On 3/04/2015 1:14 am, Robert Deroy wrote: > > Good Morning, > I send you this letter because maybe you can help me about somethings, > i know that my english is not perfect at all.. > > > Is it possible to remake an original gpgconf file ?
There should be a sample gpg.conf file installed to a directory close to the installation directory. The file is called gpg-conf.skel and it is most likely to be in /usr/share/gnupg or /usr/local/share/gnupg. > I don't understand how i could use this commands : > > --default-preference-list string This one sets cipher, hash and compression preferences for a key at the time it is generated. > --list-config > --gpgconf-list > --gpgconf-test I haven't played with these so much, so I'll leave that for someone else to answer. > And how could i use this one ? : > --personal-cipher-preferences string It's related to the first one, but only affects the symmetric cipher used to encrypt files and messages. > Is it possible to set preferences for the gnupg software globally ? It is possible to set a default set of files to be added to a new user's home directory when created, but the recommended method varies by operating system and, in the case of Linux, by distribution. > Or maybe it is possible just for a key especially ? The preferences for any key can be modified by editing the key and updating the algorithms with the setpref command. I am not sure which GUI interfaces permit this, if any, but if that is limited then the most likely one that would allow it is GPA. > Preferences are recorded inside the keys ? Or in the gnupg software ? In the keys, so that GPG can determine which algortithms a recipient can use, though GPG itself needs to have those algorithms included with its installation. For example, the cipher preferences on your key are: Cipher: AES256, AES192, AES, CAST5, 3DES, IDEA On mine they're: Cipher: TWOFISH, CAMELLIA256, AES256, CAMELLIA192, AES192, CAMELLIA128, AES, CAST5, BLOWFISH, IDEA, 3DES If I were to send you an encrypted message, though, GPG would use your preferred cipher, AES256, because that's the first shared preference. > When we generate a new key, preferences of cipher algo or digest > algo are impacting the new key ? Yes, but it can be changed. > I try to set a default user with those commands, but it works not : > --default-key This one is usually best set in a gpg.conf file, often with the --encrypt-to option (to always encrypt messages to your own key). > -u > --local-user These two are interchangable and used to override the default-key for either signing or decryption purposes. > --default-recipient > --default-recipient-self These are alternative methods of always encrypting to a specific key, but are intended for when that key is not the default-key or when the default-key or encrypt-to options are not set. > Is a gnupg portable for linux exist ? There is a GPG4USB project which provides versions for Windows and Linux, but Linux users are much better off using the version which comes with their distribution. > Or maybe i should use wine. No, that adds an additional layer which could very easily be exploited to compromise your information. Regards, Ben
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