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Subject: [OASIS Issue Tracker] Commented: (OFFICE-2722) ODF 1.2 Part 3 3.4.1Plaintext and Ciphertext Same Size?



    [ http://tools.oasis-open.org/issues/browse/OFFICE-2722?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=22382#action_22382 ] 

Malte Timmermann commented on OFFICE-2722:
------------------------------------------

I support Michael's suggestion...

> ODF 1.2 Part 3 3.4.1 Plaintext and Ciphertext Same Size?
> --------------------------------------------------------
>
>                 Key: OFFICE-2722
>                 URL: http://tools.oasis-open.org/issues/browse/OFFICE-2722
>             Project: OASIS Open Document Format for Office Applications (OpenDocument) TC
>          Issue Type: Bug
>          Components: Packaging, Part 3 (Packages), Security
>    Affects Versions: ODF 1.2 CD 05
>         Environment: This issue applies specifically to section 3.4.1 of ODF 1.2 Part 3 CD01-rev08 and the ODF 1.2 CD05 Part 3 approved form.  The question also applies to ODF 1.0/1.1/IIS 26300. 
>            Reporter: Dennis Hamilton
>            Assignee: Dennis Hamilton
>             Fix For: ODF 1.2 CD 06
>
>
> In the third paragraph of section 3.4.1 on General Encryption provisions, it is stated that the uncompressed file size of the deflated file data (the plaintext) is saved in the corresponding <manifest:file-entry> manifest:size attribute value.  The deflated file data is replaced by the encryption (ciphertext) of the deflated file data, the entry is changed to STORED and the size of the encrypted file is then carried in those places where the file's real size value is carried.
> 1. Why is flagging as STORED asserted for the Zipped file's central directory entry and no other place, although the ciphertext size is placed in all applicable places?
> 2. There is no indication of how the size of the plaintext deflated file is to be recovered.  Is it to be assumed that the ciphertext size is the same as the size of the plaintext deflated size, so there is no need to recover it separately?

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