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[M487] Remove mbedtls_internal_ecp_mul in ECP alter. 

MbedTLS doesn't support point multiplication for MBEDTLS_ECP_INTERNAL_ALT acceleration configuration.
pull/5812/head
ccli8 2018-02-06 09:58:36 +08:00
parent df76e297b4
commit 95d4110e31
1 changed files with 0 additions and 41 deletions
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41
features/mbedtls/targets/TARGET_NUVOTON/TARGET_M480/ecp/ecp_internal_alt.c
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@ -337,47 +337,6 @@ cleanup:
}
#endif
/**
* \brief Point multiplication R = m*P, Jacobian coordinates.
*
* \param grp Pointer to the group representing the curve.
*
* \param R Pointer to a point structure to hold the result.
*
* \param m Pointer to MPI by which to multiply P
*
* \param P Pointer to the point that has to be multiplied by m, given with
* Jacobian coordinates.
*
* \return 0 if successful.
*
* \note Currently mbedTLS doesn't open R = m*P API like this.
* It is expected because ECC accelerator can improve it by 30~40 times.
*/
int mbedtls_internal_ecp_mul_jac(mbedtls_ecp_group *grp,
mbedtls_ecp_point *R,
const mbedtls_mpi *m,
const mbedtls_ecp_point *P)
{
int ret;
mbedtls_ecp_point P_;
mbedtls_ecp_point_init(&P_);
/* P_ = normalized P */
MBEDTLS_MPI_CHK(mbedtls_ecp_copy(&P_, P));
MBEDTLS_MPI_CHK(mbedtls_internal_ecp_normalize_jac(grp, &P_));
/* Run ECC point multiplication: R = m*P */
MBEDTLS_MPI_CHK(internal_run_eccop(grp, R, m, &P_, NULL, NULL, ECCOP_POINT_MUL));
cleanup:
mbedtls_ecp_point_free(&P_);
return ret;
}
#if defined(MBEDTLS_ECP_NORMALIZE_JAC_ALT)
/**
* \brief Normalize jacobian coordinates so that Z == 0 || Z == 1.