paperback
MultiPar
paperback | MultiPar | |
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18 | 21 | |
1,048 | 893 | |
- | - | |
7.3 | 8.2 | |
6 days ago | 22 days ago | |
Rust | C | |
GNU General Public License v3.0 only | - |
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paperback
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Ask HN: QR Codes Unsuitable for Storing Gigabytes and Beyond in Graphic Format?
Yes. QR codes are meant to store only a few kilobytes at most. They are not suitable for encoding gigabytes of data.
At perhaps 2KB per page, you'd need 524288 pages to store a 1GB. That's 1048 reams. Please just use an archival optical disk instead.
Even if the scheme using multiple QR codes in sequence rather than a single large code block. The paper backup implementations that use QR codes https://github.com/intra2net/paperbackup https://github.com/cyphar/paperback are only meant to be used for private key backup.
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Horcrux: Split your file into encrypted fragments
There's a cool paper-based backup tool that also uses Shamir Secret Sharing to let you distribute a bunch of paper copies to your friends to restore a file optically:
https://github.com/cyphar/paperback
- Paper backup generator suitable for long-term storage
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I need to store a 1MB file for 20 years, would making thousands of copies on a 4.7gb DVD be enough?
Paperback will do it automatically for you, open source and free. Thier README also has recommendations for long term storage of paper.
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PaperAge –easy and secure paper backups of (smallish) secrets
That exists: https://github.com/cyphar/paperback (or the paper-store script suggested by /u/nurupoga/ below).
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converting data into text files
there are ready-made solutions for that, like https://github.com/cyphar/paperback
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My biggest concern about Bitcoin, help ease it for me?
You could encrypt your key info using paperback. This then requires at least X amount of people holding parts of the decrypt key to come together to decrypt your last will.
- Is there a way to create an encryption key, that is calculabe if only 3 of 4 parts are available?
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Man, I feel bad for Ina. Hopefully the EN curse cuts her some slack soon.
I know you're joking but there's actually software that was made just for that
- How to protect your data from an EMP?
MultiPar
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Red Dead Redemption 2 PEDS_10 and rdr3.resident.rpf corrupted files and mismatch
but... depending on how much effort you want to spend fixing it I might be able to fix your current corrupt files, especially if the corrupt files are only mildly corrupt I could create a '.par2' file from mine (assuming you are on build 1436.28), then you would use MultiPar (i.e. https://github.com/Yutaka-Sawada/MultiPar/releases ) to scan your files and it will tell me how many blocks you need to fix it and then I could create recovery data with MultiPar. doing this might dramatically lower the amount of data I would have to upload as then you could use MultiPar which will fix your current corrupt files so they match mine identically.
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WinRAR zero-day exploited since April to hack trading accounts
MultiPar is the continuation for Windows https://github.com/Yutaka-Sawada/MultiPar
And this for Linux https://github.com/animetosho/par2cmdline-turbo
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It‘s been more than 2 years that animetosho plead uploaders to stop RAR‘in their Usenet uploads. What are Your thoughts on this in 2023?
* MultiPar supports in-situ repair, which bypasses this problem entirely
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unRAID Under the premise of Parity Disk, how to specify to rebuild the specified directory or file?
To detect bitrot I use dynamix file integrity plugin, it compute Blake3 hash for each file, it is stored as extend attribute. You Can choose which share will be covered. For correction i then use par2 files using multipar https://hp.vector.co.jp/authors/VA021385/ https://github.com/Yutaka-Sawada/MultiPar (Windows only, par2cmdline for Linux. You could compile from source and add it to unraid if you want, i've done it for testing purpose)
- How does Multi Par works?
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How to ensure file integrity?
And last but not less important - make regular parity files of your healthy important data, and store them somewhere. MultiPar is your best friend. Even if your data gets corrupt, with parity files you can restore it to it's former glory. Some limitations will apply, read the manual.
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Is there a way to quickly create PAR2 files from the Windows context menu?
This is possible with MultiPar https://github.com/Yutaka-Sawada/MultiPar
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I need to store a 1MB file for 20 years, would making thousands of copies on a 4.7gb DVD be enough?
More sanely, perhaps, get some M-Disc DVDs (if you can find real ones - apparently they're becoming just normal DVDs) and put one file on each, and then run https://github.com/Yutaka-Sawada/MultiPar on it to create parity files. Then store the file, the parity files, and the software you need (MultiPar) on the disc. To be safe, you probably also need to store the DVD burner you used to make it, as those are getting thin on the ground these days.
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Best archival medium for 3-10 gig video files?
Note about par2: if one is using a windows system with a nvidia GPU this version of par2 is faster as it speaks CUDA.
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Usenet vs Torrents for more results
For any file repairs use multipar, it's still being updated and has gpu acceleration. https://github.com/Yutaka-Sawada/MultiPar/releases
What are some alternatives?
horcrux - Split your file into encrypted fragments so that you don't need to remember a passcode
dvdisaster - A tool providing additional ECC protection for optical media (unofficial version)
AONT-RS - An implementation of Resch and Plank's AONT-RS (All or Nothing Transform + Reed-Solomon) information dispersal algorithm.
snapraid - A backup program for disk arrays. It stores parity information of your data and it recovers from up to six disk failures
a-search-of-hogwarts - Tool for searching through the 7 Harry Potter books (Potter Search)
ParParGUI - GUI front-end to ParPar, a PAR2 creation tool
clevis - Automated Encryption Framework
Nyuu - Flexible usenet binary posting tool
paper-store - Cold store small files on paper as QR codes -- PGP keys, Bitcoin keys, Tox keys or any other small files in general.
par2cmdline - Official repo for par2cmdline and libpar2
exordia - EXOrDIA
HBBatchBeast - A free GUI application for HandBrake and FFmpeg/FFprobe with an emphasis on batch conversion (including recursive folder scans and folder watching) -Windows, macOS, Linux & Docker