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Merge pull request #6777 from tom-cosgrove-arm/issue-6292-mod_inv

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Bignum: Implement high level fixed width modular inversion
This commit is contained in:
Gilles Peskine
2022-12-17 13:26:02 +01:00
committed by GitHub
parent cf86d70162 f723754f6d
commit e162b4725c
15 changed files with 593 additions and 46 deletions
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library/bignum_mod_raw.h
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@@ -258,6 +258,10 @@ void mbedtls_mpi_mod_raw_mul( mbedtls_mpi_uint *X,
* \brief Returns the number of limbs of working memory required for
* a call to `mbedtls_mpi_mod_raw_inv_prime()`.
*
* \note This will always be at least
* `mbedtls_mpi_core_montmul_working_limbs(AN_limbs)`,
* i.e. sufficient for a call to `mbedtls_mpi_core_montmul()`.
*
* \param AN_limbs The number of limbs in the input `A` and the modulus `N`
* (they must be the same size) that will be given to
* `mbedtls_mpi_mod_raw_inv_prime()`.