linux/lib/mpi, branch v3.6

Remove unused code from MPI library

2012-05-26T01:51:03Z

MPI library is used by RSA verification implementation. Few files contains functions which are never called. James Morris has asked to remove all of them. Signed-off-by: Dmitry Kasatkin Requested-by: James Morris Signed-off-by: James Morris

Revert "crypto: GnuPG based MPI lib - additional sources (part 4)"

2012-05-26T01:50:44Z

This reverts commit 7e8dec918ef8e0f68b4937c3c50fa57002077a4d. RSA verification implementation does not use this code. James Morris has asked to remove that. Signed-off-by: Dmitry Kasatkin Requested-by: James Morris Signed-off-by: James Morris

mpi: Avoid using freed pointer in mpi_lshift_limbs()

2012-04-18T02:14:28Z

At the start of the function we assign 'a->d' to 'ap'. Then we use the RESIZE_IF_NEEDED macro on 'a' - this may free 'a->d' and replace it with newly allocaetd storage. In that case, we'll be operating on freed memory further down in the function when we index into 'ap[]'. Since we don't actually need 'ap' until after the use of the RESIZE_IF_NEEDED macro we can just delay the assignment to it until after we've potentially resized, thus avoiding the issue. While I was there anyway I also changed the integer variable 'n' to be const. It might as well be since we only assign to it once and use it as a constant, and then the compiler will tell us if we ever assign to it in the future. Signed-off-by: Jesper Juhl Acked-by: Dmitry Kasatkin Signed-off-by: James Morris

lib: Fix 32-bit sparc udiv_qrnnd() definition in mpilib's longlong.h

2012-02-01T23:34:25Z

This copy of longlong.h is extremely dated and results in compile errors on sparc32 when MPILIB is enabled, copy over the more uptodate implementation from arch/sparc/math/sfp-util_32.h Reported-by: Al Viro Signed-off-by: David S. Miller Signed-off-by: James Morris

lib: Fix multiple definitions of clz_tab

2012-02-01T23:34:23Z

Both sparc 32-bit's software divide assembler and MPILIB provide clz_tab[] with identical contents. Break it out into a seperate object file and select it when SPARC32 or MPILIB is set. Reported-by: Al Viro Signed-off-by: David S. Miller Signed-off-by: James Morris

lib/mpi: added missing NULL check

2012-02-01T13:23:39Z

Added missing NULL check after mpi_alloc_limb_space(). Signed-off-by: Dmitry Kasatkin Reviewed-by: Tetsuo Handa Signed-off-by: James Morris

lib/mpi: added comment on divide by 0 case

2012-02-01T13:23:39Z

Comment explains that existing clients do not call this function with dsize == 0, which means that 1/0 should not happen. Signed-off-by: Dmitry Kasatkin Reviewed-by: Tetsuo Handa Signed-off-by: James Morris

lib/mpi: check for possible zero length

2012-02-01T13:23:39Z

Buggy client might pass zero nlimbs which is meaningless. Added check for zero length. Signed-off-by: Dmitry Kasatkin Reviewed-by: Tetsuo Handa Signed-off-by: James Morris

lib/mpi: removed unused functions

2012-02-01T13:23:14Z

do_encode_md() and mpi_get_keyid() are not parts of mpi library. They were used early versions of gnupg and in digsig project, but they are not used neither here nor there anymore. Signed-off-by: Dmitry Kasatkin Reviewed-by: Tetsuo Handa Signed-off-by: James Morris

lib/mpi: checks for zero divisor length

2012-02-01T13:23:14Z

Divisor length should not be 0. Signed-off-by: Dmitry Kasatkin Reviewed-by: Tetsuo Handa Signed-off-by: James Morris