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bignum_mod: Adjusted input checking for mbedtls_mpi_mod_residue_setup()
This patch adjusts the logic of the size checking of the method, and refactors the tests. Documentation has also been updated. Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
This commit is contained in:
committed by
Janos Follath
parent
a17ad48e2d
commit
aed832ac16
@ -39,7 +39,7 @@ int mbedtls_mpi_mod_residue_setup( mbedtls_mpi_mod_residue *r,
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mbedtls_mpi_uint *p,
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size_t p_limbs )
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{
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if( p_limbs > m->limbs || !mbedtls_mpi_core_lt_ct( p, m->p, m->limbs ) )
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if( p_limbs > m->limbs || !mbedtls_mpi_core_lt_ct( p, m->p, p_limbs ) )
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return( MBEDTLS_ERR_MPI_BAD_INPUT_DATA );
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r->limbs = m->limbs;
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@ -75,16 +75,17 @@ typedef struct {
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/** Setup a residue structure.
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*
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* \param[out] r The address of residue to setup. The size is determined by
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* \p m.
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* (In particular, it must have at least as many limbs as the
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* modulus \p m.)
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* \param[out] r The address of residue to setup. The resulting structure's
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* size is determined by \p m.
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* \param[in] m The address of the modulus related to \p r.
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* \param[in] p The address of the limb array storing the value of \p r.
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* The memory pointed to by \p p will be used by \p r and must
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* not be modified in any way until after
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* mbedtls_mpi_mod_residue_release() is called.
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* \param p_limbs The number of limbs of \p p.
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* mbedtls_mpi_mod_residue_release() is called. The data
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* pointed by p should be compatible (in terms of size/endianness)
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* with the representation used in \p m.
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* \param p_limbs The number of limbs of \p p. It must have at most as
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* many limbs as the modulus \p m.)
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*
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* \return \c 0 if successful.
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* \return #MBEDTLS_ERR_MPI_BAD_INPUT_DATA if \p p_limbs is less than the
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