M .gitignore → .gitignore

@@ -52,7 +52,7 @@ Module.symvers
 Mkfile.old
 dkms.conf
 
-test-main
 .cache/
 compile_commands.json
-build/+build/
+.vscode/

M test.c → test.c

@@ -6,25 +6,28 @@ int
 main (int argc, char **argv)
 {
   const uint8_t SCALAR[]
-      = { 0xa5, 0x46, 0xe3, 0x6b, 0xf0, 0x52, 0x7c, 0x9d, 0x3b, 0x16, 0x15,
-          0x4b, 0x82, 0x46, 0x5e, 0xdd, 0x62, 0x14, 0x4c, 0x0a, 0xc1, 0xfc,
-          0x5a, 0x18, 0x50, 0x6a, 0x22, 0x44, 0xba, 0x44, 0x9a, 0xc4 };
+      = { 0x4b, 0x66, 0xe9, 0xd4, 0xd1, 0xb4, 0x67, 0x3c, 0x5a, 0xd2, 0x26,
+          0x91, 0x95, 0x7d, 0x6a, 0xf5, 0xc1, 0x1b, 0x64, 0x21, 0xe0, 0xea,
+          0x01, 0xd4, 0x2c, 0xa4, 0x16, 0x9e, 0x79, 0x18, 0xba, 0x0d };
   const uint8_t U[]
-      = { 0xe6, 0xdb, 0x68, 0x67, 0x58, 0x30, 0x30, 0xdb, 0x35, 0x94, 0xc1,
-          0xa4, 0x24, 0xb1, 0x5f, 0x7c, 0x72, 0x66, 0x24, 0xec, 0x26, 0xb3,
-          0x35, 0x3b, 0x10, 0xa9, 0x03, 0xa6, 0xd0, 0xab, 0x1c, 0x4c };
+      = { 0xe5, 0x21, 0x0f, 0x12, 0x78, 0x68, 0x11, 0xd3, 0xf4, 0xb7, 0x95,
+          0x9d, 0x05, 0x38, 0xae, 0x2c, 0x31, 0xdb, 0xe7, 0x10, 0x6f, 0xc0,
+          0x3c, 0x3e, 0xfc, 0x4c, 0xd5, 0x49, 0xc7, 0x15, 0xa4, 0x93 };
   const uint8_t EXPECTED[]
-      = { 0xc3, 0xda, 0x55, 0x37, 0x9d, 0xe9, 0xc6, 0x90, 0x8e, 0x94, 0xea,
-          0x4d, 0xf2, 0x8d, 0x08, 0x4f, 0x32, 0xec, 0xcf, 0x03, 0x49, 0x1c,
-          0x71, 0xf7, 0x54, 0xb4, 0x07, 0x55, 0x77, 0xa2, 0x85, 0x52 };
+      = { 0x95, 0xcb, 0xde, 0x94, 0x76, 0xe8, 0x90, 0x7d, 0x7a, 0xad, 0xe4,
+          0x5c, 0xb4, 0xb8, 0x73, 0xf8, 0x8b, 0x59, 0x5a, 0x68, 0x79, 0x9f,
+          0xa1, 0x52, 0xe6, 0xf8, 0xf7, 0x64, 0x7a, 0xac, 0x79, 0x57 };
   uint8_t actual[sizeof (EXPECTED)];
-  for (unsigned int i = 0; i < 100000; ++i)
+  tct_x25519 (SCALAR, U, actual);
+  for (unsigned int i = 0; i < sizeof (actual); ++i)
     {
-      tct_x25519 (SCALAR, U, actual);
+      printf ("%02x", actual[i]);
     }
+  printf ("\n");
+
   for (unsigned int i = 0; i < sizeof (actual); ++i)
     {
-      printf ("0x%02x, ", actual[i]);
+      printf ("%02x", EXPECTED[i]);
     }
   printf ("\n");
   return 0;

M tests/src/x25519/all.cpp → tests/src/x25519/all.cpp

@@ -23,4 +23,23 @@ 0x71, 0xf7, 0x54, 0xb4, 0x07, 0x55, 0x77, 0xa2, 0x85, 0x52 };
   uint8_t actual[sizeof (EXPECTED)];
   tct_x25519 (SCALAR, U, actual);
   EXPECT_EQ (memcmp (actual, EXPECTED, sizeof (EXPECTED)), 0);
+}
+
+TEST (X25519, x25519_scalarmult_1)
+{
+  const uint8_t SCALAR[]
+      = { 0x4b, 0x66, 0xe9, 0xd4, 0xd1, 0xb4, 0x67, 0x3c, 0x5a, 0xd2, 0x26,
+          0x91, 0x95, 0x7d, 0x6a, 0xf5, 0xc1, 0x1b, 0x64, 0x21, 0xe0, 0xea,
+          0x01, 0xd4, 0x2c, 0xa4, 0x16, 0x9e, 0x79, 0x18, 0xba, 0x0d };
+  const uint8_t U[]
+      = { 0xe5, 0x21, 0x0f, 0x12, 0x78, 0x68, 0x11, 0xd3, 0xf4, 0xb7, 0x95,
+          0x9d, 0x05, 0x38, 0xae, 0x2c, 0x31, 0xdb, 0xe7, 0x10, 0x6f, 0xc0,
+          0x3c, 0x3e, 0xfc, 0x4c, 0xd5, 0x49, 0xc7, 0x15, 0xa4, 0x93 };
+  const uint8_t EXPECTED[]
+      = { 0x95, 0xcb, 0xde, 0x94, 0x76, 0xe8, 0x90, 0x7d, 0x7a, 0xad, 0xe4,
+          0x5c, 0xb4, 0xb8, 0x73, 0xf8, 0x8b, 0x59, 0x5a, 0x68, 0x79, 0x9f,
+          0xa1, 0x52, 0xe6, 0xf8, 0xf7, 0x64, 0x7a, 0xac, 0x79, 0x57 };
+  uint8_t actual[sizeof (EXPECTED)];
+  tct_x25519 (SCALAR, U, actual);
+  EXPECT_EQ (memcmp (actual, EXPECTED, sizeof (EXPECTED)), 0);
 }