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raecoo/sha256.scala.md

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Created June 13, 2019 05:46
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sha256 single line function in scala
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sha256.scala.md

def sha256Hash(text: String) : String = java.security.MessageDigest.getInstance("SHA-256").digest(text.getBytes()).map(0xFF & ).map { "%02x".format() }.foldLeft(""){_ + _}

def sha256Hash(text: String) : String = String.format("%064x", new java.math.BigInteger(1, java.security.MessageDigest.getInstance("SHA-256").digest(text.getBytes("UTF-8"))))

verify via:

scala> sha256Hash("Rusty is a cowboy!")
res3: String = e0baa113fe0dd65bc88b4144c6b12c89f362a3617644315b48b36f668f7fa1d6
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