Nist P-384 guts and glory

node/ECC384.hpp

@@ -0,0 +1,74 @@
+/*
+ * ZeroTier One - Network Virtualization Everywhere
+ * Copyright (C) 2011-2019  ZeroTier, Inc.  https://www.zerotier.com/
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --
+ *
+ * You can be released from the requirements of the license by purchasing
+ * a commercial license. Buying such a license is mandatory as soon as you
+ * develop commercial closed-source software that incorporates or links
+ * directly against ZeroTier software without disclosing the source code
+ * of your own application.
+ */
+
+// This is glue code to ease the use of the NIST P-384 elliptic curve.
+
+// Note that some of the code inside ECC384.cpp is third party code and
+// is under the BSD 2-clause license rather than ZeroTier's license.
+
+#ifndef ZT_ECC384_HPP
+#define ZT_ECC384_HPP
+
+#include "Constants.hpp"
+
+/**
+ * Size of a (point compressed) P-384 public key
+ */
+#define ZT_ECC384_PUBLIC_KEY_SIZE 49
+
+/**
+ * Size of a P-384 private key
+ */
+#define ZT_ECC384_PRIVATE_KEY_SIZE 48
+
+/**
+ * Size of the hash that should be signed using P-384
+ */
+#define ZT_ECC384_SIGNATURE_HASH_SIZE 48
+
+/**
+ * Size of a P-384 signature
+ */
+#define ZT_ECC384_SIGNATURE_SIZE 96
+
+/**
+ * Size of shared secret generated by ECDH key agreement
+ */
+#define ZT_ECC384_SHARED_SECRET_SIZE 48
+
+namespace ZeroTier {
+
+void ECC384GenerateKey(uint8_t pub[ZT_ECC384_PUBLIC_KEY_SIZE],uint8_t priv[ZT_ECC384_PRIVATE_KEY_SIZE]);
+
+void ECC384ECDSASign(const uint8_t priv[ZT_ECC384_PRIVATE_KEY_SIZE],const uint8_t hash[ZT_ECC384_SIGNATURE_HASH_SIZE],uint8_t sig[ZT_ECC384_SIGNATURE_SIZE]);
+
+bool ECC384ECDSAVerify(const uint8_t pub[ZT_ECC384_PUBLIC_KEY_SIZE],const uint8_t hash[ZT_ECC384_SIGNATURE_HASH_SIZE],const uint8_t sig[ZT_ECC384_SIGNATURE_SIZE]);
+
+bool ECC384ECDH(const uint8_t theirPub[ZT_ECC384_PUBLIC_KEY_SIZE],const uint8_t ourPriv[ZT_ECC384_PRIVATE_KEY_SIZE],uint8_t secret[ZT_ECC384_SHARED_SECRET_SIZE]);
+
+} // namespace ZeroTier
+
+#endif