MFC r300322, 300340:

ed(1): Cleanups for the DES mode.

- Use arc4random_buf(3).
- Prevent a segmentation fault when ed receives a signal
  while being in getpass(). [1]

Obtained from:	OpenBSD [1] (CVS Rev. 1.15)

1 files changed, 2 insertions, 5 deletions

diff --git a/bin/ed/cbc.c b/bin/ed/cbc.c
index 3985721..b59778b 100644
--- a/bin/ed/cbc.c
+++ b/bin/ed/cbc.c
@@ -90,16 +90,13 @@ void
 init_des_cipher(void)
 {
 #ifdef DES
-	int i;
-
 	des_ct = des_n = 0;
 
 	/* initialize the initialization vector */
 	MEMZERO(ivec, 8);
 
 	/* initialize the padding vector */
-	for (i = 0; i < 8; i++)
-		pvec[i] = (char) (arc4random() % 256);
+	arc4random_buf(pvec, sizeof(pvec));
 #endif
 }
 
@@ -164,7 +161,7 @@ get_keyword(void)
 	/*
 	 * get the key
 	 */
-	if (*(p = getpass("Enter key: "))) {
+	if ((p = getpass("Enter key: ")) != NULL && *p != '\0') {
 
 		/*
 		 * copy it, nul-padded, into the key area