miden-crypto/src/hash/rescue/rpo/tests.rs
src/hash/rescue/rpo/tests.rsRaw
1use alloc::{collections::BTreeSet, vec::Vec};
2
3use proptest::prelude::*;
4use rand_utils::rand_value;
5
6use super::{
7 super::{apply_inv_sbox, apply_sbox, ALPHA, INV_ALPHA},
8 Felt, FieldElement, Hasher, Rpo256, RpoDigest, StarkField, ONE, STATE_WIDTH, ZERO,
9};
10use crate::Word;
11
12#[test]
13fn test_sbox() {
14 let state = [Felt::new(rand_value()); STATE_WIDTH];
15
16 let mut expected = state;
17 expected.iter_mut().for_each(|v| *v = v.exp(ALPHA));
18
19 let mut actual = state;
20 apply_sbox(&mut actual);
21
22 assert_eq!(expected, actual);
23}
24
25#[test]
26fn test_inv_sbox() {
27 let state = [Felt::new(rand_value()); STATE_WIDTH];
28
29 let mut expected = state;
30 expected.iter_mut().for_each(|v| *v = v.exp(INV_ALPHA));
31
32 let mut actual = state;
33 apply_inv_sbox(&mut actual);
34
35 assert_eq!(expected, actual);
36}
37
38#[test]
39fn hash_elements_vs_merge() {
40 let elements = [Felt::new(rand_value()); 8];
41
42 let digests: [RpoDigest; 2] = [
43 RpoDigest::new(elements[..4].try_into().unwrap()),
44 RpoDigest::new(elements[4..].try_into().unwrap()),
45 ];
46
47 let m_result = Rpo256::merge(&digests);
48 let h_result = Rpo256::hash_elements(&elements);
49 assert_eq!(m_result, h_result);
50}
51
52#[test]
53fn merge_vs_merge_in_domain() {
54 let elements = [Felt::new(rand_value()); 8];
55
56 let digests: [RpoDigest; 2] = [
57 RpoDigest::new(elements[..4].try_into().unwrap()),
58 RpoDigest::new(elements[4..].try_into().unwrap()),
59 ];
60 let merge_result = Rpo256::merge(&digests);
61
62 // ------------- merge with domain = 0
63 // ----------------------------------------------------------
64
65 // set domain to ZERO. This should not change the result.
66 let domain = ZERO;
67
68 let merge_in_domain_result = Rpo256::merge_in_domain(&digests, domain);
69 assert_eq!(merge_result, merge_in_domain_result);
70
71 // ------------- merge with domain = 1
72 // ----------------------------------------------------------
73
74 // set domain to ONE. This should change the result.
75 let domain = ONE;
76
77 let merge_in_domain_result = Rpo256::merge_in_domain(&digests, domain);
78 assert_ne!(merge_result, merge_in_domain_result);
79}
80
81#[test]
82fn hash_elements_vs_merge_with_int() {
83 let tmp = [Felt::new(rand_value()); 4];
84 let seed = RpoDigest::new(tmp);
85
86 // ----- value fits into a field element ------------------------------------------------------
87 let val: Felt = Felt::new(rand_value());
88 let m_result = Rpo256::merge_with_int(seed, val.as_int());
89
90 let mut elements = seed.as_elements().to_vec();
91 elements.push(val);
92 let h_result = Rpo256::hash_elements(&elements);
93
94 assert_eq!(m_result, h_result);
95
96 // ----- value does not fit into a field element ----------------------------------------------
97 let val = Felt::MODULUS + 2;
98 let m_result = Rpo256::merge_with_int(seed, val);
99
100 let mut elements = seed.as_elements().to_vec();
101 elements.push(Felt::new(val));
102 elements.push(ONE);
103 let h_result = Rpo256::hash_elements(&elements);
104
105 assert_eq!(m_result, h_result);
106}
107
108#[test]
109fn hash_padding() {
110 // adding a zero bytes at the end of a byte string should result in a different hash
111 let r1 = Rpo256::hash(&[1_u8, 2, 3]);
112 let r2 = Rpo256::hash(&[1_u8, 2, 3, 0]);
113 assert_ne!(r1, r2);
114
115 // same as above but with bigger inputs
116 let r1 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6]);
117 let r2 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6, 0]);
118 assert_ne!(r1, r2);
119
120 // same as above but with input splitting over two elements
121 let r1 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6, 7]);
122 let r2 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6, 7, 0]);
123 assert_ne!(r1, r2);
124
125 // same as above but with multiple zeros
126 let r1 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6, 7, 0, 0]);
127 let r2 = Rpo256::hash(&[1_u8, 2, 3, 4, 5, 6, 7, 0, 0, 0, 0]);
128 assert_ne!(r1, r2);
129}
130
131#[test]
132fn hash_elements_padding() {
133 let e1 = [Felt::new(rand_value()); 2];
134 let e2 = [e1[0], e1[1], ZERO];
135
136 let r1 = Rpo256::hash_elements(&e1);
137 let r2 = Rpo256::hash_elements(&e2);
138 assert_ne!(r1, r2);
139}
140
141#[test]
142fn hash_elements() {
143 let elements = [
144 ZERO,
145 ONE,
146 Felt::new(2),
147 Felt::new(3),
148 Felt::new(4),
149 Felt::new(5),
150 Felt::new(6),
151 Felt::new(7),
152 ];
153
154 let digests: [RpoDigest; 2] = [
155 RpoDigest::new(elements[..4].try_into().unwrap()),
156 RpoDigest::new(elements[4..8].try_into().unwrap()),
157 ];
158
159 let m_result = Rpo256::merge(&digests);
160 let h_result = Rpo256::hash_elements(&elements);
161 assert_eq!(m_result, h_result);
162}
163
164#[test]
165fn hash_test_vectors() {
166 let elements = [
167 ZERO,
168 ONE,
169 Felt::new(2),
170 Felt::new(3),
171 Felt::new(4),
172 Felt::new(5),
173 Felt::new(6),
174 Felt::new(7),
175 Felt::new(8),
176 Felt::new(9),
177 Felt::new(10),
178 Felt::new(11),
179 Felt::new(12),
180 Felt::new(13),
181 Felt::new(14),
182 Felt::new(15),
183 Felt::new(16),
184 Felt::new(17),
185 Felt::new(18),
186 ];
187
188 for i in 0..elements.len() {
189 let expected = RpoDigest::new(EXPECTED[i]);
190 let result = Rpo256::hash_elements(&elements[..(i + 1)]);
191 assert_eq!(result, expected);
192 }
193}
194
195#[test]
196fn sponge_bytes_with_remainder_length_wont_panic() {
197 // this test targets to assert that no panic will happen with the edge case of having an inputs
198 // with length that is not divisible by the used binary chunk size. 113 is a non-negligible
199 // input length that is prime; hence guaranteed to not be divisible by any choice of chunk
200 // size.
201 //
202 // this is a preliminary test to the fuzzy-stress of proptest.
203 Rpo256::hash(&[0; 113]);
204}
205
206#[test]
207fn sponge_collision_for_wrapped_field_element() {
208 let a = Rpo256::hash(&[0; 8]);
209 let b = Rpo256::hash(&Felt::MODULUS.to_le_bytes());
210 assert_ne!(a, b);
211}
212
213#[test]
214fn sponge_zeroes_collision() {
215 let mut zeroes = Vec::with_capacity(255);
216 let mut set = BTreeSet::new();
217 (0..255).for_each(|_| {
218 let hash = Rpo256::hash(&zeroes);
219 zeroes.push(0);
220 // panic if a collision was found
221 assert!(set.insert(hash));
222 });
223}
224
225proptest! {
226 #[test]
227 fn rpo256_wont_panic_with_arbitrary_input(ref bytes in any::<Vec<u8>>()) {
228 Rpo256::hash(bytes);
229 }
230}
231
232const EXPECTED: [Word; 19] = [
233 [
234 Felt::new(1502364727743950833),
235 Felt::new(5880949717274681448),
236 Felt::new(162790463902224431),
237 Felt::new(6901340476773664264),
238 ],
239 [
240 Felt::new(7478710183745780580),
241 Felt::new(3308077307559720969),
242 Felt::new(3383561985796182409),
243 Felt::new(17205078494700259815),
244 ],
245 [
246 Felt::new(17439912364295172999),
247 Felt::new(17979156346142712171),
248 Felt::new(8280795511427637894),
249 Felt::new(9349844417834368814),
250 ],
251 [
252 Felt::new(5105868198472766874),
253 Felt::new(13090564195691924742),
254 Felt::new(1058904296915798891),
255 Felt::new(18379501748825152268),
256 ],
257 [
258 Felt::new(9133662113608941286),
259 Felt::new(12096627591905525991),
260 Felt::new(14963426595993304047),
261 Felt::new(13290205840019973377),
262 ],
263 [
264 Felt::new(3134262397541159485),
265 Felt::new(10106105871979362399),
266 Felt::new(138768814855329459),
267 Felt::new(15044809212457404677),
268 ],
269 [
270 Felt::new(162696376578462826),
271 Felt::new(4991300494838863586),
272 Felt::new(660346084748120605),
273 Felt::new(13179389528641752698),
274 ],
275 [
276 Felt::new(2242391899857912644),
277 Felt::new(12689382052053305418),
278 Felt::new(235236990017815546),
279 Felt::new(5046143039268215739),
280 ],
281 [
282 Felt::new(9585630502158073976),
283 Felt::new(1310051013427303477),
284 Felt::new(7491921222636097758),
285 Felt::new(9417501558995216762),
286 ],
287 [
288 Felt::new(1994394001720334744),
289 Felt::new(10866209900885216467),
290 Felt::new(13836092831163031683),
291 Felt::new(10814636682252756697),
292 ],
293 [
294 Felt::new(17486854790732826405),
295 Felt::new(17376549265955727562),
296 Felt::new(2371059831956435003),
297 Felt::new(17585704935858006533),
298 ],
299 [
300 Felt::new(11368277489137713825),
301 Felt::new(3906270146963049287),
302 Felt::new(10236262408213059745),
303 Felt::new(78552867005814007),
304 ],
305 [
306 Felt::new(17899847381280262181),
307 Felt::new(14717912805498651446),
308 Felt::new(10769146203951775298),
309 Felt::new(2774289833490417856),
310 ],
311 [
312 Felt::new(3794717687462954368),
313 Felt::new(4386865643074822822),
314 Felt::new(8854162840275334305),
315 Felt::new(7129983987107225269),
316 ],
317 [
318 Felt::new(7244773535611633983),
319 Felt::new(19359923075859320),
320 Felt::new(10898655967774994333),
321 Felt::new(9319339563065736480),
322 ],
323 [
324 Felt::new(4935426252518736883),
325 Felt::new(12584230452580950419),
326 Felt::new(8762518969632303998),
327 Felt::new(18159875708229758073),
328 ],
329 [
330 Felt::new(14871230873837295931),
331 Felt::new(11225255908868362971),
332 Felt::new(18100987641405432308),
333 Felt::new(1559244340089644233),
334 ],
335 [
336 Felt::new(8348203744950016968),
337 Felt::new(4041411241960726733),
338 Felt::new(17584743399305468057),
339 Felt::new(16836952610803537051),
340 ],
341 [
342 Felt::new(16139797453633030050),
343 Felt::new(1090233424040889412),
344 Felt::new(10770255347785669036),
345 Felt::new(16982398877290254028),
346 ],
347];