Class: WSS4R::Security::Xml::EncryptedKey

Inherits:
Object
  • Object
show all
Defined in:
lib/wss4r/security/xml/encrypted_key.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(x509security_token = nil, symmetric_encrypter = nil, encrypted_data = nil) ⇒ EncryptedKey

Returns a new instance of EncryptedKey.



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# File 'lib/wss4r/security/xml/encrypted_key.rb', line 8

def initialize(x509security_token=nil, symmetric_encrypter=nil, encrypted_data = nil)
   @x509security_token = x509security_token
   @symmetric_encrypter = symmetric_encrypter
   @encrypted_data = encrypted_data
   @reference_list = nil
end

Instance Attribute Details

#reference_list ⇒ Object (readonly)

Returns the value of attribute reference_list.



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# File 'lib/wss4r/security/xml/encrypted_key.rb', line 6

def reference_list
  @reference_list
end

#symmetric_encrypter ⇒ Object (readonly)

Returns the value of attribute symmetric_encrypter.



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# File 'lib/wss4r/security/xml/encrypted_key.rb', line 6

def symmetric_encrypter
  @symmetric_encrypter
end

#symmetric_key ⇒ Object (readonly)

Returns the value of attribute symmetric_key.



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# File 'lib/wss4r/security/xml/encrypted_key.rb', line 6

def symmetric_key
  @symmetric_key
end

#x509security_token ⇒ Object (readonly)

Returns the value of attribute x509security_token.



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# File 'lib/wss4r/security/xml/encrypted_key.rb', line 6

def x509security_token
  @x509security_token
end

Instance Method Details

#process(document) ⇒ Object 



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# File 'lib/wss4r/security/xml/encrypted_key.rb', line 31

def process(document)
   #Encrypts the symmetric key with the public key from the certificate and add an EncryptedKey element to env:Body/wsse:Security
		#@x509security_token.get_xml(document)
		wsse_security = Security.new()
		wsse_security = wsse_security.process(document)
		security_token = @x509security_token.process(document)

		children = wsse_security.children()
		children.each{|child|
wsse_security.delete(child)
		}		
		wsse_security.add_element(security_token)
		encrypted_key = wsse_security.add_element(Names::ENCRYPTED_KEY)
		children.each{|child|
wsse_security.add_element(child)
		}
   
   encrypted_key.add_namespace("xmlns:xenc", Namespaces::XENC)
   document.add_namespace("xmlns:xenc", Namespaces::XENC)
   encryption_method = encrypted_key.add_element(Names::ENCRYPTION_METHOD)
   encryption_method.add_attribute("Algorithm", Types::ALGORITHM_RSA15)
   key_info = encrypted_key.add_element(Names::KEY_INFO)
		key_info.add_namespace("xmlns:ds",Namespaces::DS)
   security_token_ref = key_info.add_element(Names::SECURITY_TOKEN_REFERENCE)
		reference = security_token_ref.add_element("wsse:Reference")
		
		reference.add_attribute("URI", "#"+@x509security_token.get_id())
		reference.add_attribute("ValueType", "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509v3")
   cipher_data = encrypted_key.add_element(Names::CIPHER_DATA)
   cipher_value = cipher_data.add_element(Names::CIPHER_VALUE)
   cipher_value.text = @x509security_token.public_encrypt_b64(@symmetric_encrypter.key()).gsub("\n","")
   reference_list = encrypted_key.add_element(Names::REFERENCE_LIST)
   data_reference = reference_list.add_element(Names::DATA_REFERENCE)
		data_reference.add_attribute("URI", "#" + @encrypted_data.ref_id())
end

#unprocess(encrypted_key) ⇒ Object 



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# File 'lib/wss4r/security/xml/encrypted_key.rb', line 15

def unprocess(encrypted_key)
		#key_info = SOAPParser.element(encrypted_key, SOAPParser::KEY_INFO)
		algorithm = XPath.first(encrypted_key, "//xenc:EncryptionMethod", {"xenc" => Namespaces::XENC})
		key_info_element = XPath.first(encrypted_key, "ds:KeyInfo", {"ds"=>Namespaces::DS})
		key_info = KeyInfo.new(key_info_element)
   resolver = WSS4R::Security::Security.new().resolver()
   @reference_list = ReferenceList.new(encrypted_key.get_elements("//xenc:ReferenceList")[0])
		private_key = resolver.private_key(key_info.security_token().certificate())
		key_info.security_token().private_key=(private_key)
		
   @x509security_token = key_info.security_token()
		
		cipher_value = XPath.first(encrypted_key, "xenc:CipherData/xenc:CipherValue", {"xenc" => Namespaces::XENC})
   @symmetric_key = @x509security_token.private_decrypt_b64(cipher_value.text())
end