test: add cmac unit test

diff --git a/test/unit/cmac.c b/test/unit/cmac.c
new file mode 100644 (file)
index 0000000..d639220
--- /dev/null
+++ b/test/unit/cmac.c
@@ -0,0 +1,101 @@
+/*
+ **********************************************************************
+ * Copyright (C) Miroslav Lichvar  2019
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ * 
+ * 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, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ * 
+ **********************************************************************
+ */
+
+#include <config.h>
+#include <sysincl.h>
+#include <cmac.h>
+#include <logging.h>
+#include "test.h"
+
+#define MAX_KEY_LENGTH 64
+#define MAX_HASH_LENGTH 64
+
+struct cmac_test {
+  const char *name;
+  const unsigned char key[MAX_KEY_LENGTH];
+  unsigned int key_length;
+  const unsigned char hash[MAX_HASH_LENGTH];
+  unsigned int hash_length;
+};
+
+void
+test_unit(void)
+{
+  unsigned char data[] = "abcdefghijklmnopqrstuvwxyz0123456789";
+  unsigned char hash[MAX_HASH_LENGTH];
+  struct cmac_test tests[] = {
+    { "AES128", "\xfc\x24\x97\x1b\x52\x66\xdc\x46\xef\xe0\xe8\x08\x46\x89\xb6\x88", 16,
+                "\xaf\x3c\xfe\xc2\x66\x71\x08\x04\xd4\xaf\x5b\x16\x2b\x11\xf4\x85", 16 },
+    { "AES256", "\x14\x02\x8e\x7d\x17\x3c\x2f\x4e\x17\x0f\x37\x96\xc3\x2c\xc5\x99"
+                "\x18\xdd\x55\x23\xb7\xd7\x9b\xc5\x76\x36\x88\x3f\xc5\x82\xb5\x83", 32,
+                "\xfe\xf7\x94\x96\x14\x04\x11\x0b\x87\xe4\xd4\x3f\x81\xb3\xb2\x2d", 16 },
+    { "", "", 0, "", 0 }
+  };
+
+  CMC_Instance inst;
+  unsigned int length;
+  int i, j;
+
+#ifndef HAVE_CMAC
+  TEST_REQUIRE(0);
+#endif
+
+  for (i = 0; tests[i].name[0] != '\0'; i++) {
+    TEST_CHECK(CMC_GetKeyLength(tests[i].name) == tests[i].key_length);
+
+    DEBUG_LOG("testing %s", tests[i].name);
+
+    for (j = 0; j <= 128; j++) {
+      if (j == tests[i].key_length)
+        continue;
+      TEST_CHECK(!CMC_CreateInstance(tests[i].name, tests[i].key, j));
+    }
+
+    inst = CMC_CreateInstance(tests[i].name, tests[i].key, tests[i].key_length);
+    TEST_CHECK(inst);
+
+    TEST_CHECK(!CMC_CreateInstance("nosuchcipher", tests[i].key, tests[i].key_length));
+
+    for (j = 0; j <= sizeof (hash); j++) {
+      memset(hash, 0, sizeof (hash));
+      length = CMC_Hash(inst, data, sizeof (data) - 1, hash, j);
+
+#if 0
+      for (int k = 0; k < length; k++)
+        printf("\\x%02x", hash[k]);
+      printf("\n");
+#endif
+
+      if (j >= tests[i].hash_length)
+        TEST_CHECK(length == tests[i].hash_length);
+      else
+        TEST_CHECK(length == j);
+
+      TEST_CHECK(!memcmp(hash, tests[i].hash, length));
+    }
+
+    for (j = 0; j < sizeof (data); j++) {
+      length = CMC_Hash(inst, data, j, hash, sizeof (hash));
+      TEST_CHECK(length == tests[i].hash_length);
+    }
+
+    CMC_DestroyInstance(inst);
+  }
+}