1 files changed, 33 insertions, 0 deletions
diff --git a/src/libauthsrv/passtokey.c b/src/libauthsrv/passtokey.c
new file mode 100644
index 00000000..8e267ce4
--- /dev/null
+++ b/src/libauthsrv/passtokey.c
@@ -0,0 +1,33 @@
+#include <u.h>
+#include <libc.h>
+#include <authsrv.h>
+
+int
+passtokey(char *key, char *p)
+{
+	uchar buf[ANAMELEN], *t;
+	int i, n;
+
+	n = strlen(p);
+	if(n >= ANAMELEN)
+		n = ANAMELEN-1;
+	memset(buf, ' ', 8);
+	t = buf;
+	strncpy((char*)t, p, n);
+	t[n] = 0;
+	memset(key, 0, DESKEYLEN);
+	for(;;){
+		for(i = 0; i < DESKEYLEN; i++)
+			key[i] = (t[i] >> i) + (t[i+1] << (8 - (i+1)));
+		if(n <= 8)
+			return 1;
+		n -= 8;
+		t += 8;
+		if(n < 8){
+			t -= 8 - n;
+			n = 8;
+		}
+		encrypt(key, t, 8);
+	}
+	return 1;	/* not reached */
+}