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54 commits

Author SHA1 Message Date
Neil Armstrong ae57cfd3e7 Use psa_ssl_status_to_mbedtls in PSA version of mbedtls_ct_hmac() 
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
 2022-03-18 10:00:10 +01:00
Neil Armstrong 28d9c631b8 Fix comments in PSA version of mbedtls_ct_hmac() 
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
 2022-03-18 10:00:10 +01:00
Neil Armstrong 6958bd0206 Clean aux_out in PSA version of mbedtls_ct_hmac() 
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
 2022-03-02 15:37:11 +01:00
Neil Armstrong 2968d306e4 Implement mbedtls_ct_hmac() using PSA hash API 
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
 2022-02-25 15:16:50 +01:00
Tautvydas Žilys 40fc7da101 Cap the workaround for mbedtls_mpi_safe_cond_assign on MSVC/ARM64 to MSVC versions prior to 17.1. 
Signed-off-by: Tautvydas Žilys <tautvydas.zilys@gmail.com>
 2022-01-31 13:34:01 -08:00
Tautvydas Žilys 60165d7708 Don't inline mbedtls_mpi_safe_cond_assign on MSVC/ARM64 to avoid a compiler bug. 
Signed-off-by: Tautvydas Žilys <tautvydas.zilys@gmail.com>
 2022-01-26 15:44:10 -08:00
Gabor Mezei a09697527b
Add documentation for the functions 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-26 17:25:14 +01:00
Gabor Mezei 14d5fac11d
Unify function parameters 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-26 17:23:26 +01:00
Gabor Mezei c0d8dda60d
Make mbedtls_ct_uchar_mask_of_range function static 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-26 17:20:36 +01:00
Gabor Mezei 358829abc9
Move mbedtls_ct_base64_dec_value function to the constant-time module 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-26 17:14:52 +01:00
Gabor Mezei 9a4074aa1e
Move mbedtls_ct_base64_enc_char function to the constant-time module 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-26 17:14:21 +01:00
Gabor Mezei 28d611559e
Move mbedtls_ct_uchar_mask_of_range function to the constant-time module 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-26 17:09:38 +01:00
Gabor Mezei 642eeb2879
Fix documentation and comments 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-03 16:13:32 +01:00
Gabor Mezei 22c9a6fccc
Rename internal header constant_time.h to constant_time_internal.h 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-10-20 12:15:20 +02:00
Gabor Mezei 90437e3762
Rename constant-time functions to have mbedtls_ct prefix 
Rename functions to better suite with the module name.

Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-10-20 11:59:27 +02:00
Gabor Mezei 6a426c9f9f
Bind functions' availability for config options 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-10-20 11:17:43 +02:00
Gabor Mezei 765862c4f3
Move mbedtls_cf_memcmp to a new public header 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-10-19 12:22:25 +02:00
Gabor Mezei e212379810
Bind functions' availability for config options 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-10-18 19:38:02 +02:00
Gabor Mezei 949455892f
Remove unused function 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-10-18 17:02:29 +02:00
Gabor Mezei a2d0f90c5a
Make functions static 
These functions are only used as an auxiliary function for constant-time functions.

Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-10-18 16:56:50 +02:00
Gabor Mezei a316fc8eb0
Update documentation and comments 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-10-18 16:39:13 +02:00
Gabor Mezei 63bbba5c13
Rename and reorder function parameters 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-10-18 16:39:13 +02:00
Gabor Mezei 7013f62ee5
Use condition for not sensitive data 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-10-18 16:39:13 +02:00
Gabor Mezei eab90bcc36
Move implementation specific comment 
This comment is about how the functions are implemented, not about their
public interface, so it doesn't belong in the header file.
It applies to everything in constant_time.c so moved there.

Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-10-18 16:39:13 +02:00
Gabor Mezei 1e64261da5
Make mbedtls_cf_size_mask_lt function static 
The mbedtls_cf_size_mask_lt is solely used as an auxiliary function
for mbedtls_cf_size_mask_ge.

Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-10-18 16:39:13 +02:00
gabor-mezei-arm 5b3a32d883
Fix missing includes 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-29 10:53:55 +02:00
gabor-mezei-arm 90d96cc741 Add documentation for the functions 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 17:07:51 +02:00
gabor-mezei-arm b11a56e34c
Unify equality checker functions return value 
The equality checker functions always return 0 or 1 value,
thus the type of return value can be the same dispite of the
size of the parameters.

Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:42:19 +02:00
gabor-mezei-arm 9cb55698aa
Propagate usage of mask generation functions 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:42:19 +02:00
gabor-mezei-arm 396438c57b
Unify mask generation functions 
Generate all-bits 0 or all bits 1 mask from a value instead of from a bit.

Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:42:19 +02:00
gabor-mezei-arm 87ac5bef97 Unify function parameters 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:42:16 +02:00
gabor-mezei-arm 4602564d7a
Unify memcmp functions 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:33:47 +02:00
gabor-mezei-arm 2dcd7686ce Typo: Unify indentation of function parameters 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:33:44 +02:00
gabor-mezei-arm fdb71183f8
Move mbedtls_cf_rsaes_pkcs1_v15_unpadding function to the constant-time module 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:28:45 +02:00
gabor-mezei-arm 65cefdbfcb
Create mbedtls_cf_size_if function 
Add a constant-time function with size_t parameter for choosing
between two integer values, like the ?: ternary operator.

Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:28:44 +02:00
gabor-mezei-arm c29a3da599
Move mbedtls_mpi_lt_mpi_ct function to the constant-time module 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:28:44 +02:00
gabor-mezei-arm 5c97621215
Move mbedtls_mpi_safe_cond_swap function to the constant-time module 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:28:44 +02:00
gabor-mezei-arm 40a4925128
Move mbedtls_mpi_safe_cond_assign function to the constant-time module 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:28:44 +02:00
gabor-mezei-arm 1349ffde84
Move mbedtls_cf_hmac function to the constant-time module 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:28:44 +02:00
gabor-mezei-arm 0e7f71e1a9
Move mbedtls_cf_memcpy_offset function to the constant-time module 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:28:44 +02:00
gabor-mezei-arm dee0fd33f1
Move mbedtls_cf_memcpy_if_eq function to the constant-time module 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:28:43 +02:00
gabor-mezei-arm 394aeaaefb Move mbedtls_cf_mem_move_to_left function to the constant-time module 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:28:41 +02:00
gabor-mezei-arm be8d98b0be Move mbedtls_cf_mpi_uint_cond_assign function to the constant-time module 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:23:57 +02:00
gabor-mezei-arm d3230d533c
Move mbedtls_cf_cond_select_sign function to the constant-time module 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:21:10 +02:00
gabor-mezei-arm b2dbf2c113
Move mbedtls_cf_uint_if function to the constant-time module 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:21:10 +02:00
gabor-mezei-arm 3f90fd540a
Move mbedtls_cf_mpi_uint_lt function to the constant-time module 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:21:10 +02:00
gabor-mezei-arm 5a85442604
Move mbedtls_cf_size_gt function to the constant-time module 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:21:09 +02:00
gabor-mezei-arm 8d1d5fd204 Move mbedtls_cf_size_bool_eq function to the constant-time module 
There were multiple functions called mbedtls_cf_size_bool_eq. They had exactly
the same behavior, so move the one in bignum.c and remove the other.

Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:20:07 +02:00
gabor-mezei-arm 16fc57bcc4
Move mbedtls_cf_size_mask_ge function to the constant-time module 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:16:14 +02:00
gabor-mezei-arm c76227d808
Move mbedtls_cf_size_mask_lt function to the constant-time module 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-09-28 16:16:14 +02:00