Hello, mutt supports AES encryption for S/MIME since years. The following patch updates the documentation.
Maybe it's time to change the default of smime_encrypt_with to aes256. CU Michael
diff -r 4a814b05874f contrib/smime.rc --- a/contrib/smime.rc Sun Sep 07 12:00:28 2014 -0700 +++ b/contrib/smime.rc Fri Oct 10 23:52:21 2014 +0200 @@ -59,7 +59,7 @@ # Sction B: Outgoing messages # Algorithm to use for encryption. -# valid choices are rc2-40, rc2-64, rc2-128, des, des3 +# valid choices are aes128, aes192, aes256, rc2-40, rc2-64, rc2-128, des, des3 set smime_encrypt_with="des3" # Encrypt a message. Input file is a MIME entity. diff -r 4a814b05874f init.h --- a/init.h Sun Sep 07 12:00:28 2014 -0700 +++ b/init.h Fri Oct 10 23:52:21 2014 +0200 @@ -2674,7 +2674,7 @@ /* ** .pp ** This sets the algorithm that should be used for encryption. - ** Valid choices are ``des'', ``des3'', ``rc2-40'', ``rc2-64'', ``rc2-128''. + ** Valid choices are ``aes128'', ``aes192'', ``aes256'', ``des'', ``des3'', ``rc2-40'', ``rc2-64'', ``rc2-128''. ** If \fIunset\fP, ``3des'' (TripleDES) is used. ** (S/MIME only) */
