poly-ring-xnp1 0.2.0

Polynomial ring Z[x]/(x^n+1) for lattice-based cryptography
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

/// A macro to create a vector of `ZqI32`. It transforms the following code:
///
/// ```ignore
/// zqi32_vec![1,2,3 ; Q]
/// ```
///
/// into
///
/// ```ignore
/// vec![ZqI32::<Q>::new(1), ZqI32::<Q>::new(2), ZqI32::<Q>::new(3)]
/// ```
///
/// Please note the semi-colon `;` is not for specifying the length of the vector (as vec! macro does),
/// but for specifying the value of the prime modulus Q.
#[macro_export]
macro_rules! zqi32_vec {
    ($($x:expr),* ; $Q:expr) => {{
        vec![ $($crate::zq::ZqI32::<$Q>::new($x)),* ]
    }};
}

/// A macro to create a vector of `ZqI64`. It transforms the following code:
///
/// ```ignore
/// zqi64_vec![1,2,3 ; Q]
/// ```
///
/// into
///
/// ```ignore
/// vec![ZqI64::<Q>::new(1), ZqI64::<Q>::new(2), ZqI64::<Q>::new(3)]
/// ```
///
/// Please note the semi-colon `;` is not for specifying the length of the vector (as vec! macro does),
/// but for specifying the value of the prime modulus Q.
#[macro_export]
macro_rules! zqi64_vec {
    ($($x:expr),* ; $Q:expr) => {{
        vec![ $($crate::zq::ZqI64::<$Q>::new($x)),* ]
    }};
}

/// A macro to create a vector of `ZqU32`. It transforms the following code:
///
/// ```ignore
/// zqu32_vec![1,2,3 ; Q]
/// ```
///
/// into
///
/// ```ignore
/// vec![ZqU32::<Q>::new(1), ZqU32::<Q>::new(2), ZqU32::<Q>::new(3)]
/// ```
///
/// Please note the semi-colon `;` is not for specifying the length of the vector (as vec! macro does),
/// but for specifying the value of the prime modulus Q.
#[macro_export]
macro_rules! zqu32_vec {
    ($($x:expr),* ; $Q:expr) => {{
        vec![ $($crate::zq::ZqU32::<$Q>::new($x)),* ]
    }};
}

/// A macro to create a vector of `ZqU64`. It transforms the following code:
///
/// ```ignore
/// zqu64_vec![1,2,3 ; Q]
/// ```
///
/// into
///
/// ```ignore
/// vec![ZqU64::<Q>::new(1), ZqU64::<Q>::new(2), ZqU64::<Q>::new(3)]
/// ```
///
/// Please note the semi-colon `;` is not for specifying the length of the vector (as vec! macro does),
/// but for specifying the value of the prime modulus Q.
#[macro_export]
macro_rules! zqu64_vec {
    ($($x:expr),* ; $Q:expr) => {{
        vec![ $($crate::zq::ZqU64::<$Q>::new($x)),* ]
    }};
}

#[cfg(test)]
mod tests {
    #[test]
    fn test_zqi32_vec() {
        let v = zqi32_vec![-9, -6, 0, 6; 7];
        let values = v.iter().map(|x| x.value).collect::<Vec<_>>();
        assert_eq!(values, vec![-2, 1, 0, -1]);
    }

    #[test]
    fn test_zqi64_vec() {
        let v = zqi64_vec![-9, -6, 0, 6; 7];
        let values = v.iter().map(|x| x.value).collect::<Vec<_>>();
        assert_eq!(values, vec![-2, 1, 0, -1]);
    }

    #[test]
    fn test_zqu32_vec() {
        let v = zqu32_vec![12, 8, 0, 6; 7];
        let values = v.iter().map(|x| x.value).collect::<Vec<_>>();
        assert_eq!(values, vec![5, 1, 0, 6]);
    }

    #[test]
    fn test_zqu64_vec() {
        let v = zqu64_vec![12, 8, 0, 6; 7];
        let values = v.iter().map(|x| x.value).collect::<Vec<_>>();
        assert_eq!(values, vec![5, 1, 0, 6]);
    }
}