diff options
Diffstat (limited to 'lisp')
| -rw-r--r-- | lisp/net/gnutls.el | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/lisp/net/gnutls.el b/lisp/net/gnutls.el index 09df019e2ec..315932b7e69 100644 --- a/lisp/net/gnutls.el +++ b/lisp/net/gnutls.el @@ -47,7 +47,15 @@ (defcustom gnutls-algorithm-priority nil "If non-nil, this should be a TLS priority string. For instance, if you want to skip the \"dhe-rsa\" algorithm, -set this variable to \"normal:-dhe-rsa\"." +set this variable to \"normal:-dhe-rsa\". + +This variable can be useful for modifying low-level TLS +connection parameters (for instance if you need to connect to a +host that only accepts a specific algorithm). However, in +general, Emacs network security is handled by the Network +Security Manager (NSM), and the default value of nil delegates +the job of checking the connection security to the NSM. +See Info node `(emacs) Network Security'." :group 'gnutls :type '(choice (const nil) string)) @@ -73,7 +81,13 @@ flags and the corresponding conditions to be tested are: If the condition test fails, an error will be signaled. If the value of this variable is t, every connection will be subjected -to all of the tests described above." +to all of the tests described above. + +The default value of this variable is nil, which means that no +checks are performed at the gnutls level. Instead the checks are +performed via `open-network-stream' at a higher level by the +Network Security Manager. See Info node `(emacs) Network +Security'." :group 'gnutls :version "24.4" :type '(choice @@ -112,7 +126,14 @@ number with fewer than this number of bits, the handshake is rejected. \(The smaller the prime number, the less secure the key exchange is against man-in-the-middle attacks.) -A value of nil says to use the default GnuTLS value." +A value of nil says to use the default GnuTLS value. + +The default value of this variable is such that virtually any +connection can be established, whether this connection can be +considered cryptographically \"safe\" or not. However, Emacs +network security is handled at a higher level via +`open-network-stream' and the Network Security Manager. See Info +node `(emacs) Network Security'." :type '(choice (const :tag "Use default value" nil) (integer :tag "Number of bits" 512)) :group 'gnutls) |