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SourceVuESP-IDF Framework and ExamplesmbedTLSmbedtls_mpi_core_lt_ct()

mbedtls_mpi_core_lt_ct() function

Check if one unsigned MPI is less than another in constant time.

Syntax

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Summary

Declaration

Definition

from bignum_core.h:176

mbedtls_ct_condition_t mbedtls_mpi_core_lt_ct(const mbedtls_mpi_uint *A, const mbedtls_mpi_uint *B, size_t limbs);

Implemented in bignum_core.c:132

Arguments

Argument

Declared as

Description

const mbedtls_mpi_uint *

The left-hand MPI. This must point to an array of limbs with the same allocated length as \p B.

const mbedtls_mpi_uint *

The right-hand MPI. This must point to an array of limbs with the same allocated length as \p A.

limbs

size_t

The number of limbs in \p A and \p B. This must not be 0.

Return value

MBEDTLS_CT_TRUE if \p A is less than \p B. MBEDTLS_CT_FALSE if \p A is greater than or equal to \p B.

References

Code

Location

Referrer

mbedtls_ct_condition_t mbedtls_mpi_core_lt_ct(const mbedtls_mpi_uint *A,

bignum_core.c:132

mbedtls_ct_condition_t mbedtls_mpi_core_lt_ct(const mbedtls_mpi_uint *A,

bignum_core.h:176

mbedtls_ct_condition_t lt = mbedtls_mpi_core_lt_ct(p[i], p[i ^ 1], X->n);

bignum.c:91

mbedtls_mpi_lt_mpi_ct()

lt_upper = mbedtls_mpi_core_lt_ct(X, N, limbs);

bignum_core.c:688

mbedtls_mpi_core_random()

Call Tree

mbedtls_mpi_core_lt_ct() is called by 2 functions and calls 5 functions:

mbedtls_mpi_core_random()

mbedtls_mpi_lt_mpi_ct()

mbedtls_mpi_core_lt_ct()

mbedtls_ct_bool_or()

mbedtls_ct_bool_not()

mbedtls_ct_uint_lt()

mbedtls_ct_compiler_opaque()

mbedtls_ct_bool_and()

Data Use

mbedtls_mpi_core_lt_ct():

mbedtls_mpi_core_lt_ct()

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