elasticsearch/logstash — pull request #1632 by cdahlqvist (2014-08-14 10:19:32+00:00)
Title: Added optional base64 and base64url encoding options to fingerprint.

Added a new configuration parameter named `encoding` that allows fingerprint hash values to be created using a more compact base64 encoding in addition to the default hex encoding. Both standard base64 (`base64`) as well as URL and file name safe base64 encoding (`base64url`) are supported.