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Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
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Dave Rodgman 2023-07-28 16:21:41 +01:00
parent 08691679b5
commit d684d7342b
1 changed files with 7 additions and 7 deletions
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14
library/constant_time.c
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@ -135,13 +135,13 @@ void mbedtls_ct_memmove_left(void *start, size_t total, size_t offset)
size_t hidden_offset = mbedtls_ct_compiler_opaque(offset); size_t hidden_offset = mbedtls_ct_compiler_opaque(offset);
/* During this loop, j will take every value from [0..total) exactly once, /* During this loop, j will take every value from [0..total) exactly once,
* regardless of the value of hidden_offset (it only changes the initial * regardless of the value of hidden_offset (it only changes the initial
* value for j). * value for j).
* *
* For this reason, when testing, it is safe to mark hidden_offset as non-secret. * For this reason, when testing, it is safe to mark hidden_offset as non-secret.
* This prevents the const-flow checkers from generating a false-positive. * This prevents the const-flow checkers from generating a false-positive.
*/ */
TEST_CF_PUBLIC(&hidden_offset, sizeof(hidden_offset)); TEST_CF_PUBLIC(&hidden_offset, sizeof(hidden_offset));
/* Iterate over the array, reading each byte once and writing each byte once. */ /* Iterate over the array, reading each byte once and writing each byte once. */
for (size_t i = 0; i < total; i++) { for (size_t i = 0; i < total; i++) {