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jizhang/md5.clj

Created December 18, 2012 07:14
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Clojure - Calculate MD5 hash of a given string.
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md5.clj
(import 'java.security.MessageDigest
'java.math.BigInteger)
(defn md5 [s]
(let [algorithm (MessageDigest/getInstance "MD5")
size (* 2 (.getDigestLength algorithm))
raw (.digest algorithm (.getBytes s))
sig (.toString (BigInteger. 1 raw) 16)
padding (apply str (repeat (- size (count sig)) "0"))]
(str padding sig)))
; for full digest support, use clj-digest: https://github.com/tebeka/clj-digest
@aerdnag90
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Is it possible to get back the raw bytes from the md5 String "%032x" format?

Simply doing "f47c75614087a8dd938ba4acff252494".getBytes() does not produce the same result as the digested raw byte[].

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