sample: Add HMAC

Add a HMAC sample code.

Signed-off-by: Yasushi SHOJI <[email protected]>

Author: yashi

samples/posix/CMakeLists.txt

@@ -1,2 +1,3 @@
 add_subdirectory(simple-send-canbus)
 add_subdirectory(simple-send-usart)
+add_subdirectory(hmac)

samples/posix/hmac/CMakeLists.txt

@@ -0,0 +1,3 @@
+add_executable(sample-hmac EXCLUDE_FROM_ALL src/main.c)
+target_include_directories(sample-hmac PRIVATE ${csp_inc})
+target_link_libraries(sample-hmac PRIVATE csp)

samples/posix/hmac/src/main.c

@@ -0,0 +1,24 @@
+#include <csp/csp.h>
+#include <csp/csp_debug.h>
+#include <csp/csp_id.h>
+#include <csp/crypto/csp_hmac.h>
+
+int main(int argc, char * argv[])
+{
+	csp_packet_t * packet;
+
+	csp_init();
+
+	packet = csp_buffer_get_always();
+
+	csp_id_prepend(packet);
+
+	memcpy(packet->data, "abc", 3);
+	packet->length += 3;
+	packet->frame_length += 3;
+
+	csp_hmac_append(packet, true);
+	csp_hmac_verify(packet, true);
+
+	return 0;
+}