Struct jubjub::ExtendedPoint [−][src]
pub struct ExtendedPoint { /* fields omitted */ }
Expand description
This represents an extended point (U, V, Z, T1, T2)
with Z
nonzero, corresponding to the affine point
(U/Z, V/Z)
. We always have T1 * T2 = UV/Z
.
You can do the following things with a point in this form:
- Convert it into a point in the affine form.
- Add it to an
ExtendedPoint
,AffineNielsPoint
orExtendedNielsPoint
. - Double it using
double()
. - Compare it with another extended point using
PartialEq
orct_eq()
.
Implementations
Determines if this point is the identity.
Determines if this point is of small order.
Determines if this point is torsion free and so is contained in the prime order subgroup.
Determines if this point is prime order, or in other words that
the smallest scalar multiplied by this point that produces the
identity is r
. This is equivalent to checking that the point
is both torsion free and not the identity.
Multiplies this element by the cofactor 8
.
Performs a pre-processing step that produces an ExtendedNielsPoint
for use in multiple additions.
Computes the doubling of a point more efficiently than a point can be added to itself.
Trait Implementations
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the +
operator.
Performs the +
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the +
operator.
Performs the +
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the +
operator.
Performs the +
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the +
operator.
Performs the +
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the +
operator.
Performs the +
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the +
operator.
Performs the +
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the +
operator.
Performs the +
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the +
operator.
Performs the +
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the +
operator.
Performs the +
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the +
operator.
Performs the +
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the +
operator.
Performs the +
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the +
operator.
Performs the +
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the +
operator.
Performs the +
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the +
operator.
Performs the +
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the +
operator.
Performs the +
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the +
operator.
Performs the +
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the +
operator.
Performs the +
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the +
operator.
Performs the +
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the +
operator.
Performs the +
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the +
operator.
Performs the +
operation. Read more
Performs the +=
operation. Read more
Performs the +=
operation. Read more
Performs the +=
operation. Read more
Performs the +=
operation. Read more
Performs the +=
operation. Read more
Performs the +=
operation. Read more
Performs the +=
operation. Read more
Performs the +=
operation. Read more
Performs the +=
operation. Read more
Performs the +=
operation. Read more
type Affine = AffinePoint
type Subgroup = SubgroupPoint
type Subgroup = SubgroupPoint
The large prime-order subgroup in which cryptographic operations are performed.
If Self
implements PrimeGroup
, then Self::Subgroup
may be Self
. Read more
Maps self
to the prime-order subgroup by multiplying this element by some
k
-multiple of the cofactor. Read more
Returns self
if it is contained in the prime-order subgroup. Read more
Determines if this element is “torsion free”, i.e., is contained in the prime-order subgroup. Read more
Determines if this element is of small order. Read more
type AffineRepr = AffinePoint
type AffineRepr = AffinePoint
The affine representation for this elliptic curve.
Converts a batch of projective elements into affine elements. This function will
panic if p.len() != q.len()
. Read more
Converts this element into its affine representation.
Returns the identity.
Constructs an affine point from an extended point
using the map (U, V, Z, T1, T2) => (U/Z, V/Z)
as Z is always nonzero. This requires a field inversion
and so it is recommended to perform these in a batch
using batch_normalize
instead.
Performs the conversion.
Constructs an extended point (with Z = 1
) from
an affine point using the map (u, v) => (u, v, 1, u, v)
.
Performs the conversion.
Performs the conversion.
Returns an element chosen uniformly at random from the non-identity elements of this group. Read more
Determines if this point is the identity.
Attempts to deserialize a group element from its encoding.
Attempts to deserialize a group element, not checking if the element is valid. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the *
operator.
Performs the *
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the *
operator.
Performs the *
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the *
operator.
Performs the *
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the *
operator.
Performs the *
operation. Read more
Performs the *=
operation. Read more
Performs the *=
operation. Read more
Computes the negation of a point P = (U, V, Z, T)
as -P = (-U, V, Z, -T1, T2)
. The choice of T1
is made without loss of generality.
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the -
operator.
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the -
operator.
Performs the -
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the -
operator.
Performs the -
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the -
operator.
Performs the -
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the -
operator.
Performs the -
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the -
operator.
Performs the -
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the -
operator.
Performs the -
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the -
operator.
Performs the -
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the -
operator.
Performs the -
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the -
operator.
Performs the -
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the -
operator.
Performs the -
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the -
operator.
Performs the -
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the -
operator.
Performs the -
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the -
operator.
Performs the -
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the -
operator.
Performs the -
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the -
operator.
Performs the -
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the -
operator.
Performs the -
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the -
operator.
Performs the -
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the -
operator.
Performs the -
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the -
operator.
Performs the -
operation. Read more
type Output = ExtendedPoint
type Output = ExtendedPoint
The resulting type after applying the -
operator.
Performs the -
operation. Read more
Performs the -=
operation. Read more
Performs the -=
operation. Read more
Performs the -=
operation. Read more
Performs the -=
operation. Read more
Performs the -=
operation. Read more
Performs the -=
operation. Read more
Performs the -=
operation. Read more
Performs the -=
operation. Read more
Performs the -=
operation. Read more
Performs the -=
operation. Read more
Recommends a wNAF window size given the number of scalars you intend to multiply a base by. Always returns a number between 2 and 22, inclusive. Read more
Auto Trait Implementations
impl RefUnwindSafe for ExtendedPoint
impl Send for ExtendedPoint
impl Sync for ExtendedPoint
impl Unpin for ExtendedPoint
impl UnwindSafe for ExtendedPoint
Blanket Implementations
Mutably borrows from an owned value. Read more
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.
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
Causes self
to use its Octal
implementation when Debug
-formatted.
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
impl<T> Pipe for T where
T: ?Sized,
impl<T> Pipe for T where
T: ?Sized,
Pipes by value. This is generally the method you want to use. Read more
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,
fn pipe_ref_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> R where
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>,
R: 'a,
B: 'a + ?Sized,
fn pipe_borrow<'a, B, R>(&'a self, func: impl FnOnce(&'a B) -> R) -> R where
Self: Borrow<B>,
R: 'a,
B: 'a + ?Sized,
Borrows self
, then passes self.borrow()
into the pipe function. Read more
fn pipe_borrow_mut<'a, B, R>(
&'a mut self,
func: impl FnOnce(&'a mut B) -> R
) -> R where
Self: BorrowMut<B>,
R: 'a,
B: 'a + ?Sized,
fn pipe_borrow_mut<'a, B, R>(
&'a mut self,
func: impl FnOnce(&'a mut B) -> R
) -> R where
Self: BorrowMut<B>,
R: 'a,
B: 'a + ?Sized,
Mutably borrows self
, then passes self.borrow_mut()
into the pipe
function. Read more
fn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> R where
Self: AsRef<U>,
R: 'a,
U: 'a + ?Sized,
fn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> R where
Self: AsRef<U>,
R: 'a,
U: 'a + ?Sized,
Borrows self
, then passes self.as_ref()
into the pipe function.
fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> R where
Self: AsMut<U>,
R: 'a,
U: 'a + ?Sized,
fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> R where
Self: AsMut<U>,
R: 'a,
U: 'a + ?Sized,
Mutably borrows self
, then passes self.as_mut()
into the pipe
function. Read more
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,
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.
fn tap_borrow<B>(self, func: impl FnOnce(&B)) -> Self where
Self: Borrow<B>,
B: ?Sized,
fn tap_borrow<B>(self, func: impl FnOnce(&B)) -> Self where
Self: Borrow<B>,
B: ?Sized,
Immutable access to the Borrow<B>
of a value. Read more
fn tap_borrow_mut<B>(self, func: impl FnOnce(&mut B)) -> Self where
Self: BorrowMut<B>,
B: ?Sized,
fn tap_borrow_mut<B>(self, func: impl FnOnce(&mut B)) -> Self where
Self: BorrowMut<B>,
B: ?Sized,
Mutable access to the BorrowMut<B>
of a value. Read more
Immutable access to the AsRef<R>
view of a value. Read more
fn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Self where
Self: AsMut<R>,
R: ?Sized,
fn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Self where
Self: AsMut<R>,
R: ?Sized,
Mutable access to the AsMut<R>
view of a value. Read more
Immutable access to the Deref::Target
of a value. Read more
fn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Self where
Self: DerefMut<Target = T> + Deref,
T: ?Sized,
fn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Self where
Self: DerefMut<Target = T> + Deref,
T: ?Sized,
Mutable access to the Deref::Target
of a value. Read more
Calls .tap()
only in debug builds, and is erased in release builds.
fn tap_mut_dbg(self, func: impl FnOnce(&mut Self)) -> Self
fn tap_mut_dbg(self, func: impl FnOnce(&mut Self)) -> Self
Calls .tap_mut()
only in debug builds, and is erased in release
builds. Read more
fn tap_borrow_dbg<B>(self, func: impl FnOnce(&B)) -> Self where
Self: Borrow<B>,
B: ?Sized,
fn tap_borrow_dbg<B>(self, func: impl FnOnce(&B)) -> Self where
Self: Borrow<B>,
B: ?Sized,
Calls .tap_borrow()
only in debug builds, and is erased in release
builds. Read more
fn tap_borrow_mut_dbg<B>(self, func: impl FnOnce(&mut B)) -> Self where
Self: BorrowMut<B>,
B: ?Sized,
fn tap_borrow_mut_dbg<B>(self, func: impl FnOnce(&mut B)) -> Self where
Self: BorrowMut<B>,
B: ?Sized,
Calls .tap_borrow_mut()
only in debug builds, and is erased in release
builds. Read more
fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self where
Self: AsRef<R>,
R: ?Sized,
fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self where
Self: AsRef<R>,
R: ?Sized,
Calls .tap_ref()
only in debug builds, and is erased in release
builds. Read more
fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self where
Self: AsMut<R>,
R: ?Sized,
fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self where
Self: AsMut<R>,
R: ?Sized,
Calls .tap_ref_mut()
only in debug builds, and is erased in release
builds. Read more
fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self where
Self: Deref<Target = T>,
T: ?Sized,
fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self where
Self: Deref<Target = T>,
T: ?Sized,
Calls .tap_deref()
only in debug builds, and is erased in release
builds. Read more