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//! Elliptic Curve Diffie-Hellman.
use crate::{Error, Result};
use crate::crypto::SessionKey;
use crate::crypto::mpi::{MPI, Ciphertext, SecretKeyMaterial};
use crate::packet::{key, Key};
/// Wraps a session key using Elliptic Curve Diffie-Hellman.
#[allow(dead_code)]
pub fn encrypt<R>(recipient: &Key<key::PublicParts, R>,
session_key: &SessionKey)
-> Result<Ciphertext>
where R: key::KeyRole
{
Ok(Ciphertext::ECDH {
e: MPI::new(&session_key),
key: Vec::from(&session_key[..]).into_boxed_slice(),
})
}
/// Unwraps a session key using Elliptic Curve Diffie-Hellman.
#[allow(dead_code)]
pub fn decrypt<R>(recipient: &Key<key::PublicParts, R>,
recipient_sec: &SecretKeyMaterial,
ciphertext: &Ciphertext)
-> Result<SessionKey>
where R: key::KeyRole
{
match ciphertext {
Ciphertext::ECDH { key, .. } => Ok(Vec::from(&key[..]).into()),
_ => Err(Error::InvalidArgument("not a ecdh ciphertext".into()).into()),
}
}
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