[Libreoffice-bugs] [Bug 108294] Adding icon for digital signature

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=108294

--- Comment #5 from Johnny_M <klasse at partyheld.de> ---
(In reply to Heiko Tietze from comment #4)

Actually, the wax seal seems to be the one unambiguously used for the
cryptographic (or secure and reliable in general in earlier times)
authentication. [6][7]

The other listed are usually:
* Checkmark: Spell check (or other document content review)? As already in LO
or Thunderbird. [1]

* Pencil: A signature, but not cryptographic but a textual one at the end of an
e-mail. [2] Or other work on the textual content. (Like the icons of Notepad++,
PDF-XChange Editor, Gedit/Pluma in Gnome/Mate, "Create a new message" button in
Thunderbird [1] or the email composition settings in its preferences [3].)

* Stamp: You probably probably mean a seal (I made the same mistake).
Otherwise, Thunderbird uses a stamp on its "Send" button (meaning "post/mail
the message" I guess). [1]

* Fingerprint: User authentication specifically using a fingerprint? [4][5]

* Barcode: Some very general reference to "encoding", I guess (whatever it may
mean)? I can't think of a close relation to a cryptographic signature. Nor of a
common use for such an icon.

* Handwriting: Same as pencil above? (Often used together.)

* Lock: Encryption (not authentication!) - see, e.g., browser address bar. Or
cryptography in general (whose encryption part used to safeguard information,
and breaking of which is supposedly related to "picking locks"[8] as mindset).
Cryptography includes both, encryption and authentication, but using a lock for
authentication is a very general depiction referring to cryptography in
general.

* Shield: A very broad depiction of "security" (or "safety"). May include
cryptography, but also, e.g., virus scanners and much more (e.g., MS Windows
security settings with its firewall, etc.). And logos of insurance companies
and private security companies - one's got to feel safe behind a shield, right?
:)

It's some thorough discussion about a tiny icon we are having here :)

[1]
https://support.mozilla.org/en-US/kb/sending-and-receiving-messages-thunderbird
[2]
https://support.office.com/en-us/article/Create-and-add-a-signature-to-messages-8ee5d4f4-68fd-464a-a1c1-0e1c80bb27f2
[3]
https://support.mozilla.org/en-US/kb/how-install-and-use-another-language-dictionary-th
[4] https://material.io/guidelines/patterns/fingerprint.html
[5] https://en.wikipedia.org/wiki/Touch_ID
[6]
http://blog.signinghub.com/the-evolution-of-the-signature-from-wax-seal-to-e-signature
[7]
https://www.nottingham.ac.uk/manuscriptsandspecialcollections/researchguidance/medievaldocuments/authentication.aspx
[8] http://www.cryptomuseum.com/covert/lockpick/

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