Fonts & Character Sets ⇒ Embed font glyphs in PDF not yet used?

[Anymouse]

Hello,

Using digsig.sty so that after generating my PDF via pdflatex I can then open it in Adobe Reader DC and add a cryptography signature.

That works beautifully, but after adding the signature, the Helvetica font is listed as not embedded.

I use the times package so Helvetica-Bold is embedded but Helvetica regular isn't even used. This is what the PDF looks to pdffonts after being signed:

Code: Select all

name                                 type              encoding         emb sub uni object ID
------------------------------------ ----------------- ---------------- --- --- --- ---------
OPDCNA+Helvetica-Bold                Type 1            Custom           yes yes no     507  0
SNWAPJ+Times-Roman                   Type 1            Custom           yes yes no     510  0
FBRTPL+Times-Italic                  Type 1            Custom           yes yes no     313  0
WQGNAV+SpaceMono-Regular             TrueType          WinAnsi          yes yes no     319  0
AHKNGE+Times-Bold                    Type 1            Custom           yes yes no     315  0
INIYGR+MT2MIT                        Type 1            Builtin          yes yes no     323  0
SHNYRJ+MT2SYT                        Type 1            Builtin          yes yes no     325  0
Helvetica                            Type 1            Custom           no  no  no     328  0

Since I have genuine Helvetica in Type 1 I am wondering if there is a way to trick pdflatex into embedding the subset that the signature will need before it is signed.

Any suggestions?