yubihsm 0.20.0

Pure Rust client for YubiHSM2 devices with support for HTTP and USB-based access to the device. Supports most HSM functionality including ECDSA, Ed25519, HMAC, and RSA.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

use super::{Algorithm, AlgorithmError, AlgorithmErrorKind::TagInvalid};

/// Valid algorithms for auth keys
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
#[allow(non_camel_case_types)]
#[repr(u8)]
pub enum AuthenticationAlg {
    /// YubiHSM AES PSK authentication
    YUBICO_AES = 0x26,
}

impl AuthenticationAlg {
    /// Convert an unsigned byte tag into an `AuthAlgorithm` (if valid)
    pub fn from_u8(tag: u8) -> Result<Self, AlgorithmError> {
        Ok(match tag {
            0x26 => AuthenticationAlg::YUBICO_AES,
            _ => fail!(TagInvalid, "unknown auth algorithm ID: 0x{:02x}", tag),
        })
    }

    /// Serialize algorithm ID as a byte
    pub fn to_u8(self) -> u8 {
        self as u8
    }

    /// Return the size of the given key (as expected by the `YubiHSM2`) in bytes
    pub fn key_len(self) -> usize {
        match self {
            AuthenticationAlg::YUBICO_AES => 32,
        }
    }
}

impl From<AuthenticationAlg> for Algorithm {
    fn from(alg: AuthenticationAlg) -> Algorithm {
        Algorithm::Auth(alg)
    }
}

impl_algorithm_serializers!(AuthenticationAlg);