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SourceVuESP-IDF Framework and ExamplesmbedTLSmbedtls_mpi_core_bitlen()

mbedtls_mpi_core_bitlen() function

Return the minimum number of bits required to represent the value held in the MPI.

Syntax

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Summary

Declaration

Definition

from bignum_core.h:135

size_t mbedtls_mpi_core_bitlen(const mbedtls_mpi_uint *A, size_t A_limbs);

Implemented in bignum_core.c:53

Arguments

Argument

Description

The address of the MPI.

A_limbs

The number of limbs of \p A.

Return value

The number of bits in \p A.

Notes

This function returns 0 if all the limbs of \p A are 0.

References

Code

Location

Referrer

size_t mbedtls_mpi_core_bitlen(const mbedtls_mpi_uint *A, size_t A_limbs)

bignum_core.c:53

size_t mbedtls_mpi_core_bitlen(const mbedtls_mpi_uint *A, size_t A_limbs);

bignum_core.h:135

return mbedtls_mpi_core_bitlen(X->p, X->n);

bignum.c:475

mbedtls_mpi_bitlen()

size_t n_bits = mbedtls_mpi_core_bitlen(N, limbs);

bignum_core.c:645

mbedtls_mpi_core_random()

size_t E_bits = mbedtls_mpi_core_bitlen(E, E_limbs);

bignum_core.c:771

exp_mod_calc_first_bit_optionally_safe()

Call Tree

mbedtls_mpi_core_bitlen() is called by 3 functions and calls 1 function:

mbedtls_mpi_core_random()

exp_mod_calc_first_bit_optionally_safe()

mbedtls_mpi_bitlen()

mbedtls_mpi_core_bitlen()

mbedtls_mpi_core_clz()

Data Use

mbedtls_mpi_core_bitlen():

mbedtls_mpi_core_bitlen()

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