Module: Dgen::OutputFile

Defined in:
lib/dgen/outputfile.rb

Overview

OutputFile

Author

Dick Davis

Copyright

Copyright 2015-2018 Dick Davis

License

GNU Public License 3

This module provides the methods that enable saving generated passwords securely to a file.

The encryption algorithm used is Blowfish, developed by Bruce Schneier.

Class Method Summary collapse

Class Method Details

.decrypt(file, key) ⇒ Object

Decrypts a blowfish encrypted file.



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# File 'lib/dgen/outputfile.rb', line 42

def self.decrypt(file, key)
  bf = Crypt::Blowfish.new(key)
  bf.decrypt_file(file.to_s, "decrypted_#{file}")
end

.encrypt(file, key) ⇒ Object

Encrypts a plaintext file using blowfish encryption.



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# File 'lib/dgen/outputfile.rb', line 34

def self.encrypt(file, key)
  bf = Crypt::Blowfish.new(key)
  bf.encrypt_file("plain_#{file}", file.to_s)
  File.delete("plain_#{file}")
end

.open_ofile(file, key) ⇒ Object

Opens a previously saved output file for reading.



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# File 'lib/dgen/outputfile.rb', line 69

def self.open_ofile(file, key)
  decrypt(file, key)
  File.foreach("decrypted_#{file}") do |l|
    puts "Decrypted passphrase: '#{l.chomp}'"
  end
  File.delete("decrypted_#{file}")
end

.save_batch(o_file, key, phrases) ⇒ Object

Saves passphrases to a file.



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# File 'lib/dgen/outputfile.rb', line 58

def self.save_batch(o_file, key, phrases)
  f = File.open("plain_#{o_file}", 'w+')
  phrases.each do |phrase|
    f.write phrase + "\n"
  end
  f.close
  encrypt(o_file, key)
end

.save_pass(o_file, key, phrase) ⇒ Object

Saves passphrase to a file.



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# File 'lib/dgen/outputfile.rb', line 49

def self.save_pass(o_file, key, phrase)
  f = File.open("plain_#{o_file}", 'w+')
  f.puts phrase
  f.close
  encrypt(o_file, key)
end