XPost: alt.folklore.computers   
   From: invalid@invalid.invalid   
      
   The Natural Philosopher  writes:   
   > On 02/01/2026 21:17, Richard Kettlewell wrote:   
   >> Lawrence D’Oliveiro  writes:   
   >>> Richard Kettlewell wrote:   
   >>>   
   >>>> The need for symmetric encryption systems to include a MAC to   
   >>>> prevent this kind of issue has been understood for a long time.   
   >>>   
   >>> 🏆💯   
   >>>   
   >>> Just want to point out you used the term “symmetric” in the sense in   
   >>> which I think it *should* be used: to refer to encryption systems   
   >>> where the encryption and decryption algorithms are one and the same.   
   >>>   
   >>> Too often the term is used to refer to systems where the same key is   
   >>> used for encryption and decryption -- I think these should more   
   >>> properly be called “secret-key” systems.   
   >> Please stop trolling.   
   >> (For anyone in doubt, symmetric encryption refers to single-key   
   >> encryption schemes, not encryption schemes were encryption and   
   >> decryption are the same operation.)   
   >>   
   > I am surprised you didn't kf him years ago.   
      
   I periodically reset it to see if any of its denizens have given their   
   heads a wobble yet.  Sometimes they have, sometimes they haven’t.   
      
   --   
   https://www.greenend.org.uk/rjk/   
      
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