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I am new to Linux and I got this message from Ubuntu One (login.ubuntu.com):

First time discharge for the macaroon

From the Account Activity tab (login.ubuntu.com/activity):

Recent accesses made with your account are shown here.

This includes authentication requests made by other sites and devices.
Time/date   Type    IP address  User Agent/Browser
July 28, 2017, 11:12 a.m.   First time discharge for the macaroon   188.230.230.1   snapd/2.25 (series 16; classic) ubuntu/16.04 (amd64) linux/4.10.0-27-generic
July 28, 2017, 11:10 a.m.   New web login       Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/59.0.3071.109 Chrome/59.0.3071.109 Safari/537.36"

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    I will not write this as an answer (because it is NOT), but the answer lies just a Google search away from you... google.com/search?q=macaroon+ubuntu
    – dadexix86
    Jul 28, 2017 at 12:07
  • Thank you dadexix86. I had checked google but at first I kind of missed what I was looking for. I have now found the answer. PS - I have installed ubuntu 3 days ago and I am now learning things about computers which I never heard of before. I am already in love with linux! :)
    – b16108
    Jul 28, 2017 at 13:00
  • 1
    @dadexix86 and now this SE question has taken first place on that Google search results page...
    – Doktor J
    Jul 26, 2019 at 16:37

1 Answer 1

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From Macaroons: Cookies with Contextual Caveats for Decentralized Authorization in the Cloud it seems to be a Google Research Project that:

  • provides more flexible, decentralized cryptographic authorization credentials for Cloud services that support decentralized delegation between principals
  • are based on a construction that uses nested, chained MACs (e.g., HMACs) in a manner that is highly efficient, easy to deploy, and widely applicable.
  • embed caveats that attenuate and contextually confine when, where, by who, and for what purpose a target service should authorize requests.

They are called "Macaroons" because they're a type of "Cookie"

For more information: read the blurb...

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