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authorDavid Shaw <dshaw@jabberwocky.com>2007-10-26 06:16:42 +0200
committerDavid Shaw <dshaw@jabberwocky.com>2007-10-26 06:16:42 +0200
commit92cc7c2d34eddc08d0b614b2fac9efd6f6321cd9 (patch)
treee4dfea6877845becc9e886b3cbd22d81c7fa7071 /doc/gpg.texi
parentPorted changes from 1.4. (diff)
downloadgnupg2-92cc7c2d34eddc08d0b614b2fac9efd6f6321cd9.tar.xz
gnupg2-92cc7c2d34eddc08d0b614b2fac9efd6f6321cd9.zip
* gpg.texi: Clarify --force-v3-sigs, --pgp2, and --pgp6 a bit.
Diffstat (limited to '')
-rw-r--r--doc/gpg.texi29
1 files changed, 14 insertions, 15 deletions
diff --git a/doc/gpg.texi b/doc/gpg.texi
index 409320a7c..d2814cd1b 100644
--- a/doc/gpg.texi
+++ b/doc/gpg.texi
@@ -1845,16 +1845,15 @@ normally you would use @option{--sign} or @option{--clearsign} to select
the type of the signature.
@end ifset
-
-
@item --force-v3-sigs
@itemx --no-force-v3-sigs
OpenPGP states that an implementation should generate v4 signatures
but PGP versions 5 through 7 only recognize v4 signatures on key
material. This option forces v3 signatures for signatures on data.
-Note that this option overrides @option{--ask-sig-expire}, as v3 signatures
-cannot have expiration dates. @option{--no-force-v3-sigs} disables this
-option.
+Note that this option overrides @option{--ask-sig-expire},
+@option{--sig-policy-url}, @option{--sig-notation}, and
+@option{--sig-keyserver-url}, as these features cannot be used with v3
+signatures. @option{--no-force-v3-sigs} disables this option.
@item --force-v4-certs
@itemx --no-force-v4-certs
@@ -1975,11 +1974,10 @@ a message that PGP 2.x will not be able to handle. Note that `PGP
2.x' here means `MIT PGP 2.6.2'. There are other versions of PGP 2.x
available, but the MIT release is a good common baseline.
-This option implies @option{--rfc1991 --disable-mdc --no-force-v4-certs
---no-sk-comment --escape-from-lines --force-v3-sigs --no-ask-sig-expire
---no-ask-cert-expire --cipher-algo IDEA --digest-algo MD5
---compress-algo 1}. It also disables @option{--textmode} when
-encrypting.
+This option implies @option{--rfc1991 --disable-mdc
+--no-force-v4-certs --no-sk-comment --escape-from-lines
+--force-v3-sigs --cipher-algo IDEA --digest-algo MD5 --compress-algo
+ZIP}. It also disables @option{--textmode} when encrypting.
@item --pgp6
@opindex pgp6
@@ -1991,7 +1989,7 @@ compression algorithms none and ZIP. This also disables
does not understand signatures made by signing subkeys.
This option implies @option{--disable-mdc --no-sk-comment
---escape-from-lines --force-v3-sigs --no-ask-sig-expire}.
+--escape-from-lines --force-v3-sigs}.
@item --pgp7
@opindex pgp7
@@ -2709,10 +2707,11 @@ standard. In particular, GnuPG implements many of the optional parts
of the standard, such as the SHA-512 hash, and the ZLIB and BZIP2
compression algorithms. It is important to be aware that not all
OpenPGP programs implement these optional algorithms and that by
-forcing their use via the @option{--cipher-algo}, @option{--digest-algo},
-@option{--cert-digest-algo}, or @option{--compress-algo} options in GnuPG, it is
-possible to create a perfectly valid OpenPGP message, but one that
-cannot be read by the intended recipient.
+forcing their use via the @option{--cipher-algo},
+@option{--digest-algo}, @option{--cert-digest-algo}, or
+@option{--compress-algo} options in GnuPG, it is possible to create a
+perfectly valid OpenPGP message, but one that cannot be read by the
+intended recipient.
There are dozens of variations of OpenPGP programs available, and each
supports a slightly different subset of these optional algorithms.