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authorDmitry Kasatkin <dmitry.kasatkin@intel.com>2011-08-31 14:05:16 +0300
committerDmitry Kasatkin <dmitry.kasatkin@intel.com>2011-11-09 11:47:25 +0200
commitd9c46b184fcfd33c85a7dc48a653435a08e21f56 (patch)
tree472f003b19daaff085f31931d4a6d5c495a6f716 /lib
parent5ce3e312ec5c11abce13215be70700778bf601f0 (diff)
downloadlinaro-lsk-d9c46b184fcfd33c85a7dc48a653435a08e21f56.tar.gz
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: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Diffstat (limited to 'lib')
-rw-r--r--lib/Kconfig7
-rw-r--r--lib/Makefile2
-rw-r--r--lib/mpi/Makefile21
3 files changed, 30 insertions, 0 deletions
diff --git a/lib/Kconfig b/lib/Kconfig
index 32f3e5ae2be..4af07ec7f2d 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -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"
+ 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
diff --git a/lib/Makefile b/lib/Makefile
index a4da283f5dc..6ba8cbf4c72 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -115,6 +115,8 @@ obj-$(CONFIG_CPU_RMAP) += cpu_rmap.o
obj-$(CONFIG_CORDIC) += cordic.o
+obj-$(CONFIG_MPILIB) += mpi/
+
hostprogs-y := gen_crc32table
clean-files := crc32table.h
diff --git a/lib/mpi/Makefile b/lib/mpi/Makefile
new file mode 100644
index 00000000000..45ca90a8639
--- /dev/null
+++ b/lib/mpi/Makefile
@@ -0,0 +1,21 @@
+#
+# MPI multiprecision maths library (from gpg)
+#
+
+obj-$(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 \
+ mpiutil.o