Add licence and copyright information

Authors text was adapted from Möller et al.:

  https://git.glasklar.is/sigsum/core/sigsum-go/-/merge_requests/5

1 files changed, 27 insertions, 0 deletions

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+Authors of onion-csr
+
+The copyright on the onion-csr implementation is held by the respective
+authors (or their organizations/employers).
+
+Unless file-specific copyright headers say otherwise, onion-csr is
+permissively licensed according to the BSD 2-Clause License (see the
+LICENSE file).
+
+This file contains only a summary; for more fine-grained information on
+who authored a particular file or feature, please refer to the version
+control history at:
+
+  https://gitlab.torproject.org/tpo/onion-services/sauteed-onions/onion-csr
+
+For contributions where copyrights are held by an organization, e.g.,
+the author's employer, the copyright holder should be identified by the
+commit, preferably by using an author email address belonging to the
+organization, or otherwise explained in the commit message.
+
+File-specific copyright headers should be used when necessary to
+document the origin of a file's contents, e.g., for code copied from
+other sources, or governed by different license requirements.
+
+Authors, in chronological order of initial contribution:
+
+  Rasmus Dahlberg