From 4eebef1961a1c01890fe11dc5f1b9f3a1ea705e0 Mon Sep 17 00:00:00 2001
From: Paul Duncan <pabs@pablotron.org>
Date: Wed, 6 Sep 2023 23:23:31 -0400
Subject: add examples/

---
 examples/02-kmac128/main.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 examples/02-kmac128/main.c

(limited to 'examples/02-kmac128/main.c')

diff --git a/examples/02-kmac128/main.c b/examples/02-kmac128/main.c
new file mode 100644
index 0000000..d1965a9
--- /dev/null
+++ b/examples/02-kmac128/main.c
@@ -0,0 +1,53 @@
+//
+// kmac128-example: Hash contents of DATA with KMAC128 and key and print first
+// 32 bytes of result to standard output.
+//
+#include <stdint.h>
+#include <stdio.h>
+#include "hex.h"
+#include "sha3.h"
+
+// test data
+static const uint8_t DATA[] = "this is some test data";
+
+static const struct {
+  const char *name;
+  kmac_params_t params;
+} ROWS[] = {{
+  .name = "KMAC128 (key = \"\", custom = \"\")",
+}, {
+  .name = "KMAC128 (key = \"foo\", custom = \"\")",
+  .params = {
+    .key = (uint8_t*) "foo",
+    .key_len = 3,
+  },
+}, {
+  .name = "KMAC128 (key = \"bar\", custom = \"\")",
+  .params = {
+    .key = (uint8_t*) "bar",
+    .key_len = 3,
+  },
+}, {
+  .name = "KMAC128 (key = \"bar\", custom = \"blum\")",
+  .params = {
+    .key = (uint8_t*) "bar",
+    .key_len = 3,
+    .custom = (uint8_t*) "blum",
+    .custom_len = 4,
+  },
+}};
+
+int main() {
+  for (size_t i = 0; i < sizeof(ROWS)/sizeof(ROWS[0]); i++) {
+    // hash data
+    uint8_t buf[32] = { 0 };
+    kmac128_xof_once(ROWS[i].params, DATA, sizeof(DATA), buf, sizeof(buf));
+
+    // print to stdout
+    printf("%s:\n", ROWS[i].name);
+    hex_write(stdout, buf, sizeof(buf));
+    printf("\n");
+  }
+
+  return 0;
+}
-- 
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