-#include "bsd-misc.h"
-#include "entropy.h"
-
-#ifndef HAVE_ARC4RANDOM
-
-typedef struct
-{
- unsigned int s[256];
- int i;
- int j;
-} rc4_t;
-
-void rc4_key(rc4_t *r, unsigned char *key, int len);
-void rc4_getbytes(rc4_t *r, unsigned char *buffer, int len);
-
-static rc4_t *rc4 = NULL;
-
-void rc4_key(rc4_t *r, unsigned char *key, int len)
-{
- int t;
-
- for(r->i = 0; r->i < 256; r->i++)
- r->s[r->i] = r->i;
-
- r->j = 0;
- for(r->i = 0; r->i < 256; r->i++)
- {
- r->j = (r->j + r->s[r->i] + key[r->i % len]) % 256;
- t = r->s[r->i];
- r->s[r->i] = r->s[r->j];
- r->s[r->j] = t;
- }
- r->i = r->j = 0;
-}
-
-void rc4_getbytes(rc4_t *r, unsigned char *buffer, int len)
-{
- int t;
- int c;
-
- c = 0;
- while(c < len)
- {
- r->i = (r->i + 1) % 256;
- r->j = (r->j + r->s[r->i]) % 256;
- t = r->s[r->i];
- r->s[r->i] = r->s[r->j];
- r->s[r->j] = t;
-
- t = (r->s[r->i] + r->s[r->j]) % 256;
-
- buffer[c] = r->s[t];
- c++;
- }
-}
-
-unsigned int arc4random(void)
-{
- unsigned int r;
-
- if (rc4 == NULL)
- arc4random_stir();
-
- rc4_getbytes(rc4, (unsigned char *)&r, sizeof(r));
-
- return(r);
-}
-
-void arc4random_stir(void)
-{
- unsigned char rand_buf[32];
-
- if (rc4 == NULL)
- rc4 = xmalloc(sizeof(*rc4));
-
- seed_rng();
- RAND_bytes(rand_buf, sizeof(rand_buf));
-
- rc4_key(rc4, rand_buf, sizeof(rand_buf));
- memset(rand_buf, 0, sizeof(rand_buf));
-}
-#endif /* !HAVE_ARC4RANDOM */
-
-#ifndef HAVE_SETPROCTITLE
-void setproctitle(const char *fmt, ...)
-{
- /* FIXME */
-}
-#endif /* !HAVE_SETPROCTITLE */