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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Hector Martin‏ @marcan42 7 May 2017
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      (1/x) Spain's largest online card processor: * XML inside XML * Signing XML as text: cannot use a real XML parser or the signature breaks

      4 replies 24 retweets 44 likes
    2. Hector Martin‏ @marcan42 7 May 2017
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      Replying to @marcan42

      (2/x) * Using 3DES for no reason * To calculate the HMAC key you need data from *inside* the payload * Their XML namespace isn't a real URL

      2 replies 4 retweets 6 likes
    3. Hector Martin‏ @marcan42 7 May 2017
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      Replying to @marcan42

      (3/x) * Signing key is pre-diversified in a dumb way for no reason, reducing entropy * CBC mode with all-0 IV

      1 reply 4 retweets 7 likes
    4. Hector Martin‏ @marcan42 7 May 2017
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      Replying to @marcan42

      (4/x) * Their reference manual is useless (no mention of modes, IVs, etc): only way to interoperate is to reverse engineer their sample API.

      4 replies 5 retweets 10 likes
    5. Hector Martin‏ @marcan42 7 May 2017
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      Replying to @marcan42

      (5/x) * They have multiple callback mechanisms, but inexplicably the only usable one (positive synchronous confirmation) requires SOAP.

      1 reply 1 retweet 4 likes
    6. Hector Martin‏ @marcan42 7 May 2017
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      Replying to @marcan42

      (6/x) Seriously, this code of theirs. Go on, try to understand it. Input:<Message><Request>...</Request><Signature>...</Signature></Message>pic.twitter.com/ZPM83nGVSe

      3 replies 5 retweets 10 likes
      Hector Martin‏ @marcan42 7 May 2017
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      (7/x) And you know, they *could* use a real XML parser for this part, but why bother.pic.twitter.com/A1ZWzea6tv

      5:02 AM - 7 May 2017
      • 5 Retweets
      • 17 Likes
      • 💖 FlanMaztæ666 💖 Angus Danny van Bruggen Derek Buitenhuis David da Silva Contín i love you AJ Daniel César Rodas
      9 replies 5 retweets 17 likes
        1. New conversation
        1. Gabriel Montclaire‏ @Room_52 7 May 2017
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          Replying to @marcan42

          I feel that this XKCD comic is appropriate at this point:pic.twitter.com/xX4aw5UDBh

          1 reply 6 retweets 9 likes
        2. Hector Martin‏ @marcan42 7 May 2017
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          Replying to @Room_52

          This StackOverflow is: http://stackoverflow.com/questions/1732348/regex-match-open-tags-except-xhtml-self-contained-tags …

          2 replies 3 retweets 6 likes
        3. Show replies
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        2. Hector Martin‏ @marcan42 7 May 2017
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          Replying to @gabboman92

          Yup.

          1 reply 0 retweets 0 likes
          3. End of conversation
        1. José Manuel Díez‏ @jdiezlopez 7 May 2017
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          Replying to @marcan42

          The spanglish variable names are adorable btw. They tried. Gold star.

          0 replies 0 retweets 1 like
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        4. New conversation
        1. Jernej Simončič‏ @jernej__s 7 May 2017
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          Replying to @marcan42

          A few months ago it was found out that the signature application used on Slovenian government sites communicated over HTTP, didn't show …

          1 reply 0 retweets 1 like
        2. Jernej Simončič‏ @jernej__s 7 May 2017
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          Replying to @jernej__s @marcan42

          … what was actually being signed, and in some cases didn't sign the actual document, but just it's ID number.

          1 reply 0 retweets 1 like
        3. Show replies
        1. Giovanni‏ @Der0ad 7 May 2017
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          Replying to @marcan42

          Maybe somebody internally thought that a parser is a bad thing and said, hey let's do it manually.

          0 replies 0 retweets 0 likes
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        1. Philip‏ @oilheap 7 May 2017
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          Replying to @marcan42

          pic.twitter.com/lOwrx73JBj

          0 replies 0 retweets 1 like
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        1. ISMAS un-candadited‏ @IsmasUnleased 8 May 2017
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          Replying to @marcan42

          En realidad el problema es la propia existencia del XML, que no tiene ninguna razón de ser y lleva a desgracias como esta. Entre otras.

          0 replies 0 retweets 0 likes
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