Miki Tebeka avatar Miki Tebeka committed 6d82d5f

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   (:use [clojure.string :only (split lower-case)])
   (:import (java.security MessageDigest Security)))
 
-; Code "borrowed" from http://www.holygoat.co.uk/blog/entry/2009-03-26-1
 
 (defmulti digest
-  "Returns digest for message with given algorithm"
+  "Returns digest for message with given algorithm."
   (fn [algorithm message] (class message)))
 
 (defmethod digest String [algorithm message]
   (digest algorithm [message]))
 
+; Code "borrowed" from http://www.holygoat.co.uk/blog/entry/2009-03-26-1
 (defmethod digest :default
   [algorithm messages]
   (let [algo (MessageDigest/getInstance algorithm)]
     (.toString (BigInteger. 1 (.digest algo)) 16)))
 
 (defn algorithms []
-  "List support digest algorithms"
+  "List support digest algorithms."
   (let [providers (into [] (Security/getProviders))
         names (mapcat #(enumeration-seq (.keys %)) providers)
         digest-names (filter #(re-find #"MessageDigest\.[A-Z0-9-]+$" %) names)]
     (set (map #(last (split % #"\.")) digest-names))))
 
 (defn- create-fns []
-  "Create utility function for each digest algorithms"
+  "Create utility function for each digest algorithms.
+   For example will create an md5 function for MD5 algorithm."
   (dorun (map #(intern 'digest (symbol (lower-case %)) (partial digest %))
               (algorithms))))
 
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