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BabyBearUnit

Struct BabyBearUnit 

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#[repr(transparent)]
pub struct BabyBearUnit(pub BabyBear);
Expand description

Transparent Unit wrapper around BabyBear.

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§0: BabyBear

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impl Add for BabyBearUnit

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type Output = BabyBearUnit

The resulting type after applying the + operator.
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fn add(self, rhs: Self) -> Self

Performs the + operation. Read more
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impl Clone for BabyBearUnit

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fn clone(&self) -> BabyBearUnit

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Copy for BabyBearUnit

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impl Debug for BabyBearUnit

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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 Deref for BabyBearUnit

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type Target = MontyField31<BabyBearParameters>

The resulting type after dereferencing.
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fn deref(&self) -> &Self::Target

Dereferences the value.
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impl EncodedSessionId for BabyBearUnit

Reads a byte string as BabyBear units, one element per byte.

This is what lets a sponge over BabyBearUnit be seeded from a session identifier: DuplexSponge implements DuplexSpongeInit over any alphabet that byte strings embed into. With it, ProverState::new works over BabyBear exactly as it does over bytes.

One element per byte rather than a denser packing: every element is then in [0, 256), so the map is injective by inspection and there is no remainder case to get wrong. A 32-byte session identifier costs 32 units, absorbed once per proof.

§Security

Like the identity embedding on bytes, this map is injective but not prefix-free across lengths: b"ab" maps to a prefix of b"abc". It is admissible where the byte length is fixed by the protocol — a session identifier is always 32 bytes — and a variable-length byte string must be length-prefixed by the caller.

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fn encode_bytes(bytes: &[u8]) -> impl AsRef<[Self]>

Reads bytes as a string of units.
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impl Eq for BabyBearUnit

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impl From<BabyBearUnit> for BabyBear

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fn from(value: BabyBearUnit) -> Self

Converts to this type from the input type.
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impl From<MontyField31<BabyBearParameters>> for BabyBearUnit

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fn from(value: BabyBear) -> Self

Converts to this type from the input type.
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impl Hash for BabyBearUnit

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl Mul for BabyBearUnit

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type Output = BabyBearUnit

The resulting type after applying the * operator.
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fn mul(self, rhs: Self) -> Self

Performs the * operation. Read more
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impl PartialEq for BabyBearUnit

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fn eq(&self, other: &BabyBearUnit) -> bool

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl Ring for BabyBearUnit

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const ONE: Self

The multiplicative identity.
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fn add(self, other: Self) -> Self

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fn mul(self, other: Self) -> Self

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impl StructuralPartialEq for BabyBearUnit

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impl Unit for BabyBearUnit

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const ZERO: Self

The zero element.

Auto Trait Implementations§

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> CloneToUninit for T
where T: Clone,

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

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> Dup for T
where T: Copy + Clone,

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fn dup(&self) -> T

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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> 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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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<P, T> Receiver for P
where P: Deref<Target = T> + ?Sized, T: ?Sized,

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type Target = T

🔬This is a nightly-only experimental API. (arbitrary_self_types)
The target type on which the method may be called.
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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> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

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

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.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more