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mbedtls: Override ecp_mul_restartable_internal

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ECDSA verification uses ecp_mul_restartable_internal instead
of the public API mbedtls_ecp_mul_restartable
This commit is contained in:
Sachin Parekh
2022-08-01 14:39:35 +05:30
committed by Laukik Hase
parent 0c60328953
commit 44d626a596
2 changed files with 11 additions and 21 deletions
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21
components/mbedtls/port/ecc/ecc_alt.c
View File

@ -53,40 +53,25 @@ static int esp_mbedtls_ecp_point_multiply(const mbedtls_ecp_group *grp, mbedtls_
return ret;
}
/*
* Restartable multiplication R = m * P
*/
int mbedtls_ecp_mul_restartable( mbedtls_ecp_group *grp, mbedtls_ecp_point *R,
int ecp_mul_restartable_internal( mbedtls_ecp_group *grp, mbedtls_ecp_point *R,
const mbedtls_mpi *m, const mbedtls_ecp_point *P,
int (*f_rng)(void *, unsigned char *, size_t), void *p_rng,
mbedtls_ecp_restart_ctx *rs_ctx )
{
int ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
if (grp->id != MBEDTLS_ECP_DP_SECP192R1 && grp->id != MBEDTLS_ECP_DP_SECP256R1) {
#if defined(MBEDTLS_ECP_MUL_ALT_SOFT_FALLBACK)
return mbedtls_ecp_mul_restartable_soft(grp, R, m, P, f_rng, p_rng, rs_ctx);
return ecp_mul_restartable_internal_soft(grp, R, m, P, f_rng, p_rng, rs_ctx);
#else
return ret;
#endif
}
ECP_VALIDATE_RET( grp != NULL );
ECP_VALIDATE_RET( R != NULL );
ECP_VALIDATE_RET( m != NULL );
ECP_VALIDATE_RET( P != NULL );
/* Common sanity checks */
MBEDTLS_MPI_CHK( mbedtls_ecp_check_privkey( grp, m ) );
MBEDTLS_MPI_CHK( mbedtls_ecp_check_pubkey( grp, P ) );
ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
/* MBEDTLS_MPI_CHK macro assigns the return value of the function to
* `ret` variable
*/
MBEDTLS_MPI_CHK( esp_mbedtls_ecp_point_multiply(grp, R, m, P) );
cleanup:
return( ret );
}
#endif /* defined(MBEDTLS_ECP_MUL_ALT) || defined(MBEDTLS_ECP_MUL_ALT_SOFT_FALLBACK) */
#if defined(MBEDTLS_ECP_VERIFY_ALT) || defined(MBEDTLS_ECP_VERIFY_ALT_SOFT_FALLBACK)

11
components/mbedtls/port/include/mbedtls/ecp.h
View File

@ -12,13 +12,18 @@
extern "C" {
#endif
#if defined(MBEDTLS_ECP_MUL_ALT_SOFT_FALLBACK)
int mbedtls_ecp_mul_restartable_soft(mbedtls_ecp_group *grp, mbedtls_ecp_point *R,
#if defined(MBEDTLS_ECP_MUL_ALT) || defined(MBEDTLS_ECP_MUL_ALT_SOFT_FALLBACK)
int ecp_mul_restartable_internal( mbedtls_ecp_group *grp, mbedtls_ecp_point *R,
const mbedtls_mpi *m, const mbedtls_ecp_point *P,
int (*f_rng)(void *, unsigned char *, size_t), void *p_rng,
mbedtls_ecp_restart_ctx *rs_ctx );
#endif
#if defined(MBEDTLS_ECP_MUL_ALT_SOFT_FALLBACK)
int ecp_mul_restartable_internal_soft( mbedtls_ecp_group *grp, mbedtls_ecp_point *R,
const mbedtls_mpi *m, const mbedtls_ecp_point *P,
int (*f_rng)(void *, unsigned char *, size_t), void *p_rng,
mbedtls_ecp_restart_ctx *rs_ctx );
#endif
#if defined(MBEDTLS_ECP_VERIFY_ALT_SOFT_FALLBACK)