Search found 74 matches
- Tue Jul 20, 2021 11:44 am
- Forum: General
- Topic: Survey: Advanced Encryption Settings (installer) [Solved]
- Replies: 19
- Views: 1877
Re: Survey: Advanced Encryption Settings (installer) [Solved]
Unlikely I'll ever change the defaults, but I voted "yes" because it's educational to see the options and read the help panel.
- Mon Jun 07, 2021 11:10 pm
- Forum: Security
- Topic: qpdf --encrypt
- Replies: 11
- Views: 1571
Re: qpdf --encrypt
Executive summary of my trip down this rabbit hole :p I hope it's useful to someone. "not secure at all"[1] qpdf --encrypt $pw "" [any key length] -- in.pdf out.pdf "more or less trivially decrypted"[1,4] by brute force (RC4 algorithm, 40-bit key) qpdf --encrypt $pw $pw...
- Sun Jun 06, 2021 12:50 pm
- Forum: Bugs and Non-Package Requests Forum
- Topic: qpdfview won't open 256-bit encrypted pdfs
- Replies: 3
- Views: 865
Re: qpdfview won't open 256-bit encrypted pdfs
I asked "Should qpdfview be able to open files with 256 bit encryption?" at answers.launchpad.net/qpdfview The reply was "It depends on your Poppler version." In antiX 17.4.1_386-base, both evince and qpdfview open test256.pdf. Only 3 poppler items are installed: libpoppler64 and...
- Fri Jun 04, 2021 12:14 am
- Forum: Bugs and Non-Package Requests Forum
- Topic: qpdfview won't open 256-bit encrypted pdfs
- Replies: 3
- Views: 865
- Thu Jun 03, 2021 1:09 pm
- Forum: Bugs and Non-Package Requests Forum
- Topic: qpdfview won't open 256-bit encrypted pdfs
- Replies: 3
- Views: 865
qpdfview won't open 256-bit encrypted pdfs
A pdf encrypted by qpdf with 256-bit encryption won't open in qpdfview or evince in MX-18.3. The same file opens in a browser. qpdf --encrypt $x $x 256 -- test.pdf test256.pdf /usr/bin/qpdfview test256.pdf "Error: Incorrect password" "Error: Incorrect password" vivaldi test256.pd...
- Fri May 28, 2021 7:43 pm
- Forum: Security
- Topic: qpdf --encrypt
- Replies: 11
- Views: 1571
Re: qpdf --encrypt
Regarding encryption of pdf, qpdf maintainer jberkenbilt provided some useful information. I asked if security was comparable for these two cases: qpdf --encrypt $pw1 $pw2 128 --use-aes=y -- doc.pdf encrypted-doc.pdf gpg --symmetric --cipher-algo AES128 doc.pdf He replied that if the --object-stream...
- Sun May 16, 2021 3:10 pm
- Forum: Security
- Topic: qpdf --encrypt
- Replies: 11
- Views: 1571
Re: qpdf --encrypt
Thanks for the ideas. Figueroa, thanks for confirming my observation. Alternate; you can encrypt the file with gpg. Thereby hangs a tale. I agree, gpg would be ideal, and have I tried hard for years to persuade the people I correspond with to love it. But they use it so seldom that it's unreliable t...
- Sun May 16, 2021 1:17 pm
- Forum: Security
- Topic: qpdf --encrypt
- Replies: 11
- Views: 1571
qpdf --encrypt
EDIT: most of my questions and misunderstandings were resolved by qpdf developer Jay Berkenbilt; see post #10 for a summary. I use qpdf to encrypt pdf files for cloud. The 256 key length option seems to be broken. qpdf --encrypt user-password owner-password key-length flags -- infile outfile qpdf -...
- Sun Jan 17, 2021 1:32 pm
- Forum: Older Versions
- Topic: snapshot iso lacks vmlinuz [solved]
- Replies: 17
- Views: 4658
Re: snapshot iso lacks vmlinuz
spot@Pluto:~/ > cat /etc/fstab # Pluggable devices are handled by uDev, they are not in fstab /dev/mapper/rootfs / ext4 defaults,noatime 1 1 # UUID=7c649f35-68ba-4ca9-b8d0-8306f41e0a29 /boot ext4 defaults,noatime 1 1 # UUID=7779-FE2A /boot/efi vfat defaults,noatime,dmask=0002,fmask=0113 0 0 /dev/ma...
- Sun Jan 17, 2021 12:13 am
- Forum: Older Versions
- Topic: snapshot iso lacks vmlinuz [solved]
- Replies: 17
- Views: 4658
Re: snapshot iso lacks vmlinuz
JayM, will do that and report back. spot@Pluto:~/ > ls -l /media/spot/boot total 192944 -rw-r--r-- 1 root root 197461 Feb 24 2018 config-4.14.0-3-amd64 -rw-r--r-- 1 root root 199707 Apr 22 2018 config-4.15.0-1-amd64 -rw-r--r-- 1 root root 206379 Nov 16 2019 config-4.19.0-6-amd64 drwxr-xr-x 2 root ro...