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-rw-r--r--doc/gpg-agent.texi9
1 files changed, 9 insertions, 0 deletions
diff --git a/doc/gpg-agent.texi b/doc/gpg-agent.texi
index b72892c2a..ca9d469fd 100644
--- a/doc/gpg-agent.texi
+++ b/doc/gpg-agent.texi
@@ -571,6 +571,15 @@ 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
+@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.
+
@anchor{option --enable-ssh-support}
@item --enable-ssh-support