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/01-shake128/Makefile | 16 ++++++++++++++++
 examples/01-shake128/hex.h    |  1 +
 examples/01-shake128/main.c   | 24 ++++++++++++++++++++++++
 examples/01-shake128/sha3.c   |  1 +
 examples/01-shake128/sha3.h   |  1 +
 5 files changed, 43 insertions(+)
 create mode 100644 examples/01-shake128/Makefile
 create mode 120000 examples/01-shake128/hex.h
 create mode 100644 examples/01-shake128/main.c
 create mode 120000 examples/01-shake128/sha3.c
 create mode 120000 examples/01-shake128/sha3.h

(limited to 'examples/01-shake128')

diff --git a/examples/01-shake128/Makefile b/examples/01-shake128/Makefile
new file mode 100644
index 0000000..f5080cd
--- /dev/null
+++ b/examples/01-shake128/Makefile
@@ -0,0 +1,16 @@
+CFLAGS=-W -Wall -Wextra -Werror -pedantic -std=c11 -O3 -march=native -mtune=native
+APP=./shake128-example
+OBJS=sha3.o main.o
+
+.PHONY=all
+
+all: $(APP)
+
+$(APP): $(OBJS)
+	$(CC) -o $(APP) $(CFLAGS) $(OBJS)
+
+%.o: %.c
+	$(CC) -c $(CFLAGS) $<
+
+clean:
+	$(RM) -f $(APP) $(OBJS)
diff --git a/examples/01-shake128/hex.h b/examples/01-shake128/hex.h
new file mode 120000
index 0000000..2adfa3e
--- /dev/null
+++ b/examples/01-shake128/hex.h
@@ -0,0 +1 @@
+../../hex.h
\ No newline at end of file
diff --git a/examples/01-shake128/main.c b/examples/01-shake128/main.c
new file mode 100644
index 0000000..f2a2347
--- /dev/null
+++ b/examples/01-shake128/main.c
@@ -0,0 +1,24 @@
+//
+// shake128-example: hash contents of DATA with SHAKE128 and print first
+// 200 bytes of SHAKE128 hash of data 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";
+
+int main() {
+  // hash data
+  uint8_t buf[200] = { 0 };
+  shake128_xof_once(DATA, sizeof(DATA), buf, sizeof(buf));
+
+  // print result to stdout
+  printf("SHAKE128 (200 bytes): ");
+  hex_write(stdout, buf, sizeof(buf));
+  printf("\n");
+
+  return 0;
+}
diff --git a/examples/01-shake128/sha3.c b/examples/01-shake128/sha3.c
new file mode 120000
index 0000000..4748193
--- /dev/null
+++ b/examples/01-shake128/sha3.c
@@ -0,0 +1 @@
+../../sha3.c
\ No newline at end of file
diff --git a/examples/01-shake128/sha3.h b/examples/01-shake128/sha3.h
new file mode 120000
index 0000000..b7c53d4
--- /dev/null
+++ b/examples/01-shake128/sha3.h
@@ -0,0 +1 @@
+../../sha3.h
\ No newline at end of file
-- 
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