diff options
Diffstat (limited to 'cipher/rndunix.c')
| -rw-r--r-- | cipher/rndunix.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/cipher/rndunix.c b/cipher/rndunix.c index f0b631975..716b02672 100644 --- a/cipher/rndunix.c +++ b/cipher/rndunix.c @@ -709,6 +709,7 @@ gather_random( void (*add)(const void*, size_t, int), int requester, /* now read from the gatherer */ while( length ) { int goodness; + ulong subtract; if( read_a_msg( pipedes[0], &msg ) ) { g10_log_error("reading from gatherer pipe failed: %s\n", @@ -742,7 +743,9 @@ gather_random( void (*add)(const void*, size_t, int), int requester, (*add)( msg.data, n, requester ); /* this is the trick how e cope with the goodness */ - length -= (ulong)n * goodness / 100; + subtract = (ulong)n * goodness / 100; + /* subtract at least 1 byte to avoid infinite loops */ + length -= subtract ? subtract : 1; } return 0; |