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435 Commits

Author SHA1 Message Date
Janos Follath
4b5edfa0bb Bignum: remove unused functions 
Signed-off-by: Janos Follath <janos.follath@arm.com>
 2024-02-15 10:47:56 +00:00
Janos Follath
1ba40585f9 Use mpi_core_exp_mod in bignum. 
The two algorithms are not equivalent. The original bignum
exponentiation was a sliding window algorithm. The one in
mpi_core_exp_mod uses a fixed window approach. This change is
intentional. We don't want to maintain two algorithms and decided to
keep the fixed window algorithm.

Signed-off-by: Janos Follath <janos.follath@arm.com>
 2024-02-15 10:47:56 +00:00
Valerio Setti
4e048f1749 bignum: removing usage of MPI_VALIDATE_RET() 
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
 2024-01-29 12:00:21 +01:00
Valerio Setti
a45a399a6b lib: remove NULL pointer checks performed with MBEDTLS_INTERNAL_VALIDATE[_RET] 
Symbols defined starting from MBEDTLS_INTERNAL_VALIDATE[_RET]
are removed as well.

Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
 2024-01-29 12:00:15 +01:00
Dave Rodgman
59059ec503 Merge remote-tracking branch 'origin/development' into msft-aarch64 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-11-30 09:34:41 +00:00
Dave Rodgman
e4a6f5a7ec Use size_t cast for pointer subtractions 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-11-21 17:09:46 +00:00
Dave Rodgman
16799db69a update headers 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-11-02 19:47:20 +00:00
Dave Rodgman
0a48717b83 Simplify Windows-on-Arm macros 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-10-16 09:25:59 +01:00
Minos Galanakis
1a3ad265cc Merge branch 'development-restricted' into mbedtls-3.5.0rc0-pr 
Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
 2023-10-03 21:57:51 +01:00
Dave Rodgman
7e9af05409 Fix IAR control bypasses initialisation warning 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-09-28 17:08:49 +01:00
Dave Rodgman
73d8591f7f Fix IAR change of sign warning 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-09-28 17:00:50 +01:00
Gilles Peskine
ca1e605b9c Merge remote-tracking branch 'upstream-public/development' into development-restricted-merge-20230925 
Conflicts:
* `include/mbedtls/build_info.h`: a new fragment to auto-enable
  `MBEDTLS_CIPHER_PADDING_PKCS7` was added in
  c9f4040f7f3356293e90c58d11f6567def641e08 in `development-restricted`.
  In `development`, this section of the file has moved to
  `include/mbedtls/config_adjust_legacy_crypto.h`.
* `library/bignum.c`: function name change in `development-restricted` vs
  comment change in development. The comment change in `development` is not
  really relevant, so just take the line from `development-restricted`.
 2023-09-25 16:16:26 +02:00
Dave Rodgman
1cfc43c77b Rename mbedtls_ct_bool_xor to mbedtls_ct_bool_ne 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-09-19 18:39:33 +01:00
Dave Rodgman
b69239c604 Improve docs in mbedtls_mpi_lt_mpi_ct 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-08-29 09:42:14 +01:00
Tom Cosgrove
3d2d599d3e
Merge pull request #7996 from gilles-peskine-arm/small_primes-gaps 
Reduce the size of the small primes table used by primality testing
 2023-08-22 12:48:56 +00:00
Gilles Peskine
30b0378008 Fix off-by-one error 
The value of p after adding the last entry in the gap table is not used.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-08-22 11:06:47 +02:00
Tom Cosgrove
31b2d7414d
Merge pull request #8053 from gilles-peskine-arm/mpi_exp_mod-remove_initial_copy 
mbedtls_mpi_exp_mod: remove spurious copy of the output variable
 2023-08-21 15:50:28 +00:00
Tom Cosgrove
d29648026b
Merge pull request #8017 from ivq/unchecked_return 
Fix a few unchecked return values
 2023-08-21 13:02:53 +00:00
Chien Wong
2e3858f5eb
Undo a change 
Signed-off-by: Chien Wong <m@xv97.com>
 2023-08-11 18:16:06 +08:00
Manuel Pégourié-Gonnard
54da1a69a2
Merge pull request #7578 from daverodgman/safer-ct5 
Improve constant-time interface
 2023-08-10 16:57:39 +00:00
Gilles Peskine
e6cb45e68e mbedtls_mpi_exp_mod: remove spurious copy of the output variable 
Clear some confusion between `X` as the output variable and "X" as a name
given to the accumulator. Previous iterations of the code used the variable
`X` as the accumulator, but now that the accumulator is `W[x_index]`, some
of the comments didn't make sense.

Remove the copy of the initial value of `X` into `W[x_index]`, which was
meaningless: the initial value of an output variable should not, and did
not, matter. `W[x_index]` is later overridden unconditionally to take the
value `RR`.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-08-10 15:59:28 +02:00
Dave Rodgman
98ddc01a7c Rename ...if0 to ...else_0 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-08-10 12:11:31 +01:00
Dave Rodgman
b7825ceb3e Rename uint->bool operators to reflect input types 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-08-10 11:58:18 +01:00
Gilles Peskine
b2bc1712a5 Reduce the size of the small primes table used by primality testing 
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-08-10 12:16:02 +02:00
Dave Rodgman
960eca997d code style 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-08-09 20:43:18 +01:00
Dave Rodgman
ebcd78561c Remove redundant code in mbedtls_mpi_cmp_abs 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-08-09 18:57:22 +01:00
Dave Rodgman
fa703e38a2 Use __builtin_ctz to count trailing zeros 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-08-09 18:56:07 +01:00
Dave Rodgman
f3df105b37 Generate smaller code for picking a sign value 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-08-09 18:55:41 +01:00
Dave Rodgman
c98f8d996a
Merge branch 'development' into safer-ct5 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-08-07 11:47:35 +01:00
Dave Rodgman
1d4d944e19
Merge pull request #7933 from tom-cosgrove-arm/add-mbedtls_zeroize_and_free 
Provide and use internal function mbedtls_zeroize_and_free()
 2023-08-03 12:56:21 +00:00
Chien Wong
e2caf4161b
Fix a few unchecked value issue 
Signed-off-by: Chien Wong <m@xv97.com>
 2023-08-01 22:41:17 +08:00
Dave Rodgman
1f39f037bf Improve variable name in mbedtls_mpi_lt_mpi_ct 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-08-01 09:19:16 +01:00
Dave Rodgman
32d726033b Improve comments in mbedtls_mpi_lt_mpi_ct 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-07-31 12:43:23 +01:00
Tom Cosgrove
bc345e8685 Protect macro parameter expansion with parentheses 
Signed-off-by: Tom Cosgrove <tom.cosgrove@arm.com>
 2023-07-25 15:17:39 +01:00
Tom Cosgrove
350226f636 Use a macro for mbedtls_mpi_zeroize_and_free() 
Signed-off-by: Tom Cosgrove <tom.cosgrove@arm.com>
 2023-07-25 15:10:14 +01:00
Dave Rodgman
8e8e6b9be3
Merge pull request #7934 from AgathiyanB/move-declarations-to-top 
Move declarations to top of functions
 2023-07-19 15:25:27 +01:00
Tom Cosgrove
46259f670f Internal function mbedtls_mpi_zeroize() can be mbedtls_mpi_zeroize_and_free() 
Signed-off-by: Tom Cosgrove <tom.cosgrove@arm.com>
 2023-07-18 16:44:14 +01:00
Agathiyan Bragadeesh
c99840ae1f Move declarations in mbedtls_mpi_add_abs to top 
Signed-off-by: Agathiyan Bragadeesh <agathiyan.bragadeesh2@arm.com>
 2023-07-17 12:21:06 +01:00
Gilles Peskine
053022fe24 Reduce the size of mbedtls_mpi 
Reduce the size of mbedtls_mpi from 3 words to 2 on most architectures.

This also reduces the code size significantly in bignum.o and ecp_curves.o,
with negligible variations in other modules.

This removes the ability to set MBEDTLS_MPI_MAX_LIMBS to a value >=65536,
but we don't support customizing this value anyway (it's always 10000).

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-06-29 19:33:44 +02:00
Dave Rodgman
2c76484005 Fix non-opaque use of mbedtls_ct_condition_t 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-05-26 12:42:48 +01:00
Dave Rodgman
2b4486a014 Rename mbedtls_ct_uint_if_new to mbedtls_ct_uint_if 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-05-26 12:42:48 +01:00
Dave Rodgman
cf06acac32 Use new CT interface in mbedtls_mpi_safe_cond_swap 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-05-26 12:42:48 +01:00
Dave Rodgman
ee54faf1cd Update mpi_select to use new CT interface 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-05-26 12:42:48 +01:00
Dave Rodgman
1a7a5626ec Update mbedtls_mpi_lt_mpi_ct to new interface 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-05-26 12:42:48 +01:00
Dave Rodgman
589ccb8aaa Update mbedtls_mpi_safe_cond_(assign|swap) part 2 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-05-26 12:42:48 +01:00
Dave Rodgman
cd2e38b906 Update mbedtls_mpi_safe_cond_(assign|swap) to use new CT interface 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-05-26 12:42:48 +01:00
Dave Rodgman
7d4f019810 Move some bignum functions out of constant_time module 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-05-26 12:42:48 +01:00
Dave Rodgman
68ef1d6ee6 Remove DIY SIZE_MAX definitions 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-05-18 20:49:03 +01:00
Minos Galanakis
0144b35f7d bignum: Updated mbedtls_mpi_shift_l to use the core method. 
Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
 2023-05-16 17:16:26 +01:00
Tom Cosgrove
6af26f3838
Tidy up, remove MPI_CORE(), apply the naming convention, and use the new mbedtls_mpi_core_mul() 
Signed-off-by: Tom Cosgrove <tom.cosgrove@arm.com>
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2023-03-31 16:16:00 +02:00