diff options
| -rw-r--r-- | source/pdf/pdf-write.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/source/pdf/pdf-write.c b/source/pdf/pdf-write.c index 0580a4d2..f8b6a5d1 100644 --- a/source/pdf/pdf-write.c +++ b/source/pdf/pdf-write.c @@ -2864,6 +2864,23 @@ prepare_for_save(fz_context *ctx, pdf_document *doc, pdf_write_options *in_opts) } static void +change_identity(fz_context *ctx, pdf_document *doc) +{ + pdf_obj *identity = pdf_dict_get(ctx, pdf_trailer(ctx, doc), PDF_NAME_ID); + pdf_obj *str; + unsigned char rnd[16]; + + if (pdf_array_len(ctx, identity) < 2) + return; + + /* Maybe recalculate this in future. For now, just change the second one. */ + fz_memrnd(ctx, rnd, 16); + str = pdf_new_string(ctx, doc, (char *)rnd, 16); + pdf_array_put_drop(ctx, identity, 1, str); + +} + +static void do_pdf_save_document(fz_context *ctx, pdf_document *doc, pdf_write_state *opts, pdf_write_options *in_opts) { int lastfree; @@ -2893,6 +2910,8 @@ do_pdf_save_document(fz_context *ctx, pdf_document *doc, pdf_write_state *opts, { pdf_ensure_solid_xref(ctx, doc, xref_len); preloadobjstms(ctx, doc); + + change_identity(ctx, doc); } /* Sweep & mark objects from the trailer */ |