Struct halo2_gadgets::poseidon::Pow5Chip

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pub struct Pow5Chip<F: Field, const WIDTH: usize, const RATE: usize> { /* private fields */ }
Expand description

A Poseidon chip using an $x^5$ S-Box.

The chip is implemented using a single round per row for full rounds, and two rounds per row for partial rounds.

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impl<F: Field, const WIDTH: usize, const RATE: usize> Pow5Chip<F, WIDTH, RATE>

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pub fn configure<S: Spec<F, WIDTH, RATE>>( meta: &mut ConstraintSystem<F>, state: [Column<Advice>; WIDTH], partial_sbox: Column<Advice>, rc_a: [Column<Fixed>; WIDTH], rc_b: [Column<Fixed>; WIDTH] ) -> Pow5Config<F, WIDTH, RATE>

Configures this chip for use in a circuit.

Side-effects

All columns in state will be equality-enabled.

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pub fn construct(config: Pow5Config<F, WIDTH, RATE>) -> Self

Construct a Pow5Chip.

Trait Implementations§

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impl<F: Field, const WIDTH: usize, const RATE: usize> Chip<F> for Pow5Chip<F, WIDTH, RATE>

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type Config = Pow5Config<F, WIDTH, RATE>

A type that holds the configuration for this chip, and any other state it may need during circuit synthesis, that can be derived during Circuit::configure.
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type Loaded = ()

A type that holds any general chip state that needs to be loaded at the start of Circuit::synthesize. This might simply be () for some chips.
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fn config(&self) -> &Self::Config

The chip holds its own configuration.
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fn loaded(&self) -> &Self::Loaded

Provides access to general chip state loaded at the beginning of circuit synthesis. Read more
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impl<F: Debug + Field, const WIDTH: usize, const RATE: usize> Debug for Pow5Chip<F, WIDTH, RATE>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<F: Field, S: Spec<F, WIDTH, RATE>, const WIDTH: usize, const RATE: usize> PoseidonInstructions<F, S, WIDTH, RATE> for Pow5Chip<F, WIDTH, RATE>

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type Word = StateWord<F>

Variable representing the word over which the Poseidon permutation operates.
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fn permute( &self, layouter: &mut impl Layouter<F>, initial_state: &[Self::Word; T] ) -> Result<[Self::Word; T], Error>

Applies the Poseidon permutation to the given state.
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impl<F: Field, S: Spec<F, WIDTH, RATE>, D: Domain<F, RATE>, const WIDTH: usize, const RATE: usize> PoseidonSpongeInstructions<F, S, D, WIDTH, RATE> for Pow5Chip<F, WIDTH, RATE>

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fn initial_state( &self, layouter: &mut impl Layouter<F> ) -> Result<[Self::Word; T], Error>

Returns the initial empty state for the given domain.
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fn add_input( &self, layouter: &mut impl Layouter<F>, initial_state: &[Self::Word; T], input: &Absorbing<PaddedWord<F>, RATE> ) -> Result<[Self::Word; T], Error>

Adds the given input to the state.
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fn get_output(state: &[Self::Word; T]) -> Squeezing<Self::Word, RATE>

Extracts sponge output from the given state.

Auto Trait Implementations§

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impl<F, const WIDTH: usize, const RATE: usize> RefUnwindSafe for Pow5Chip<F, WIDTH, RATE>where F: RefUnwindSafe,

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impl<F, const WIDTH: usize, const RATE: usize> Send for Pow5Chip<F, WIDTH, RATE>

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impl<F, const WIDTH: usize, const RATE: usize> Sync for Pow5Chip<F, WIDTH, RATE>

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impl<F, const WIDTH: usize, const RATE: usize> Unpin for Pow5Chip<F, WIDTH, RATE>where F: Unpin,

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impl<F, const WIDTH: usize, const RATE: usize> UnwindSafe for Pow5Chip<F, WIDTH, RATE>where F: UnwindSafe,

Blanket Implementations§

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impl<T> Any for Twhere 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 Twhere T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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Converts self into T using Into<T>. Read more
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fn fmt_binary(self) -> FmtBinary<Self>where Self: Binary,

Causes self to use its Binary implementation when Debug-formatted.
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Causes self to use its Display implementation when Debug-formatted.
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Causes self to use its LowerExp implementation when Debug-formatted.
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Causes self to use its LowerHex implementation when Debug-formatted.
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Causes self to use its Octal implementation when Debug-formatted.
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Causes self to use its UpperExp implementation when Debug-formatted.
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fn fmt_list(self) -> FmtList<Self>where &'a Self: for<'a> IntoIterator,

Formats each item in a sequence. Read more
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impl<T> From<T> for T

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Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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Calls U::from(self).

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