couchdb-calculate-session-id

calculates valid CouchDB session IDs using username, salt, secret & timestamp

Example

var calculateSessionId = require('couchdb-calculate-session-id')

var sessionId = calculateSessionId(
  'pat',
  '24eb90e9e1343977b8323857287ffca4',
  '78875068a1979fb910d5d8f37d316aa4',
  1449689785
)

Arguments

Argument	Type	Description
username	String	name property of \_users doc
usersalt	String	salt property of \_users doc
serversecret	String	couch_httpd_auth.secret of CouchDB configuration
timestamp	Number	Number of seconds elapsed since 1 January 1970 00:00:00 UTC

How CouchDB does it using Erlang

make_cookie_hash(UserName, Secret, TimeStamp) ->
    SessionData = UserName ++ ":" ++ erlang:integer_to_list(TimeStamp, 16),
    Hash = crypto:sha_mac(Secret, SessionData),
    couch_util:encodeBase64Url(SessionData ++ ":" ++ ?b2l(Hash)).

Credits

All credits due to @christophwitzko, @indutny & @janl: https://gist.github.com/janl/4583f5eb4c0d8216cc5f

License

Apache-2.0