Struct PublicKey 

pub struct PublicKey {
    pub point: Point,
}

A secp256k1 public key simply wraps around a curve point.

Fields

point: Point

Implementations

impl PublicKey

pub fn decode(buf: &[u8]) -> Option<Self>

Decodes a public key from bytes.

This function accepts both compressed (33 bytes) and uncompressed (65 bytes) formats. The point is always verified to be a valid curve point. Note that the neutral point (the “point-at-infinity”) is explicitly rejected.

pub fn encode_compressed(self) -> [u8; 33]

Encodes this public key into the compressed format (33 bytes).

The first byte of the encoding always has value 0x02 or 0x03.

pub fn encode_uncompressed(self) -> [u8; 65]

Encodes this public key into the compressed format (65 bytes).

The first byte of the encoding always has value 0x04.

pub fn verify_hash(self, sig: &[u8], hv: &[u8]) -> bool

Verifies a signature on a given hashed message.

The signature (sig) MUST have an even length; the first half of the signature is interpreted as the “r” integer, while the second half is “s” (both use unsigned big-endian convention). Out-of-range values are rejected. The hashed message is provided as hv; it is nominally the output of a suitable hash function (often SHA-256) computed over the actual message. This function can tolerate arbitrary hash output lengths; however, for proper security, the hash output must not be too short, and it must be an actual hash function output, not raw structured data.

Note: this function is not constant-time; it assumes that the public key and signature value are public data.

Trait Implementations

impl Clone for PublicKey

fn clone(&self) -> PublicKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PublicKey

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

Formats the value using the given formatter.

impl Copy for PublicKey