1 files changed, 51 insertions, 0 deletions
diff --git a/usr.bin/tcfs/gentcfskey.c b/usr.bin/tcfs/gentcfskey.c
new file mode 100644
index 00000000000..ffc45b9f3c7
--- /dev/null
+++ b/usr.bin/tcfs/gentcfskey.c
@@ -0,0 +1,51 @@
+/*
+ *	Transparent Cryptographic File System (TCFS) for NetBSD 
+ *	Author and mantainer: 	Luigi Catuogno [luicat@tcfs.unisa.it]
+ *	
+ *	references:		http://tcfs.dia.unisa.it
+ *				tcfs-bsd@tcfs.unisa.it
+ */
+
+/*
+ *	Base utility set v0.1
+ */
+
+#include <stdio.h>
+#include <sys/time.h>
+#include <termios.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <err.h>
+#include <md5.h>
+
+#include <miscfs/tcfs/tcfs.h>
+#include "tcfsdefines.h"
+
+u_char *
+gentcfskey (void)
+{
+	u_char *buff;
+	MD5_CTX ctx, ctx2;
+	u_int32_t tmp[KEYSIZE];
+	u_char digest[16];
+	int i;
+	
+	buff = (u_char *)calloc(KEYSIZE + 1, sizeof(char));
+
+	/* Generate random key */
+	for (i = 0; i < KEYSIZE; i ++)
+		tmp[i] = arc4random();
+
+	MD5Init(&ctx);
+	for (i = 0; i < KEYSIZE; i += 16) {
+		MD5Update(&ctx, (u_char *)tmp, sizeof(tmp));
+		ctx2 = ctx;
+		MD5Final(digest, &ctx2);
+		memcpy(buff + i, digest, KEYSIZE - i > 16 ? 16 : KEYSIZE - i);
+	}
+	buff[KEYSIZE] = '\0';
+	memset(&ctx, 0, sizeof(ctx));
+
+	return (buff);
+}