1 files changed, 48 insertions, 0 deletions
diff --git a/src/cmd/auth/dsa2ssh.c b/src/cmd/auth/dsa2ssh.c
new file mode 100644
index 00000000..489f2d21
--- /dev/null
+++ b/src/cmd/auth/dsa2ssh.c
@@ -0,0 +1,48 @@
+#include <u.h>
+#include <libc.h>
+#include <auth.h>
+#include <mp.h>
+#include <libsec.h>
+#include "rsa2any.h"
+
+void
+usage(void)
+{
+	fprint(2, "usage: auth/dsa2ssh [-c comment] [file]\n");
+	exits("usage");
+}
+
+void
+main(int argc, char **argv)
+{
+	DSApriv *k;
+	char *comment;
+	uchar buf[8192], *p;
+	
+	fmtinstall('B', mpfmt);
+	fmtinstall('[', encodefmt);
+	comment = "";
+	ARGBEGIN{
+	case 'c':
+		comment = EARGF(usage());
+		break;
+	default:
+		usage();
+	}ARGEND
+
+	if(argc > 1)
+		usage();
+
+	if((k = getdsakey(argc, argv, 0, nil)) == nil)
+		sysfatal("%r");
+
+	p = buf;
+	p = put4(p, 7);
+	p = putn(p, "ssh-dss", 7);
+	p = putmp2(p, k->pub.p);
+	p = putmp2(p, k->pub.q);
+	p = putmp2(p, k->pub.alpha);
+	p = putmp2(p, k->pub.key);
+	print("ssh-dss %.*[ %s\n", p-buf, buf, comment);
+	exits(nil);
+}