diff --git a/lib/Kconfig b/lib/Kconfig
index 32f3e5a..4af07ec 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -276,4 +276,11 @@
 	  so its calculations are in fixed point. Modules can select this
 	  when they require this function. Module will be called cordic.
 
+config MPILIB
+	tristate "Multiprecision maths library"
+	help
+	  Multiprecision maths library from GnuPG.
+	  It is used to implement RSA digital signature verification,
+	  which is used by IMA/EVM digital signature extension.
+
 endmenu