diff --git a/src/bsp/lk/lib/cksum/crc16.c b/src/bsp/lk/lib/cksum/crc16.c
new file mode 100644
index 0000000..cbc6496
--- /dev/null
+++ b/src/bsp/lk/lib/cksum/crc16.c
@@ -0,0 +1,38 @@
+/*
+ * Computes the CRC for transmitted and received data using
+ * the CCITT 16bit algorithm (X^16 + X^12 + X^5 + 1) with
+ * a 0xFFFF initialization vector.
+ */
+
+#define CRC16_INIT_VALUE  0xFFFF
+
+ /*
+  * Computes an updated version of the CRC from existing CRC.
+  * crc: the previous values of the CRC
+  * buf: the data on which to apply the checksum
+  * length: the number of bytes of data in 'buf' to be calculated.
+  */
+unsigned short update_crc16(unsigned short crc, const unsigned char *buf,
+			   unsigned int length)
+{
+	unsigned int i;
+	for (i = 0; i < length; i++) {
+		crc = (unsigned char) (crc >> 8) | (crc << 8);
+		crc ^= buf[i];
+		crc ^= (unsigned char) (crc & 0xff) >> 4;
+		crc ^= (crc << 8) << 4;
+		crc ^= ((crc & 0xff) << 4) << 1;
+	}
+	return crc;
+}
+
+ /*
+  * Computes a CRC, starting with an initialization value.
+  * buf: the data on which to apply the checksum
+  * length: the number of bytes of data in 'buf' to be calculated.
+  */
+unsigned short crc16(const unsigned char *buf, unsigned int length)
+{
+	unsigned short crc = CRC16_INIT_VALUE;
+	return update_crc16(crc, buf, length);
+}