There are several good reasons why multiple (cascade) encryption is not necessarily more secure than either algorithm on its own. Moreover, there are examples of situations where cascade encryption provide a false sense of security. Matthew Green posted an articlein 2012 on his website that addresses this issue.
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There are several good reasons why multiple (cascade) encryption is not necessarily more secure than either algorithm on its own. Moreover, there are examples of situations where cascade encryption provide a false sense of security. Matthew Green posted an articlein 2012 on his website that addresses this issue.