TW ThomasWaldmann

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stuttgart hackerspace
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ThomasWaldmann commented on issue jborg/attic#213
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Fixed + cleaned up, see PR #214.

ThomasWaldmann opened pull request jborg/attic#214
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cleanup crypto.pyx, make it easier to adapt to other modes
1 commit with 64 additions and 17 deletions
ThomasWaldmann commented on issue jborg/attic#213
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That additionally required buffer space they tell sounds like space needed for padding, IF the cipher uses padding (ctr mode does not). BUT, I thin…

ThomasWaldmann commented on issue jborg/attic#209
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see measurements in PR #207. as there are a lot of factors contributing to backup speed, the faster hash improved speed about 2-3% for me.

ThomasWaldmann commented on pull request jborg/attic#207
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Some measurements with PR #207 code - all tests on local SSD filesystems: --compression=6 --mac=0 (zlib default level 6 + sha256) Duration: 6 minut…

ThomasWaldmann commented on issue jborg/attic#210
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Some measurements with PR #207 code - all tests on local SSD filesystems: --compression=6 --mac=0 (zlib default level 6 + sha256) Duration: 6 minut…

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version number creates wrong impression
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  • TW d3f2b8d
    fix sha512_256 implementation
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  • TW ff542e6
    flexible type header parsing, compression levels, sha256 + sha512_256
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aes-gcm or aes-ocb?
ThomasWaldmann commented on issue jborg/attic#210
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payload currently uses byte0 with values 0x00, 0x01, 0x02 (to give key/enc type). this should be recognized also in future for backwards compatibil…

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where shall parameters get stored?
ThomasWaldmann commented on issue jborg/attic#209
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More data from helpful IRC guy: Raspberry PI, Python 2.7.3, CPU: ARMv6-compatible processor rev 7 (v6l) $ python -m timeit -r 10 -s 'from hashlib i…

ThomasWaldmann commented on issue jborg/attic#209
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Note: attic could use hmac-sha512 or hmac-sha512-256 (truncated to 256bits). Both would be incompatible to old repositories, but with the latter, r…

ThomasWaldmann commented on issue jborg/attic#209
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Just for completeness: if anybody could post values from non-x86/amd64 platforms for 32 and/or 64bit, that would be helpful.

ThomasWaldmann commented on issue jborg/attic#209
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Some 32bit linux, py 2.7.6 values from a helpful guy on IRC: $ python -m timeit -r 10 -s 'from hashlib import new; h = new("sha256"); x=b"foobar"10…

ThomasWaldmann commented on issue jborg/attic#209
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Attic uses hmac-sha256. I did similar measurements for hmac-sha256 and -sha512 and the speed was as shown above. TODO: It would be good if somebody…

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hash performance sha256 vs. sha512
ThomasWaldmann commented on issue jborg/attic#45
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https://gist.github.com/jborg/5e3a948454ac3f8db84d (just as a pointer to the right places in the code)

ThomasWaldmann commented on issue jborg/attic#22
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see PR #208.

ThomasWaldmann opened pull request jborg/attic#208
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stdin and stdout support
2 commits with 38 additions and 6 deletions
ThomasWaldmann commented on issue jborg/attic#186
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@mattgconnor if it "bombs out", can you please show: commandline(s) used the full traceback attic version you use

ThomasWaldmann commented on pull request jborg/attic#156
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maybe also add that info from the last 4 lines of that ML post.

ThomasWaldmann commented on pull request jborg/attic#155
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please merge, see also: from http://librelist.com/browser//attic/2014/1/31/attic-vs-obnam/ : """attic con: repository format not documented"""

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switch from nose to pytest (and pytest-cov), see also #70