rename buffer to digest, more clear. ok deraadt

diff --git a/sys/dev/rnd.c b/sys/dev/rnd.c
index 4ceb97f..48f2c41 100644 (file)
--- a/sys/dev/rnd.c
+++ b/sys/dev/rnd.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: rnd.c,v 1.165 2014/12/19 02:29:40 tedu Exp $  */
+/*     $OpenBSD: rnd.c,v 1.166 2014/12/19 04:00:00 tedu Exp $  */
 
 /*
  * Copyright (c) 2011 Theo de Raadt.
@@ -497,7 +497,7 @@ void
 extract_entropy(u_int8_t *buf)
 {
        static u_int32_t extract_pool[POOLWORDS];
-       u_char buffer[SHA512_DIGEST_LENGTH];
+       u_char digest[SHA512_DIGEST_LENGTH];
        SHA2_CTX tmp;
 
 #if SHA512_DIGEST_LENGTH < EBUFSIZE
@@ -510,16 +510,15 @@ extract_entropy(u_int8_t *buf)
         * SHA512Update() would create nasty data dependencies.  We
         * do not rely on this as a benefit, but if it happens, cool.
         */
-       memcpy(extract_pool, entropy_pool,
-           sizeof(extract_pool));
+       memcpy(extract_pool, entropy_pool, sizeof(extract_pool));
 
        /* Hash the pool to get the output */
        SHA512Init(&tmp);
        SHA512Update(&tmp, (u_int8_t *)extract_pool, sizeof(extract_pool));
-       SHA512Final(buffer, &tmp);
+       SHA512Final(digest, &tmp);
 
        /* Copy data to destination buffer */
-       memcpy(buf, buffer, EBUFSIZE);
+       memcpy(buf, digest, EBUFSIZE);
 
        /* Modify pool so next hash will produce different results */
        add_timer_randomness(EBUFSIZE);
@@ -528,7 +527,7 @@ extract_entropy(u_int8_t *buf)
        /* Wipe data from memory */
        explicit_bzero(extract_pool, sizeof(extract_pool));
        explicit_bzero(&tmp, sizeof(tmp));
-       explicit_bzero(buffer, sizeof(buffer));
+       explicit_bzero(digest, sizeof(digest));
 }
 
 /* random keystream by ChaCha */