Module: RCrypto::Encode

Defined in:
lib/RCrypto/encode.rb

Class Method Summary collapse

Class Method Details

.add_fake_token(text) ⇒ Object 



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# File 'lib/RCrypto/encode.rb', line 26

def self.add_fake_token(text)
  fake_token = "$" + SecureRandom.alphanumeric(10)
  insertion_point = SecureRandom.random_number(text.length)
  text.insert(insertion_point, fake_token)
end

.base64_custom_encode(text) ⇒ Object 



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# File 'lib/RCrypto/encode.rb', line 11

def self.base64_custom_encode(text)
  Base64.strict_encode64(text)
end

.caesar_cipher_encrypt(text, shift) ⇒ Object 



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# File 'lib/RCrypto/encode.rb', line 15

def self.caesar_cipher_encrypt(text, shift)
  text.chars.map do |char|
    if char.match(/[a-zA-Z]/)
      base = char =~ /[a-z]/ ? 'a'.ord : 'A'.ord
      ((char.ord - base + shift) % 26 + base).chr
    else
      char
    end
  end.join
end

.xor_encrypt(text, key) ⇒ Object 



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# File 'lib/RCrypto/encode.rb', line 5

def self.xor_encrypt(text, key)
  text.bytes.map.with_index do |byte, i|
    (byte ^ key.bytes[i % key.length]).chr
  end.join
end