diff --git a/lib/superfox/get_crc14.f90 b/lib/superfox/get_crc14.f90
new file mode 100644
index 000000000..635808972
--- /dev/null
+++ b/lib/superfox/get_crc14.f90
@@ -0,0 +1,25 @@
+subroutine get_crc14(mc,len,ncrc)
+!
+! 1. To calculate 14-bit CRC, mc(1:len-14) is the message and mc(len-13:len) are zero.
+! 2. To check a received CRC, mc(1:len is the received message plus CRC.
+!    ncrc will be zero if the received message/CRC are consistent
+!  
+  character c14*14
+  integer*1 mc(len)
+  integer*1 r(15),p(15)
+  integer ncrc
+! polynomial for 14-bit CRC 0x6757
+  data p/1,1,0,0,1,1,1,0,1,0,1,0,1,1,1/
+  
+! divide by polynomial
+  r=mc(1:15)
+  do i=0,len-15
+    r(15)=mc(i+15)
+    r=mod(r+r(1)*p,2)
+    r=cshift(r,1)
+  enddo
+
+  write(c14,'(14b1)') r(1:14)
+  read(c14,'(b14.14)') ncrc
+
+end subroutine get_crc14