1 files changed, 138 insertions, 0 deletions
diff --git a/tests/crypt/test_sha256.c b/tests/crypt/test_sha256.c
new file mode 100644
index 000000000000..986e0513c34c
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+++ b/tests/crypt/test_sha256.c
@@ -0,0 +1,138 @@
+/*
+ * dhcpcd - DHCP client daemon
+ * Copyright (c) 2023 Tobias Heider <tobias.heider@canonical.com>
+ * Copyright (c) 2006-2018 Roy Marples <roy@marples.name>
+ * All rights reserved
+
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "config.h"
+#include "test.h"
+
+#ifdef SHA2_H
+#include SHA2_H
+#endif
+
+# ifndef SHA256_DIGEST_LENGTH
+#  define SHA256_DIGEST_LENGTH          32
+# endif
+
+static void
+print_md(FILE *stream, const uint8_t *md)
+{
+	int i;
+
+	fprintf(stream, "digest = 0x");
+	for (i = 0; i < SHA256_DIGEST_LENGTH; i++)
+		fprintf(stream, "%02x", *md++);
+	fprintf(stream, "\n");
+}
+
+static void
+test_md(const uint8_t *md, const uint8_t *tst)
+{
+	print_md(stdout, md);
+	if (memcmp(md, tst, SHA256_DIGEST_LENGTH) == 0)
+		return;
+	fprintf(stderr, "FAILED!\nExpected\t\t\t");
+	print_md(stderr, tst);
+	exit(EXIT_FAILURE);
+}
+
+static void
+sha256_test1(void)
+{
+	const uint8_t text[] = "Hi There";
+	const uint8_t expect[SHA256_DIGEST_LENGTH] = {
+		0xcc, 0x6d, 0x58, 0x96, 0xd7, 0x70, 0x10, 0x1e,
+		0xf0, 0x28, 0x0c, 0x94, 0x3a, 0x2d, 0x3c, 0x3f,
+		0x24, 0xcd ,0x5b, 0x11, 0x46, 0x4a, 0x51, 0x86,
+		0xda, 0xf7, 0xa2, 0x38, 0x47, 0x71, 0x62, 0xac
+	};
+	uint8_t digest[SHA256_DIGEST_LENGTH];
+	SHA256_CTX ctx;
+
+	printf ("SHA256 Test 1:\t\t");
+	SHA256_Init(&ctx);
+	SHA256_Update(&ctx, text, 8);
+	SHA256_Final(digest, &ctx);
+	test_md(digest, expect);
+}
+
+static void
+sha256_test2(void)
+{
+	const uint8_t text[] = "what do ya want for nothing?";
+	const uint8_t expect[SHA256_DIGEST_LENGTH] = {
+		0xb3, 0x81, 0xe7, 0xfe, 0xc6, 0x53, 0xfc, 0x3a,
+		0xb9, 0xb1, 0x78, 0x27, 0x23, 0x66, 0xb8, 0xac,
+		0x87, 0xfe, 0xd8, 0xd3, 0x1c, 0xb2, 0x5e, 0xd1,
+		0xd0, 0xe1, 0xf3, 0x31, 0x86, 0x44, 0xc8, 0x9c,
+	};
+	uint8_t digest[SHA256_DIGEST_LENGTH];
+	SHA256_CTX ctx;
+
+	printf ("SHA256 Test 2:\t\t");
+	SHA256_Init(&ctx);
+	SHA256_Update(&ctx, text, 28);
+	SHA256_Final(digest, &ctx);
+	test_md(digest, expect);
+}
+
+static void
+sha256_test3(void)
+{
+	const uint8_t expect[SHA256_DIGEST_LENGTH] = {
+		0x5c, 0xf6, 0x18, 0xb5, 0xb6, 0xd3, 0x8b, 0xd1,
+		0x6c, 0x2e, 0x55, 0x8e, 0xef, 0x4d, 0x4b, 0x6d,
+		0x52, 0x82, 0x84, 0x54, 0x7f, 0xd4, 0xa0, 0x9d,
+		0xa2, 0xab, 0xb6, 0xf0, 0x98, 0xec, 0x61, 0x93,
+	};
+	uint8_t digest[SHA256_DIGEST_LENGTH];
+	uint8_t text[50];
+	int i;
+	SHA256_CTX ctx;
+
+	printf ("SHA256 Test 3:\t\t");
+	for (i = 0; i < 50; i++)
+		text[i] = 0xdd;
+	SHA256_Init(&ctx);
+	SHA256_Update(&ctx, text, 50);
+	SHA256_Final(digest, &ctx);
+	test_md(digest, expect);
+}
+
+int test_sha256(void)
+{
+	printf ("Starting SHA256 tests...\n\n");
+	sha256_test1();
+	sha256_test2();
+	sha256_test3();
+	printf("\nAll tests pass.\n");
+	return 0;
+}