Sha256: 2b7b54768f709d4bcc678ea569ae66044b900ca443f03239b0526ffb63ebcc0f
Contents?: true
Size: 1.92 KB
Versions: 13
Compression:
Stored size: 1.92 KB
Contents
module Xmlenc
class EncryptedKey
ALGORITHMS = {
'http://www.w3.org/2001/04/xmlenc#rsa-1_5' => Algorithms::RSA15,
'http://www.w3.org/2001/04/xmlenc#rsa-oaep-mgf1p' => Algorithms::RsaOaepMgf1p
}
def initialize(node)
@node = node
end
def document
@node.document
end
def encryption_method
at_xpath('./xenc:EncryptionMethod')
end
def encrypted_data
EncryptedData.new(referenced_node)
end
def cipher_value
at_xpath('./xenc:CipherData/xenc:CipherValue').content.gsub(/[\n\s]/, '')
end
def cipher_value=(value)
at_xpath('./xenc:CipherData/xenc:CipherValue').content = value
end
def decrypt(key)
decryptor = algorithm.new(key)
decryptor.decrypt(Base64.decode64(cipher_value), :node => encryption_method)
end
def encrypt(key, data)
encryptor = algorithm.new(key)
encrypted = encryptor.encrypt(data, :node => encryption_method)
self.cipher_value = Base64.encode64(encrypted)
end
private
def referenced_node
if reference_uri
document.at_xpath("//xenc:EncryptedData[@Id='#{reference_uri}']", NAMESPACES) ||
raise(Xmlenc::EncryptedDataNotFound.new("Encrypted data not found for: #{reference_uri}"))
else
@node.at_xpath('ancestor::xenc:EncryptedData', Xmlenc::NAMESPACES) ||
raise(Xmlenc::EncryptedDataNotFound.new('Encrypted data not in ancestore element'))
end
end
def reference_uri
if at_xpath('./xenc:ReferenceList/xenc:DataReference')
at_xpath('./xenc:ReferenceList/xenc:DataReference')['URI'][1..-1]
else
nil
end
end
def at_xpath(xpath)
@node.at_xpath(xpath, NAMESPACES)
end
def algorithm
algorithm = encryption_method['Algorithm']
ALGORITHMS[algorithm] ||
raise(UnsupportedError.new("Unsupported encryption method #{algorithm}"))
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems