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Diffusion GnuPG 5df1c247be52

gpg: For de-vs use AES-128 instead of 3DES as implicit preference.

Description

gpg: For de-vs use AES-128 instead of 3DES as implicit preference.

* g10/pkclist.c (select_algo_from_prefs): Change implicit cipher
algorithm.

Although 3DES is still a compliant algorithm, some other software does
not consider it has compliant but also does not set preference
accordingly. Thus it is better to switch the implicit cipher algorithm
similar to what we already did with SHA-1.

Note that in GnuPG 2.3 3DES is already not anymore used here.