Initial commit

src/Identity.cpp

@@ -0,0 +1,70 @@
+#include "Identity.h"
+#include <string.h>
+#define ED25519_NO_SEED  1
+#include <ed_25519.h>
+
+namespace mesh {
+
+Identity::Identity() {
+  memset(pub_key, 0, sizeof(pub_key));
+}
+
+Identity::Identity(const char* pub_hex) {
+  Utils::fromHex(pub_key, PUB_KEY_SIZE, pub_hex);
+}
+
+bool Identity::verify(const uint8_t* sig, const uint8_t* message, int msg_len) const {
+  return ed25519_verify(sig, message, msg_len, pub_key);
+}
+
+bool Identity::readFrom(Stream& s) {
+  return (s.readBytes(pub_key, PUB_KEY_SIZE) == PUB_KEY_SIZE);
+}
+
+bool Identity::writeTo(Stream& s) const {
+  return (s.write(pub_key, PUB_KEY_SIZE) == PUB_KEY_SIZE);
+}
+
+void Identity::printTo(Stream& s) const {
+  Utils::printHex(s, pub_key, PUB_KEY_SIZE);
+}
+
+LocalIdentity::LocalIdentity() {
+  memset(prv_key, 0, sizeof(prv_key));
+}
+LocalIdentity::LocalIdentity(const char* prv_hex, const char* pub_hex) : Identity(pub_hex) {
+  Utils::fromHex(prv_key, PRV_KEY_SIZE, prv_hex);
+}
+
+LocalIdentity::LocalIdentity(RNG* rng) {
+  uint8_t seed[SEED_SIZE];
+  rng->random(seed, SEED_SIZE);
+  ed25519_create_keypair(pub_key, prv_key, seed);
+}
+
+bool LocalIdentity::readFrom(Stream& s) {
+  bool success = (s.readBytes(pub_key, PUB_KEY_SIZE) == PUB_KEY_SIZE);
+  success = success && (s.readBytes(prv_key, PRV_KEY_SIZE) == PRV_KEY_SIZE);
+  return success;
+}
+
+bool LocalIdentity::writeTo(Stream& s) const {
+  bool success = (s.write(pub_key, PUB_KEY_SIZE) == PUB_KEY_SIZE);
+  success = success && (s.write(prv_key, PRV_KEY_SIZE) == PRV_KEY_SIZE);
+  return success;
+}
+
+void LocalIdentity::printTo(Stream& s) const {
+  s.print("pub_key: "); Utils::printHex(s, pub_key, PUB_KEY_SIZE); s.println();
+  s.print("prv_key: "); Utils::printHex(s, prv_key, PRV_KEY_SIZE); s.println();
+}
+
+void LocalIdentity::sign(uint8_t* sig, const uint8_t* message, int msg_len) const {
+  ed25519_sign(sig, message, msg_len, pub_key, prv_key);
+}
+
+void LocalIdentity::calcSharedSecret(uint8_t* secret, const Identity& other) {
+  ed25519_key_exchange(secret, other.pub_key, prv_key);
+}
+
+}