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jinyangustc/md5.clj

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Created May 10, 2018 12:02
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Clojure - Calculate MD5 hash of a given string.
Raw
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
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