re = /^30([0-4][0-9a-f])(02([0-2][0-9a-f])(00)?[a-f0-9]{2,64})(02([0-2][0-9a-f])(00)?[a-f0-9]{2,64})(01|02|03|81|82|83)?$/i
str = '304402200e2244c8966e5b1a150f49d0f6bac978a9cfa1c4b32b4cf783c9f7c93be4bc6b022077018e8d6da02ec60f93b3e936fd283aa87beab1c373839616d1ad5a9bc4dcfb'
# Print the match result
str.match(re) do |match|
puts match.to_s
end
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html