Random junk I throw together in Clojure.

shrinky-dinky.clj

(def in "5d41402abc4b2a76b9719d911017c592")
(def res "5d:41:40:2a:bc:4b:2a:76:b9:71:9d:91:10:17:c5:92")
; python => ':'.join(a+b for a,b in zip(a[::2], a[1::2]))
; (clojure.string/join ":" (map (fn [x] (clojure.string/join "" x)) (partition 2 s)))
(defn md5 [x] x)
(defn hash-to-fingerprint [k]
  (defn shrink [x] (clojure.string/join "" x))
  (clojure.string/join ":"
                       (map shrink (partition 2 (md5 k)))))
(= (hash-to-fingerprint s) res)