Trusted certificates in LibreOffice 6.3

2020-02-24 Thread Steve Martin
Hey, I sign my ODF documents with a self-created certificate. I created this certificate by using openSSL. When I open a signed ODT document, I get a message that the signature is valid but the certificate could not be verified. I would like to tell LibreOffice that this certificate can be

XML Schema Definition (XSD) for documentsignatures.xml

2020-02-11 Thread Steve Martin
Hello, In the file documentsignatures.xml the attribute xmlns defines a default namespace for the elements and . There is neither a reference by the attribute xmlns:xsi to the XML Schema Instance (XSI) namespace "http://www.w3.org/2001/XMLSchema-instance; nor a reference by the attribute

Re: Signature process in LibreOffice 6.3

2020-02-07 Thread Steve Martin
Hi Mike, thanks for your fast reply. Note that "Document signatures shall contain a element *for each file within the package*", and the contents of Thumbnails is not listed aming the exceptions. I've understood. The file documentsignatures.xml needs a element for my

Signature process in LibreOffice 6.3

2020-02-07 Thread Steve Martin
Hello, my name is Steve Martin and I am an enrolled student at the Ruhr University Bochum. I have a question regarding the implementation of the signature process in LibreOffice. I use a self-created X.509 certificate for signing my ODT documents. As soon as I sign my ODT document, the file

Re: Randomnes in LibreOffice Encryption

2019-12-10 Thread Steve Martin
Thank's for your fast reply. of course, but if you use an *actual* random function to derive the key from the salt and the password then you'll have trouble decrypting the resulting ciphertext... Why should that be problematic? Randomly generated values ​​(for example, salt or

Randomnes in LibreOffice Encryption

2019-12-10 Thread Steve Martin
Hi, At "http://docs.oasis-open.org/office/v1.2/os/OpenDocument-v1.2-os-part3.html#__RefHeading__752859_826425813; I read: The defined values for the manifest:key-derivation-name attribute are: •PBKDF2: The PBKDF2 key derivation method with HMAC-SHA-1 for the Pseudo-Random Function(PRF).

Re: LibreOffice Encryption/Decryption Implementation

2019-12-06 Thread Steve Martin
Hello Thorsten, thanks for your fast reply :) There's an updated ODF version currently under review; please check whether: https://docs.oasis-open.org/office/OpenDocument/v1.3/csprd02/part2-packages/OpenDocument-v1.3-csprd02-part2-packages.html#__RefHeading__752811_826425813 answers a few of

LibreOffice Encryption/Decryption Implementation

2019-12-05 Thread Steve Martin
Hello, my name is Steve Martin and I am a student at Ruhr University Bochum. I have a few questions regarding the implementation of encryption and decryption process in LibreOffice. I found some informations at: http://docs.oasis-open.org/office/v1.2/os/OpenDocument-v1.2-os-part3.html