510     mbedtls_mpi_init(&pt->Z);  in mbedtls_ecp_point_init()
556     mbedtls_mpi_free(&(pt->Z));  in mbedtls_ecp_point_free()
626     MBEDTLS_MPI_CHK(mbedtls_mpi_copy(&P->Z, &Q->Z));  in mbedtls_ecp_copy()
648     MBEDTLS_MPI_CHK(mbedtls_mpi_lset(&pt->Z, 0));  in mbedtls_ecp_set_zero()
659     return mbedtls_mpi_cmp_int(&pt->Z, 0) == 0;  in mbedtls_ecp_is_zero()
670         mbedtls_mpi_cmp_mpi(&P->Z, &Q->Z) == 0) {  in mbedtls_ecp_point_cmp()
686     MBEDTLS_MPI_CHK(mbedtls_mpi_lset(&P->Z, 1));  in mbedtls_ecp_point_read_string()
725         if (mbedtls_mpi_cmp_int(&P->Z, 0) == 0) {  in mbedtls_ecp_point_write_binary()
799         MBEDTLS_MPI_CHK(mbedtls_mpi_lset(&pt->Z, 1));  in mbedtls_ecp_point_read_binary()
817         MBEDTLS_MPI_CHK(mbedtls_mpi_lset(&pt->Z, 1));  in mbedtls_ecp_point_read_binary()
1320     if (MPI_ECP_CMP_INT(&pt->Z, 0) == 0) {  in ecp_normalize_jac()
1337     MPI_ECP_INV(&T,       &pt->Z);            /* T   <-          1 / Z   */  in ecp_normalize_jac()
1343     MPI_ECP_LSET(&pt->Z, 1);  in ecp_normalize_jac()
1394     MPI_ECP_MOV(&c[0], &T[0]->Z);  in ecp_normalize_jac_many()
1396         MPI_ECP_MUL(&c[i], &c[i-1], &T[i]->Z);  in ecp_normalize_jac_many()
1420             MPI_ECP_MUL(&c[i-1], &c[i], &T[i]->Z);  in ecp_normalize_jac_many()
1440         MPI_ECP_LSET(&T[i]->Z, 1);  in ecp_normalize_jac_many()
1512         MPI_ECP_SQR(&tmp[1],  &P->Z);  in ecp_double_jac()
1525             MPI_ECP_SQR(&tmp[1],  &P->Z);  in ecp_double_jac()
1553     MPI_ECP_MUL(&tmp[3],  &P->Y,  &P->Z);  in ecp_double_jac()
1559     MPI_ECP_MOV(&R->Z, &tmp[3]);  in ecp_double_jac()
1611     mbedtls_mpi * const Z = &R->Z;  in ecp_add_mixed()  local
1613     if (!MPI_ECP_VALID(&Q->Z)) {  in ecp_add_mixed()
1620     if (MPI_ECP_CMP_INT(&P->Z, 0) == 0) {  in ecp_add_mixed()
1624     if (MPI_ECP_CMP_INT(&Q->Z, 0) == 0) {  in ecp_add_mixed()
1631     if (MPI_ECP_CMP_INT(&Q->Z, 1) != 0) {  in ecp_add_mixed()
1635     MPI_ECP_SQR(&tmp[0], &P->Z);  in ecp_add_mixed()
1636     MPI_ECP_MUL(&tmp[1], &tmp[0], &P->Z);  in ecp_add_mixed()
1654     MPI_ECP_MUL(Z,        &P->Z,    &tmp[0]);  in ecp_add_mixed()
1706     MPI_ECP_MUL(&pt->Z,   &pt->Z,     &l);  in ecp_randomize_jac()
1992         mbedtls_mpi_free(&T[i].Z);  in ecp_precompute_comb()
2035     MPI_ECP_LSET(&R->Z, 1);  in ecp_select_comb()
2439     MPI_ECP_INV(&P->Z, &P->Z);  in ecp_normalize_mxz()
2440     MPI_ECP_MUL(&P->X, &P->X, &P->Z);  in ecp_normalize_mxz()
2441     MPI_ECP_LSET(&P->Z, 1);  in ecp_normalize_mxz()
2476     MPI_ECP_MUL(&P->Z, &P->Z, &l);  in ecp_randomize_mxz()
2520     MPI_ECP_ADD(&T[0], &P->X,   &P->Z);   /* Pp := PX + PZ                    */  in ecp_double_add_mxz()
2521     MPI_ECP_SUB(&T[1], &P->X,   &P->Z);   /* Pm := PX - PZ                    */  in ecp_double_add_mxz()
2522     MPI_ECP_ADD(&T[2], &Q->X,   &Q->Z);   /* Qp := QX + XZ                    */  in ecp_double_add_mxz()
2523     MPI_ECP_SUB(&T[3], &Q->X,   &Q->Z);   /* Qm := QX - QZ                    */  in ecp_double_add_mxz()
2530     MPI_ECP_MUL(&R->Z, &grp->A, &T[0]);   /* A * (Pp^2 - Pm^2)                */  in ecp_double_add_mxz()
2531     MPI_ECP_ADD(&R->Z, &T[1],   &R->Z);   /* [ A * (Pp^2-Pm^2) ] + Pm^2       */  in ecp_double_add_mxz()
2534     MPI_ECP_SUB(&S->Z, &T[3],   &T[2]);   /* Qm*Pp - Qp*Pm                    */  in ecp_double_add_mxz()
2535     MPI_ECP_SQR(&S->Z, &S->Z);            /* (Qm*Pp - Qp*Pm)^2                */  in ecp_double_add_mxz()
2536     MPI_ECP_MUL(&S->Z, d,       &S->Z);   /* d * ( Qm*Pp - Qp*Pm )^2          */  in ecp_double_add_mxz()
2537     MPI_ECP_MUL(&R->Z, &T[0],   &R->Z);   /* [A*(Pp^2-Pm^2)+Pm^2]*(Pp^2-Pm^2) */  in ecp_double_add_mxz()
2574     MPI_ECP_LSET(&R->Z, 0);  in ecp_mul_mxz()
2595         MPI_ECP_COND_SWAP(&R->Z, &RP.Z, b);  in ecp_mul_mxz()
2598         MPI_ECP_COND_SWAP(&R->Z, &RP.Z, b);  in ecp_mul_mxz()
3035     if (mbedtls_mpi_cmp_int(&pt->Z, 1) != 0) {  in mbedtls_ecp_check_pubkey()
3401         mbedtls_mpi_cmp_mpi(&pub->Q.Z, &prv->Q.Z)) {  in mbedtls_ecp_check_pub_priv()
3416         mbedtls_mpi_cmp_mpi(&Q.Z, &prv->Q.Z)) {  in mbedtls_ecp_check_pub_priv()