| 11 | static bool pseudorand_initted = false; |
| 12 | |
| 13 | static void init_if_needed(void) |
| 14 | { |
| 15 | if (unlikely(!pseudorand_initted)) { |
| 16 | unsigned char seedbuf[16]; |
| 17 | struct sha256 sha; |
| 18 | |
| 19 | randbytes(seedbuf, sizeof(seedbuf)); |
| 20 | memcpy(&siphashseed, seedbuf, sizeof(siphashseed)); |
| 21 | |
| 22 | /* In case isaac is reversible, don't leak seed. */ |
| 23 | sha256(&sha, seedbuf, sizeof(seedbuf)); |
| 24 | isaac64_init(&isaac64, sha.u.u8, sizeof(sha.u.u8)); |
| 25 | pseudorand_initted = true; |
| 26 | } |
| 27 | } |
| 28 | |
| 29 | uint64_t pseudorand_(uint64_t max, uint64_t *offset) |
| 30 | { |
no test coverage detected