Index: yc_calc.h
===================================================================
--- /YC3121_SDK/fw/crypt/yc_calc.h	(revision 647)
+++ /YC3121_SDK/fw/crypt/yc_calc.h	(working copy)
@@ -106,6 +106,6 @@
 void cpu_open_uniform_branch_timing();
 void cpu_close_branch_self();
 void cpu_close_uniform_branch_timing();
-
+uint32_t CRYPT_GetVersion(void);
 
 #endif
Index: yc_calc.c
===================================================================
--- /YC3121_SDK/fw/crypt/yc_calc.c	(revision 644)
+++ /YC3121_SDK/fw/crypt/yc_calc.c	(working copy)
@@ -1558,6 +1558,10 @@
 		__asm("NOP");
 }
 
-
+#define CRYPT_LIB_VERSION 0x0001
+uint32_t CRYPT_GetVersion(void)
+{
+	return CRYPT_LIB_VERSION;
+}
 
 
Index: yc_crypt.lib
===================================================================
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