Struct curve25519_dalek::edwards::CompressedEdwardsY

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pub struct CompressedEdwardsY(pub [u8; 32]);

Expand description

In “Edwards y” / “Ed25519” format, the curve point \((x,y)\) is determined by the \(y\)-coordinate and the sign of \(x\).

The first 255 bits of a CompressedEdwardsY represent the \(y\)-coordinate. The high bit of the 32nd byte gives the sign of \(x\).

Tuple Fields

0: [u8; 32]

Implementations

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impl CompressedEdwardsY

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pub fn as_bytes(&self) -> &[u8 ; 32]

View this CompressedEdwardsY as an array of bytes.

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pub fn to_bytes(&self) -> [u8 ; 32]

Copy this CompressedEdwardsY to an array of bytes.

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pub fn decompress(&self) -> Option<EdwardsPoint>

Attempt to decompress to an EdwardsPoint.

Returns None if the input is not the \(y\)-coordinate of a curve point.

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impl CompressedEdwardsY

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pub fn from_slice(bytes: &[u8 ]) -> CompressedEdwardsY

Construct a CompressedEdwardsY from a slice of bytes.

Panics

If the input bytes slice does not have a length of 32.

Trait Implementations

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impl Clone for CompressedEdwardsY

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fn clone(&self) -> CompressedEdwardsY

Returns a copy of the value. Read more

1.0.0 · source

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl ConstantTimeEq for CompressedEdwardsY

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fn ct_eq(&self, other: &CompressedEdwardsY) -> Choice

Determine if two items are equal. Read more

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impl Debug for CompressedEdwardsY

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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 Default for CompressedEdwardsY

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fn default() -> CompressedEdwardsY

Returns the “default value” for a type. Read more

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impl Hash for CompressedEdwardsY

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

Feeds this value into the given Hasher. Read more

1.3.0 · source

fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,

Feeds a slice of this type into the given Hasher. Read more

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impl Identity for CompressedEdwardsY

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fn identity() -> CompressedEdwardsY

Returns the identity element of the curve. Can be used as a constructor. Read more

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impl PartialEq<CompressedEdwardsY> for CompressedEdwardsY

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

This method tests for self and other values to be equal, and is used by ==. Read more

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

This method tests for !=.

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impl Zeroize for CompressedEdwardsY

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fn zeroize(&mut self)

Reset this CompressedEdwardsY to the compressed form of the identity element.

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impl StructuralPartialEq for CompressedEdwardsY

Auto Trait Implementations

impl RefUnwindSafe for CompressedEdwardsY

impl Send for CompressedEdwardsY

impl Sync for CompressedEdwardsY

impl Unpin for CompressedEdwardsY

impl UnwindSafe for CompressedEdwardsY

Blanket Implementations

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impl<T> Any for T where
T: 'static + ?Sized,

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pub 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,

const: unstable · source

pub 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,

const: unstable · source

pub fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T, U> Cast for T where
U: FromCast<T>,

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pub fn cast(self) -> U

Numeric cast from self to T.

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impl<T> From<T> for T

const: unstable · source

pub fn from(t: T) -> T

Performs the conversion.

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impl<T> FromBits<T> for T

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pub fn from_bits(t: T) -> T

Safe lossless bitwise transmute from T to Self.

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impl<T> FromCast<T> for T

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pub fn from_cast(t: T) -> T

Numeric cast from T to Self.

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impl<T, U> Into for T where
U: From<T>,

const: unstable · source

pub fn into(self) -> U

Performs the conversion.

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impl<T, U> IntoBits for T where
U: FromBits<T>,

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pub fn into_bits(self) -> U

Safe lossless bitwise transmute from self to T.

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impl<T> IsIdentity for T where
T: ConstantTimeEq + Identity,

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fn is_identity(&self) -> bool

Return true if this element is the identity element of the curve.

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impl<T> Same<T> for T

type Output = T

Should always be Self

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impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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pub fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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pub fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Struct curve25519_dalek::edwards::CompressedEdwardsY

Tuple Fields

Implementations

impl CompressedEdwardsY

pub fn as_bytes(&self) -> &[u8; 32]

pub fn to_bytes(&self) -> [u8; 32]

pub fn decompress(&self) -> Option<EdwardsPoint>

impl CompressedEdwardsY

pub fn from_slice(bytes: &[u8]) -> CompressedEdwardsY

Trait Implementations

impl Clone for CompressedEdwardsY

fn clone(&self) -> CompressedEdwardsY

fn clone_from(&mut self, source: &Self)

impl ConstantTimeEq for CompressedEdwardsY

fn ct_eq(&self, other: &CompressedEdwardsY) -> Choice

impl Debug for CompressedEdwardsY

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

impl Default for CompressedEdwardsY

fn default() -> CompressedEdwardsY

impl Hash for CompressedEdwardsY

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

fn hash_slice<H>(data: &[Self], state: &mut H) where H: Hasher,

impl Identity for CompressedEdwardsY

fn identity() -> CompressedEdwardsY

impl PartialEq<CompressedEdwardsY> for CompressedEdwardsY

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

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

impl Zeroize for CompressedEdwardsY

fn zeroize(&mut self)

impl Copy for CompressedEdwardsY

impl Eq for CompressedEdwardsY

impl StructuralEq for CompressedEdwardsY

impl StructuralPartialEq for CompressedEdwardsY

Auto Trait Implementations

impl RefUnwindSafe for CompressedEdwardsY

impl Send for CompressedEdwardsY

impl Sync for CompressedEdwardsY

impl Unpin for CompressedEdwardsY

impl UnwindSafe for CompressedEdwardsY

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

pub fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

pub fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

pub fn borrow_mut(&mut self) -> &mut T

impl<T, U> Cast<U> for T where U: FromCast<T>,

pub fn cast(self) -> U

impl<T> From<T> for T

pub fn from(t: T) -> T

impl<T> FromBits<T> for T

pub fn from_bits(t: T) -> T

impl<T> FromCast<T> for T

pub fn from_cast(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

pub fn into(self) -> U

impl<T, U> IntoBits<U> for T where U: FromBits<T>,

pub fn into_bits(self) -> U

impl<T> IsIdentity for T where T: ConstantTimeEq + Identity,

fn is_identity(&self) -> bool

impl<T> Same<T> for T

type Output = T

impl<T> ToOwned for T where T: Clone,

type Owned = T

pub fn to_owned(&self) -> T

pub fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

pub fn as_bytes(&self) -> &[u8 ; 32]

pub fn to_bytes(&self) -> [u8 ; 32]

pub fn from_slice(bytes: &[u8 ]) -> CompressedEdwardsY

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

fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<T, U> Cast<U> for T where
U: FromCast<T>,

impl<T, U> Into<U> for T where
U: From<T>,

impl<T, U> IntoBits<U> for T where
U: FromBits<T>,

impl<T> IsIdentity for T where
T: ConstantTimeEq + Identity,

impl<T> ToOwned for T where
T: Clone,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,