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 warning has been fixed.
This library is used to implemenet RSA digital signature verification
used in IMA/EVM integrity protection subsystem.
Signed-off-by: Dmitry Kasatkin <dmitry.kasat...@intel.com>
---
crypto/Kconfig | 6 ++++++
crypto/Makefile | 1 +
crypto/mpi/Makefile | 20 ++++++++++++++++++++
3 files changed, 27 insertions(+), 0 deletions(-)
create mode 100644 crypto/mpi/Makefile
diff --git a/crypto/Kconfig b/crypto/Kconfig
index ae27b753..4b1b9a4 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -857,6 +857,12 @@ config CRYPTO_USER_API_SKCIPHER
This option enables the user-spaces interface for symmetric
key cipher algorithms.
+config CRYPTO_MPILIB
+ bool "Multiprecision maths library (EXPERIMENTAL)"
+ depends on CRYPTO
+ help
+ Multiprecision maths library from GnuPG
+
source "drivers/crypto/Kconfig"
endif # if CRYPTO
diff --git a/crypto/Makefile b/crypto/Makefile
index ce5a813..604006d 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -88,6 +88,7 @@ obj-$(CONFIG_CRYPTO_GHASH) += ghash-generic.o
obj-$(CONFIG_CRYPTO_USER_API) += af_alg.o
obj-$(CONFIG_CRYPTO_USER_API_HASH) += algif_hash.o
obj-$(CONFIG_CRYPTO_USER_API_SKCIPHER) += algif_skcipher.o
+obj-$(CONFIG_CRYPTO_MPILIB) += mpi/
#
# generic algorithms and the async_tx api
diff --git a/crypto/mpi/Makefile b/crypto/mpi/Makefile
new file mode 100644
index 0000000..978dc58
--- /dev/null
+++ b/crypto/mpi/Makefile
@@ -0,0 +1,20 @@
+#
+# MPI multiprecision maths library (from gpg)
+#
+
+obj-$(CONFIG_CRYPTO_MPILIB) = \
+ 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
+
--
1.7.4.1
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