1 files changed, 50 insertions, 0 deletions
diff --git a/src/cmd/auth/dsagen.c b/src/cmd/auth/dsagen.c
new file mode 100644
index 00000000..5fa9f99a
--- /dev/null
+++ b/src/cmd/auth/dsagen.c
@@ -0,0 +1,50 @@
+#include <u.h>
+#include <libc.h>
+#include <mp.h>
+#include <libsec.h>
+
+void
+usage(void)
+{
+	fprint(2, "usage: auth/dsagen [-t 'attr=value attr=value ...']\n");
+	exits("usage");
+}
+
+void
+main(int argc, char **argv)
+{
+	char *s;
+	int bits;
+	char *tag;
+	DSApriv *key;
+
+	bits = 1024;
+	tag = nil;
+	key = nil;
+	fmtinstall('B', mpfmt);
+
+	ARGBEGIN{
+	case 't':
+		tag = EARGF(usage());
+		break;
+	default:
+		usage();
+	}ARGEND
+
+	if(argc != 0)
+		usage();
+
+	key = dsagen(nil);
+
+	s = smprint("key proto=dsa %s%sp=%B q=%B alpha=%B key=%B !secret=%B\n",
+		tag ? tag : "", tag ? " " : "",
+		key->pub.p, key->pub.q, key->pub.alpha, key->pub.key,
+		key->secret);
+	if(s == nil)
+		sysfatal("smprint: %r");
+
+	if(write(1, s, strlen(s)) != strlen(s))
+		sysfatal("write: %r");
+	
+	exits(nil);
+}