2004-02-26 Sebastien Pouliot <sebastien@ximian.com>

2004-02-26  Sebastien Pouliot  <sebastien@ximian.com>

	* DES.cs: Same fix as for SymmetricAlgorithm (get_Key is
	overridden to check for weak keys). Also ensured that no weak keys
	would be generated.
	* SymmetricAlgorithm.cs: Return a copy of the key (and IV) so it
	doesn't get destroyed when dispose is called (in this case the key
	zeroization is the caller's responsability). Match MS implementation.
	* TripleDES.cs: Same fix as for SymmetricAlgorithm (get_Key is
	overridden to check for weak keys). Fix bugzilla #54868.

svn path=/trunk/mcs/; revision=23484