Add sm3 demos and sm3_hmac bug fix

demos/sm3/CMakeLists.txt

@@ -4,5 +4,9 @@ project(sm3demo)
 include_directories(/usr/local/include)
 link_directories(/usr/local/lib)
 
-add_executable(sm3demo sm3demo.c)
-target_link_libraries(sm3demo gmssl)
+add_executable(sm3_demo sm3_demo.c)
+add_executable(sm3_hmac_demo sm3_hmac_demo.c)
+add_executable(sm3_kdf_demo sm3_kdf_demo.c)
+target_link_libraries(sm3_demo gmssl)
+target_link_libraries(sm3_hmac_demo gmssl)
+target_link_libraries(sm3_kdf_demo gmssl)

demos/sm3/Makefile

@@ -0,0 +1,9 @@
+all:
+	cc sm3_demo.c -lgmssl -o sm3_demo
+	cc sm3_hmac_demo.c -lgmssl -o sm3_hmac_demo
+	cc sm3_kdf_demo.c -lgmssl -o sm3_kdf_demo
+clean:
+	rm -fr sm3_demo
+	rm -fr sm3_hmac_demo
+	rm -fr sm3_kdf_demo
+

demos/sm3/sm3_hmac_demo.c

@@ -0,0 +1,42 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <gmssl/sm3.h>
+
+
+int main(void)
+{
+	SM3_HMAC_CTX hmac_ctx;
+	unsigned char key[16] = {
+		0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,
+		0x01,0xf2,0x03,0x04,0x05,0x06,0x07,0x08,
+	};
+	unsigned char mbuf[16] = {
+		0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,
+		0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,
+	};
+	unsigned char hmac[32] = {0};
+	int i;
+
+
+	sm3_hmac_init(&hmac_ctx, key, sizeof(key));
+	sm3_hmac_update(&hmac_ctx, mbuf, sizeof(mbuf));
+	sm3_hmac_finish(&hmac_ctx, hmac);
+
+	printf("hmac: ");
+	for (i = 0; i < sizeof(hmac); i++) {
+		printf("%02X", hmac[i]);
+	}
+	printf("\n");
+
+	memset(hmac, 0, sizeof(hmac));
+	sm3_hmac(key, sizeof(key), mbuf, sizeof(mbuf), hmac);
+
+	printf("hmac: ");
+	for (i = 0; i < sizeof(hmac); i++) {
+		printf("%02X", hmac[i]);
+	}
+	printf("\n");
+
+	return 0;
+}

demos/sm3/sm3_kdf_demo.c

@@ -0,0 +1,28 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <gmssl/sm3.h>
+
+
+int main(void)
+{
+	SM3_KDF_CTX kdf_ctx;
+	unsigned char key[16] = {0};
+	unsigned char raw[32] = {
+		0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,
+		0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,
+	};
+	int i;
+
+	sm3_kdf_init(&kdf_ctx, sizeof(key));
+	sm3_kdf_update(&kdf_ctx, raw, sizeof(raw));
+	sm3_kdf_finish(&kdf_ctx, key);
+
+	printf("key: ");
+	for (i = 0; i < sizeof(key); i++) {
+		printf("%02X", key[i]);
+	}
+	printf("\n");
+
+	return 0;
+}