1 files changed, 85 insertions, 0 deletions
diff --git a/web/server/h2o/libh2o/deps/picotls/deps/micro-ecc/test/ecc_test/ecc_test.ino b/web/server/h2o/libh2o/deps/picotls/deps/micro-ecc/test/ecc_test/ecc_test.ino
new file mode 100644
index 00000000..c3c8900d
--- /dev/null
+++ b/web/server/h2o/libh2o/deps/picotls/deps/micro-ecc/test/ecc_test/ecc_test.ino
@@ -0,0 +1,85 @@
+#include <uECC.h>
+
+extern "C" {
+
+static int RNG(uint8_t *dest, unsigned size) {
+  // Use the least-significant bits from the ADC for an unconnected pin (or connected to a source of 
+  // random noise). This can take a long time to generate random data if the result of analogRead(0) 
+  // doesn't change very frequently.
+  while (size) {
+    uint8_t val = 0;
+    for (unsigned i = 0; i < 8; ++i) {
+      int init = analogRead(0);
+      int count = 0;
+      while (analogRead(0) == init) {
+        ++count;
+      }
+      
+      if (count == 0) {
+         val = (val << 1) | (init & 0x01);
+      } else {
+         val = (val << 1) | (count & 0x01);
+      }
+    }
+    *dest = val;
+    ++dest;
+    --size;
+  }
+  // NOTE: it would be a good idea to hash the resulting random data using SHA-256 or similar.
+  return 1;
+}
+
+}  // extern "C"
+
+void setup() {
+  Serial.begin(115200);
+  Serial.print("Testing ecc\n");
+  uECC_set_rng(&RNG);
+}
+
+void loop() {
+  const struct uECC_Curve_t * curve = uECC_secp160r1();
+  uint8_t private1[21];
+  uint8_t private2[21];
+  
+  uint8_t public1[40];
+  uint8_t public2[40];
+  
+  uint8_t secret1[20];
+  uint8_t secret2[20];
+  
+  unsigned long a = millis();
+  uECC_make_key(public1, private1, curve);
+  unsigned long b = millis();
+  
+  Serial.print("Made key 1 in "); Serial.println(b-a);
+  a = millis();
+  uECC_make_key(public2, private2, curve);
+  b = millis();
+  Serial.print("Made key 2 in "); Serial.println(b-a);
+
+  a = millis();
+  int r = uECC_shared_secret(public2, private1, secret1, curve);
+  b = millis();
+  Serial.print("Shared secret 1 in "); Serial.println(b-a);
+  if (!r) {
+    Serial.print("shared_secret() failed (1)\n");
+    return;
+  }
+
+  a = millis();
+  r = uECC_shared_secret(public1, private2, secret2, curve);
+  b = millis();
+  Serial.print("Shared secret 2 in "); Serial.println(b-a);
+  if (!r) {
+    Serial.print("shared_secret() failed (2)\n");
+    return;
+  }
+    
+  if (memcmp(secret1, secret2, 20) != 0) {
+    Serial.print("Shared secrets are not identical!\n");
+  } else {
+    Serial.print("Shared secrets are identical\n");
+  }
+}
+