Parent topic: The Encryption class
XML security classes / The Encryption class

xml.Encryption methods

Methods for the xml.Encryption class.

Table 1. Class methods: Creation
Name Description 
xml.Encryption.Create()
  RETURNING enc xml.Encryption
Constructor of an Encryption object.
Table 2. Class methods: String encryption and decryption
Name Description 
xml.Encryption.EncryptString(
   key xml.CryptoKey,
   str STRING )
  RETURNING rstr STRING
 Encrypts the string str using the symmetric key key, and returns the encrypted string encoded in BASE64. 
xml.Encryption.DecryptString(
   key xml.CryptoKey ,
   str STRING )
  RETURNING rstr STRING
 Decrypts the encrypted string str encoded in BASE64, using the symmetric key key, and returns the string in clear text. 
xml.Encryption.RSAEncrypt(
   key STRING,
   str STRING )
  RETURNING rstr STRING
 Encrypts the string str using the RSA key key and returns it encoded in BASE64. 
xml.Encryption.RSADecrypt(
   key STRING,
   enc STRING )
  RETURNING rstr STRING
 Decrypts the BASE64 encrypted string enc using the RSA key key and returns it in clear text

The methods listed in Table 2 do not belong to the XML encryption specification, but are helper functions to allow 4GL application to encrypt and decrypt short passwords with RSA keys, or big strings by using symmetric keys. Notice that a common way to encrypt data is to use symmetric keys, and to use RSA keys to encrypt the symmetric key value.

Table 3. Object methods: Key and certificate setting
Name Description 
setKey(
   key xml.CryptoKey )
 Assigns a copy of the symmetric key to this Encryption object. 
getEmbeddedKey()
  RETURNING key xml.CryptoKey
 Get a copy of the embedded symmetric key that was used in the last decryption operation. 
setKeyEncryptionKey(
   key xml.CryptoKey )
 Assigns a copy of the key-encryption key to this Encryption object. 
setCertificate(
   cert xml.CryptoX509 )
 Assigns a copy of the X509 certificate to this Encryption object.
Table 4. Object methods: XML elements encryption and decryption
Name Description 
encryptElement(
   node xml.DomNode )
 Encrypts the ELEMENT DomNode node and all its children using the symmetric key. 
decryptElement(
   enc xml.DomNode )
 Decrypts the EncryptedData DomNode enc using the symmetric key. 
encryptElementContent(
   node xml.DomNode )
 Encrypts all child nodes of the ELEMENT DomNode node using the symmetric key. 
decryptElementContent(
   enc xml.DomNode )
 Decrypts the EncryptedData DomNode enc using the symmetric key.
Table 5. Object methods: Detached XML elements encryption and decryption
Name Description 
encryptElementDetached(
   node xml.DomNode )
  RETURNING rnode xml.DomNode
 Encrypts the ELEMENT DomNode node and all its children using the symmetric key, and returns them as one new EncryptedData node. 
decryptElementDetached(
   enc xml.DomNode )
  RETURNING node xml.DomNode
 Decrypts the EncryptedData DomNode enc using the symmetric key, and returns it in a new ELEMENT node 
encryptElementContentDetached(
   node xml.DomNode )
  RETURNING rnode xml.DomNode
 Encrypts all child nodes of the ELEMENT DomNode node using the symmetric key, and returns them as one new EncryptedData node. 
decryptElementContentDetached(
   enc xml.DomNode )
  RETURNING node xml.DomNode
 Decrypts the EncryptedData DomNode enc using the symmetric key, and returns all its children in one new DOCUMENT_FRAGMENT_NODE node.
Table 6. Object methods: Key encryption and decryption
Name Description 
encryptKey(
   key xml.CryptoKey )
  RETURNING doc xml.DomDocument
 Encrypts the given symmetric or HMAC key as an EncryptedKey node and returns it as root node of a new XML document . 
decryptKey(
   xml xml.DomDocument,
   url STRING )
  RETURNING key xml.CryptoKey
 Decrypts the EncryptedKey as root in the given XML document, and returns a new CryptoKey of the given kind.
Parent topic: The Encryption class