Struct jubjub_schnorr::PublicKey

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pub struct PublicKey(/* private fields */);
Expand description

Structure representing a PublicKey, consisting of a JubJubExtended point on the JubJub curve. This public key allows for the verification of signatures created with its corresponding secret key without revealing the secret key itself.

§Examples

Generate a PublicKey from a SecretKey:

use jubjub_schnorr::{SecretKey, PublicKey};
use dusk_bls12_381::BlsScalar;
use rand::rngs::StdRng;
use rand::SeedableRng;

let mut rng = StdRng::seed_from_u64(12345);
let sk = SecretKey::random(&mut rng);
let pk = PublicKey::from(&sk);

Implementations§

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impl PublicKey

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pub fn verify(&self, sig: &Signature, message: BlsScalar) -> bool

Verifies that the given Schnorr Signature is valid.

This function computes a challenge hash c using the stored R point and the provided message, then performs the verification by checking that:

u * G + c * PK == R
§Parameters
§Returns

A boolean value indicating the validity of the Schnorr Signature.

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pub const fn from_raw_unchecked(key: JubJubExtended) -> Self

Create a PublicKey from its internal parts.

The public keys are generated from a bijective function that takes a secret keys domain. If keys are generated directly from curve points, there is no guarantee a secret key exists - in fact, the discrete logarithm property will guarantee the secret key cannot be extracted from this public key.

If you opt to generate the keys manually, be sure you have its secret counterpart - otherwise this key will be of no use.

Trait Implementations§

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impl AsRef<ExtendedPoint> for PublicKey

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fn as_ref(&self) -> &JubJubExtended

Converts this type into a shared reference of the (usually inferred) input type.
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impl Clone for PublicKey

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fn clone(&self) -> PublicKey

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 Debug for PublicKey

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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 PublicKey

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fn default() -> PublicKey

Returns the “default value” for a type. Read more
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impl From<&ExtendedPoint> for PublicKey

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fn from(p: &JubJubExtended) -> PublicKey

Converts to this type from the input type.
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impl From<&SecretKey> for PublicKey

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fn from(sk: &SecretKey) -> Self

Converts to this type from the input type.
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impl From<ExtendedPoint> for PublicKey

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fn from(p: JubJubExtended) -> PublicKey

Converts to this type from the input type.
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impl PartialEq for PublicKey

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serializable<32> for PublicKey

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type Error = Error

The type returned in the event of a conversion error.
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fn to_bytes(&self) -> [u8; 32]

Serialize Self into a [[u8; N]].
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fn from_bytes(bytes: &[u8; 32]) -> Result<Self, Error>

Deserialize a [&[u8; N]] into Self, it might be fail.
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const SIZE: usize = N

The size of
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impl Copy for PublicKey

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impl Eq for PublicKey

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impl StructuralPartialEq for PublicKey

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