Trait coins_bip32::ecdsa::signature::digest::core_api::VariableOutputCore

pub trait VariableOutputCore: UpdateCore + OutputSizeUser + BufferKindUser where
    Self::BlockSize: IsLess<UInt<UInt<UInt<UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, B0>, B0>, B0>>,
    <Self::BlockSize as IsLess<UInt<UInt<UInt<UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, B0>, B0>, B0>>>::Output: NonZero, {
    const TRUNC_SIDE: TruncSide;

    fn new(output_size: usize) -> Result<Self, InvalidOutputSize>;
    fn finalize_variable_core(
        &mut self,
        buffer: &mut BlockBuffer<Self::BlockSize, Self::BufferKind>,
        out: &mut GenericArray<u8, Self::OutputSize>
    );
}

Core trait for hash functions with variable output size.

Maximum output size is equal to OutputSizeUser::OutputSize. Users are expected to truncate result returned by the finalize_variable_core to output_size passed to the new method during construction. Truncation side is defined by the TRUNC_SIDE associated constant.

Required Associated Constants

const TRUNC_SIDE: TruncSide

Side which should be used in a truncated result.

Required Methods

fn new(output_size: usize) -> Result<Self, InvalidOutputSize>

Initialize hasher state for given output size.

Returns InvalidOutputSize if output_size is not valid for the algorithm, e.g. if it’s bigger than the OutputSize associated type.

fn finalize_variable_core(
    &mut self,
    buffer: &mut BlockBuffer<Self::BlockSize, Self::BufferKind>,
    out: &mut GenericArray<u8, Self::OutputSize>
)

Finalize hasher and write full hashing result into the out buffer.

The result must be truncated to output_size used during hasher construction. Truncation side is defined by the TRUNC_SIDE associated constant.

Implementations on Foreign Types

impl VariableOutputCore for Sha256VarCore

const TRUNC_SIDE: TruncSide = TruncSide::Left

fn new(output_size: usize) -> Result<Sha256VarCore, InvalidOutputSize>

fn finalize_variable_core(
    &mut self,
    buffer: &mut BlockBuffer<<Sha256VarCore as BlockSizeUser>::BlockSize, <Sha256VarCore as BufferKindUser>::BufferKind>,
    out: &mut GenericArray<u8, <Sha256VarCore as OutputSizeUser>::OutputSize>
)

impl VariableOutputCore for Sha512VarCore

const TRUNC_SIDE: TruncSide = TruncSide::Left

fn new(output_size: usize) -> Result<Sha512VarCore, InvalidOutputSize>

fn finalize_variable_core(
    &mut self,
    buffer: &mut BlockBuffer<<Sha512VarCore as BlockSizeUser>::BlockSize, <Sha512VarCore as BufferKindUser>::BufferKind>,
    out: &mut GenericArray<u8, <Sha512VarCore as OutputSizeUser>::OutputSize>
)

impl VariableOutputCore for Blake2bVarCore

const TRUNC_SIDE: TruncSide = TruncSide::Left

fn new(output_size: usize) -> Result<Blake2bVarCore, InvalidOutputSize>

fn finalize_variable_core(
    &mut self,
    buffer: &mut BlockBuffer<<Blake2bVarCore as BlockSizeUser>::BlockSize, <Blake2bVarCore as BufferKindUser>::BufferKind>,
    out: &mut GenericArray<u8, <Blake2bVarCore as OutputSizeUser>::OutputSize>
)

impl VariableOutputCore for Blake2sVarCore

const TRUNC_SIDE: TruncSide = TruncSide::Left

fn new(output_size: usize) -> Result<Blake2sVarCore, InvalidOutputSize>

fn finalize_variable_core(
    &mut self,
    buffer: &mut BlockBuffer<<Blake2sVarCore as BlockSizeUser>::BlockSize, <Blake2sVarCore as BufferKindUser>::BufferKind>,
    out: &mut GenericArray<u8, <Blake2sVarCore as OutputSizeUser>::OutputSize>
)

Implementors