5 /* RC4-based pseudo-random state. */
7 static uint8_t s_i, s_j;
11 swap_byte (uint8_t *a, uint8_t *b)
19 random_init (unsigned seed)
21 uint8_t *seedp = (uint8_t *) &seed;
28 for (i = 0; i < 256; i++)
30 for (i = j = 0; i < 256; i++)
32 j += s[i] + seedp[i % sizeof seed];
33 swap_byte (s + i, s + j);
41 random_bytes (void *buf_, size_t size)
46 for (buf = buf_; size-- > 0; buf++)
52 swap_byte (s + s_i, s + s_j);
54 s_k = s[s_i] + s[s_j];
59 /* Returns a pseudo-random unsigned long. */
64 random_bytes (&ul, sizeof ul);