algos_sig: start signature algorithms

src/algos_sig.cpp

@@ -16,8 +16,7 @@
  * along with Codecrypt. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef _ccr_keys_h_
+#include "algos_enc.h"
-#define _ccr_keys_h_
 
-#endif
+#include "fmtseq.h"
 

src/algos_sig.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_sig_algs_h_
+#define _ccr_sig_algs_h_
+
+#include "algorithm.h"
+
+class algo_fmtseq128 : public algorithm
+{
+public:
+	bool provides_signatures() {
+		return true;
+	}
+
+	bool provides_encryption() {
+		return false;
+	}
+
+	std::string get_alg_id() {
+		return "FMTSEQ128-SHA256-SHA256HALF";
+	}
+
+	virtual int sign (const bvector&msg, bvector&sig,
+	                  sencode* privkey, bool&dirty, prng&rng);
+	virtual int verify (const bvector&sig, const bvector&msg,
+	                    sencode* pubkey);
+	int create_keypair (sencode**pub, sencode**priv, prng&rng);
+};
+
+class algo_fmtseq256 : public algorithm
+{
+public:
+	bool provides_signatures() {
+		return true;
+	}
+
+	bool provides_encryption() {
+		return false;
+	}
+
+	std::string get_alg_id() {
+		return "FMTSEQ256-SHA512-SHA256";
+	}
+
+	virtual int sign (const bvector&msg, bvector&sig,
+	                  sencode* privkey, bool&dirty, prng&rng);
+	virtual int verify (const bvector&sig, const bvector&msg,
+	                    sencode* pubkey);
+	int create_keypair (sencode**pub, sencode**priv, prng&rng);
+};
+
+#endif
+

src/keyring.cpp

@@ -18,12 +18,6 @@
 
 #include "keyring.h"
 
-bool keyring::disk_sync()
-{
-
-	return false;
-}
-
 sencode* keyring::get_pubkey (const std::string&key_id)
 {
 
@@ -54,3 +48,40 @@ bool keyring::store_privkey (const std::string&key_id, sencode*)
 
 }
 
+/*
+ * DISK KEYRING STORAGE
+ *
+ * Whole thing is stored in two files just like in GnuPG:
+ *
+ * ~/.ccr/pubkeys
+ * ~/.ccr/private_keyring
+ *
+ * format of the files is raw sencode.
+ *
+ * Public key file is organized as follows:
+ *
+ * (
+ *   "ccr public key storage"
+ *   ( "public-key-id" pubkey_as_embedded_sencode )
+ *   ( "public-key-id" pubkey_as_embedded_sencode )
+ *   ( "public-key-id" pubkey_as_embedded_sencode )
+ *   ...
+ * )
+ *
+ * Private keys are stored together with their pubkeys, so that they don't have
+ * to be generated everytime user asks for them:
+ *
+ * (
+ *   "ccr private keyring"
+ *   ( "public-key-id" privkey pubkey )
+ *   ( "public-key-id" privkey pubkey )
+ *   ( "public-key-id" privkey pubkey )
+ *   ...
+ * )
+ *
+ */
+
+bool keyring::disk_sync()
+{
+	return false;
+}

src/keyring.h

@@ -20,11 +20,17 @@
 #define _ccr_keys_h_
 
 #include <string>
+#include <map>
 
 #include "sencode.h"
 
+/* TODO privkeys are actually keypairs! */
+
 class keyring
 {
+	std::multimap<std::string, sencode*>
+	priv_cache, priv_dirty,
+	            pub_cache, pub_dirty;
 public:
 	bool disk_sync();