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30 commits

Author SHA1 Message Date
Gabor Mezei 2c5ed2244b
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>
 2021-11-11 11:04:52 +01:00
gabor-mezei-arm d5a392aa2c
Fix missing includes 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 11:04:52 +01:00
gabor-mezei-arm 7e6a1eaf8f
Add documentation for the functions 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 11:04:52 +01:00
gabor-mezei-arm 1ffd0ccf02
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 <gabor.mezei@arm.com>
 2021-11-11 11:04:52 +01:00
gabor-mezei-arm 60febd5d8a
Propagate usage of mask generation functions 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 11:04:52 +01:00
gabor-mezei-arm 2f2c0bead3
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 <gabor.mezei@arm.com>
 2021-11-11 11:04:51 +01:00
gabor-mezei-arm 5e4882498e
Unify function parameters 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 11:04:51 +01:00
gabor-mezei-arm 378e7eb5cc
Unify memcmp functions 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 11:04:51 +01:00
gabor-mezei-arm 04087dffcd
Typo: Unify indentation of function parameters 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 11:04:51 +01:00
gabor-mezei-arm f52941ef73
Move mbedtls_cf_rsaes_pkcs1_v15_unpadding function to the constant-time module 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 11:04:51 +01:00
gabor-mezei-arm bc3a288b2c
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 <gabor.mezei@arm.com>
 2021-11-11 11:03:04 +01:00
gabor-mezei-arm b10301d2fc
Move mbedtls_mpi_lt_mpi_ct function to the constant-time module 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 11:02:38 +01:00
gabor-mezei-arm 58fc8a65ab Move mbedtls_mpi_safe_cond_swap function to the constant-time module 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 11:01:08 +01:00
gabor-mezei-arm b8caeeed5c Move mbedtls_mpi_safe_cond_assign function to the constant-time module 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 11:00:14 +01:00
gabor-mezei-arm cb4317b723
Move mbedtls_cf_hmac function to the constant-time module 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 10:59:04 +01:00
gabor-mezei-arm 0f7b9e43e9
Move mbedtls_cf_memcpy_offset function to the constant-time module 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 10:59:04 +01:00
gabor-mezei-arm ee06febbb4
Move mbedtls_cf_memcpy_if_eq function to the constant-time module 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 10:59:04 +01:00
gabor-mezei-arm 7b23c0b46d
Move mbedtls_cf_mem_move_to_left function to the constant-time module 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 10:59:04 +01:00
gabor-mezei-arm 043192d209 Move mbedtls_cf_mpi_uint_cond_assign function to the constant-time module 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 10:55:56 +01:00
gabor-mezei-arm 5cec8b44a8
Move mbedtls_cf_cond_select_sign function to the constant-time module 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 10:54:20 +01:00
gabor-mezei-arm 7533253125
Move mbedtls_cf_uint_if function to the constant-time module 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 10:52:42 +01:00
gabor-mezei-arm 097d4f555e
Move mbedtls_cf_mpi_uint_lt function to the constant-time module 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 10:52:01 +01:00
gabor-mezei-arm 9d7bf09333
Move mbedtls_cf_size_gt function to the constant-time module 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 10:04:49 +01:00
gabor-mezei-arm 96584ddd4b
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 <gabor.mezei@arm.com>
 2021-11-11 10:03:55 +01:00
gabor-mezei-arm a2bcabceb2
Move mbedtls_cf_size_mask_ge function to the constant-time module 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 10:00:17 +01:00
gabor-mezei-arm 4d6b14624e
Move mbedtls_cf_size_mask_lt function to the constant-time module 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 10:00:17 +01:00
gabor-mezei-arm d361ccd663
Move mbedtls_cf_size_mask function to the constant-time module 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 10:00:17 +01:00
gabor-mezei-arm c11cac9f1b
Move mbedtls_cf_uint_mask function to the constant-time module 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 10:00:17 +01:00
gabor-mezei-arm 944c107744
Move contatnt-time memcmp functions to the contant-time module 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 10:00:12 +01:00
gabor-mezei-arm 9055972227
Add a new file for constant-time functions 
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
 2021-11-11 09:39:12 +01:00