1 files changed, 89 insertions, 0 deletions
diff --git a/shake256.c b/shake256.c
new file mode 100644
index 0000000..38c9b40
--- /dev/null
+++ b/shake256.c
@@ -0,0 +1,89 @@
+/* See LICENSE file for copyright and license details. */
+#ifdef SUPPORT_SHAKE
+# define TEST
+# include "common.h"
+
+
+#define MSG5 "\x13"
+#define MSG30 "\x53\x58\x7B\x19"
+#define MSG1600_32 "\xA3\xA3\xA3\xA3"
+#define MSG1600_160 MSG1600_32 MSG1600_32 MSG1600_32 MSG1600_32 MSG1600_32
+#define MSG1600_800 MSG1600_160 MSG1600_160 MSG1600_160 MSG1600_160 MSG1600_160
+#define MSG1600 MSG1600_800 MSG1600_800
+#define MSG1605 MSG1600_800 MSG1600_800 "\x03"
+#define MSG1630 MSG1600_800 MSG1600_800 "\xA3\xA3\xA3\x23"
+
+
+static struct testcase testcases[] = {
+	{1, 0, "",      "46b9dd2b0ba88d13233b3feb743eeb243fcd52ea62b81b82b50c27646ed5762f"},
+	{1, 5, MSG5,    "48a5c11abaeeff092f3646ef0d6b3d3ff76c2f55f9c732ac6470c03764008212"},
+	{1, 6, MSG30,   "465d081dff875e396200e4481a3e9dcd88d079aa6d66226cb6ba454107cb81a7"},
+	{1, 0, MSG1600, "cd8a920ed141aa0407a22d59288652e9d9f1a7ee0c1e7c1ca699424da84a904d"},
+	{1, 5, MSG1605, "98d093b067475760124ffb9204a5b327c6bb05c54ff234f0b43fac7240415166"},
+	{1, 6, MSG1630, "8a8325079b0fc3265d52f59855cafe655df438aa639f6fec991f2494330ce32f"}
+};
+
+
+#else
+# define TEST_UNSUPPORTED
+# include "common.h"
+#endif
+
+
+static int
+main_test(void)
+{
+	TEST_MAIN("SHAKE256", SHAKE256);
+}
+
+
+int
+main(void)
+{
+#ifdef SUPPORT_SHAKE
+	struct libhashsum_hasher hasher;
+	char hexsum[1024];
+#endif
+
+	int r = main_test();
+	if (r)
+		return r;
+
+	ASSERT(!libhashsum_init_shake256_hasher(&hasher, 8));
+	ASSERT(!strcmp(hasher.algorithm_string, "SHAKE256[n=8]"));
+	ASSERT(!hasher.finalise_const(&hasher, "", 0, 0));
+	ASSERT(hasher.hash_size == 1);
+	hex(hexsum, hasher.hash_output, hasher.hash_size);
+	ASSERT(!strcmp(hexsum, "46"));
+
+	ASSERT(!libhashsum_init_shake256_hasher(&hasher, 32));
+	ASSERT(!strcmp(hasher.algorithm_string, "SHAKE256[n=32]"));
+	ASSERT(!hasher.finalise_const(&hasher, "", 0, 0));
+	ASSERT(hasher.hash_size == 4);
+	hex(hexsum, hasher.hash_output, hasher.hash_size);
+	ASSERT(!strcmp(hexsum, "46b9dd2b"));
+
+	ASSERT(!libhashsum_init_shake256_hasher(&hasher, 32));
+	ASSERT(!strcmp(hasher.algorithm_string, "SHAKE256[n=32]"));
+	ASSERT(!hasher.finalise_const(&hasher, MSG1600, 1600/8, 0));
+	ASSERT(hasher.hash_size == 4);
+	hex(hexsum, hasher.hash_output, hasher.hash_size);
+	ASSERT(!strcmp(hexsum, "cd8a920e"));
+
+	ASSERT(!libhashsum_init_shake256_hasher(&hasher, 256));
+	ASSERT(!strcmp(hasher.algorithm_string, "SHAKE256"));
+	ASSERT(!hasher.finalise_const(&hasher, MSG1600, 1600/8, 0));
+	ASSERT(hasher.hash_size == 256/8);
+	hex(hexsum, hasher.hash_output, hasher.hash_size);
+	ASSERT(!strcmp(hexsum, "cd8a920ed141aa0407a22d59288652e9d9f1a7ee0c1e7c1ca699424da84a904d"));
+
+	ASSERT(!libhashsum_init_shake256_hasher(&hasher, 512));
+	ASSERT(!strcmp(hasher.algorithm_string, "SHAKE256[n=512]"));
+	ASSERT(!hasher.finalise_const(&hasher, MSG1600, 1600/8, 0));
+	ASSERT(hasher.hash_size == 512/8);
+	hex(hexsum, hasher.hash_output, hasher.hash_size);
+	ASSERT(!strcmp(hexsum, "cd8a920ed141aa0407a22d59288652e9d9f1a7ee0c1e7c1ca699424da84a904d"
+	                       "2d700caae7396ece96604440577da4f3aa22aeb8857f961c4cd8e06f0ae6610b"));
+
+	return 0;
+}