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Document const parameter conventions

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Signed-off-by: Werner Lewis <werner.lewis@arm.com>
This commit is contained in:
Werner Lewis 2022-12-15 16:58:44 +00:00
parent 756a34aadc
commit 6bb49ba121
1 changed files with 4 additions and 2 deletions
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6
library/bignum_mod.h
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@ -10,13 +10,15 @@
* of type #mbedtls_mpi_mod_modulus. The structure must be set up with an
* array of limbs storing the bignum value of the modulus. The modulus must
* be odd and is assumed to have no leading zeroes. The modulus is usually
* named \c N and is usually input-only.
* named \c N and is usually input-only. Functions which take a parameter
* of type \c const #mbedtls_mpi_mod_modulus* must not modify its value.
* - **Bignum parameters**: Bignums are passed as pointers to an array of
* limbs or to a #mbedtls_mpi_mod_residue structure. A limb has the type
* #mbedtls_mpi_uint. Residues must be initialized before use, and must be
* associated with the modulus \c N. Unless otherwise specified:
* - Bignum parameters called \c A, \c B, ... are inputs and are not
* modified by the function.
* modified by the function. Functions which take a parameter of
* type \c const #mbedtls_mpi_mod_residue* must not modify its value.
* - Bignum parameters called \c X, \c Y, ... are outputs or input-output.
* The initial bignum value of output-only parameters is ignored, but
* they must be set up and associated with the modulus \c N. Some