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Note that (as usual) for mbedtls_mpi_mod_inv() residues must be associated with the modulus

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Signed-off-by: Tom Cosgrove <tom.cosgrove@arm.com>
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Tom Cosgrove 2022-12-14 09:53:45 +00:00
parent dbac60924b
commit d692ba4248
1 changed files with 3 additions and 0 deletions
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library/bignum_mod.h
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@ -196,6 +196,9 @@ int mbedtls_mpi_mod_sub( mbedtls_mpi_mod_residue *X,
/** /**
* \brief Perform modular inversion of an MPI with respect to a modulus \p N. * \brief Perform modular inversion of an MPI with respect to a modulus \p N.
* *
* \p A and \p X must be associated with the modulus \p N and will therefore
* have the same number of limbs as \p N.
*
* \p X may be aliased to \p A. * \p X may be aliased to \p A.
* *
* \warning Currently only supports prime moduli, but does not check for them. * \warning Currently only supports prime moduli, but does not check for them.