> > On 06.11.2017 13:20, Zbyszek Żółkiewski wrote: >> >>> Wiadomość napisana przez Aki Tuomi <aki.tu...@dovecot.fi> w dniu >>> 06.11.2017, o godz. 08:44: >>> >>> On 04.11.2017 20:52, Zbyszek Żółkiewski wrote: >>>> Hi, >>>> >>>> I have few questions regarding mail_crypt: >>>> >>>> 1) Is mail_crypt_global_private_key file read upon dovecot start/restart >>>> only or it is/can be read in any other time? I have made few tests by >>>> starting dovecot and removing master key for decryption - therefore it is >>>> not available on the platform - it only reside in memory, removing one of >>>> attack vectors >>> It can be given from config file, or from user database. It is read on >>> use. You can also encrypt the key using a password, but in the end, the >>> password or the key needs to be provided by something. >> >> yes i am loading it in conf file like: >> >> mail_crypt_global_private_key = </etc/dovecot/somefile.key >> >> but then i am removing that file - and it looks like dovecot still is able >> to decrypt mails encrypted with that file. So you are saying there might be >> situation that this file need to be “re-read” from disk ? > Yeah, the file content is loaded into configuration. If you need to > re-read it you need to restart dovecot.
ok thanks, so this is what i wanted to know: so the content of the private key are read on startup and held in memory, and they are only refreshed when dovecot restarts. So in my use-case i can safely remove private key once dovecot started, right ? thanks, _ Zbyszek
