code: plan9front

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sys/src/libventi: implement vtsha1 and vtsha1check functions

--- a/sys/include/venti.h

+++ b/sys/include/venti.h

@@ -380,6 +380,10 @@

 int	vtsync(VtConn*);

 int	vtping(VtConn*);

+/* sha1 */

+void	vtsha1(uchar score[VtScoreSize], uchar*, int);

+int	vtsha1check(uchar score[VtScoreSize], uchar*, int);

+

 /*

  * Data blocks and block cache.

  */

--- a/sys/src/libventi/mkfile

+++ b/sys/src/libventi/mkfile

@@ -24,6 +24,7 @@

 	scorefmt.$O\

 	send.$O\

 	server.$O\

+	sha1.$O\

 	srvhello.$O\

 	strdup.$O\

 	string.$O\

--- /dev/null

+++ b/sys/src/libventi/sha1.c

@@ -1,0 +1,28 @@

+#include <u.h>

+#include <libc.h>

+#include <venti.h>

+#include <libsec.h>

+

+void

+vtsha1(uchar score[VtScoreSize], uchar *p, int n)

+{

+	DigestState ds;

+

+	memset(&ds, 0, sizeof ds);

+	sha1(p, n, score, &ds);

+}

+

+int

+vtsha1check(uchar score[VtScoreSize], uchar *p, int n)

+{

+	DigestState ds;

+	uchar score2[VtScoreSize];

+

+	memset(&ds, 0, sizeof ds);

+	sha1(p, n, score2, &ds);

+	if(memcmp(score, score2, VtScoreSize) != 0) {

+		werrstr("vtsha1check failed");

+		return -1;

+	}

+	return 0;

+}