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ed448.rs
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ed448.rs
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// This file is dual licensed under the terms of the Apache License, Version
// 2.0, and the BSD License. See the LICENSE file in the root of this repository
// for complete details.
use crate::backend::utils;
use crate::buf::CffiBuf;
use crate::error::{CryptographyError, CryptographyResult};
use crate::exceptions;
#[pyo3::prelude::pyclass(frozen, module = "cryptography.hazmat.bindings._rust.openssl.ed448")]
pub(crate) struct Ed448PrivateKey {
pkey: openssl::pkey::PKey<openssl::pkey::Private>,
}
#[pyo3::prelude::pyclass(frozen, module = "cryptography.hazmat.bindings._rust.openssl.ed448")]
pub(crate) struct Ed448PublicKey {
pkey: openssl::pkey::PKey<openssl::pkey::Public>,
}
#[pyo3::prelude::pyfunction]
fn generate_key() -> CryptographyResult<Ed448PrivateKey> {
Ok(Ed448PrivateKey {
pkey: openssl::pkey::PKey::generate_ed448()?,
})
}
pub(crate) fn private_key_from_pkey(
pkey: &openssl::pkey::PKeyRef<openssl::pkey::Private>,
) -> Ed448PrivateKey {
Ed448PrivateKey {
pkey: pkey.to_owned(),
}
}
pub(crate) fn public_key_from_pkey(
pkey: &openssl::pkey::PKeyRef<openssl::pkey::Public>,
) -> Ed448PublicKey {
Ed448PublicKey {
pkey: pkey.to_owned(),
}
}
#[pyo3::prelude::pyfunction]
fn from_private_bytes(data: CffiBuf<'_>) -> pyo3::PyResult<Ed448PrivateKey> {
let pkey =
openssl::pkey::PKey::private_key_from_raw_bytes(data.as_bytes(), openssl::pkey::Id::ED448)
.map_err(|_| {
pyo3::exceptions::PyValueError::new_err("An Ed448 private key is 56 bytes long")
})?;
Ok(Ed448PrivateKey { pkey })
}
#[pyo3::prelude::pyfunction]
fn from_public_bytes(data: &[u8]) -> pyo3::PyResult<Ed448PublicKey> {
let pkey = openssl::pkey::PKey::public_key_from_raw_bytes(data, openssl::pkey::Id::ED448)
.map_err(|_| {
pyo3::exceptions::PyValueError::new_err("An Ed448 public key is 57 bytes long")
})?;
Ok(Ed448PublicKey { pkey })
}
#[pyo3::prelude::pymethods]
impl Ed448PrivateKey {
fn sign<'p>(
&self,
py: pyo3::Python<'p>,
data: CffiBuf<'_>,
) -> CryptographyResult<&'p pyo3::types::PyBytes> {
let mut signer = openssl::sign::Signer::new_without_digest(&self.pkey)?;
Ok(pyo3::types::PyBytes::new_with(py, signer.len()?, |b| {
let n = signer
.sign_oneshot(b, data.as_bytes())
.map_err(CryptographyError::from)?;
assert_eq!(n, b.len());
Ok(())
})?)
}
fn public_key(&self) -> CryptographyResult<Ed448PublicKey> {
let raw_bytes = self.pkey.raw_public_key()?;
Ok(Ed448PublicKey {
pkey: openssl::pkey::PKey::public_key_from_raw_bytes(
&raw_bytes,
openssl::pkey::Id::ED448,
)?,
})
}
fn private_bytes_raw<'p>(
&self,
py: pyo3::Python<'p>,
) -> CryptographyResult<&'p pyo3::types::PyBytes> {
let raw_bytes = self.pkey.raw_private_key()?;
Ok(pyo3::types::PyBytes::new(py, &raw_bytes))
}
fn private_bytes<'p>(
slf: &pyo3::PyCell<Self>,
py: pyo3::Python<'p>,
encoding: &pyo3::PyAny,
format: &pyo3::PyAny,
encryption_algorithm: &pyo3::PyAny,
) -> CryptographyResult<&'p pyo3::types::PyBytes> {
utils::pkey_private_bytes(
py,
slf,
&slf.borrow().pkey,
encoding,
format,
encryption_algorithm,
true,
true,
)
}
}
#[pyo3::prelude::pymethods]
impl Ed448PublicKey {
fn verify(&self, signature: CffiBuf<'_>, data: CffiBuf<'_>) -> CryptographyResult<()> {
let valid = openssl::sign::Verifier::new_without_digest(&self.pkey)?
.verify_oneshot(signature.as_bytes(), data.as_bytes())?;
if !valid {
return Err(CryptographyError::from(
exceptions::InvalidSignature::new_err(()),
));
}
Ok(())
}
fn public_bytes_raw<'p>(
&self,
py: pyo3::Python<'p>,
) -> CryptographyResult<&'p pyo3::types::PyBytes> {
let raw_bytes = self.pkey.raw_public_key()?;
Ok(pyo3::types::PyBytes::new(py, &raw_bytes))
}
fn public_bytes<'p>(
slf: &pyo3::PyCell<Self>,
py: pyo3::Python<'p>,
encoding: &pyo3::PyAny,
format: &pyo3::PyAny,
) -> CryptographyResult<&'p pyo3::types::PyBytes> {
utils::pkey_public_bytes(py, slf, &slf.borrow().pkey, encoding, format, true, true)
}
fn __eq__(&self, other: pyo3::PyRef<'_, Self>) -> bool {
self.pkey.public_eq(&other.pkey)
}
fn __copy__(slf: pyo3::PyRef<'_, Self>) -> pyo3::PyRef<'_, Self> {
slf
}
}
pub(crate) fn create_module(py: pyo3::Python<'_>) -> pyo3::PyResult<&pyo3::prelude::PyModule> {
let m = pyo3::prelude::PyModule::new(py, "ed448")?;
m.add_function(pyo3::wrap_pyfunction!(generate_key, m)?)?;
m.add_function(pyo3::wrap_pyfunction!(from_private_bytes, m)?)?;
m.add_function(pyo3::wrap_pyfunction!(from_public_bytes, m)?)?;
m.add_class::<Ed448PrivateKey>()?;
m.add_class::<Ed448PublicKey>()?;
Ok(m)
}