949455892f
Remove unused function
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Signed-off-by: Gabor Mezei <gabor.mezei@arm.com >
2021-10-18 17:02:29 +02:00
a2d0f90c5a
Make functions static
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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
a316fc8eb0
Update documentation and comments
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Signed-off-by: Gabor Mezei <gabor.mezei@arm.com >
2021-10-18 16:39:13 +02:00
63bbba5c13
Rename and reorder function parameters
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Signed-off-by: Gabor Mezei <gabor.mezei@arm.com >
2021-10-18 16:39:13 +02:00
7013f62ee5
Use condition for not sensitive data
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Signed-off-by: Gabor Mezei <gabor.mezei@arm.com >
2021-10-18 16:39:13 +02:00
eab90bcc36
Move implementation specific comment
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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
1e64261da5
Make mbedtls_cf_size_mask_lt function static
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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
5b3a32d883
Fix missing includes
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-29 10:53:55 +02:00
90d96cc741
Add documentation for the functions
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 17:07:51 +02:00
b11a56e34c
Unify equality checker functions return value
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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
9cb55698aa
Propagate usage of mask generation functions
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 16:42:19 +02:00
396438c57b
Unify mask generation functions
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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
87ac5bef97
Unify function parameters
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 16:42:16 +02:00
4602564d7a
Unify memcmp functions
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 16:33:47 +02:00
2dcd7686ce
Typo: Unify indentation of function parameters
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 16:33:44 +02:00
fdb71183f8
Move mbedtls_cf_rsaes_pkcs1_v15_unpadding function to the constant-time module
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 16:28:45 +02:00
65cefdbfcb
Create mbedtls_cf_size_if function
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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
c29a3da599
Move mbedtls_mpi_lt_mpi_ct function to the constant-time module
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 16:28:44 +02:00
5c97621215
Move mbedtls_mpi_safe_cond_swap function to the constant-time module
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 16:28:44 +02:00
40a4925128
Move mbedtls_mpi_safe_cond_assign function to the constant-time module
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 16:28:44 +02:00
1349ffde84
Move mbedtls_cf_hmac function to the constant-time module
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 16:28:44 +02:00
0e7f71e1a9
Move mbedtls_cf_memcpy_offset function to the constant-time module
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 16:28:44 +02:00
dee0fd33f1
Move mbedtls_cf_memcpy_if_eq function to the constant-time module
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 16:28:43 +02:00
394aeaaefb
Move mbedtls_cf_mem_move_to_left function to the constant-time module
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 16:28:41 +02:00
be8d98b0be
Move mbedtls_cf_mpi_uint_cond_assign function to the constant-time module
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 16:23:57 +02:00
d3230d533c
Move mbedtls_cf_cond_select_sign function to the constant-time module
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 16:21:10 +02:00
b2dbf2c113
Move mbedtls_cf_uint_if function to the constant-time module
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 16:21:10 +02:00
3f90fd540a
Move mbedtls_cf_mpi_uint_lt function to the constant-time module
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 16:21:10 +02:00
5a85442604
Move mbedtls_cf_size_gt function to the constant-time module
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 16:21:09 +02:00
8d1d5fd204
Move mbedtls_cf_size_bool_eq function to the constant-time module
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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
16fc57bcc4
Move mbedtls_cf_size_mask_ge function to the constant-time module
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 16:16:14 +02:00
c76227d808
Move mbedtls_cf_size_mask_lt function to the constant-time module
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 16:16:14 +02:00
3733bf805a
Move mbedtls_cf_size_mask function to the constant-time module
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 16:16:14 +02:00
340948e4a5
Move mbedtls_cf_uint_mask function to the constant-time module
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 16:16:14 +02:00
db9a38c672
Move contatnt-time memcmp functions to the contant-time module
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-09-28 16:16:14 +02:00
d112534585
Add a new file for constant-time functions
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Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com >
2021-08-11 15:35:28 +02:00
