miden-crypto/src/hash/rpo/tests.rs
src/hash/rpo/tests.rsRaw
1use super::{
2 ElementHasher, Felt, FieldElement, HashFn, Rpo256, RpoDigest256, StarkField, ALPHA, INV_ALPHA,
3 INV_MDS, MDS, STATE_WIDTH, ZERO,
4};
5use core::convert::TryInto;
6use rand_utils::rand_value;
7
8#[test]
9#[allow(clippy::needless_range_loop)]
10fn mds_inv_test() {
11 let mut mul_result = [[Felt::new(0); STATE_WIDTH]; STATE_WIDTH];
12 for i in 0..STATE_WIDTH {
13 for j in 0..STATE_WIDTH {
14 let result = {
15 let mut result = Felt::new(0);
16 for k in 0..STATE_WIDTH {
17 result += MDS[i][k] * INV_MDS[k][j]
18 }
19 result
20 };
21 mul_result[i][j] = result;
22 if i == j {
23 assert_eq!(result, Felt::new(1));
24 } else {
25 assert_eq!(result, Felt::new(0));
26 }
27 }
28 }
29}
30#[test]
31fn test_alphas() {
32 let e: Felt = Felt::new(rand_value());
33 let e_exp = e.exp(ALPHA);
34 assert_eq!(e, e_exp.exp(INV_ALPHA));
35}
36
37#[test]
38fn test_sbox() {
39 let state = [Felt::new(rand_value()); STATE_WIDTH];
40
41 let mut expected = state;
42 expected.iter_mut().for_each(|v| *v = v.exp(ALPHA));
43
44 let mut actual = state;
45 Rpo256::apply_sbox(&mut actual);
46
47 assert_eq!(expected, actual);
48}
49
50#[test]
51fn test_inv_sbox() {
52 let state = [Felt::new(rand_value()); STATE_WIDTH];
53
54 let mut expected = state;
55 expected.iter_mut().for_each(|v| *v = v.exp(INV_ALPHA));
56
57 let mut actual = state;
58 Rpo256::apply_inv_sbox(&mut actual);
59
60 assert_eq!(expected, actual);
61}
62
63#[test]
64fn hash_elements_vs_merge() {
65 let elements = [Felt::new(rand_value()); 8];
66
67 let digests: [RpoDigest256; 2] = [
68 RpoDigest256::new(elements[..4].try_into().unwrap()),
69 RpoDigest256::new(elements[4..].try_into().unwrap()),
70 ];
71
72 let m_result = Rpo256::merge(&digests);
73 let h_result = Rpo256::hash_elements(&elements);
74 assert_eq!(m_result, h_result);
75}
76
77#[test]
78fn hash_elements_vs_merge_with_int() {
79 let tmp = [Felt::new(rand_value()); 4];
80 let seed = RpoDigest256::new(tmp);
81
82 // ----- value fits into a field element ------------------------------------------------------
83 let val: Felt = Felt::new(rand_value());
84 let m_result = Rpo256::merge_with_int(seed, val.as_int());
85
86 let mut elements = seed.as_elements().to_vec();
87 elements.push(val);
88 let h_result = Rpo256::hash_elements(&elements);
89
90 assert_eq!(m_result, h_result);
91
92 // ----- value does not fit into a field element ----------------------------------------------
93 let val = Felt::MODULUS + 2;
94 let m_result = Rpo256::merge_with_int(seed, val);
95
96 let mut elements = seed.as_elements().to_vec();
97 elements.push(Felt::new(val));
98 elements.push(Felt::new(1));
99 let h_result = Rpo256::hash_elements(&elements);
100
101 assert_eq!(m_result, h_result);
102}
103
104#[test]
105fn hash_padding() {
106 // adding a zero bytes at the end of a byte string should result in a different hash
107 let r1 = Rpo256::hash(&[1_u8, 2, 3]);
108 let r2 = Rpo256::hash(&[1_u8, 2, 3, 0]);
109 assert_ne!(r1, r2);
110
111 // same as above but with bigger inputs
112 let r1 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6]);
113 let r2 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6, 0]);
114 assert_ne!(r1, r2);
115
116 // same as above but with input splitting over two elements
117 let r1 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6, 7]);
118 let r2 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6, 7, 0]);
119 assert_ne!(r1, r2);
120
121 // same as above but with multiple zeros
122 let r1 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6, 7, 0, 0]);
123 let r2 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6, 7, 0, 0, 0, 0]);
124 assert_ne!(r1, r2);
125}
126
127#[test]
128fn hash_elements_padding() {
129 let e1 = [Felt::new(rand_value()); 2];
130 let e2 = [e1[0], e1[1], ZERO];
131
132 let r1 = Rpo256::hash_elements(&e1);
133 let r2 = Rpo256::hash_elements(&e2);
134 assert_ne!(r1, r2);
135}
136
137#[test]
138fn hash_elements() {
139 let elements = [
140 Felt::new(0),
141 Felt::new(1),
142 Felt::new(2),
143 Felt::new(3),
144 Felt::new(4),
145 Felt::new(5),
146 Felt::new(6),
147 Felt::new(7),
148 ];
149
150 let digests: [RpoDigest256; 2] = [
151 RpoDigest256::new(elements[..4].try_into().unwrap()),
152 RpoDigest256::new(elements[4..8].try_into().unwrap()),
153 ];
154
155 let m_result = Rpo256::merge(&digests);
156 let h_result = Rpo256::hash_elements(&elements);
157 assert_eq!(m_result, h_result);
158}
159
160#[test]
161fn hash_test_vectors() {
162 let elements = [
163 Felt::new(0),
164 Felt::new(1),
165 Felt::new(2),
166 Felt::new(3),
167 Felt::new(4),
168 Felt::new(5),
169 Felt::new(6),
170 Felt::new(7),
171 Felt::new(8),
172 Felt::new(9),
173 Felt::new(10),
174 Felt::new(11),
175 Felt::new(12),
176 Felt::new(13),
177 Felt::new(14),
178 Felt::new(15),
179 Felt::new(16),
180 Felt::new(17),
181 Felt::new(18),
182 ];
183
184 for i in 0..elements.len() {
185 let expected = RpoDigest256::new(EXPECTED[i]);
186 let result = Rpo256::hash_elements(&elements[..(i + 1)]);
187 assert_eq!(result, expected);
188 }
189}
190
191const EXPECTED: [[Felt; 4]; 19] = [
192 [
193 Felt::new(1502364727743950833),
194 Felt::new(5880949717274681448),
195 Felt::new(162790463902224431),
196 Felt::new(6901340476773664264),
197 ],
198 [
199 Felt::new(7478710183745780580),
200 Felt::new(3308077307559720969),
201 Felt::new(3383561985796182409),
202 Felt::new(17205078494700259815),
203 ],
204 [
205 Felt::new(17439912364295172999),
206 Felt::new(17979156346142712171),
207 Felt::new(8280795511427637894),
208 Felt::new(9349844417834368814),
209 ],
210 [
211 Felt::new(5105868198472766874),
212 Felt::new(13090564195691924742),
213 Felt::new(1058904296915798891),
214 Felt::new(18379501748825152268),
215 ],
216 [
217 Felt::new(9133662113608941286),
218 Felt::new(12096627591905525991),
219 Felt::new(14963426595993304047),
220 Felt::new(13290205840019973377),
221 ],
222 [
223 Felt::new(3134262397541159485),
224 Felt::new(10106105871979362399),
225 Felt::new(138768814855329459),
226 Felt::new(15044809212457404677),
227 ],
228 [
229 Felt::new(162696376578462826),
230 Felt::new(4991300494838863586),
231 Felt::new(660346084748120605),
232 Felt::new(13179389528641752698),
233 ],
234 [
235 Felt::new(2242391899857912644),
236 Felt::new(12689382052053305418),
237 Felt::new(235236990017815546),
238 Felt::new(5046143039268215739),
239 ],
240 [
241 Felt::new(9585630502158073976),
242 Felt::new(1310051013427303477),
243 Felt::new(7491921222636097758),
244 Felt::new(9417501558995216762),
245 ],
246 [
247 Felt::new(1994394001720334744),
248 Felt::new(10866209900885216467),
249 Felt::new(13836092831163031683),
250 Felt::new(10814636682252756697),
251 ],
252 [
253 Felt::new(17486854790732826405),
254 Felt::new(17376549265955727562),
255 Felt::new(2371059831956435003),
256 Felt::new(17585704935858006533),
257 ],
258 [
259 Felt::new(11368277489137713825),
260 Felt::new(3906270146963049287),
261 Felt::new(10236262408213059745),
262 Felt::new(78552867005814007),
263 ],
264 [
265 Felt::new(17899847381280262181),
266 Felt::new(14717912805498651446),
267 Felt::new(10769146203951775298),
268 Felt::new(2774289833490417856),
269 ],
270 [
271 Felt::new(3794717687462954368),
272 Felt::new(4386865643074822822),
273 Felt::new(8854162840275334305),
274 Felt::new(7129983987107225269),
275 ],
276 [
277 Felt::new(7244773535611633983),
278 Felt::new(19359923075859320),
279 Felt::new(10898655967774994333),
280 Felt::new(9319339563065736480),
281 ],
282 [
283 Felt::new(4935426252518736883),
284 Felt::new(12584230452580950419),
285 Felt::new(8762518969632303998),
286 Felt::new(18159875708229758073),
287 ],
288 [
289 Felt::new(14871230873837295931),
290 Felt::new(11225255908868362971),
291 Felt::new(18100987641405432308),
292 Felt::new(1559244340089644233),
293 ],
294 [
295 Felt::new(8348203744950016968),
296 Felt::new(4041411241960726733),
297 Felt::new(17584743399305468057),
298 Felt::new(16836952610803537051),
299 ],
300 [
301 Felt::new(16139797453633030050),
302 Felt::new(1090233424040889412),
303 Felt::new(10770255347785669036),
304 Felt::new(16982398877290254028),
305 ],
306];