diff --git a/src/algorithm.h b/src/algorithm.h
index ae0dc89..96e3a06 100644
--- a/src/algorithm.h
+++ b/src/algorithm.h
@@ -45,19 +45,28 @@ public:
 	 * plaintext/ciphertext/message lengths, usually padding them somehow.
 	 */
 	virtual int encrypt (const bvector&plain, bvector&cipher,
-	                     sencode* pubkey, prng&rng) = 0;
+	                     sencode* pubkey, prng&rng) {
+		return -1;
+	}
 
 	virtual int decrypt (const bvector&cipher, bvector&plain,
-	                     sencode* privkey) = 0;
+	                     sencode* privkey) {
+		return -1;
+	}
 
 	virtual int sign (const bvector&msg, bvector&sig,
-	                  sencode* privkey, bool&dirty,
-	                  prng&rng) = 0;
+	                  sencode* privkey, bool&dirty, prng&rng) {
+		return -1;
+	}
 
 	virtual int verify (const bvector&sig, const bvector&msg,
-	                    sencode* pubkey) = 0;
+	                    sencode* pubkey) {
+		return -1;
+	}
 
-	virtual int create_keypair (sencode**pub, sencode**priv, prng&rng) = 0;
+	virtual int create_keypair (sencode**pub, sencode**priv, prng&rng) {
+		return -1;
+	}
 };
 
 #endif
diff --git a/src/algos_enc.cpp b/src/algos_enc.cpp
new file mode 100644
index 0000000..ff62211
--- /dev/null
+++ b/src/algos_enc.cpp
@@ -0,0 +1,49 @@
+
+/*
+ * This file is part of Codecrypt.
+ *
+ * Codecrypt is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Codecrypt is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Codecrypt. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "algos_enc.h"
+
+#include "mce_qd.h"
+
+int algo_mceqd128::create_keypair (sencode**pub, sencode**priv, prng&rng)
+{
+	mce_qd::pubkey Pub;
+	mce_qd::privkey Priv;
+
+	if (mce_qd::generate (Pub, Priv, rng, 16, 7, 32, 4) )
+		return 1;
+
+	*pub = Pub.serialize();
+	*priv = Priv.serialize();
+	return 0;
+}
+
+int algo_mceqd256::create_keypair (sencode**pub, sencode**priv, prng&rng)
+{
+	mce_qd::pubkey Pub;
+	mce_qd::privkey Priv;
+
+	if (mce_qd::generate (Pub, Priv, rng, 16, 8, 32, 4) )
+		return 1;
+
+	*pub = Pub.serialize();
+	*priv = Priv.serialize();
+	return 0;
+}
+
+
diff --git a/src/algos_enc.h b/src/algos_enc.h
new file mode 100644
index 0000000..d1a49cb
--- /dev/null
+++ b/src/algos_enc.h
@@ -0,0 +1,69 @@
+
+/*
+ * This file is part of Codecrypt.
+ *
+ * Codecrypt is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * Codecrypt is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Codecrypt. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _ccr_enc_algs_h_
+#define _ccr_enc_algs_h_
+
+#include "algorithm.h"
+
+class algo_mceqd128 : public algorithm
+{
+public:
+	bool provides_signatures() {
+		return false;
+	}
+
+	bool provides_encryption() {
+		return true;
+	}
+
+	std::string get_alg_id() {
+		return "MCEQD128FO-SHA256-ARCFOUR";
+	}
+
+	int encrypt (const bvector&plain, bvector&cipher,
+	             sencode* pubkey, prng&rng);
+	int decrypt (const bvector&cipher, bvector&plain,
+	             sencode* privkey);
+	int create_keypair (sencode**pub, sencode**priv, prng&rng);
+};
+
+class algo_mceqd256 : public algorithm
+{
+public:
+	bool provides_signatures() {
+		return false;
+	}
+
+	bool provides_encryption() {
+		return true;
+	}
+
+	std::string get_alg_id() {
+		return "MCEQD256FO-SHA256-ARCFOUR";
+	}
+
+	int encrypt (const bvector&plain, bvector&cipher,
+	             sencode* pubkey, prng&rng);
+	int decrypt (const bvector&cipher, bvector&plain,
+	             sencode* privkey);
+	int create_keypair (sencode**pub, sencode**priv, prng&rng);
+};
+
+#endif
+