miden-crypto/src/hash/rpo/tests.rs
src/hash/rpo/tests.rsRaw
1use super::{
2 Felt, FieldElement, Hasher, Rpo256, RpoDigest, StarkField, ALPHA, INV_ALPHA, ONE, STATE_WIDTH,
3 ZERO,
4};
5use core::convert::TryInto;
6use rand_utils::rand_value;
7
8#[test]
9fn test_alphas() {
10 let e: Felt = Felt::new(rand_value());
11 let e_exp = e.exp(ALPHA);
12 assert_eq!(e, e_exp.exp(INV_ALPHA));
13}
14
15#[test]
16fn test_sbox() {
17 let state = [Felt::new(rand_value()); STATE_WIDTH];
18
19 let mut expected = state;
20 expected.iter_mut().for_each(|v| *v = v.exp(ALPHA));
21
22 let mut actual = state;
23 Rpo256::apply_sbox(&mut actual);
24
25 assert_eq!(expected, actual);
26}
27
28#[test]
29fn test_inv_sbox() {
30 let state = [Felt::new(rand_value()); STATE_WIDTH];
31
32 let mut expected = state;
33 expected.iter_mut().for_each(|v| *v = v.exp(INV_ALPHA));
34
35 let mut actual = state;
36 Rpo256::apply_inv_sbox(&mut actual);
37
38 assert_eq!(expected, actual);
39}
40
41#[test]
42fn hash_elements_vs_merge() {
43 let elements = [Felt::new(rand_value()); 8];
44
45 let digests: [RpoDigest; 2] = [
46 RpoDigest::new(elements[..4].try_into().unwrap()),
47 RpoDigest::new(elements[4..].try_into().unwrap()),
48 ];
49
50 let m_result = Rpo256::merge(&digests);
51 let h_result = Rpo256::hash_elements(&elements);
52 assert_eq!(m_result, h_result);
53}
54
55#[test]
56fn merge_vs_merge_in_domain() {
57 let elements = [Felt::new(rand_value()); 8];
58
59 let digests: [RpoDigest; 2] = [
60 RpoDigest::new(elements[..4].try_into().unwrap()),
61 RpoDigest::new(elements[4..].try_into().unwrap()),
62 ];
63 let merge_result = Rpo256::merge(&digests);
64
65 // ------------- merge with domain = 0 ----------------------------------------------------------
66
67 // set domain to ZERO. This should not change the result.
68 let domain = ZERO;
69
70 let merge_in_domain_result = Rpo256::merge_in_domain(&digests, domain);
71 assert_eq!(merge_result, merge_in_domain_result);
72
73 // ------------- merge with domain = 1 ----------------------------------------------------------
74
75 // set domain to ONE. This should change the result.
76 let domain = ONE;
77
78 let merge_in_domain_result = Rpo256::merge_in_domain(&digests, domain);
79 assert_ne!(merge_result, merge_in_domain_result);
80}
81
82#[test]
83fn hash_elements_vs_merge_with_int() {
84 let tmp = [Felt::new(rand_value()); 4];
85 let seed = RpoDigest::new(tmp);
86
87 // ----- value fits into a field element ------------------------------------------------------
88 let val: Felt = Felt::new(rand_value());
89 let m_result = Rpo256::merge_with_int(seed, val.as_int());
90
91 let mut elements = seed.as_elements().to_vec();
92 elements.push(val);
93 let h_result = Rpo256::hash_elements(&elements);
94
95 assert_eq!(m_result, h_result);
96
97 // ----- value does not fit into a field element ----------------------------------------------
98 let val = Felt::MODULUS + 2;
99 let m_result = Rpo256::merge_with_int(seed, val);
100
101 let mut elements = seed.as_elements().to_vec();
102 elements.push(Felt::new(val));
103 elements.push(Felt::new(1));
104 let h_result = Rpo256::hash_elements(&elements);
105
106 assert_eq!(m_result, h_result);
107}
108
109#[test]
110fn hash_padding() {
111 // adding a zero bytes at the end of a byte string should result in a different hash
112 let r1 = Rpo256::hash(&[1_u8, 2, 3]);
113 let r2 = Rpo256::hash(&[1_u8, 2, 3, 0]);
114 assert_ne!(r1, r2);
115
116 // same as above but with bigger inputs
117 let r1 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6]);
118 let r2 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6, 0]);
119 assert_ne!(r1, r2);
120
121 // same as above but with input splitting over two elements
122 let r1 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6, 7]);
123 let r2 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6, 7, 0]);
124 assert_ne!(r1, r2);
125
126 // same as above but with multiple zeros
127 let r1 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6, 7, 0, 0]);
128 let r2 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6, 7, 0, 0, 0, 0]);
129 assert_ne!(r1, r2);
130}
131
132#[test]
133fn hash_elements_padding() {
134 let e1 = [Felt::new(rand_value()); 2];
135 let e2 = [e1[0], e1[1], ZERO];
136
137 let r1 = Rpo256::hash_elements(&e1);
138 let r2 = Rpo256::hash_elements(&e2);
139 assert_ne!(r1, r2);
140}
141
142#[test]
143fn hash_elements() {
144 let elements = [
145 Felt::new(0),
146 Felt::new(1),
147 Felt::new(2),
148 Felt::new(3),
149 Felt::new(4),
150 Felt::new(5),
151 Felt::new(6),
152 Felt::new(7),
153 ];
154
155 let digests: [RpoDigest; 2] = [
156 RpoDigest::new(elements[..4].try_into().unwrap()),
157 RpoDigest::new(elements[4..8].try_into().unwrap()),
158 ];
159
160 let m_result = Rpo256::merge(&digests);
161 let h_result = Rpo256::hash_elements(&elements);
162 assert_eq!(m_result, h_result);
163}
164
165#[test]
166fn hash_test_vectors() {
167 let elements = [
168 Felt::new(0),
169 Felt::new(1),
170 Felt::new(2),
171 Felt::new(3),
172 Felt::new(4),
173 Felt::new(5),
174 Felt::new(6),
175 Felt::new(7),
176 Felt::new(8),
177 Felt::new(9),
178 Felt::new(10),
179 Felt::new(11),
180 Felt::new(12),
181 Felt::new(13),
182 Felt::new(14),
183 Felt::new(15),
184 Felt::new(16),
185 Felt::new(17),
186 Felt::new(18),
187 ];
188
189 for i in 0..elements.len() {
190 let expected = RpoDigest::new(EXPECTED[i]);
191 let result = Rpo256::hash_elements(&elements[..(i + 1)]);
192 assert_eq!(result, expected);
193 }
194}
195
196const EXPECTED: [[Felt; 4]; 19] = [
197 [
198 Felt::new(1502364727743950833),
199 Felt::new(5880949717274681448),
200 Felt::new(162790463902224431),
201 Felt::new(6901340476773664264),
202 ],
203 [
204 Felt::new(7478710183745780580),
205 Felt::new(3308077307559720969),
206 Felt::new(3383561985796182409),
207 Felt::new(17205078494700259815),
208 ],
209 [
210 Felt::new(17439912364295172999),
211 Felt::new(17979156346142712171),
212 Felt::new(8280795511427637894),
213 Felt::new(9349844417834368814),
214 ],
215 [
216 Felt::new(5105868198472766874),
217 Felt::new(13090564195691924742),
218 Felt::new(1058904296915798891),
219 Felt::new(18379501748825152268),
220 ],
221 [
222 Felt::new(9133662113608941286),
223 Felt::new(12096627591905525991),
224 Felt::new(14963426595993304047),
225 Felt::new(13290205840019973377),
226 ],
227 [
228 Felt::new(3134262397541159485),
229 Felt::new(10106105871979362399),
230 Felt::new(138768814855329459),
231 Felt::new(15044809212457404677),
232 ],
233 [
234 Felt::new(162696376578462826),
235 Felt::new(4991300494838863586),
236 Felt::new(660346084748120605),
237 Felt::new(13179389528641752698),
238 ],
239 [
240 Felt::new(2242391899857912644),
241 Felt::new(12689382052053305418),
242 Felt::new(235236990017815546),
243 Felt::new(5046143039268215739),
244 ],
245 [
246 Felt::new(9585630502158073976),
247 Felt::new(1310051013427303477),
248 Felt::new(7491921222636097758),
249 Felt::new(9417501558995216762),
250 ],
251 [
252 Felt::new(1994394001720334744),
253 Felt::new(10866209900885216467),
254 Felt::new(13836092831163031683),
255 Felt::new(10814636682252756697),
256 ],
257 [
258 Felt::new(17486854790732826405),
259 Felt::new(17376549265955727562),
260 Felt::new(2371059831956435003),
261 Felt::new(17585704935858006533),
262 ],
263 [
264 Felt::new(11368277489137713825),
265 Felt::new(3906270146963049287),
266 Felt::new(10236262408213059745),
267 Felt::new(78552867005814007),
268 ],
269 [
270 Felt::new(17899847381280262181),
271 Felt::new(14717912805498651446),
272 Felt::new(10769146203951775298),
273 Felt::new(2774289833490417856),
274 ],
275 [
276 Felt::new(3794717687462954368),
277 Felt::new(4386865643074822822),
278 Felt::new(8854162840275334305),
279 Felt::new(7129983987107225269),
280 ],
281 [
282 Felt::new(7244773535611633983),
283 Felt::new(19359923075859320),
284 Felt::new(10898655967774994333),
285 Felt::new(9319339563065736480),
286 ],
287 [
288 Felt::new(4935426252518736883),
289 Felt::new(12584230452580950419),
290 Felt::new(8762518969632303998),
291 Felt::new(18159875708229758073),
292 ],
293 [
294 Felt::new(14871230873837295931),
295 Felt::new(11225255908868362971),
296 Felt::new(18100987641405432308),
297 Felt::new(1559244340089644233),
298 ],
299 [
300 Felt::new(8348203744950016968),
301 Felt::new(4041411241960726733),
302 Felt::new(17584743399305468057),
303 Felt::new(16836952610803537051),
304 ],
305 [
306 Felt::new(16139797453633030050),
307 Felt::new(1090233424040889412),
308 Felt::new(10770255347785669036),
309 Felt::new(16982398877290254028),
310 ],
311];