crypto_api_blake2 0.2.0

Implements Blake2b for `crypto_api`
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
147
148
149
150
151
152
153
154
155
156
157
158
159

use crypto_api_blake2::{ Blake2Error, Blake2b };
include!("read_test_vectors.rs");


#[derive(Debug)]
pub struct TestVector {
	line: usize,
	key___: Vec<u8>,
	input0: Vec<u8>,
	input1: Vec<u8>,
	input2: Vec<u8>,
	mac___: Vec<u8>
}
impl TestVector {
	fn test(&self) {
		match self.mac___.len() {
			64 => self.test_constlen(),
			_ => self.test_varlen()
		}
	}
	fn test_constlen(&self) {
		// Create hasher and initialize it
		let mut mac = Blake2b::streaming_mac();
		mac.init(&self.key___).unwrap();
		
		// Absorb data
		mac.update(&self.input0).unwrap();
		mac.update(&self.input1).unwrap();
		mac.update(&self.input2).unwrap();
		
		// Compute hash
		let mut buf = vec![0; 64];
		mac.finish(&mut buf).unwrap();
		assert_eq!(buf, self.mac___, "@{} failed", self.line);
	}
	fn test_varlen(&self) {
		// Create hasher and initialize it
		let mut mac = Blake2b::streaming_varlen_mac();
		mac.varlen_init(self.mac___.len(), &self.key___).unwrap();
		
		// Absorb data
		mac.update(&self.input0).unwrap();
		mac.update(&self.input1).unwrap();
		mac.update(&self.input2).unwrap();
		
		// Compute hash
		let mut buf = vec![0; self.mac___.len()];
		mac.finish(&mut buf).unwrap();
		assert_eq!(buf, self.mac___, "@{} failed", self.line);
	}
}
#[test]
fn test() {
	// Read test vectors
	let vectors: Vec<TestVector> = read_test_vectors!(
		"blake2b_streaming_mac.txt"
			=> TestVector{ line, key___, input0, input1, input2, mac___ }
	);
	// Test all vectors
	for vector in vectors { vector.test() }
}


#[derive(Debug)]
struct ApiTestVector {
	line: usize,
	test_name_: &'static str,
	key_len___: usize,
	mac_len___: usize,
	buffer_len: usize,
	error_desc: &'static str
}
impl ApiTestVector {
	fn test(&self) {
		match self.test_name_ {
			"test_constlen_init" => self.test_constlen_init(),
			"test_varlen_init" => self.test_varlen_init(),
			"test_constlen_finish" => self.test_constlen_finish(),
			"test_varlen_finish" => self.test_varlen_finish(),
			_ => panic!("Invalid test name @{}", self.line)
		}
	}
	fn test_constlen_init(&self) {
		// Create MAC and key
		let mut mac = Blake2b::streaming_mac();
		let key = vec![0; self.key_len___];
		
		// Test init
		let err = mac.init(&key).unwrap_err();
		match err.downcast_ref::<Blake2Error>() {
			Some(Blake2Error::ApiMisuse(desc)) => assert_eq!(
				*desc, self.error_desc,
				"Invalid API-error description @{}", self.line
			),
			_ => panic!("Invalid error returned @{}", self.line)
		}
	}
	fn test_varlen_init(&self) {
		// Create MAC and key
		let mut mac = Blake2b::streaming_varlen_mac();
		let key = vec![0; self.key_len___];
		
		// Test init
		let err = mac.varlen_init(self.mac_len___, &key).unwrap_err();
		match err.downcast_ref::<Blake2Error>() {
			Some(Blake2Error::ApiMisuse(desc)) => assert_eq!(
				*desc, self.error_desc,
				"Invalid API-error description @{}", self.line
			),
			_ => panic!("Invalid error returned @{}", self.line)
		}
	}
	fn test_constlen_finish(&self) {
		// Create MAC and key
		let mut mac = Blake2b::streaming_mac();
		
		// Initialize MAC and create parameters
		mac.init(&vec![0; self.key_len___]).unwrap();
		let mut buf = vec![0; self.buffer_len];
		
		// Test finish
		let err = mac.finish(&mut buf).unwrap_err();
		match err.downcast_ref::<Blake2Error>() {
			Some(Blake2Error::ApiMisuse(desc)) => assert_eq!(
				*desc, self.error_desc,
				"Invalid API-error description @{}", self.line
			),
			_ => panic!("Invalid error returned @{}", self.line)
		}
	}
	fn test_varlen_finish(&self) {
		// Create MAC and key
		let mut mac = Blake2b::streaming_varlen_mac();
		
		// Initialize MAC and create parameters
		mac.varlen_init(self.mac_len___, &vec![0; self.key_len___]).unwrap();
		let mut buf = vec![0; self.buffer_len];
		
		// Test finish
		let err = mac.finish(&mut buf).unwrap_err();
		match err.downcast_ref::<Blake2Error>() {
			Some(Blake2Error::ApiMisuse(desc)) => assert_eq!(
				*desc, self.error_desc,
				"Invalid API-error description @{}", self.line
			),
			_ => panic!("Invalid error returned @{}", self.line)
		}
	}
}
#[test]
fn test_api() {
	// Read test vectors
	let vectors: Vec<ApiTestVector> = read_test_vectors!(
		"blake2b_streaming_mac_api.txt"
			=> ApiTestVector{ line, test_name_, key_len___, mac_len___, buffer_len, error_desc }
	);
	// Test all vectors
	for vector in vectors { vector.test() }
}