|
| 1 | +use core::convert::TryInto; |
| 2 | + |
| 3 | +pub const DIGEST_BUF_LEN: usize = 4; |
| 4 | +pub const WORK_BUF_LEN: usize = 16; |
| 5 | + |
| 6 | +pub const H0: [u32; DIGEST_BUF_LEN] = [ |
| 7 | + 0x6745_2301, |
| 8 | + 0xefcd_ab89, |
| 9 | + 0x98ba_dcfe, |
| 10 | + 0x1032_5476, |
| 11 | +]; |
| 12 | + |
| 13 | +macro_rules! round( |
| 14 | + ($a:expr, $b:expr, $c:expr, $d:expr, |
| 15 | + $x:expr, $bits:expr, $add:expr, $round:expr) => ({ |
| 16 | + $a = $a.wrapping_add($round).wrapping_add($x).wrapping_add($add); |
| 17 | + $a = $a.rotate_left($bits); |
| 18 | + }); |
| 19 | +); |
| 20 | + |
| 21 | +macro_rules! process_block( |
| 22 | + ($h:ident, $data:expr, |
| 23 | + $( round1: h_ordering $f0:expr, $f1:expr, $f2:expr, $f3:expr; |
| 24 | + data_index $data_index1:expr; roll_shift $bits1:expr )*; |
| 25 | + $( round2: h_ordering $g0:expr, $g1:expr, $g2:expr, $g3:expr; |
| 26 | + data_index $data_index2:expr; roll_shift $bits2:expr )*; |
| 27 | + $( round3: h_ordering $h0:expr, $h1:expr, $h2:expr, $h3:expr; |
| 28 | + data_index $data_index3:expr; roll_shift $bits3:expr )*; |
| 29 | + $( round4: h_ordering $i0:expr, $i1:expr, $i2:expr, $i3:expr; |
| 30 | + data_index $data_index4:expr; roll_shift $bits4:expr )*; |
| 31 | + $( par_round1: h_ordering $pi0:expr, $pi1:expr, $pi2:expr, $pi3:expr; |
| 32 | + data_index $pdata_index1:expr; roll_shift $pbits1:expr )*; |
| 33 | + $( par_round2: h_ordering $ph0:expr, $ph1:expr, $ph2:expr, $ph3:expr; |
| 34 | + data_index $pdata_index2:expr; roll_shift $pbits2:expr )*; |
| 35 | + $( par_round3: h_ordering $pg0:expr, $pg1:expr, $pg2:expr, $pg3:expr; |
| 36 | + data_index $pdata_index3:expr; roll_shift $pbits3:expr )*; |
| 37 | + $( par_round4: h_ordering $pf0:expr, $pf1:expr, $pf2:expr, $pf3:expr; |
| 38 | + data_index $pdata_index4:expr; roll_shift $pbits4:expr )*; |
| 39 | + ) => ({ |
| 40 | + let mut bb = *$h; |
| 41 | + let mut bbb = *$h; |
| 42 | + |
| 43 | + // Round 1 |
| 44 | + $( round!(bb[$f0], bb[$f1], bb[$f2], bb[$f3], |
| 45 | + $data[$data_index1], $bits1, 0x0000_0000, |
| 46 | + bb[$f1] ^ bb[$f2] ^ bb[$f3]); )* |
| 47 | + |
| 48 | + // Round 2 |
| 49 | + $( round!(bb[$g0], bb[$g1], bb[$g2], bb[$g3], |
| 50 | + $data[$data_index2], $bits2, 0x5a82_7999, |
| 51 | + (bb[$g1] & bb[$g2]) | (!bb[$g1] & bb[$g3])); )* |
| 52 | + |
| 53 | + // Round 3 |
| 54 | + $( round!(bb[$h0], bb[$h1], bb[$h2], bb[$h3], |
| 55 | + $data[$data_index3], $bits3, 0x6ed9_eba1, |
| 56 | + (bb[$h1] | !bb[$h2]) ^ bb[$h3]); )* |
| 57 | + |
| 58 | + // Round 4 |
| 59 | + $( round!(bb[$i0], bb[$i1], bb[$i2], bb[$i3], |
| 60 | + $data[$data_index4], $bits4, 0x8f1b_bcdc, |
| 61 | + (bb[$i1] & bb[$i3]) | (bb[$i2] & !bb[$i3])); )* |
| 62 | + |
| 63 | + // Parallel rounds: these are the same as the previous five |
| 64 | + // rounds except that the constants have changed, we work |
| 65 | + // with the other buffer, and they are applied in reverse |
| 66 | + // order. |
| 67 | + |
| 68 | + // Parallel Round 1 |
| 69 | + $( round!(bbb[$pi0], bbb[$pi1], bbb[$pi2], bbb[$pi3], |
| 70 | + $data[$pdata_index1], $pbits1, 0x50a2_8be6, |
| 71 | + (bbb[$pi1] & bbb[$pi3]) | (bbb[$pi2] & !bbb[$pi3])); )* |
| 72 | + |
| 73 | + // Parallel Round 2 |
| 74 | + $( round!(bbb[$ph0], bbb[$ph1], bbb[$ph2], bbb[$ph3], |
| 75 | + $data[$pdata_index2], $pbits2, 0x5c4d_d124, |
| 76 | + (bbb[$ph1] | !bbb[$ph2]) ^ bbb[$ph3]); )* |
| 77 | + |
| 78 | + // Parallel Round 3 |
| 79 | + $( round!(bbb[$pg0], bbb[$pg1], bbb[$pg2], bbb[$pg3], |
| 80 | + $data[$pdata_index3], $pbits3, 0x6d70_3ef3, |
| 81 | + (bbb[$pg1] & bbb[$pg2]) | (!bbb[$pg1] & bbb[$pg3])); )* |
| 82 | + |
| 83 | + // Parallel Round 4 |
| 84 | + $( round!(bbb[$pf0], bbb[$pf1], bbb[$pf2], bbb[$pf3], |
| 85 | + $data[$pdata_index4], $pbits4, 0x0000_0000, |
| 86 | + bbb[$pf1] ^ bbb[$pf2] ^ bbb[$pf3]); )* |
| 87 | + |
| 88 | + // Combine results |
| 89 | + bbb[3] = bbb[3].wrapping_add($h[1]).wrapping_add(bb[2]); |
| 90 | + $h[1] = $h[2].wrapping_add(bb[3]).wrapping_add(bbb[0]); |
| 91 | + $h[2] = $h[3].wrapping_add(bb[0]).wrapping_add(bbb[1]); |
| 92 | + $h[3] = $h[0].wrapping_add(bb[1]).wrapping_add(bbb[2]); |
| 93 | + $h[0] = bbb[3]; |
| 94 | + }); |
| 95 | +); |
| 96 | + |
| 97 | +pub fn compress(h: &mut [u32; DIGEST_BUF_LEN], data: &[u8; 64]) { |
| 98 | + let mut w = [0u32; WORK_BUF_LEN]; |
| 99 | + for (o, chunk) in w.iter_mut().zip(data.chunks_exact(4)) { |
| 100 | + *o = u32::from_le_bytes(chunk.try_into().unwrap()); |
| 101 | + } |
| 102 | + process_block!(h, w[..], |
| 103 | + // Round 1 |
| 104 | + round1: h_ordering 0, 1, 2, 3; data_index 0; roll_shift 11 |
| 105 | + round1: h_ordering 3, 0, 1, 2; data_index 1; roll_shift 14 |
| 106 | + round1: h_ordering 2, 3, 0, 1; data_index 2; roll_shift 15 |
| 107 | + round1: h_ordering 1, 2, 3, 0; data_index 3; roll_shift 12 |
| 108 | + round1: h_ordering 0, 1, 2, 3; data_index 4; roll_shift 5 |
| 109 | + round1: h_ordering 3, 0, 1, 2; data_index 5; roll_shift 8 |
| 110 | + round1: h_ordering 2, 3, 0, 1; data_index 6; roll_shift 7 |
| 111 | + round1: h_ordering 1, 2, 3, 0; data_index 7; roll_shift 9 |
| 112 | + round1: h_ordering 0, 1, 2, 3; data_index 8; roll_shift 11 |
| 113 | + round1: h_ordering 3, 0, 1, 2; data_index 9; roll_shift 13 |
| 114 | + round1: h_ordering 2, 3, 0, 1; data_index 10; roll_shift 14 |
| 115 | + round1: h_ordering 1, 2, 3, 0; data_index 11; roll_shift 15 |
| 116 | + round1: h_ordering 0, 1, 2, 3; data_index 12; roll_shift 6 |
| 117 | + round1: h_ordering 3, 0, 1, 2; data_index 13; roll_shift 7 |
| 118 | + round1: h_ordering 2, 3, 0, 1; data_index 14; roll_shift 9 |
| 119 | + round1: h_ordering 1, 2, 3, 0; data_index 15; roll_shift 8; |
| 120 | + |
| 121 | + // Round 2 |
| 122 | + round2: h_ordering 0, 1, 2, 3; data_index 7; roll_shift 7 |
| 123 | + round2: h_ordering 3, 0, 1, 2; data_index 4; roll_shift 6 |
| 124 | + round2: h_ordering 2, 3, 0, 1; data_index 13; roll_shift 8 |
| 125 | + round2: h_ordering 1, 2, 3, 0; data_index 1; roll_shift 13 |
| 126 | + round2: h_ordering 0, 1, 2, 3; data_index 10; roll_shift 11 |
| 127 | + round2: h_ordering 3, 0, 1, 2; data_index 6; roll_shift 9 |
| 128 | + round2: h_ordering 2, 3, 0, 1; data_index 15; roll_shift 7 |
| 129 | + round2: h_ordering 1, 2, 3, 0; data_index 3; roll_shift 15 |
| 130 | + round2: h_ordering 0, 1, 2, 3; data_index 12; roll_shift 7 |
| 131 | + round2: h_ordering 3, 0, 1, 2; data_index 0; roll_shift 12 |
| 132 | + round2: h_ordering 2, 3, 0, 1; data_index 9; roll_shift 15 |
| 133 | + round2: h_ordering 1, 2, 3, 0; data_index 5; roll_shift 9 |
| 134 | + round2: h_ordering 0, 1, 2, 3; data_index 2; roll_shift 11 |
| 135 | + round2: h_ordering 3, 0, 1, 2; data_index 14; roll_shift 7 |
| 136 | + round2: h_ordering 2, 3, 0, 1; data_index 11; roll_shift 13 |
| 137 | + round2: h_ordering 1, 2, 3, 0; data_index 8; roll_shift 12; |
| 138 | + |
| 139 | + // Round 3 |
| 140 | + round3: h_ordering 0, 1, 2, 3; data_index 3; roll_shift 11 |
| 141 | + round3: h_ordering 3, 0, 1, 2; data_index 10; roll_shift 13 |
| 142 | + round3: h_ordering 2, 3, 0, 1; data_index 14; roll_shift 6 |
| 143 | + round3: h_ordering 1, 2, 3, 0; data_index 4; roll_shift 7 |
| 144 | + round3: h_ordering 0, 1, 2, 3; data_index 9; roll_shift 14 |
| 145 | + round3: h_ordering 3, 0, 1, 2; data_index 15; roll_shift 9 |
| 146 | + round3: h_ordering 2, 3, 0, 1; data_index 8; roll_shift 13 |
| 147 | + round3: h_ordering 1, 2, 3, 0; data_index 1; roll_shift 15 |
| 148 | + round3: h_ordering 0, 1, 2, 3; data_index 2; roll_shift 14 |
| 149 | + round3: h_ordering 3, 0, 1, 2; data_index 7; roll_shift 8 |
| 150 | + round3: h_ordering 2, 3, 0, 1; data_index 0; roll_shift 13 |
| 151 | + round3: h_ordering 1, 2, 3, 0; data_index 6; roll_shift 6 |
| 152 | + round3: h_ordering 0, 1, 2, 3; data_index 13; roll_shift 5 |
| 153 | + round3: h_ordering 3, 0, 1, 2; data_index 11; roll_shift 12 |
| 154 | + round3: h_ordering 2, 3, 0, 1; data_index 5; roll_shift 7 |
| 155 | + round3: h_ordering 1, 2, 3, 0; data_index 12; roll_shift 5; |
| 156 | + |
| 157 | + // Round 4 |
| 158 | + round4: h_ordering 0, 1, 2, 3; data_index 1; roll_shift 11 |
| 159 | + round4: h_ordering 3, 0, 1, 2; data_index 9; roll_shift 12 |
| 160 | + round4: h_ordering 2, 3, 0, 1; data_index 11; roll_shift 14 |
| 161 | + round4: h_ordering 1, 2, 3, 0; data_index 10; roll_shift 15 |
| 162 | + round4: h_ordering 0, 1, 2, 3; data_index 0; roll_shift 14 |
| 163 | + round4: h_ordering 3, 0, 1, 2; data_index 8; roll_shift 15 |
| 164 | + round4: h_ordering 2, 3, 0, 1; data_index 12; roll_shift 9 |
| 165 | + round4: h_ordering 1, 2, 3, 0; data_index 4; roll_shift 8 |
| 166 | + round4: h_ordering 0, 1, 2, 3; data_index 13; roll_shift 9 |
| 167 | + round4: h_ordering 3, 0, 1, 2; data_index 3; roll_shift 14 |
| 168 | + round4: h_ordering 2, 3, 0, 1; data_index 7; roll_shift 5 |
| 169 | + round4: h_ordering 1, 2, 3, 0; data_index 15; roll_shift 6 |
| 170 | + round4: h_ordering 0, 1, 2, 3; data_index 14; roll_shift 8 |
| 171 | + round4: h_ordering 3, 0, 1, 2; data_index 5; roll_shift 6 |
| 172 | + round4: h_ordering 2, 3, 0, 1; data_index 6; roll_shift 5 |
| 173 | + round4: h_ordering 1, 2, 3, 0; data_index 2; roll_shift 12; |
| 174 | + |
| 175 | + // Parallel Round 1 |
| 176 | + par_round1: h_ordering 0, 1, 2, 3; data_index 5; roll_shift 8 |
| 177 | + par_round1: h_ordering 3, 0, 1, 2; data_index 14; roll_shift 9 |
| 178 | + par_round1: h_ordering 2, 3, 0, 1; data_index 7; roll_shift 9 |
| 179 | + par_round1: h_ordering 1, 2, 3, 0; data_index 0; roll_shift 11 |
| 180 | + par_round1: h_ordering 0, 1, 2, 3; data_index 9; roll_shift 13 |
| 181 | + par_round1: h_ordering 3, 0, 1, 2; data_index 2; roll_shift 15 |
| 182 | + par_round1: h_ordering 2, 3, 0, 1; data_index 11; roll_shift 15 |
| 183 | + par_round1: h_ordering 1, 2, 3, 0; data_index 4; roll_shift 5 |
| 184 | + par_round1: h_ordering 0, 1, 2, 3; data_index 13; roll_shift 7 |
| 185 | + par_round1: h_ordering 3, 0, 1, 2; data_index 6; roll_shift 7 |
| 186 | + par_round1: h_ordering 2, 3, 0, 1; data_index 15; roll_shift 8 |
| 187 | + par_round1: h_ordering 1, 2, 3, 0; data_index 8; roll_shift 11 |
| 188 | + par_round1: h_ordering 0, 1, 2, 3; data_index 1; roll_shift 14 |
| 189 | + par_round1: h_ordering 3, 0, 1, 2; data_index 10; roll_shift 14 |
| 190 | + par_round1: h_ordering 2, 3, 0, 1; data_index 3; roll_shift 12 |
| 191 | + par_round1: h_ordering 1, 2, 3, 0; data_index 12; roll_shift 6; |
| 192 | + |
| 193 | + // Parallel Round 2 |
| 194 | + par_round2: h_ordering 0, 1, 2, 3; data_index 6; roll_shift 9 |
| 195 | + par_round2: h_ordering 3, 0, 1, 2; data_index 11; roll_shift 13 |
| 196 | + par_round2: h_ordering 2, 3, 0, 1; data_index 3; roll_shift 15 |
| 197 | + par_round2: h_ordering 1, 2, 3, 0; data_index 7; roll_shift 7 |
| 198 | + par_round2: h_ordering 0, 1, 2, 3; data_index 0; roll_shift 12 |
| 199 | + par_round2: h_ordering 3, 0, 1, 2; data_index 13; roll_shift 8 |
| 200 | + par_round2: h_ordering 2, 3, 0, 1; data_index 5; roll_shift 9 |
| 201 | + par_round2: h_ordering 1, 2, 3, 0; data_index 10; roll_shift 11 |
| 202 | + par_round2: h_ordering 0, 1, 2, 3; data_index 14; roll_shift 7 |
| 203 | + par_round2: h_ordering 3, 0, 1, 2; data_index 15; roll_shift 7 |
| 204 | + par_round2: h_ordering 2, 3, 0, 1; data_index 8; roll_shift 12 |
| 205 | + par_round2: h_ordering 1, 2, 3, 0; data_index 12; roll_shift 7 |
| 206 | + par_round2: h_ordering 0, 1, 2, 3; data_index 4; roll_shift 6 |
| 207 | + par_round2: h_ordering 3, 0, 1, 2; data_index 9; roll_shift 15 |
| 208 | + par_round2: h_ordering 2, 3, 0, 1; data_index 1; roll_shift 13 |
| 209 | + par_round2: h_ordering 1, 2, 3, 0; data_index 2; roll_shift 11; |
| 210 | + |
| 211 | + // Parallel Round 3 |
| 212 | + par_round3: h_ordering 0, 1, 2, 3; data_index 15; roll_shift 9 |
| 213 | + par_round3: h_ordering 3, 0, 1, 2; data_index 5; roll_shift 7 |
| 214 | + par_round3: h_ordering 2, 3, 0, 1; data_index 1; roll_shift 15 |
| 215 | + par_round3: h_ordering 1, 2, 3, 0; data_index 3; roll_shift 11 |
| 216 | + par_round3: h_ordering 0, 1, 2, 3; data_index 7; roll_shift 8 |
| 217 | + par_round3: h_ordering 3, 0, 1, 2; data_index 14; roll_shift 6 |
| 218 | + par_round3: h_ordering 2, 3, 0, 1; data_index 6; roll_shift 6 |
| 219 | + par_round3: h_ordering 1, 2, 3, 0; data_index 9; roll_shift 14 |
| 220 | + par_round3: h_ordering 0, 1, 2, 3; data_index 11; roll_shift 12 |
| 221 | + par_round3: h_ordering 3, 0, 1, 2; data_index 8; roll_shift 13 |
| 222 | + par_round3: h_ordering 2, 3, 0, 1; data_index 12; roll_shift 5 |
| 223 | + par_round3: h_ordering 1, 2, 3, 0; data_index 2; roll_shift 14 |
| 224 | + par_round3: h_ordering 0, 1, 2, 3; data_index 10; roll_shift 13 |
| 225 | + par_round3: h_ordering 3, 0, 1, 2; data_index 0; roll_shift 13 |
| 226 | + par_round3: h_ordering 2, 3, 0, 1; data_index 4; roll_shift 7 |
| 227 | + par_round3: h_ordering 1, 2, 3, 0; data_index 13; roll_shift 5; |
| 228 | + |
| 229 | + // Parallel Round 4 |
| 230 | + par_round4: h_ordering 0, 1, 2, 3; data_index 8; roll_shift 15 |
| 231 | + par_round4: h_ordering 3, 0, 1, 2; data_index 6; roll_shift 5 |
| 232 | + par_round4: h_ordering 2, 3, 0, 1; data_index 4; roll_shift 8 |
| 233 | + par_round4: h_ordering 1, 2, 3, 0; data_index 1; roll_shift 11 |
| 234 | + par_round4: h_ordering 0, 1, 2, 3; data_index 3; roll_shift 14 |
| 235 | + par_round4: h_ordering 3, 0, 1, 2; data_index 11; roll_shift 14 |
| 236 | + par_round4: h_ordering 2, 3, 0, 1; data_index 15; roll_shift 6 |
| 237 | + par_round4: h_ordering 1, 2, 3, 0; data_index 0; roll_shift 14 |
| 238 | + par_round4: h_ordering 0, 1, 2, 3; data_index 5; roll_shift 6 |
| 239 | + par_round4: h_ordering 3, 0, 1, 2; data_index 12; roll_shift 9 |
| 240 | + par_round4: h_ordering 2, 3, 0, 1; data_index 2; roll_shift 12 |
| 241 | + par_round4: h_ordering 1, 2, 3, 0; data_index 13; roll_shift 9 |
| 242 | + par_round4: h_ordering 0, 1, 2, 3; data_index 9; roll_shift 12 |
| 243 | + par_round4: h_ordering 3, 0, 1, 2; data_index 7; roll_shift 5 |
| 244 | + par_round4: h_ordering 2, 3, 0, 1; data_index 10; roll_shift 15 |
| 245 | + par_round4: h_ordering 1, 2, 3, 0; data_index 14; roll_shift 8; |
| 246 | + ); |
| 247 | +} |
0 commit comments