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Noteworthy changes in version 1.1.92
-------------------------------------------------
+ * The use of MDCs have increased. A MDC will be used if the
+ recipients directly request it, if the recipients have AES,
+ AES192, AES256, or TWOFISH in their cipher preferences, or if
+ the chosen cipher has a blocksize not equal to 64 bits
+ (currently this is also AES, AES192, AES256, and TWOFISH).
+
+ * GnuPG will no longer automatically disable compression when
+ processing an already-compressed file unless a MDC is being
+ used. This is to give the message a certain amount of
+ resistance to the chosen-ciphertext attack while communicating
+ with other programs (most commonly PGP earlier than version 7.x)
+ that do not support MDCs.
+
* The option --interactive has now the desired effect when
importing keys.