src/vendor/siphasher/src/tests.rs

   1 // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11
  12 use std::hash::{Hash, Hasher};
  13 use sip::{SipHasher, SipHasher13, SipHasher24};
  14
  15 // Hash just the bytes of the slice, without length prefix
  16 struct Bytes<'a>(&'a [u8]);
  17
  18 impl<'a> Hash for Bytes<'a> {
  19     #[allow(unused_must_use)]
  20     fn hash<H: Hasher>(&self, state: &mut H) {
  21         let Bytes(v) = *self;
  22         state.write(v);
  23     }
  24 }
  25
  26 macro_rules! u8to64_le {
  27     ($buf:expr, $i:expr) =>
  28     ($buf[0+$i] as u64 |
  29      ($buf[1+$i] as u64) << 8 |
  30      ($buf[2+$i] as u64) << 16 |
  31      ($buf[3+$i] as u64) << 24 |
  32      ($buf[4+$i] as u64) << 32 |
  33      ($buf[5+$i] as u64) << 40 |
  34      ($buf[6+$i] as u64) << 48 |
  35      ($buf[7+$i] as u64) << 56);
  36     ($buf:expr, $i:expr, $len:expr) =>
  37     ({
  38         let mut t = 0;
  39         let mut out = 0;
  40         while t < $len {
  41             out |= ($buf[t+$i] as u64) << t*8;
  42             t += 1;
  43         }
  44         out
  45     });
  46 }
  47
  48 fn hash_with<H: Hasher, T: Hash>(mut st: H, x: &T) -> u64 {
  49     x.hash(&mut st);
  50     st.finish()
  51 }
  52
  53 fn hash<T: Hash>(x: &T) -> u64 {
  54     hash_with(SipHasher::new(), x)
  55 }
  56
  57 #[test]
  58 #[allow(unused_must_use)]
  59 fn test_siphash_1_3() {
  60     let vecs: [[u8; 8]; 64] = [
  61         [0xdc, 0xc4, 0x0f, 0x05, 0x58, 0x01, 0xac, 0xab],
  62         [0x93, 0xca, 0x57, 0x7d, 0xf3, 0x9b, 0xf4, 0xc9],
  63         [0x4d, 0xd4, 0xc7, 0x4d, 0x02, 0x9b, 0xcb, 0x82],
  64         [0xfb, 0xf7, 0xdd, 0xe7, 0xb8, 0x0a, 0xf8, 0x8b],
  65         [0x28, 0x83, 0xd3, 0x88, 0x60, 0x57, 0x75, 0xcf],
  66         [0x67, 0x3b, 0x53, 0x49, 0x2f, 0xd5, 0xf9, 0xde],
  67         [0xa7, 0x22, 0x9f, 0xc5, 0x50, 0x2b, 0x0d, 0xc5],
  68         [0x40, 0x11, 0xb1, 0x9b, 0x98, 0x7d, 0x92, 0xd3],
  69         [0x8e, 0x9a, 0x29, 0x8d, 0x11, 0x95, 0x90, 0x36],
  70         [0xe4, 0x3d, 0x06, 0x6c, 0xb3, 0x8e, 0xa4, 0x25],
  71         [0x7f, 0x09, 0xff, 0x92, 0xee, 0x85, 0xde, 0x79],
  72         [0x52, 0xc3, 0x4d, 0xf9, 0xc1, 0x18, 0xc1, 0x70],
  73         [0xa2, 0xd9, 0xb4, 0x57, 0xb1, 0x84, 0xa3, 0x78],
  74         [0xa7, 0xff, 0x29, 0x12, 0x0c, 0x76, 0x6f, 0x30],
  75         [0x34, 0x5d, 0xf9, 0xc0, 0x11, 0xa1, 0x5a, 0x60],
  76         [0x56, 0x99, 0x51, 0x2a, 0x6d, 0xd8, 0x20, 0xd3],
  77         [0x66, 0x8b, 0x90, 0x7d, 0x1a, 0xdd, 0x4f, 0xcc],
  78         [0x0c, 0xd8, 0xdb, 0x63, 0x90, 0x68, 0xf2, 0x9c],
  79         [0x3e, 0xe6, 0x73, 0xb4, 0x9c, 0x38, 0xfc, 0x8f],
  80         [0x1c, 0x7d, 0x29, 0x8d, 0xe5, 0x9d, 0x1f, 0xf2],
  81         [0x40, 0xe0, 0xcc, 0xa6, 0x46, 0x2f, 0xdc, 0xc0],
  82         [0x44, 0xf8, 0x45, 0x2b, 0xfe, 0xab, 0x92, 0xb9],
  83         [0x2e, 0x87, 0x20, 0xa3, 0x9b, 0x7b, 0xfe, 0x7f],
  84         [0x23, 0xc1, 0xe6, 0xda, 0x7f, 0x0e, 0x5a, 0x52],
  85         [0x8c, 0x9c, 0x34, 0x67, 0xb2, 0xae, 0x64, 0xf4],
  86         [0x79, 0x09, 0x5b, 0x70, 0x28, 0x59, 0xcd, 0x45],
  87         [0xa5, 0x13, 0x99, 0xca, 0xe3, 0x35, 0x3e, 0x3a],
  88         [0x35, 0x3b, 0xde, 0x4a, 0x4e, 0xc7, 0x1d, 0xa9],
  89         [0x0d, 0xd0, 0x6c, 0xef, 0x02, 0xed, 0x0b, 0xfb],
  90         [0xf4, 0xe1, 0xb1, 0x4a, 0xb4, 0x3c, 0xd9, 0x88],
  91         [0x63, 0xe6, 0xc5, 0x43, 0xd6, 0x11, 0x0f, 0x54],
  92         [0xbc, 0xd1, 0x21, 0x8c, 0x1f, 0xdd, 0x70, 0x23],
  93         [0x0d, 0xb6, 0xa7, 0x16, 0x6c, 0x7b, 0x15, 0x81],
  94         [0xbf, 0xf9, 0x8f, 0x7a, 0xe5, 0xb9, 0x54, 0x4d],
  95         [0x3e, 0x75, 0x2a, 0x1f, 0x78, 0x12, 0x9f, 0x75],
  96         [0x91, 0x6b, 0x18, 0xbf, 0xbe, 0xa3, 0xa1, 0xce],
  97         [0x06, 0x62, 0xa2, 0xad, 0xd3, 0x08, 0xf5, 0x2c],
  98         [0x57, 0x30, 0xc3, 0xa3, 0x2d, 0x1c, 0x10, 0xb6],
  99         [0xa1, 0x36, 0x3a, 0xae, 0x96, 0x74, 0xf4, 0xb3],
 100         [0x92, 0x83, 0x10, 0x7b, 0x54, 0x57, 0x6b, 0x62],
 101         [0x31, 0x15, 0xe4, 0x99, 0x32, 0x36, 0xd2, 0xc1],
 102         [0x44, 0xd9, 0x1a, 0x3f, 0x92, 0xc1, 0x7c, 0x66],
 103         [0x25, 0x88, 0x13, 0xc8, 0xfe, 0x4f, 0x70, 0x65],
 104         [0xa6, 0x49, 0x89, 0xc2, 0xd1, 0x80, 0xf2, 0x24],
 105         [0x6b, 0x87, 0xf8, 0xfa, 0xed, 0x1c, 0xca, 0xc2],
 106         [0x96, 0x21, 0x04, 0x9f, 0xfc, 0x4b, 0x16, 0xc2],
 107         [0x23, 0xd6, 0xb1, 0x68, 0x93, 0x9c, 0x6e, 0xa1],
 108         [0xfd, 0x14, 0x51, 0x8b, 0x9c, 0x16, 0xfb, 0x49],
 109         [0x46, 0x4c, 0x07, 0xdf, 0xf8, 0x43, 0x31, 0x9f],
 110         [0xb3, 0x86, 0xcc, 0x12, 0x24, 0xaf, 0xfd, 0xc6],
 111         [0x8f, 0x09, 0x52, 0x0a, 0xd1, 0x49, 0xaf, 0x7e],
 112         [0x9a, 0x2f, 0x29, 0x9d, 0x55, 0x13, 0xf3, 0x1c],
 113         [0x12, 0x1f, 0xf4, 0xa2, 0xdd, 0x30, 0x4a, 0xc4],
 114         [0xd0, 0x1e, 0xa7, 0x43, 0x89, 0xe9, 0xfa, 0x36],
 115         [0xe6, 0xbc, 0xf0, 0x73, 0x4c, 0xb3, 0x8f, 0x31],
 116         [0x80, 0xe9, 0xa7, 0x70, 0x36, 0xbf, 0x7a, 0xa2],
 117         [0x75, 0x6d, 0x3c, 0x24, 0xdb, 0xc0, 0xbc, 0xb4],
 118         [0x13, 0x15, 0xb7, 0xfd, 0x52, 0xd8, 0xf8, 0x23],
 119         [0x08, 0x8a, 0x7d, 0xa6, 0x4d, 0x5f, 0x03, 0x8f],
 120         [0x48, 0xf1, 0xe8, 0xb7, 0xe5, 0xd0, 0x9c, 0xd8],
 121         [0xee, 0x44, 0xa6, 0xf7, 0xbc, 0xe6, 0xf4, 0xf6],
 122         [0xf2, 0x37, 0x18, 0x0f, 0xd8, 0x9a, 0xc5, 0xae],
 123         [0xe0, 0x94, 0x66, 0x4b, 0x15, 0xf6, 0xb2, 0xc3],
 124         [0xa8, 0xb3, 0xbb, 0xb7, 0x62, 0x90, 0x19, 0x9d],
 125     ];
 126
 127     let k0 = 0x_07_06_05_04_03_02_01_00;
 128     let k1 = 0x_0f_0e_0d_0c_0b_0a_09_08;
 129     let mut buf = Vec::new();
 130     let mut t = 0;
 131     let mut state_inc = SipHasher13::new_with_keys(k0, k1);
 132
 133     while t < 64 {
 134         let vec = u8to64_le!(vecs[t], 0);
 135         let out = hash_with(SipHasher13::new_with_keys(k0, k1), &Bytes(&buf));
 136         assert_eq!(vec, out);
 137
 138         let full = hash_with(SipHasher13::new_with_keys(k0, k1), &Bytes(&buf));
 139         let i = state_inc.finish();
 140
 141         assert_eq!(full, i);
 142         assert_eq!(full, vec);
 143
 144         buf.push(t as u8);
 145         Hasher::write(&mut state_inc, &[t as u8]);
 146
 147         t += 1;
 148     }
 149 }
 150
 151 #[test]
 152 #[allow(unused_must_use)]
 153 fn test_siphash_2_4() {
 154     let vecs: [[u8; 8]; 64] = [
 155         [0x31, 0x0e, 0x0e, 0xdd, 0x47, 0xdb, 0x6f, 0x72],
 156         [0xfd, 0x67, 0xdc, 0x93, 0xc5, 0x39, 0xf8, 0x74],
 157         [0x5a, 0x4f, 0xa9, 0xd9, 0x09, 0x80, 0x6c, 0x0d],
 158         [0x2d, 0x7e, 0xfb, 0xd7, 0x96, 0x66, 0x67, 0x85],
 159         [0xb7, 0x87, 0x71, 0x27, 0xe0, 0x94, 0x27, 0xcf],
 160         [0x8d, 0xa6, 0x99, 0xcd, 0x64, 0x55, 0x76, 0x18],
 161         [0xce, 0xe3, 0xfe, 0x58, 0x6e, 0x46, 0xc9, 0xcb],
 162         [0x37, 0xd1, 0x01, 0x8b, 0xf5, 0x00, 0x02, 0xab],
 163         [0x62, 0x24, 0x93, 0x9a, 0x79, 0xf5, 0xf5, 0x93],
 164         [0xb0, 0xe4, 0xa9, 0x0b, 0xdf, 0x82, 0x00, 0x9e],
 165         [0xf3, 0xb9, 0xdd, 0x94, 0xc5, 0xbb, 0x5d, 0x7a],
 166         [0xa7, 0xad, 0x6b, 0x22, 0x46, 0x2f, 0xb3, 0xf4],
 167         [0xfb, 0xe5, 0x0e, 0x86, 0xbc, 0x8f, 0x1e, 0x75],
 168         [0x90, 0x3d, 0x84, 0xc0, 0x27, 0x56, 0xea, 0x14],
 169         [0xee, 0xf2, 0x7a, 0x8e, 0x90, 0xca, 0x23, 0xf7],
 170         [0xe5, 0x45, 0xbe, 0x49, 0x61, 0xca, 0x29, 0xa1],
 171         [0xdb, 0x9b, 0xc2, 0x57, 0x7f, 0xcc, 0x2a, 0x3f],
 172         [0x94, 0x47, 0xbe, 0x2c, 0xf5, 0xe9, 0x9a, 0x69],
 173         [0x9c, 0xd3, 0x8d, 0x96, 0xf0, 0xb3, 0xc1, 0x4b],
 174         [0xbd, 0x61, 0x79, 0xa7, 0x1d, 0xc9, 0x6d, 0xbb],
 175         [0x98, 0xee, 0xa2, 0x1a, 0xf2, 0x5c, 0xd6, 0xbe],
 176         [0xc7, 0x67, 0x3b, 0x2e, 0xb0, 0xcb, 0xf2, 0xd0],
 177         [0x88, 0x3e, 0xa3, 0xe3, 0x95, 0x67, 0x53, 0x93],
 178         [0xc8, 0xce, 0x5c, 0xcd, 0x8c, 0x03, 0x0c, 0xa8],
 179         [0x94, 0xaf, 0x49, 0xf6, 0xc6, 0x50, 0xad, 0xb8],
 180         [0xea, 0xb8, 0x85, 0x8a, 0xde, 0x92, 0xe1, 0xbc],
 181         [0xf3, 0x15, 0xbb, 0x5b, 0xb8, 0x35, 0xd8, 0x17],
 182         [0xad, 0xcf, 0x6b, 0x07, 0x63, 0x61, 0x2e, 0x2f],
 183         [0xa5, 0xc9, 0x1d, 0xa7, 0xac, 0xaa, 0x4d, 0xde],
 184         [0x71, 0x65, 0x95, 0x87, 0x66, 0x50, 0xa2, 0xa6],
 185         [0x28, 0xef, 0x49, 0x5c, 0x53, 0xa3, 0x87, 0xad],
 186         [0x42, 0xc3, 0x41, 0xd8, 0xfa, 0x92, 0xd8, 0x32],
 187         [0xce, 0x7c, 0xf2, 0x72, 0x2f, 0x51, 0x27, 0x71],
 188         [0xe3, 0x78, 0x59, 0xf9, 0x46, 0x23, 0xf3, 0xa7],
 189         [0x38, 0x12, 0x05, 0xbb, 0x1a, 0xb0, 0xe0, 0x12],
 190         [0xae, 0x97, 0xa1, 0x0f, 0xd4, 0x34, 0xe0, 0x15],
 191         [0xb4, 0xa3, 0x15, 0x08, 0xbe, 0xff, 0x4d, 0x31],
 192         [0x81, 0x39, 0x62, 0x29, 0xf0, 0x90, 0x79, 0x02],
 193         [0x4d, 0x0c, 0xf4, 0x9e, 0xe5, 0xd4, 0xdc, 0xca],
 194         [0x5c, 0x73, 0x33, 0x6a, 0x76, 0xd8, 0xbf, 0x9a],
 195         [0xd0, 0xa7, 0x04, 0x53, 0x6b, 0xa9, 0x3e, 0x0e],
 196         [0x92, 0x59, 0x58, 0xfc, 0xd6, 0x42, 0x0c, 0xad],
 197         [0xa9, 0x15, 0xc2, 0x9b, 0xc8, 0x06, 0x73, 0x18],
 198         [0x95, 0x2b, 0x79, 0xf3, 0xbc, 0x0a, 0xa6, 0xd4],
 199         [0xf2, 0x1d, 0xf2, 0xe4, 0x1d, 0x45, 0x35, 0xf9],
 200         [0x87, 0x57, 0x75, 0x19, 0x04, 0x8f, 0x53, 0xa9],
 201         [0x10, 0xa5, 0x6c, 0xf5, 0xdf, 0xcd, 0x9a, 0xdb],
 202         [0xeb, 0x75, 0x09, 0x5c, 0xcd, 0x98, 0x6c, 0xd0],
 203         [0x51, 0xa9, 0xcb, 0x9e, 0xcb, 0xa3, 0x12, 0xe6],
 204         [0x96, 0xaf, 0xad, 0xfc, 0x2c, 0xe6, 0x66, 0xc7],
 205         [0x72, 0xfe, 0x52, 0x97, 0x5a, 0x43, 0x64, 0xee],
 206         [0x5a, 0x16, 0x45, 0xb2, 0x76, 0xd5, 0x92, 0xa1],
 207         [0xb2, 0x74, 0xcb, 0x8e, 0xbf, 0x87, 0x87, 0x0a],
 208         [0x6f, 0x9b, 0xb4, 0x20, 0x3d, 0xe7, 0xb3, 0x81],
 209         [0xea, 0xec, 0xb2, 0xa3, 0x0b, 0x22, 0xa8, 0x7f],
 210         [0x99, 0x24, 0xa4, 0x3c, 0xc1, 0x31, 0x57, 0x24],
 211         [0xbd, 0x83, 0x8d, 0x3a, 0xaf, 0xbf, 0x8d, 0xb7],
 212         [0x0b, 0x1a, 0x2a, 0x32, 0x65, 0xd5, 0x1a, 0xea],
 213         [0x13, 0x50, 0x79, 0xa3, 0x23, 0x1c, 0xe6, 0x60],
 214         [0x93, 0x2b, 0x28, 0x46, 0xe4, 0xd7, 0x06, 0x66],
 215         [0xe1, 0x91, 0x5f, 0x5c, 0xb1, 0xec, 0xa4, 0x6c],
 216         [0xf3, 0x25, 0x96, 0x5c, 0xa1, 0x6d, 0x62, 0x9f],
 217         [0x57, 0x5f, 0xf2, 0x8e, 0x60, 0x38, 0x1b, 0xe5],
 218         [0x72, 0x45, 0x06, 0xeb, 0x4c, 0x32, 0x8a, 0x95],
 219     ];
 220
 221     let k0 = 0x_07_06_05_04_03_02_01_00;
 222     let k1 = 0x_0f_0e_0d_0c_0b_0a_09_08;
 223     let mut buf = Vec::new();
 224     let mut t = 0;
 225     let mut state_inc = SipHasher24::new_with_keys(k0, k1);
 226
 227     while t < 64 {
 228         let vec = u8to64_le!(vecs[t], 0);
 229         let out = hash_with(SipHasher24::new_with_keys(k0, k1), &Bytes(&buf));
 230         assert_eq!(vec, out);
 231
 232         let full = hash_with(SipHasher24::new_with_keys(k0, k1), &Bytes(&buf));
 233         let i = state_inc.finish();
 234
 235         assert_eq!(full, i);
 236         assert_eq!(full, vec);
 237
 238         buf.push(t as u8);
 239         Hasher::write(&mut state_inc, &[t as u8]);
 240
 241         t += 1;
 242     }
 243 }
 244 #[test]
 245 #[cfg(target_arch = "arm")]
 246 fn test_hash_usize() {
 247     let val = 0xdeadbeef_deadbeef_u64;
 248     assert_ne!(hash(&(val as u64)), hash(&(val as usize)));
 249     assert_eq!(hash(&(val as u32)), hash(&(val as usize)));
 250 }
 251 #[test]
 252 #[cfg(target_arch = "x86_64")]
 253 fn test_hash_usize() {
 254     let val = 0xdeadbeef_deadbeef_u64;
 255     assert_eq!(hash(&(val as u64)), hash(&(val as usize)));
 256     assert_ne!(hash(&(val as u32)), hash(&(val as usize)));
 257 }
 258 #[test]
 259 #[cfg(target_arch = "x86")]
 260 fn test_hash_usize() {
 261     let val = 0xdeadbeef_deadbeef_u64;
 262     assert_ne(hash(&(val as u64)), hash(&(val as usize)));
 263     assert_eq!(hash(&(val as u32)), hash(&(val as usize)));
 264 }
 265
 266 #[test]
 267 fn test_hash_idempotent() {
 268     let val64 = 0xdeadbeef_deadbeef_u64;
 269     assert_eq!(hash(&val64), hash(&val64));
 270     let val32 = 0xdeadbeef_u32;
 271     assert_eq!(hash(&val32), hash(&val32));
 272 }
 273
 274 #[test]
 275 fn test_hash_no_bytes_dropped_64() {
 276     let val = 0xdeadbeef_deadbeef_u64;
 277
 278     assert_ne!(hash(&val), hash(&zero_byte(val, 0)));
 279     assert_ne!(hash(&val), hash(&zero_byte(val, 1)));
 280     assert_ne!(hash(&val), hash(&zero_byte(val, 2)));
 281     assert_ne!(hash(&val), hash(&zero_byte(val, 3)));
 282     assert_ne!(hash(&val), hash(&zero_byte(val, 4)));
 283     assert_ne!(hash(&val), hash(&zero_byte(val, 5)));
 284     assert_ne!(hash(&val), hash(&zero_byte(val, 6)));
 285     assert_ne!(hash(&val), hash(&zero_byte(val, 7)));
 286
 287     fn zero_byte(val: u64, byte: usize) -> u64 {
 288         assert!(byte < 8);
 289         val & !(0xff << (byte * 8))
 290     }
 291 }
 292
 293 #[test]
 294 fn test_hash_no_bytes_dropped_32() {
 295     let val = 0xdeadbeef_u32;
 296
 297     assert_ne!(hash(&val), hash(&zero_byte(val, 0)));
 298     assert_ne!(hash(&val), hash(&zero_byte(val, 1)));
 299     assert_ne!(hash(&val), hash(&zero_byte(val, 2)));
 300     assert_ne!(hash(&val), hash(&zero_byte(val, 3)));
 301
 302     fn zero_byte(val: u32, byte: usize) -> u32 {
 303         assert!(byte < 4);
 304         val & !(0xff << (byte * 8))
 305     }
 306 }
 307
 308 #[test]
 309 fn test_hash_no_concat_alias() {
 310     let s = ("aa", "bb");
 311     let t = ("aabb", "");
 312     let u = ("a", "abb");
 313
 314     assert!(s != t && t != u);
 315     assert!(hash(&s) != hash(&t) && hash(&s) != hash(&u));
 316
 317     let u = [1, 0, 0, 0];
 318     let v = (&u[..1], &u[1..3], &u[3..]);
 319     let w = (&u[..], &u[4..4], &u[4..4]);
 320
 321     assert_ne!(v, w);
 322     assert_ne!(hash(&v), hash(&w));
 323 }