Struct ed448_rust::PublicKey

pub struct PublicKey(_);

This is a public key. Should be distributed.

You can extract a PublicKey by calling Self::from().

Implementations

impl PublicKey

#[must_use]pub fn as_byte(&self) -> [u8; 57]

Convert the public key to an easily exportable format.

pub fn verify(&self, msg: &[u8], sign: &[u8], ctx: Option<&[u8]>) -> Result<()>

Verify signature with public key.

Example

use ed448_rust::{PublicKey, Ed448Error};
let message = b"Signed message to verify";
let public_key = retrieve_pubkey();
let signature = retrieve_signature();
match public_key.verify(message, &signature, None) {
    Ok(()) => {
        // Signature OK, use the message
    }
    Err(Ed448Error::InvalidSignature) => {
        // The verification of the signature is invalid
    }
    Err(Ed448Error::ContextTooLong) => {
        // The used context is more than 255 bytes length
    }
    Err(Ed448Error::WrongSignatureLength) => {
        // The signature is not 144 bytes length
    }
    Err(_) => unreachable!()
}

Errors

• Ed448Error::InvalidSignature if the signature is not valid, either the public key or the signature used are not the right, or the message has been altered.
• Ed448Error::ContextTooLong if the optional context is more than 255 byte length.
• Ed448Error::WrongSignatureLength if the signature is not SIG_LENGTH byte.

pub fn verify_ph(
    &self,
    msg: &[u8],
    sign: &[u8],
    ctx: Option<&[u8]>
) -> Result<()>

Verify signature with public key. Message is pre-hashed before checked.

See PublicKey::verify for more information.

Errors

• Ed448Error::InvalidSignature if the signature is not valid, either the public key or the signature used are not the right, or the message has been altered.
• Ed448Error::ContextTooLong if the optional context is more than 255 byte length.
• Ed448Error::WrongSignatureLength if the signature is not SIG_LENGTH byte.

Trait Implementations

impl Clone for PublicKey

fn clone(&self) -> PublicKey

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PublicKey

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

Formats the value using the given formatter.

impl From<&'_ [u8; 57]> for PublicKey

fn from(array: &[u8; 57]) -> Self

Performs the conversion.

impl From<&'_ PrivateKey> for PublicKey

Instantiate a PublicKey from the PrivateKey.

fn from(private_key: &PrivateKey) -> Self

Performs the conversion.

impl From<[u8; 57]> for PublicKey

fn from(array: [u8; 57]) -> Self

Performs the conversion.

impl TryFrom<&'_ [u8]> for PublicKey

type Error = Ed448Error

The type returned in the event of a conversion error.

fn try_from(array: &[u8]) -> Result<Self, Self::Error>

Performs the conversion.