phc 0.6.1

Pure Rust implementation of the Password Hashing Competition (PHC) string format which is used for storing password hashes
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
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146

//! Tests for `PasswordHash` encoding/decoding.
//!
//! Each test implements a different permutation of the possible combinations
//! of the string encoding, and ensures password hashes round trip under each
//! of the conditions.

use phc::{Ident, ParamsString, PasswordHash, Salt};

const EXAMPLE_ALGORITHM: Ident = Ident::new_unwrap("argon2d");
const EXAMPLE_SALT: &str = "saltsaltsaltsaltsalt";
const EXAMPLE_HASH: &[u8] = &[
    0x85, 0xab, 0x21, 0x85, 0xab, 0x21, 0x85, 0xab, 0x21, 0x85, 0xab, 0x21, 0x85, 0xab, 0x21, 0x85,
    0xab, 0x21, 0x85, 0xab, 0x21, 0x85, 0xab, 0x21, 0x85, 0xab, 0x21, 0x85, 0xab, 0x21, 0x85, 0xab,
];

/// Example parameters
fn example_params() -> ParamsString {
    let mut params = ParamsString::new();
    params.add_decimal("a", 1).unwrap();
    params.add_decimal("b", 2).unwrap();
    params.add_decimal("c", 3).unwrap();
    params
}

#[test]
fn algorithm_alone() {
    let ph = PasswordHash::new("$argon2d").unwrap();
    assert_eq!(ph.algorithm, EXAMPLE_ALGORITHM);

    let s = ph.to_string();
    assert_eq!(s, "$argon2d");

    let ph2 = PasswordHash::try_from(s.as_str()).unwrap();
    assert_eq!(ph, ph2);
}

#[test]
fn params() {
    let ph = PasswordHash {
        algorithm: EXAMPLE_ALGORITHM,
        version: None,
        params: example_params(),
        salt: None,
        hash: None,
    };

    let s = ph.to_string();
    assert_eq!(s, "$argon2d$a=1,b=2,c=3");

    let ph2 = PasswordHash::try_from(s.as_str()).unwrap();
    assert_eq!(ph, ph2);
}

#[test]
fn salt() {
    let ph = PasswordHash {
        algorithm: EXAMPLE_ALGORITHM,
        version: None,
        params: ParamsString::new(),
        salt: Some(Salt::from_b64(EXAMPLE_SALT).unwrap()),
        hash: None,
    };

    let s = ph.to_string();
    assert_eq!(s, "$argon2d$saltsaltsaltsaltsalt");

    let ph2 = PasswordHash::try_from(s.as_str()).unwrap();
    assert_eq!(ph, ph2);
}

#[test]
fn one_param_and_salt() {
    let mut params = ParamsString::new();
    params.add_decimal("a", 1).unwrap();

    let ph = PasswordHash {
        algorithm: EXAMPLE_ALGORITHM,
        version: None,
        params,
        salt: Some(Salt::from_b64(EXAMPLE_SALT).unwrap()),
        hash: None,
    };

    let s = ph.to_string();
    assert_eq!(s, "$argon2d$a=1$saltsaltsaltsaltsalt");

    let ph2 = PasswordHash::try_from(s.as_str()).unwrap();
    assert_eq!(ph, ph2);
}

#[test]
fn params_and_salt() {
    let ph = PasswordHash {
        algorithm: EXAMPLE_ALGORITHM,
        version: None,
        params: example_params(),
        salt: Some(Salt::from_b64(EXAMPLE_SALT).unwrap()),
        hash: None,
    };

    let s = ph.to_string();
    assert_eq!(s, "$argon2d$a=1,b=2,c=3$saltsaltsaltsaltsalt");

    let ph2 = PasswordHash::try_from(s.as_str()).unwrap();
    assert_eq!(ph, ph2);
}

#[test]
fn salt_and_hash() {
    let ph = PasswordHash {
        algorithm: EXAMPLE_ALGORITHM,
        version: None,
        params: ParamsString::default(),
        salt: Some(Salt::from_b64(EXAMPLE_SALT).unwrap()),
        hash: Some(EXAMPLE_HASH.try_into().unwrap()),
    };

    let s = ph.to_string();
    assert_eq!(
        s,
        "$argon2d$saltsaltsaltsaltsalt$hashhashhashhashhashhashhashhashhashhashhas"
    );

    let ph2 = PasswordHash::try_from(s.as_str()).unwrap();
    assert_eq!(ph, ph2);
}

#[test]
fn all_fields() {
    let ph = PasswordHash {
        algorithm: EXAMPLE_ALGORITHM,
        version: None,
        params: example_params(),
        salt: Some(Salt::from_b64(EXAMPLE_SALT).unwrap()),
        hash: Some(EXAMPLE_HASH.try_into().unwrap()),
    };

    let s = ph.to_string();
    assert_eq!(
        s,
        "$argon2d$a=1,b=2,c=3$saltsaltsaltsaltsalt$hashhashhashhashhashhashhashhashhashhashhas"
    );

    let ph2 = PasswordHash::try_from(s.as_str()).unwrap();
    assert_eq!(ph, ph2);
}