xml.CryptoKey.CreateDerivedKey

Constructor of an empty CryptoKey object intended to be derived before use, and depending on a url.

Syntax

xml.CryptoKey.CreateDerivedKey(
   url STRING )
  RETURNING object xml.CryptoKey

url defines a key identifier according to the XML-Signature and XML-Encryption specification.

Returns a CryptoKey object or NULL. Only symmetric and HMAC keys can be derived.

In case of error, the method throws an exception and sets the STATUS variable with the appropriate error number.