diff options
Diffstat (limited to 'src/lib')
| -rw-r--r-- | src/lib/crypto/prng.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/src/lib/crypto/prng.c b/src/lib/crypto/prng.c index 95d5868b72..e1e34a2c3f 100644 --- a/src/lib/crypto/prng.c +++ b/src/lib/crypto/prng.c @@ -161,7 +161,7 @@ read_entropy_from_device (krb5_context context, const char *device) krb5_data data; struct stat sb; int fd; - unsigned char buf[YARROW_SLOW_THRESH/8]; + unsigned char buf[YARROW_SLOW_THRESH/8], *bp; int left; fd = open (device, O_RDONLY); if (fd == -1) @@ -172,14 +172,16 @@ read_entropy_from_device (krb5_context context, const char *device) close(fd); return 0; } - for (left = sizeof (buf); left > 0;) { + + for (bp = &buf, left = sizeof (buf); left > 0;) { ssize_t count; - count = read (fd, &buf, (unsigned) left); + count = read (fd, bp, (unsigned) left); if (count <= 0) { close(fd); return 0; } left -= count; + bp += count; } close (fd); data.length = sizeof (buf); @@ -198,7 +200,7 @@ krb5_c_random_os_entropy (krb5_context context, int unused; int *oursuccess = success?success:&unused; *oursuccess = 0; - /* If we are getting strong data then try that first. We aare + /* If we are getting strong data then try that first. We are guaranteed to cause a reseed of some kind if strong is true and we have both /dev/random and /dev/urandom. We want the strong data included in the reseed so we get it first.*/ |