| 102 | } |
| 103 | |
| 104 | static void multiply_gf32(uint8_t *x, uint8_t y) |
| 105 | { |
| 106 | if (*x == 0 || y == 0) { |
| 107 | *x = 0; |
| 108 | } else { |
| 109 | *x = log_inv[(logi[*x] + logi[y]) % 31]; |
| 110 | } |
| 111 | return; |
| 112 | } |
| 113 | |
| 114 | /* Helper to input a single field element in the checksum engine. */ |
| 115 | static void input_fe(const u8 *generator, u8 *residue, uint8_t e, size_t len) |