diff -up ntp-4.2.6p5/util/ntp-keygen.c.bigkeygen ntp-4.2.6p5/util/ntp-keygen.c

--- ntp-4.2.6p5/util/ntp-keygen.c.bigkeygen	2015-04-14 09:47:54.205534510 +0200

+++ ntp-4.2.6p5/util/ntp-keygen.c	2015-04-14 09:50:04.068927862 +0200

@@ -742,24 +742,23 @@ gen_md5(

 	ntp_srandom((u_long)epoch);

 	for (i = 1; i <= MD5KEYS; i++) {

 		for (j = 0; j < MD5SIZE; j++) {

-			int temp;

+			u_char temp;

 			while (1) {

 				int rc;

-				rc = ntp_crypto_random_buf(&temp, 1);

+				rc = ntp_crypto_random_buf(&temp, sizeof(temp));

 				if (-1 == rc) {

 					fprintf(stderr, "ntp_crypto_random_buf() failed.\n");

 					exit (-1);

 				}

-				temp &= 0xff;

 				if (temp == '#')

 					continue;

 				if (temp > 0x20 && temp < 0x7f)

 					break;

 			}

-			md5key[j] = (u_char)temp;

+			md5key[j] = temp;

 		}

 		md5key[j] = '\0';

 		fprintf(str, "%2d MD5 %s  # MD5 key\n", i,