Struct halo2_proofs::transcript::Challenge255
source · [−]pub struct Challenge255<C: CurveAffine>(_, _);
Expand description
A 255-bit challenge.
Methods from Deref<Target = [u8; 32]>
1.57.0 · sourcepub fn as_slice(&self) -> &[T]ⓘNotable traits for &mut [u8]impl<'_> Write for &mut [u8]impl<'_> Read for &[u8]
pub fn as_slice(&self) -> &[T]ⓘNotable traits for &mut [u8]impl<'_> Write for &mut [u8]impl<'_> Read for &[u8]
Returns a slice containing the entire array. Equivalent to &s[..]
.
sourcepub fn each_ref(&self) -> [&T; N]
🔬 This is a nightly-only experimental API. (array_methods
)
pub fn each_ref(&self) -> [&T; N]
array_methods
)Borrows each element and returns an array of references with the same
size as self
.
Example
#![feature(array_methods)]
let floats = [3.1, 2.7, -1.0];
let float_refs: [&f64; 3] = floats.each_ref();
assert_eq!(float_refs, [&3.1, &2.7, &-1.0]);
This method is particularly useful if combined with other methods, like
map
. This way, you can avoid moving the original
array if its elements are not Copy
.
#![feature(array_methods)]
let strings = ["Ferris".to_string(), "♥".to_string(), "Rust".to_string()];
let is_ascii = strings.each_ref().map(|s| s.is_ascii());
assert_eq!(is_ascii, [true, false, true]);
// We can still access the original array: it has not been moved.
assert_eq!(strings.len(), 3);
sourcepub fn split_array_ref<const M: usize>(&self) -> (&[T; M], &[T])
🔬 This is a nightly-only experimental API. (split_array
)
pub fn split_array_ref<const M: usize>(&self) -> (&[T; M], &[T])
split_array
)Divides one array reference into two at an index.
The first will contain all indices from [0, M)
(excluding
the index M
itself) and the second will contain all
indices from [M, N)
(excluding the index N
itself).
Panics
Panics if M > N
.
Examples
#![feature(split_array)]
let v = [1, 2, 3, 4, 5, 6];
{
let (left, right) = v.split_array_ref::<0>();
assert_eq!(left, &[]);
assert_eq!(right, &[1, 2, 3, 4, 5, 6]);
}
{
let (left, right) = v.split_array_ref::<2>();
assert_eq!(left, &[1, 2]);
assert_eq!(right, &[3, 4, 5, 6]);
}
{
let (left, right) = v.split_array_ref::<6>();
assert_eq!(left, &[1, 2, 3, 4, 5, 6]);
assert_eq!(right, &[]);
}
sourcepub fn rsplit_array_ref<const M: usize>(&self) -> (&[T], &[T; M])
🔬 This is a nightly-only experimental API. (split_array
)
pub fn rsplit_array_ref<const M: usize>(&self) -> (&[T], &[T; M])
split_array
)Divides one array reference into two at an index from the end.
The first will contain all indices from [0, N - M)
(excluding
the index N - M
itself) and the second will contain all
indices from [N - M, N)
(excluding the index N
itself).
Panics
Panics if M > N
.
Examples
#![feature(split_array)]
let v = [1, 2, 3, 4, 5, 6];
{
let (left, right) = v.rsplit_array_ref::<0>();
assert_eq!(left, &[1, 2, 3, 4, 5, 6]);
assert_eq!(right, &[]);
}
{
let (left, right) = v.rsplit_array_ref::<2>();
assert_eq!(left, &[1, 2, 3, 4]);
assert_eq!(right, &[5, 6]);
}
{
let (left, right) = v.rsplit_array_ref::<6>();
assert_eq!(left, &[]);
assert_eq!(right, &[1, 2, 3, 4, 5, 6]);
}
Trait Implementations
sourceimpl<C: Clone + CurveAffine> Clone for Challenge255<C>
impl<C: Clone + CurveAffine> Clone for Challenge255<C>
sourcefn clone(&self) -> Challenge255<C>
fn clone(&self) -> Challenge255<C>
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
sourceimpl<C: Debug + CurveAffine> Debug for Challenge255<C>
impl<C: Debug + CurveAffine> Debug for Challenge255<C>
sourceimpl<C: CurveAffine> Deref for Challenge255<C>
impl<C: CurveAffine> Deref for Challenge255<C>
sourceimpl<C: CurveAffine> EncodedChallenge<C> for Challenge255<C>
impl<C: CurveAffine> EncodedChallenge<C> for Challenge255<C>
type Input = [u8; 64]
type Input = [u8; 64]
The Input type used to derive the challenge encoding. For example, an input from the Poseidon hash would be a base field element; an input from the Blake2b hash would be a [u8; 64]. Read more
sourcefn new(challenge_input: &[u8; 64]) -> Self
fn new(challenge_input: &[u8; 64]) -> Self
Get an encoded challenge from a given input challenge.
sourcefn get_scalar(&self) -> C::Scalar
fn get_scalar(&self) -> C::Scalar
Get a scalar field element from an encoded challenge.
sourcefn as_challenge_scalar<T>(&self) -> ChallengeScalar<C, T>
fn as_challenge_scalar<T>(&self) -> ChallengeScalar<C, T>
Cast an encoded challenge as a typed ChallengeScalar
.
sourceimpl<R: Read, C: CurveAffine> Transcript<C, Challenge255<C>> for Blake2bRead<R, C, Challenge255<C>>
impl<R: Read, C: CurveAffine> Transcript<C, Challenge255<C>> for Blake2bRead<R, C, Challenge255<C>>
sourcefn squeeze_challenge(&mut self) -> Challenge255<C>
fn squeeze_challenge(&mut self) -> Challenge255<C>
Squeeze an encoded verifier challenge from the transcript.
sourcefn common_point(&mut self, point: C) -> Result<()>
fn common_point(&mut self, point: C) -> Result<()>
Writing the point to the transcript without writing it to the proof, treating it as a common input. Read more
sourcefn common_scalar(&mut self, scalar: C::Scalar) -> Result<()>
fn common_scalar(&mut self, scalar: C::Scalar) -> Result<()>
Writing the scalar to the transcript without writing it to the proof, treating it as a common input. Read more
sourcefn squeeze_challenge_scalar<T>(&mut self) -> ChallengeScalar<C, T>
fn squeeze_challenge_scalar<T>(&mut self) -> ChallengeScalar<C, T>
Squeeze a typed challenge (in the scalar field) from the transcript.
sourceimpl<W: Write, C: CurveAffine> Transcript<C, Challenge255<C>> for Blake2bWrite<W, C, Challenge255<C>>
impl<W: Write, C: CurveAffine> Transcript<C, Challenge255<C>> for Blake2bWrite<W, C, Challenge255<C>>
sourcefn squeeze_challenge(&mut self) -> Challenge255<C>
fn squeeze_challenge(&mut self) -> Challenge255<C>
Squeeze an encoded verifier challenge from the transcript.
sourcefn common_point(&mut self, point: C) -> Result<()>
fn common_point(&mut self, point: C) -> Result<()>
Writing the point to the transcript without writing it to the proof, treating it as a common input. Read more
sourcefn common_scalar(&mut self, scalar: C::Scalar) -> Result<()>
fn common_scalar(&mut self, scalar: C::Scalar) -> Result<()>
Writing the scalar to the transcript without writing it to the proof, treating it as a common input. Read more
sourcefn squeeze_challenge_scalar<T>(&mut self) -> ChallengeScalar<C, T>
fn squeeze_challenge_scalar<T>(&mut self) -> ChallengeScalar<C, T>
Squeeze a typed challenge (in the scalar field) from the transcript.
sourceimpl<R: Read, C: CurveAffine> TranscriptRead<C, Challenge255<C>> for Blake2bRead<R, C, Challenge255<C>>
impl<R: Read, C: CurveAffine> TranscriptRead<C, Challenge255<C>> for Blake2bRead<R, C, Challenge255<C>>
sourcefn read_point(&mut self) -> Result<C>
fn read_point(&mut self) -> Result<C>
Read a curve point from the prover.
sourcefn read_scalar(&mut self) -> Result<C::Scalar>
fn read_scalar(&mut self) -> Result<C::Scalar>
Read a curve scalar from the prover.
sourceimpl<W: Write, C: CurveAffine> TranscriptWrite<C, Challenge255<C>> for Blake2bWrite<W, C, Challenge255<C>>
impl<W: Write, C: CurveAffine> TranscriptWrite<C, Challenge255<C>> for Blake2bWrite<W, C, Challenge255<C>>
sourcefn write_point(&mut self, point: C) -> Result<()>
fn write_point(&mut self, point: C) -> Result<()>
Write a curve point to the proof and the transcript.
sourcefn write_scalar(&mut self, scalar: C::Scalar) -> Result<()>
fn write_scalar(&mut self, scalar: C::Scalar) -> Result<()>
Write a scalar to the proof and the transcript.
impl<C: Copy + CurveAffine> Copy for Challenge255<C>
Auto Trait Implementations
impl<C> RefUnwindSafe for Challenge255<C> where
C: RefUnwindSafe,
impl<C> Send for Challenge255<C>
impl<C> Sync for Challenge255<C>
impl<C> Unpin for Challenge255<C> where
C: Unpin,
impl<C> UnwindSafe for Challenge255<C> where
C: UnwindSafe,
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<T> FmtForward for T
impl<T> FmtForward for T
fn fmt_binary(self) -> FmtBinary<Self> where
Self: Binary,
fn fmt_binary(self) -> FmtBinary<Self> where
Self: Binary,
Causes self
to use its Binary
implementation when Debug
-formatted. Read more
fn fmt_display(self) -> FmtDisplay<Self> where
Self: Display,
fn fmt_display(self) -> FmtDisplay<Self> where
Self: Display,
Causes self
to use its Display
implementation when
Debug
-formatted. Read more
fn fmt_lower_exp(self) -> FmtLowerExp<Self> where
Self: LowerExp,
fn fmt_lower_exp(self) -> FmtLowerExp<Self> where
Self: LowerExp,
Causes self
to use its LowerExp
implementation when
Debug
-formatted. Read more
fn fmt_lower_hex(self) -> FmtLowerHex<Self> where
Self: LowerHex,
fn fmt_lower_hex(self) -> FmtLowerHex<Self> where
Self: LowerHex,
Causes self
to use its LowerHex
implementation when
Debug
-formatted. Read more
fn fmt_octal(self) -> FmtOctal<Self> where
Self: Octal,
fn fmt_octal(self) -> FmtOctal<Self> where
Self: Octal,
Causes self
to use its Octal
implementation when Debug
-formatted. Read more
fn fmt_pointer(self) -> FmtPointer<Self> where
Self: Pointer,
fn fmt_pointer(self) -> FmtPointer<Self> where
Self: Pointer,
Causes self
to use its Pointer
implementation when
Debug
-formatted. Read more
fn fmt_upper_exp(self) -> FmtUpperExp<Self> where
Self: UpperExp,
fn fmt_upper_exp(self) -> FmtUpperExp<Self> where
Self: UpperExp,
Causes self
to use its UpperExp
implementation when
Debug
-formatted. Read more
fn fmt_upper_hex(self) -> FmtUpperHex<Self> where
Self: UpperHex,
fn fmt_upper_hex(self) -> FmtUpperHex<Self> where
Self: UpperHex,
Causes self
to use its UpperHex
implementation when
Debug
-formatted. Read more
fn fmt_list(self) -> FmtList<Self> where
&'a Self: for<'a> IntoIterator,
fn fmt_list(self) -> FmtList<Self> where
&'a Self: for<'a> IntoIterator,
Formats each item in a sequence. Read more
impl<T> Pipe for T where
T: ?Sized,
impl<T> Pipe for T where
T: ?Sized,
fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> R
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Pipes by value. This is generally the method you want to use. Read more
fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> R where
R: 'a,
fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> R where
R: 'a,
Borrows self
and passes that borrow into the pipe function. Read more
fn pipe_ref_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> R where
R: 'a,
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R: 'a,
Mutably borrows self
and passes that borrow into the pipe function. Read more
fn pipe_borrow<'a, B, R>(&'a self, func: impl FnOnce(&'a B) -> R) -> R where
Self: Borrow<B>,
B: 'a + ?Sized,
R: 'a,
fn pipe_borrow<'a, B, R>(&'a self, func: impl FnOnce(&'a B) -> R) -> R where
Self: Borrow<B>,
B: 'a + ?Sized,
R: 'a,
Borrows self
, then passes self.borrow()
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fn pipe_borrow_mut<'a, B, R>(
&'a mut self,
func: impl FnOnce(&'a mut B) -> R
) -> R where
Self: BorrowMut<B>,
B: 'a + ?Sized,
R: 'a,
fn pipe_borrow_mut<'a, B, R>(
&'a mut self,
func: impl FnOnce(&'a mut B) -> R
) -> R where
Self: BorrowMut<B>,
B: 'a + ?Sized,
R: 'a,
Mutably borrows self
, then passes self.borrow_mut()
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U: 'a + ?Sized,
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Self: AsRef<U>,
U: 'a + ?Sized,
R: 'a,
Borrows self
, then passes self.as_ref()
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fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> R where
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U: 'a + ?Sized,
R: 'a,
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Self: AsMut<U>,
U: 'a + ?Sized,
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Self: Deref<Target = T>,
T: 'a + ?Sized,
R: 'a,
fn pipe_deref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R where
Self: Deref<Target = T>,
T: 'a + ?Sized,
R: 'a,
Borrows self
, then passes self.deref()
into the pipe function.
impl<T> Pointable for T
impl<T> Pointable for T
impl<T> Tap for T
impl<T> Tap for T
fn tap_borrow<B>(self, func: impl for<'_> FnOnce(&B)) -> Self where
Self: Borrow<B>,
B: ?Sized,
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Self: Borrow<B>,
B: ?Sized,
Immutable access to the Borrow<B>
of a value. Read more
fn tap_borrow_mut<B>(self, func: impl for<'_> FnOnce(&mut B)) -> Self where
Self: BorrowMut<B>,
B: ?Sized,
fn tap_borrow_mut<B>(self, func: impl for<'_> FnOnce(&mut B)) -> Self where
Self: BorrowMut<B>,
B: ?Sized,
Mutable access to the BorrowMut<B>
of a value. Read more
fn tap_ref<R>(self, func: impl for<'_> FnOnce(&R)) -> Self where
Self: AsRef<R>,
R: ?Sized,
fn tap_ref<R>(self, func: impl for<'_> FnOnce(&R)) -> Self where
Self: AsRef<R>,
R: ?Sized,
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fn tap_ref_mut<R>(self, func: impl for<'_> FnOnce(&mut R)) -> Self where
Self: AsMut<R>,
R: ?Sized,
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Self: AsMut<R>,
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fn tap_deref<T>(self, func: impl for<'_> FnOnce(&T)) -> Self where
Self: Deref<Target = T>,
T: ?Sized,
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Immutable access to the Deref::Target
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fn tap_deref_mut<T>(self, func: impl for<'_> FnOnce(&mut T)) -> Self where
Self: DerefMut<Target = T> + Deref,
T: ?Sized,
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fn tap_dbg(self, func: impl for<'_> FnOnce(&Self)) -> Self
fn tap_dbg(self, func: impl for<'_> FnOnce(&Self)) -> Self
Calls .tap()
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fn tap_mut_dbg(self, func: impl for<'_> FnOnce(&mut Self)) -> Self
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Calls .tap_mut()
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fn tap_borrow_dbg<B>(self, func: impl for<'_> FnOnce(&B)) -> Self where
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Calls .tap_borrow()
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fn tap_borrow_mut_dbg<B>(self, func: impl for<'_> FnOnce(&mut B)) -> Self where
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Calls .tap_borrow_mut()
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fn tap_ref_dbg<R>(self, func: impl for<'_> FnOnce(&R)) -> Self where
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fn tap_ref_mut_dbg<R>(self, func: impl for<'_> FnOnce(&mut R)) -> Self where
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Calls .tap_ref_mut()
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