[jira] [Commented] (PDFBOX-2577) Preflight : no check for "Differences" entry in "Encryption" dictionary

["Tilman Hausherr (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PDFBOX-2577?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14253169#comment-14253169 ] 

Tilman Hausherr commented on PDFBOX-2577:
-----------------------------------------

Is the "Encryption" in the title a typo, i.e. you meant "Encoding"?

> Preflight : no check for "Differences" entry in "Encryption" dictionary
> -----------------------------------------------------------------------
>
>                 Key: PDFBOX-2577
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-2577
>             Project: PDFBox
>          Issue Type: Bug
>          Components: Preflight
>            Reporter: Timur Kamalov
>
> PDF/A-1 spec, subclause 6.3.7 Character encodings
> Due to Technical Corrigendum 2 the entire subclause is replaced with
> All non-symbolic TrueType fonts shall specify MacRomanEncoding or WinAnsiEncoding, either as the value of the Encoding entry in 
> the font dictionary or as the value of the BaseEncoding entry in the dictionary that is the value of the Encoding entry in the font 
> dictionary. If the value of the Encoding entry is a dictionary, it shall not contain a Differences entry. All symbolic TrueType fonts shall 
> not specify an Encoding entry in the font dictionary, and their font programs' “cmap” tables shall contain exactly one encoding.
> PDFBox doesn't perform a check on Differences entry.
> Test case can be isartor-6-3-7-t01-fail-a



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