crypto: lib/mpi - Add error checks to extension

The remaining functions added by commit
a8ea8bdd9df92a0e5db5b43900abb7a288b8a53e did not check for memory
allocation errors. Add the checks and chang

crypto: lib/mpi - Add error checks to extension

The remaining functions added by commit
a8ea8bdd9df92a0e5db5b43900abb7a288b8a53e did not check for memory
allocation errors. Add the checks and change the API to allow errors
to be returned.

Fixes: a8ea8bdd9df9 ("lib/mpi: Extend the MPI library")
Signed-off-by: Herbert Xu <[email protected]>

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Revert "lib/mpi: Extend the MPI library"

This partially reverts commit a8ea8bdd9df92a0e5db5b43900abb7a288b8a53e.

Most of it is no longer needed since sm2 has been removed. However,
the following f

Revert "lib/mpi: Extend the MPI library"

This partially reverts commit a8ea8bdd9df92a0e5db5b43900abb7a288b8a53e.

Most of it is no longer needed since sm2 has been removed. However,
the following functions have been kept as they have developed other
uses:

mpi_copy

mpi_mod

mpi_test_bit
mpi_set_bit
mpi_rshift

mpi_add
mpi_sub
mpi_addm
mpi_subm

mpi_mul
mpi_mulm

mpi_tdiv_r
mpi_fdiv_r

Signed-off-by: Herbert Xu <[email protected]>

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Revert "lib/mpi: Introduce ec implementation to MPI library"

This reverts commit d58bb7e55a8a65894cc02f27c3e2bf9403e7c40f.

It's no longer needed since sm2 has been removed.

Signed-off-by: Herbert

Revert "lib/mpi: Introduce ec implementation to MPI library"

This reverts commit d58bb7e55a8a65894cc02f27c3e2bf9403e7c40f.

It's no longer needed since sm2 has been removed.

Signed-off-by: Herbert Xu <[email protected]>

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lib/mpi: fix spelling mistakes

Fix some spelling mistakes in comments:
flaged ==> flagged
bufer ==> buffer
multipler ==> multiplier
MULTIPLER ==> MULTIPLIER
leaset ==> least
chnage ==> change

Link:

lib/mpi: fix spelling mistakes

Fix some spelling mistakes in comments:
flaged ==> flagged
bufer ==> buffer
multipler ==> multiplier
MULTIPLER ==> MULTIPLIER
leaset ==> least
chnage ==> change

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Zhen Lei <[email protected]>
Cc: Herbert Xu <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

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lib/mpi: Introduce ec implementation to MPI library

The implementation of EC is introduced from libgcrypt as the
basic algorithm of elliptic curve, which can be more perfectly
integrated with MPI im

lib/mpi: Introduce ec implementation to MPI library

The implementation of EC is introduced from libgcrypt as the
basic algorithm of elliptic curve, which can be more perfectly
integrated with MPI implementation.
Some other algorithms will be developed based on mpi ecc, such as SM2.

Signed-off-by: Tianjia Zhang <[email protected]>
Tested-by: Xufeng Zhang <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>

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lib/mpi: Extend the MPI library

Expand the mpi library based on libgcrypt, and the ECC algorithm of
mpi based on libgcrypt requires these functions.
Some other algorithms will be developed based on

lib/mpi: Extend the MPI library

Expand the mpi library based on libgcrypt, and the ECC algorithm of
mpi based on libgcrypt requires these functions.
Some other algorithms will be developed based on mpi ecc, such as SM2.

Signed-off-by: Tianjia Zhang <[email protected]>
Tested-by: Xufeng Zhang <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>

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lib/mpi: Add mpi_sub_ui()

Add mpi_sub_ui() based on Gnu MP mpz_sub_ui() function from file
mpz/aors_ui.h[1] from change id 510b83519d1c adapting the code to the
kernel's data structures, helper func

lib/mpi: Add mpi_sub_ui()

Add mpi_sub_ui() based on Gnu MP mpz_sub_ui() function from file
mpz/aors_ui.h[1] from change id 510b83519d1c adapting the code to the
kernel's data structures, helper functions and coding style and also
removing the defines used to produce mpz_sub_ui() and mpz_add_ui()
from the same code.

[1] https://gmplib.org/repo/gmp-6.2/file/510b83519d1c/mpz/aors.h

Signed-off-by: Marcelo Henrique Cerri <[email protected]>
Signed-off-by: Stephan Mueller <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 26

Based on 1 normalized pattern(s):

gnupg is free software you can redistribute it and or modify it
under the terms of the gnu ge

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 26

Based on 1 normalized pattern(s):

gnupg is free software you can redistribute it and or modify it
under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version gnupg is distributed in the hope that
it will be useful but without any warranty without even the implied
warranty of merchantability or fitness for a particular purpose see
the gnu general public license for more details you should have
received a copy of the gnu general public license along with this
program if not write to the free software foundation inc 59 temple
place suite 330 boston ma 02111 1307 usa note this code is heavily
based on the gnu mp library actually it s the same code with only
minor changes in the way the data is stored this is to support the
abstraction of an optional secure memory allocation which may be
used to avoid revealing of sensitive data due to paging etc the gnu
mp library itself is published under the lgpl however i decided to
publish this code under the plain gpl

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 14 file(s).

Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Allison Randal <[email protected]>
Reviewed-by: Kate Stewart <[email protected]>
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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lib/mpi: headers cleanup

MPI headers contain definitions for huge number of non-existing
functions.

Most part of these functions was removed in 2012 by Dmitry Kasatkin
- 7cf4206a99d1 ("Remove unus

lib/mpi: headers cleanup

MPI headers contain definitions for huge number of non-existing
functions.

Most part of these functions was removed in 2012 by Dmitry Kasatkin
- 7cf4206a99d1 ("Remove unused code from MPI library")
- 9e235dcaf4f6 ("Revert "crypto: GnuPG based MPI lib - additional ...")
- bc95eeadf5c6 ("lib/mpi: removed unused functions")
however headers wwere not updated properly.

Also I deleted some unused macros.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Vasily Averin <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Cc: Dmitry Kasatkin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

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crypto: rsa - Generate fixed-length output

Every implementation of RSA that we have naturally generates
output with leading zeroes. The one and only user of RSA,
pkcs1pad wants to have those leadin

crypto: rsa - Generate fixed-length output

Every implementation of RSA that we have naturally generates
output with leading zeroes. The one and only user of RSA,
pkcs1pad wants to have those leading zeroes in place, in fact
because they are currently absent it has to write those zeroes
itself.

So we shouldn't be stripping leading zeroes in the first place.
In fact this patch makes rsa-generic produce output with fixed
length so that pkcs1pad does not need to do any extra work.

This patch also changes DH to use the new interface.

Signed-off-by: Herbert Xu <[email protected]>

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lib/mpi: purge mpi_set_buffer()

mpi_set_buffer() has no in-tree users and similar functionality is provided
by mpi_read_raw_data().

Remove mpi_set_buffer().

Signed-off-by: Nicolai Stange <nicstang

lib/mpi: purge mpi_set_buffer()

mpi_set_buffer() has no in-tree users and similar functionality is provided
by mpi_read_raw_data().

Remove mpi_set_buffer().

Signed-off-by: Nicolai Stange <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>

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lib/mpi: clean unused SHA1_DIGEST_LENGTH

The define SHA1_DIGEST_LENGTH is not used anywhere, so remove it.

Signed-off-by: LABBE Corentin <[email protected]>
Signed-off-by: Herbert Xu <herbe

lib/mpi: clean unused SHA1_DIGEST_LENGTH

The define SHA1_DIGEST_LENGTH is not used anywhere, so remove it.

Signed-off-by: LABBE Corentin <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>

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lib/mpi: Add mpi sgl helpers

Add mpi_read_raw_from_sgl and mpi_write_to_sgl helpers.

Signed-off-by: Tadeusz Struk <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>

MPILIB: add mpi_read_buf() and mpi_get_size() helpers

Added a mpi_read_buf() helper function to export MPI to a buf provided by
the user, and a mpi_get_size() helper, that tells the user how big the

MPILIB: add mpi_read_buf() and mpi_get_size() helpers

Added a mpi_read_buf() helper function to export MPI to a buf provided by
the user, and a mpi_get_size() helper, that tells the user how big the buf is.
Changed mpi_free to use kzfree instead of kfree because it is used to free
crypto keys.

Signed-off-by: Tadeusz Struk <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>

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MPILIB: Provide a function to read raw data into an MPI

Provide a function to read raw data of a predetermined size into an MPI rather
than expecting the size to be encoded within the data. The dat

MPILIB: Provide a function to read raw data into an MPI

Provide a function to read raw data of a predetermined size into an MPI rather
than expecting the size to be encoded within the data. The data is assumed to
represent an unsigned integer, and the resulting MPI will be positive.

The function looks like this:

MPI mpi_read_raw_data(const void *, size_t);

This is useful for reading ASN.1 integer primitives where the length is encoded
in the ASN.1 metadata.

Signed-off-by: David Howells <[email protected]>
Signed-off-by: Rusty Russell <[email protected]>

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lib/mpi: replaced MPI_NULL with normal NULL

MPI_NULL is replaced with normal NULL.

Signed-off-by: Dmitry Kasatkin <[email protected]>
Reviewed-by: Tetsuo Handa <[email protected]

lib/mpi: replaced MPI_NULL with normal NULL

MPI_NULL is replaced with normal NULL.

Signed-off-by: Dmitry Kasatkin <[email protected]>
Reviewed-by: Tetsuo Handa <[email protected]>
Signed-off-by: James Morris <[email protected]>

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crypto: GnuPG based MPI lib - header files (part 2)

Adds the multi-precision-integer maths library which was originally taken
from GnuPG and ported to the kernel by (among others) David Howells.
Thi

crypto: GnuPG based MPI lib - header files (part 2)

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 <[email protected]>

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