tests/unittests: add tweetnacl unittest

tests/unittests/tests-tweetnacl/Makefile

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+include $(RIOTBASE)/Makefile.base

tests/unittests/tests-tweetnacl/Makefile.include

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+USEMODULE += random
+USEPKG += tweetnacl

tests/unittests/tests-tweetnacl/tests-tweetnacl.c

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+/*
+ * Copyright (C) 2016 Kaspar Schleiser <kaspar@schleiser.de>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     unittests
+ * @{
+ *
+ * @file
+ * @brief       tweetnacl NaCl crypto library tests
+ *
+ * @author      Kaspar Schleiser <kaspar@schleiser.de>
+ * @author      Martin Landsmann <Martin.Landsmann@HAW-Hamburg.de>
+ *
+ * @}
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include <tweetnacl.h>
+#include "embUnit.h"
+#include "tests-tweetnacl.h"
+
+static const char message[] = "0123456789abcdef";
+static char r[sizeof(message)];
+
+#define MLEN (sizeof(message) + crypto_box_ZEROBYTES)
+
+static unsigned char alice_pk[crypto_box_PUBLICKEYBYTES];
+static unsigned char alice_sk[crypto_box_SECRETKEYBYTES];
+static unsigned char bob_pk[crypto_box_PUBLICKEYBYTES];
+static unsigned char bob_sk[crypto_box_SECRETKEYBYTES];
+static unsigned char m[MLEN];
+static unsigned char c[MLEN];
+static const unsigned char n[crypto_box_NONCEBYTES];
+static unsigned char result[MLEN];
+
+static void setUp(void)
+{
+    /* Initialize */
+    random_init(0);
+}
+
+static void tearDown(void)
+{
+    /* Finalize */
+}
+
+static void test_tweetnacl_01(void)
+{
+    int res;
+
+    /* Creating keypair ALICE... */
+    crypto_box_keypair(alice_pk, alice_sk);
+
+    /* Creating keypair BOB... */
+    crypto_box_keypair(bob_pk, bob_sk);
+
+    memset(m, 0, crypto_box_ZEROBYTES);
+    memcpy(m + crypto_box_ZEROBYTES, message, MLEN - crypto_box_ZEROBYTES);
+
+    /* Encrypting using pk_bob... */
+    crypto_box(c, m, MLEN, n, bob_pk, alice_sk);
+
+    memset(result, '\0', sizeof(result));
+
+    /* Decrypting... */
+    res = crypto_box_open(result, c, MLEN, n, alice_pk, bob_sk);
+
+    TEST_ASSERT_EQUAL_INT(0, res);
+
+    memset(r, 0, sizeof(r));
+    memcpy(r, result + crypto_box_ZEROBYTES, MLEN - crypto_box_ZEROBYTES);
+
+    TEST_ASSERT_EQUAL_STRING("0123456789abcdef", (const char*)r);
+}
+
+Test *tests_tweetnacl_all(void)
+{
+    EMB_UNIT_TESTFIXTURES(fixtures) {
+        new_TestFixture(test_tweetnacl_01)
+    };
+
+    EMB_UNIT_TESTCALLER(tweetnacl_tests, setUp, tearDown, fixtures);
+    return (Test*)&tweetnacl_tests;
+}
+
+void tests_tweetnacl(void)
+{
+    TESTS_RUN(tests_tweetnacl_all());
+}

tests/unittests/tests-tweetnacl/tests-tweetnacl.h

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+/*
+ * Copyright (C) 2016 Martin Landsmann
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @addtogroup  unittests
+ * @{
+ *
+ * @file
+ * @brief       Unittests for the ``tweetnacl`` package
+ *
+ * @author      Martin Landsmann <Martin.Landsmann@HAW-Hamburg.de>
+ */
+#ifndef TESTS_TWEETNACL_H
+#define TESTS_TWEETNACL_H
+
+#include "embUnit/embUnit.h"
+#include "random.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief MANDATORY function for collecting random Bytes
+ *        required by the tweetnacl package
+ */
+extern void randombytes(uint8_t *target, uint64_t n);
+
+/**
+*  @brief   The entry point of this test suite.
+*/
+void tests_tweetnacl(void);
+
+/**
+ * @brief   Generates tests for tweetnacl
+ *
+ * @return  embUnit tests if successful, NULL if not.
+ */
+Test *tests_tweetnacl_tests(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* TESTS_TWEETNACL_H */
+/** @} */