curve25519_dalek::ristretto

Struct CompressedRistretto

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pub struct CompressedRistretto(pub [u8; 32]);
Expand description

A Ristretto point, in compressed wire format.

The Ristretto encoding is canonical, so two points are equal if and only if their encodings are equal.

Tuple Fields§

§0: [u8; 32]

Implementations§

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impl CompressedRistretto

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

Copy the bytes of this CompressedRistretto.

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

View this CompressedRistretto as an array of bytes.

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pub fn from_slice( bytes: &[u8], ) -> Result<CompressedRistretto, TryFromSliceError>

Construct a CompressedRistretto from a slice of bytes.

§Errors

Returns TryFromSliceError if the input bytes slice does not have a length of 32.

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

Attempt to decompress to an RistrettoPoint.

§Return

  • Some(RistrettoPoint) if self was the canonical encoding of a point;

  • None if self was not the canonical encoding of a point.

Trait Implementations§

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impl Clone for CompressedRistretto

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fn clone(&self) -> CompressedRistretto

Returns a copy 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 ConstantTimeEq for CompressedRistretto

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

Determine if two items are equal. Read more
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fn ct_ne(&self, other: &Self) -> Choice

Determine if two items are NOT equal. Read more
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impl Debug for CompressedRistretto

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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 CompressedRistretto

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fn default() -> CompressedRistretto

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

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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 Identity for CompressedRistretto

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fn identity() -> CompressedRistretto

Returns the identity element of the curve. Can be used as a constructor.
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impl PartialEq for CompressedRistretto

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl TryFrom<&[u8]> for CompressedRistretto

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type Error = TryFromSliceError

The type returned in the event of a conversion error.
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fn try_from(slice: &[u8]) -> Result<CompressedRistretto, TryFromSliceError>

Performs the conversion.
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impl Zeroize for CompressedRistretto

Available on crate feature zeroize only.
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fn zeroize(&mut self)

Zero out this object from memory using Rust intrinsics which ensure the zeroization operation is not “optimized away” by the compiler.
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impl Copy for CompressedRistretto

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impl Eq for CompressedRistretto

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impl StructuralPartialEq for CompressedRistretto

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impl<T> Any for T
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unsafe fn clone_to_uninit(&self, dst: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
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where Self: Binary,

Causes self to use its Binary implementation when Debug-formatted.
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fn fmt_display(self) -> FmtDisplay<Self>
where Self: Display,

Causes self to use its Display implementation when Debug-formatted.
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fn fmt_lower_exp(self) -> FmtLowerExp<Self>
where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.
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fn fmt_lower_hex(self) -> FmtLowerHex<Self>
where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.
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where Self: Octal,

Causes self to use its Octal implementation when Debug-formatted.
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where Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted.
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where Self: UpperHex,

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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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Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 32 bytes