navajo 0.0.4

cryptographic APIs
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
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92

use core::str::FromStr;

use alloc::{format, string::String};
use serde::{Deserialize, Serialize};

#[derive(
    Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize, strum::Display, strum::EnumIter,
)]

pub enum Kind {
    #[serde(rename = "AEAD")]
    Aead,
    #[serde(rename = "DAEAD")]
    Daead,
    // #[serde(rename="HPKE")] // TODO: Enable this once HPKE is implemented
    // Hpke,
    #[serde(rename = "MAC")]
    Mac,
    #[serde(rename = "DSA")]
    Dsa,
}

impl Kind {
    pub fn as_str(&self) -> &'static str {
        match self {
            Kind::Aead => "AEAD",
            Kind::Daead => "DAEAD",
            // PrimitiveType::Hpke => "HPKE",
            Kind::Mac => "MAC",
            Kind::Dsa => "Signature",
        }
    }
    pub fn as_u8(&self) -> u8 {
        match self {
            Kind::Aead => 0,
            Kind::Daead => 1,
            // PrimitiveType::Hpke => 2,
            Kind::Mac => 3,
            Kind::Dsa => 4,
        }
    }

    /// Returns `true` if the primitive Kind is `Dsa` (i.e. a signature algorithm)
    pub fn is_dsa(&self) -> bool {
        matches!(self, Kind::Dsa)
    }
    /// Returns `true` if the primitive is `Aead `
    pub fn is_aead(&self) -> bool {
        matches!(self, Kind::Aead)
    }
    /// Returns `true` if the primitive is `Daead`
    pub fn is_daead(&self) -> bool {
        matches!(self, Kind::Daead)
    }
    /// Returns `true` if the primitive is `Mac`
    pub fn is_mac(&self) -> bool {
        matches!(self, Kind::Mac)
    }
}

impl FromStr for Kind {
    type Err = String;
    fn from_str(s: &str) -> Result<Self, Self::Err> {
        match s.to_uppercase().as_str() {
            "AEAD" => Ok(Kind::Aead),
            "DAEAD" => Ok(Kind::Daead),
            // "HPKE" => Ok(PrimitiveType::Hpke),
            "MAC" => Ok(Kind::Mac),
            "SIGNATURE" => Ok(Kind::Dsa),
            _ => Err(format!("invalid primitive type: \"{s}\"")),
        }
    }
}

impl From<Kind> for u8 {
    fn from(pt: Kind) -> Self {
        pt.as_u8()
    }
}
impl TryFrom<u8> for Kind {
    type Error = String;
    fn try_from(value: u8) -> Result<Self, Self::Error> {
        match value {
            0 => Ok(Kind::Aead),
            1 => Ok(Kind::Daead),
            // 2 => Ok(PrimitiveType::Hpke),
            3 => Ok(Kind::Mac),
            4 => Ok(Kind::Dsa),
            _ => Err(format!("invalid primitive type: \"{value}\"")),
        }
    }
}