1 files changed, 126 insertions, 0 deletions
diff --git a/examples/new.c b/examples/new.c
new file mode 100644
index 0000000..60f9437
--- /dev/null
+++ b/examples/new.c
@@ -0,0 +1,126 @@
+/*
+ * Demo on how to use /dev/crypto device for HMAC.
+ *
+ * Placed under public domain.
+ *
+ */
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#include <sys/ioctl.h>
+#include "../ncr.h"
+#include <stdlib.h>
+
+#define DATA_SIZE 4096
+
+static void randomize_data(uint8_t * data, size_t data_size)
+{
+int i;
+	
+	srand(time(0)*getpid());
+	for (i=0;i<data_size;i++) {
+		data[i] = rand() & 0xff;
+	}
+}
+
+static int
+test_ncr_data(int cfd)
+{
+	struct ncr_data_init_st init;
+	struct ncr_data_st kdata;
+	uint8_t data[DATA_SIZE];
+	uint8_t data_bak[DATA_SIZE];
+	int i;
+
+	randomize_data(data, sizeof(data));
+	memcpy(data_bak, data, sizeof(data));
+
+	init.max_object_size = DATA_SIZE;
+	init.flags = NCR_DATA_FLAG_EXPORTABLE;
+	init.initial_data = data;
+	init.initial_data_size = sizeof(data);
+
+	if (ioctl(cfd, NCRIO_DATA_INIT, &init)) {
+		perror("ioctl(NCRIO_DATA_INIT)");
+		return 1;
+	}
+
+	memset(data, 0, sizeof(data));
+
+	kdata.desc = init.desc;
+	kdata.data = data;
+	kdata.data_size = sizeof(data);
+	kdata.append_flag = 0;
+
+	if (ioctl(cfd, NCRIO_DATA_GET, &kdata)) {
+		perror("ioctl(NCRIO_DATA_GET)");
+		return 1;
+	}
+
+	if (memcmp(data, data_bak, sizeof(data))!=0) {
+		fprintf(stderr, "data returned but differ!\n");
+		return 1;
+	}
+
+	/* test set */
+	memset(data, 0xf1, sizeof(data));
+
+	kdata.desc = init.desc;
+	kdata.data = data;
+	kdata.data_size = sizeof(data);
+	kdata.append_flag = 0;
+
+	if (ioctl(cfd, NCRIO_DATA_SET, &kdata)) {
+		perror("ioctl(NCRIO_DATA_SET)");
+		return 1;
+	}
+
+	/* test get after set */
+	memset(data, 0, sizeof(data));
+
+	kdata.desc = init.desc;
+	kdata.data = data;
+	kdata.data_size = sizeof(data);
+	kdata.append_flag = 0;
+
+	if (ioctl(cfd, NCRIO_DATA_GET, &kdata)) {
+		perror("ioctl(NCRIO_DATA_GET)");
+		return 1;
+	}
+
+	for(i=0;i<kdata.data_size;i++) {
+		if (((uint8_t*)kdata.data)[i] != 0xf1) {
+			fprintf(stderr, "data returned but differ!\n");
+			return 1;
+		}
+	}
+
+	return 0; /* ok */
+}
+
+int
+main()
+{
+	int fd = -1, cfd = -1;
+
+	/* Open the crypto device */
+	fd = open("/dev/crypto", O_RDWR, 0);
+	if (fd < 0) {
+		perror("open(/dev/crypto)");
+		return 1;
+	}
+
+	/* Run the test itself */
+	if (test_ncr_data(cfd))
+		return 1;
+
+	/* Close the original descriptor */
+	if (close(fd)) {
+		perror("close(fd)");
+		return 1;
+	}
+
+	return 0;
+}