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//! Security Key (FIDO/U2F) private keys as described in [PROTOCOL.u2f].
//!
//! [PROTOCOL.u2f]: https://cvsweb.openbsd.org/src/usr.bin/ssh/PROTOCOL.u2f?annotate=HEAD
use crate::{public, Error, Result};
use alloc::vec::Vec;
use encoding::{CheckedSum, Decode, Encode, Reader, Writer};
/// Security Key (FIDO/U2F) ECDSA/NIST P-256 private key as specified in
/// [PROTOCOL.u2f](https://cvsweb.openbsd.org/src/usr.bin/ssh/PROTOCOL.u2f?annotate=HEAD).
#[cfg(all(feature = "alloc", feature = "ecdsa"))]
#[derive(Clone, Debug, Eq, PartialEq)]
pub struct SkEcdsaSha2NistP256 {
/// Public key.
public: public::SkEcdsaSha2NistP256,
/// Flags.
flags: u8,
/// FIDO/U2F key handle.
key_handle: Vec<u8>,
/// Reserved data.
reserved: Vec<u8>,
}
#[cfg(feature = "ecdsa")]
impl SkEcdsaSha2NistP256 {
/// Construct new instance of SkEcdsaSha2NistP256.
#[cfg(feature = "alloc")]
pub fn new(
public: public::SkEcdsaSha2NistP256,
flags: u8,
key_handle: impl Into<Vec<u8>>,
) -> Result<Self> {
let key_handle = key_handle.into();
if key_handle.len() <= 255 {
Ok(SkEcdsaSha2NistP256 {
public,
flags,
key_handle,
reserved: Vec::<u8>::new(),
})
} else {
Err(encoding::Error::Length.into())
}
}
/// Get the ECDSA/NIST P-256 public key.
pub fn public(&self) -> &public::SkEcdsaSha2NistP256 {
&self.public
}
/// Get flags.
pub fn flags(&self) -> u8 {
self.flags
}
/// Get FIDO/U2F key handle.
pub fn key_handle(&self) -> &[u8] {
&self.key_handle
}
}
#[cfg(feature = "ecdsa")]
impl Decode for SkEcdsaSha2NistP256 {
type Error = Error;
fn decode(reader: &mut impl Reader) -> Result<Self> {
Ok(Self {
public: public::SkEcdsaSha2NistP256::decode(reader)?,
flags: u8::decode(reader)?,
key_handle: Vec::decode(reader)?,
reserved: Vec::decode(reader)?,
})
}
}
#[cfg(feature = "ecdsa")]
impl Encode for SkEcdsaSha2NistP256 {
fn encoded_len(&self) -> encoding::Result<usize> {
[
self.public.encoded_len()?,
self.flags.encoded_len()?,
self.key_handle.encoded_len()?,
self.reserved.encoded_len()?,
]
.checked_sum()
}
fn encode(&self, writer: &mut impl Writer) -> encoding::Result<()> {
self.public.encode(writer)?;
self.flags.encode(writer)?;
self.key_handle.encode(writer)?;
self.reserved.encode(writer)?;
Ok(())
}
}
/// Security Key (FIDO/U2F) Ed25519 private key as specified in
/// [PROTOCOL.u2f](https://cvsweb.openbsd.org/src/usr.bin/ssh/PROTOCOL.u2f?annotate=HEAD).
#[cfg(feature = "alloc")]
#[derive(Clone, Debug, Eq, PartialEq, PartialOrd, Ord)]
pub struct SkEd25519 {
/// Public key.
public: public::SkEd25519,
/// Flags.
flags: u8,
/// FIDO/U2F key handle.
key_handle: Vec<u8>,
/// Reserved data.
reserved: Vec<u8>,
}
impl SkEd25519 {
/// Construct new instance of SkEd25519.
#[cfg(feature = "alloc")]
pub fn new(
public: public::SkEd25519,
flags: u8,
key_handle: impl Into<Vec<u8>>,
) -> Result<Self> {
let key_handle = key_handle.into();
if key_handle.len() <= 255 {
Ok(SkEd25519 {
public,
flags,
key_handle,
reserved: Vec::<u8>::new(),
})
} else {
Err(encoding::Error::Length.into())
}
}
/// Get the Ed25519 public key.
pub fn public(&self) -> &public::SkEd25519 {
&self.public
}
/// Get flags.
pub fn flags(&self) -> u8 {
self.flags
}
/// Get FIDO/U2F key handle.
pub fn key_handle(&self) -> &[u8] {
&self.key_handle
}
}
impl Decode for SkEd25519 {
type Error = Error;
fn decode(reader: &mut impl Reader) -> Result<Self> {
Ok(Self {
public: public::SkEd25519::decode(reader)?,
flags: u8::decode(reader)?,
key_handle: Vec::decode(reader)?,
reserved: Vec::decode(reader)?,
})
}
}
impl Encode for SkEd25519 {
fn encoded_len(&self) -> encoding::Result<usize> {
[
self.public.encoded_len()?,
self.flags.encoded_len()?,
self.key_handle.encoded_len()?,
self.reserved.encoded_len()?,
]
.checked_sum()
}
fn encode(&self, writer: &mut impl Writer) -> encoding::Result<()> {
self.public.encode(writer)?;
self.flags.encode(writer)?;
self.key_handle.encode(writer)?;
self.reserved.encode(writer)?;
Ok(())
}
}
|
