizeUser>::IvSize as Mul<UInt<UInt<UTerm, B1>, B0>>>::Output

Initialization vector size in bytes.
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fn iv_size() -> usize

Return IV size in bytes.
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impl<H: KeySizeUser + OutputSizeUser, S: KeySizeUser + IvSizeUser, B> KeyIvInit for Lioness<H, S, B>
where H::OutputSize: IsEqual<S::KeySize, Output = B1> + Mul<U4>, H::KeySize: IsEqual<S::KeySize, Output = B1>, B: IsGreater<<S as KeySizeUser>::KeySize, Output = B1> + ArrayLength<u8>, S::IvSize: Mul<U2>, <H::OutputSize as Mul<U4>>::Output: ArrayLength<u8>, <S::IvSize as Mul<U2>>::Output: ArrayLength<u8>,

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fn new(key: &Key<Self>, iv: &Iv<Self>) -> Self

Create new value from fixed length key and nonce.
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fn new_from_slices(key: &[u8], iv: &[u8]) -> Result<Self, InvalidLength>

Create new value from variable length key and nonce.
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fn generate_key( rng: impl CryptoRng + RngCore, ) -> GenericArray<u8, Self::KeySize>

Generate random key using the provided CryptoRng.
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fn generate_iv(rng: impl CryptoRng + RngCore) -> GenericArray<u8, Self::IvSize>

Generate random IV using the provided CryptoRng.
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fn generate_key_iv( rng: impl CryptoRng + RngCore, ) -> (GenericArray<u8, Self::KeySize>, GenericArray<u8, Self::IvSize>)

Generate random key and nonce using the provided CryptoRng.
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impl<H: KeySizeUser + OutputSizeUser, S: KeySizeUser + IvSizeUser, B> KeySizeUser for Lioness<H, S, B>
where H::OutputSize: IsEqual<S::KeySize, Output = B1> + Mul<U4>, H::KeySize: IsEqual<S::KeySize, Output = B1>, B: IsGreater<<S as KeySizeUser>::KeySize, Output = B1> + ArrayLength<u8>, <H::OutputSize as Mul<U4>>::Output: ArrayLength<u8>,

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type KeySize = <<H as OutputSizeUser>::OutputSize as Mul<UInt<UInt<UInt<UTerm, B1>, B0>, B0>>>::Output

Key size in bytes.
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fn key_size() -> usize

Return key size in bytes.
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impl<H: Digest + KeyInit, S: StreamCipher + KeyIvInit, B> PRP for Lioness<H, S, B>
where H::OutputSize: IsEqual<<S as KeySizeUser>::KeySize, Output = B1> + Mul<U4>, H::KeySize: IsEqual<S::KeySize, Output = B1>, B: IsGreater<<S as KeySizeUser>::KeySize, Output = B1> + Sub<<S as KeySizeUser>::KeySize> + ArrayLength<u8>, <B as Sub<<S as KeySizeUser>::KeySize>>::Output: ArrayLength<u8>, <S as IvSizeUser>::IvSize: Mul<U2>, <H::OutputSize as Mul<U4>>::Output: ArrayLength<u8>, <<S as IvSizeUser>::IvSize as Mul<U2>>::Output: ArrayLength<u8>,

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fn forward(&self, data: &mut Block<Self>)

Forward permutation
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fn inverse(&self, data: &mut Block<Self>)

Inverse permutation

Auto Trait Implementations§

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impl<H, S, B> Freeze for Lioness<H, S, B>
where <<S as KeySizeUser>::KeySize as ArrayLength<u8>>::ArrayType: Freeze, <<H as KeySizeUser>::KeySize as ArrayLength<u8>>::ArrayType: Freeze, <<S as IvSizeUser>::IvSize as ArrayLength<u8>>::ArrayType: Freeze,

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impl<H, S, B> RefUnwindSafe for Lioness<H, S, B>
where <<S as KeySizeUser>::KeySize as ArrayLength<u8>>::ArrayType: RefUnwindSafe, <<H as KeySizeUser>::KeySize as ArrayLength<u8>>::ArrayType: RefUnwindSafe, <<S as IvSizeUser>::IvSize as ArrayLength<u8>>::ArrayType: RefUnwindSafe, H: RefUnwindSafe, S: RefUnwindSafe, B: RefUnwindSafe,

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impl<H, S, B> Send for Lioness<H, S, B>
where H: Send, S: Send, B: Send,

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impl<H, S, B> Sync for Lioness<H, S, B>
where H: Sync, S: Sync, B: Sync,

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impl<H, S, B> Unpin for Lioness<H, S, B>
where <<S as KeySizeUser>::KeySize as ArrayLength<u8>>::ArrayType: Unpin, <<H as KeySizeUser>::KeySize as ArrayLength<u8>>::ArrayType: Unpin, <<S as IvSizeUser>::IvSize as ArrayLength<u8>>::ArrayType: Unpin, H: Unpin, S: Unpin, B: Unpin,

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impl<H, S, B> UnwindSafe for Lioness<H, S, B>
where <<S as KeySizeUser>::KeySize as ArrayLength<u8>>::ArrayType: UnwindSafe, <<H as KeySizeUser>::KeySize as ArrayLength<u8>>::ArrayType: UnwindSafe, <<S as IvSizeUser>::IvSize as ArrayLength<u8>>::ArrayType: UnwindSafe, H: UnwindSafe, S: UnwindSafe, B: UnwindSafe,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
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