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Add documentation for the functions

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Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
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Gabor Mezei
2021-11-24 16:26:33 +01:00
parent 14d5fac11d
commit a09697527b
3 changed files with 30 additions and 17 deletions
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11
library/constant_time_invasive.h
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@ -31,9 +31,16 @@
#if defined(MBEDTLS_TEST_HOOKS)
/* Return 0xff if low <= c <= high, 0 otherwise.
/** Turn a value into a mask:
* - if \p low <= \p c <= \p high,
* return the all-bits 1 mask, aka (unsigned) -1
* - otherwise, return the all-bits 0 mask, aka 0
*
* Constant flow with respect to c.
* \param low The value to analyze.
* \param high The value to analyze.
* \param c The value to analyze.
*
* \return All-bits-one if \p low <= \p c <= \p high, otherwise zero.
*/
unsigned char mbedtls_ct_uchar_mask_of_range( unsigned char low,
unsigned char high,