Commit d9c46b18 authored by Dmitry Kasatkin's avatar Dmitry Kasatkin

crypto: GnuPG based MPI lib - make files (part 3)

Adds the multi-precision-integer maths library which was originally taken
from GnuPG and ported to the kernel by (among others) David Howells.
This version is taken from Fedora kernel 2.6.32-71.14.1.el6.
The difference is that checkpatch reported errors and warnings have been fixed.

This library is used to implemenet RSA digital signature verification
used in IMA/EVM integrity protection subsystem.

Due to patch size limitation, the patch is divided into 4 parts.
Signed-off-by: 's avatarDmitry Kasatkin <>
parent 5ce3e312
......@@ -276,4 +276,11 @@ config CORDIC
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"
Multiprecision maths library from GnuPG.
It is used to implement RSA digital signature verification,
which is used by IMA/EVM digital signature extension.
......@@ -115,6 +115,8 @@ obj-$(CONFIG_CPU_RMAP) += cpu_rmap.o
obj-$(CONFIG_CORDIC) += cordic.o
obj-$(CONFIG_MPILIB) += mpi/
hostprogs-y := gen_crc32table
clean-files := crc32table.h
# MPI multiprecision maths library (from gpg)
obj-$(CONFIG_MPILIB) = mpi.o
mpi-y = \
generic_mpih-lshift.o \
generic_mpih-mul1.o \
generic_mpih-mul2.o \
generic_mpih-mul3.o \
generic_mpih-rshift.o \
generic_mpih-sub1.o \
generic_mpih-add1.o \
mpicoder.o \
mpi-bit.o \
mpih-cmp.o \
mpih-div.o \
mpih-mul.o \
mpi-pow.o \
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