fp_import_from_buf
ATTRIBUTE_WARN_UNUSED_RET int fp_import_from_buf(fp_t out_fp, const u8 *buf, u16 buflen);
ret = fp_import_from_buf(&a0, secret->secret, SSS_SECRET_SIZE); EG(ret, err);
ret = fp_import_from_buf(&s, cur_share_i->share, SSS_SECRET_SIZE); EG(ret, err);
ret = fp_import_from_buf(in, buf, buflen);
ret = fp_import_from_buf(&rx, &sig[0], p_len); EG(ret, err);
ret = fp_import_from_buf(rx, &sig[0], p_len); EG(ret, err);
ret = fp_import_from_buf(&rx, &sig[0], p_len); EG(ret, err);
ret = fp_import_from_buf(&rx, r, p_len); EG(ret, err);
ret = fp_import_from_buf(&ry, r + p_len, p_len); EG(ret, err);