Class: WSS4R::Security::Crypto::SymmetricEncrypter

Inherits:
Object
  • Object
show all
Defined in:
lib/wss4r/security/crypto/cipher.rb

Instance Method Summary collapse

Constructor Details

#initialize(algorithm, key = nil, iv = nil) ⇒ SymmetricEncrypter

Returns a new instance of SymmetricEncrypter.



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# File 'lib/wss4r/security/crypto/cipher.rb', line 6

def initialize(algorithm, key = nil, iv = nil)
  @cipher = Cipher.new(algorithm)
  @algorithm = algorithm
  if (iv == nil)
    @iv = @cipher.random_iv()
  else
    @iv = iv
  end
  if (key == nil)
    @key = @cipher.random_key()
  else
    @key = key
  end
end

Instance Method Details

#decrypt(text) ⇒ Object 



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# File 'lib/wss4r/security/crypto/cipher.rb', line 29

def decrypt(text)
  @cipher.decrypt(@key, @iv)
  @cipher.key = @key
  @cipher.iv = @iv
  cipher = @cipher.update(text[8..-1])
  cipher << @cipher.final()
  cipher    
end

#encrypt_to_b64(text) ⇒ Object 



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# File 'lib/wss4r/security/crypto/cipher.rb', line 21

def encrypt_to_b64(text)
  @cipher.encrypt(@key, @iv)
  @cipher.key = @key
  cipher = @cipher.update(text)
  cipher << @cipher.final()
  Base64.encode64(cipher)
end

#iv ⇒ Object 



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# File 'lib/wss4r/security/crypto/cipher.rb', line 38

def iv()
  @iv
end

#iv_b64 ⇒ Object 



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# File 'lib/wss4r/security/crypto/cipher.rb', line 50

def iv_b64()
  Base64.encode64(@iv)
end

#key ⇒ Object 



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# File 'lib/wss4r/security/crypto/cipher.rb', line 42

def key()
  @key
end

#key=(key) ⇒ Object 



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# File 'lib/wss4r/security/crypto/cipher.rb', line 46

def key=(key)
  @key
end

#key_b64 ⇒ Object 



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# File 'lib/wss4r/security/crypto/cipher.rb', line 54

def key_b64()
  Base64.encode64(@key)
end