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-rw-r--r--doc/gpg-agent.texi30
1 files changed, 20 insertions, 10 deletions
diff --git a/doc/gpg-agent.texi b/doc/gpg-agent.texi
index bcce03329..d518c246b 100644
--- a/doc/gpg-agent.texi
+++ b/doc/gpg-agent.texi
@@ -585,16 +585,19 @@ local gpg-agent and use its private keys. This enables decrypting or
signing data on a remote machine without exposing the private keys to the
remote machine.
-@anchor{option --enable-extended-key-format}
@item --enable-extended-key-format
+@itemx --disable-extended-key-format
@opindex enable-extended-key-format
-This option creates keys in the extended private key format. Changing
-the passphrase of a key will also convert the key to that new format.
-Using this option makes the private keys unreadable for gpg-agent
-versions before 2.1.12. The advantage of the extended private key
-format is that it is text based and can carry additional meta data.
-Note that this option also changes the key protection format to use
-OCB mode.
+@opindex disable-extended-key-format
+Since version 2.3 keys are created in the extended private key format.
+Changing the passphrase of a key will also convert the key to that new
+format. This new key format is supported since GnuPG version 2.1.12
+and thus there should be no need to disable it. The disable option
+allows to revert to the old behavior for new keys; be aware that keys
+are never migrated back to the old format. However if the enable
+option has been used the disable option won't have an effect. The
+advantage of the extended private key format is that it is text based
+and can carry additional meta data.
@anchor{option --enable-ssh-support}
@item --enable-ssh-support
@@ -669,12 +672,19 @@ For an heavy loaded gpg-agent with many concurrent connection this
option avoids sign or decrypt errors due to out of secure memory error
returns.
+@item --s2k-calibration @var{milliseconds}
+@opindex s2k-calibration
+Change the default calibration time to @var{milliseconds}. The given
+value is capped at 60 seconds; a value of 0 resets to the compiled-in
+default. This option is re-read on a SIGHUP (or @code{gpgconf
+--reload gpg-agent}) and the S2K count is then re-calibrated.
+
@item --s2k-count @var{n}
@opindex s2k-count
Specify the iteration count used to protect the passphrase. This
option can be used to override the auto-calibration done by default.
-The auto-calibration computes a count which requires 100ms to mangle
-a given passphrase.
+The auto-calibration computes a count which requires by default 100ms
+to mangle a given passphrase. See also @option{--s2k-calibration}.
To view the actually used iteration count and the milliseconds
required for an S2K operation use: