• Dengler, Gabriel via Exim-users [2022-11-23 01:16]: > Hello everyone, > > I want to store the incoming e-mails using the Maildir file format encrypted > by using some symmetric encryption using the user's password (e.g., AES). So > in the end, Exim should write the encrypted files directly on the disk. > Furthermore, it would be convenient if the actual password is solely > persistent saved as a hash (for checking at authentication), the real > password - and therefore the en-/decryption key - is only temporarily > available during the login session.
Why do you have Exim to make this? Why not use Dovecot's delivery facilities to make Dovecot encrypt and store in Maildir? https://doc.dovecot.org/configuration_manual/mail_crypt_plugin/#functional-overview > Therefore, I wanted to modify the Exim source code directly but was > confronted with a large amount of code, e.g., the differentiation between > the different transport types or the many cases considered in the appendfile > protocol. So I have some questions, where you might help me in the "big > picture": > * How to enforce that a user has to authenticate him-/herself with a > password? > * Where is a good point of "grabbing out" the password from the user and how > to "carry" it to the point where the encryption happens? > * Where is a good point to add the encryption, e.g., by modifying the > transport_instance block or directly before the file is written? > > Thanks for your help in advance! > > Best regards, > > Gabriel > > -- > ## List details at https://lists.exim.org/mailman/listinfo/exim-users > ## Exim details at http://www.exim.org/ > ## Please use the Wiki with this list - http://wiki.exim.org/ -- -- Kirill Miazine <k...@krot.org> -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
