diff --git a/src/main.cpp b/src/main.cpp
index 12543c9..9c98f6c 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -7,6 +7,40 @@
 #include <iostream>
 using namespace std;
 
+ostream& operator<<(ostream&o, ccr::polynomial p)
+{
+	o << "polynomial degree " << p.degree() << ':' << endl;
+	for(int i=0,e=p.degree();i<=e;++i) o << p[i] << ' ';
+	o << endl;
+	return o;
+}
+
+ostream& operator<<(ostream&o, ccr::permutation p)
+{
+	o << "permutation over " << p.size() << " elements:" << endl;
+	for(uint i=0;i<p.size();++i) o << p[i] << ' ';
+	o << endl;
+	return o;
+}
+
+ostream& operator<<(ostream&o, ccr::gf2m f)
+{
+	o << "GF(2^"<<f.m<<") of "<<f.n<<" elements, modulus "<<f.poly << endl;
+	return o;
+}
+
+ostream& operator<<(ostream&o, ccr::matrix m)
+{
+	uint i,j,h,w;
+	h=m.height();w=m.width();
+	o << "binary "<<h<<"x"<<w<<" matrix:" << endl;
+	for(i=0;i<h;++i) {
+		for(j=0;j<w;++j) o << m[j][i];
+		o << endl;
+	}
+	return o;
+}
+
 class primitiverng : public ccr::prng
 {
 public:
@@ -21,13 +55,22 @@ public:
 
 int main()
 {
-	uint i, j;
 	primitiverng r;
 	r.seed (0);
 
 	ccr::mce::privkey priv;
 	ccr::mce::pubkey pub;
-	ccr::mce::generate (pub, priv, r, 8, 4);
+	ccr::mce::generate (pub, priv, r, 9, 15);
+
+	cout << "PRIVATE KEY" << endl;
+	cout << priv.fld;
+	cout << priv.hperm;
+	cout << priv.Pinv;
+	cout << priv.Sinv;
+	cout << priv.g;
+	cout << "PUBLIC KEY" << endl;
+	cout << pub.t << endl;
+	cout << pub.G;
 
 	return 0;
 }