MD5 Hash a String

Ruby example to Digest-MD5 hash an XML document.

Download Chilkat Ruby Library

require 'chilkat'

crypt = Chilkat::CkCrypt2.new()

#  Any string argument automatically begins the 30-day trial.
success = crypt.UnlockComponent("30-day trial")
if (success != true)
    print "Crypt component unlock failed" + "\n"
    exit
end

xmlDoc = "<test><a>123</a><b>456</b><c>789</c></test>"

#  This example was created in response to a request to
#  do this:
#  XML-->byte[]-->MD5(byte[])-->Base64(string)

#  The output will be Base64, so set the EncodingMode:
crypt.put_EncodingMode("base64")

#  It is desired to hash bytes.  Depending on the programming
#  language, strings may be Unicode (2 bytes/char).  We don't
#  want to hash Unicode.  By setting the Charset property,
#  we're telling the encryption component to first convert
#  a string to the multibyte charset indicated.
crypt.put_Charset("windows-1252")

#  Set the hash algorithm:
#  Choices are: md5, sha1, sha256, sha384, sha512, md2, haval
crypt.put_HashAlgorithm("md5")

#  Hash the string:
#  Internally, this converts the string to bytes, hashes the bytes,
#  and converts the hash bytes to a Base64 encoded string:

#  Note: Any method in Chilkat Crypt that ends with "ENC" returns the
#  output bytes (i.e. hashed or encrypted) as an encoded string
#  according to the EncodingMode property, which can be "base64",
#  "hex", "url", "quoted-printable", or "html" (for HTML entities).
hashStr = crypt.hashStringENC(xmlDoc)

print hashStr + "\n";