From 0e964631c5e3c3f35f924501f3a2d7a4e6c2129d Mon Sep 17 00:00:00 2001 From: David Shaw Date: Tue, 14 Sep 2004 15:47:17 +0000 Subject: [PATCH] * gpg.sgml: Note that --throw-keyid is --throw-keyids. Note changes in --pgp8. Rephrase the "don't play algorithm games" warning now that PGP has blowfish, zlib, and bzip2. --- doc/ChangeLog | 6 ++++++ doc/gpg.sgml | 60 ++++++++++++++++++++++++--------------------------- 2 files changed, 34 insertions(+), 32 deletions(-) diff --git a/doc/ChangeLog b/doc/ChangeLog index 886d5927d..1a39dc05e 100644 --- a/doc/ChangeLog +++ b/doc/ChangeLog @@ -1,3 +1,9 @@ +2004-09-14 David Shaw + + * gpg.sgml: Note that --throw-keyid is --throw-keyids. Note + changes in --pgp8. Rephrase the "don't play algorithm games" + warning now that PGP has blowfish, zlib, and bzip2. + 2004-08-07 David Shaw * gpg.sgml: Remove show-long-keyids since it is replaced by diff --git a/doc/gpg.sgml b/doc/gpg.sgml index 47a65b44c..227e88be3 100644 --- a/doc/gpg.sgml +++ b/doc/gpg.sgml @@ -1986,18 +1986,14 @@ disables this option. ---throw-keyid +--throw-keyids +--no-throw-keyids -Do not put the keyids into encrypted packets. This option hides the -receiver of the message and is a countermeasure against traffic -analysis. It may slow down the decryption process because all -available secret keys are tried. - - - ---no-throw-keyid - -Resets the --throw-keyid option. +Do not put the recipient keyid into encrypted packets. This option +hides the receiver of the message and is a countermeasure against +traffic analysis. It may slow down the decryption process because all +available secret keys are tried. --no-throw-keyids disables this +option. @@ -2012,7 +2008,6 @@ line, patch files don't have this. A special armor header line tells GnuPG about this cleartext signature option. - --escape-from-lines --no-escape-from-lines @@ -2128,7 +2123,7 @@ Set up all options to be as PGP 6 compliant as possible. This restricts you to the ciphers IDEA (if the IDEA plugin is installed), 3DES, and CAST5, the hashes MD5, SHA1 and RIPEMD160, and the compression algorithms none and ZIP. This also disables ---throw-keyid, and making signatures with signing subkeys as PGP 6 +--throw-keyids, and making signatures with signing subkeys as PGP 6 does not understand signatures made by signing subkeys. This option implies `--disable-mdc --no-sk-comment --escape-from-lines @@ -2149,9 +2144,8 @@ TWOFISH. Set up all options to be as PGP 8 compliant as possible. PGP 8 is a lot closer to the OpenPGP standard than previous versions of PGP, so -all this does is disable --throw-keyid and set --escape-from-lines. -The allowed algorithms list is the same as --pgp7 with the addition of -the SHA-256 digest algorithm. +all this does is disable --throw-keyids and set --escape-from-lines. +All algorithms are allowed except for the SHA384 and SHA512 digests. @@ -2481,10 +2475,11 @@ This is an obsolete option and is not used anywhere. --try-all-secrets -Don't look at the key ID as stored in the message but try all secret keys in -turn to find the right decryption key. This option forces the behaviour as -used by anonymous recipients (created by using --throw-keyid) and might come -handy in case where an encrypted message contains a bogus key ID. +Don't look at the key ID as stored in the message but try all secret +keys in turn to find the right decryption key. This option forces the +behaviour as used by anonymous recipients (created by using +--throw-keyids) and might come handy in case where an encrypted +message contains a bogus key ID. @@ -2860,8 +2855,8 @@ is *very* easy to spy out your passphrase! If you are going to verify detached signatures, make sure that the -program knows about it; either be giving both filenames on the -command line or using - to specify stdin. +program knows about it; either give both filenames on the command line +or use - to specify stdin. @@ -2869,8 +2864,8 @@ command line or using - to specify stdin. INTEROPERABILITY WITH OTHER OPENPGP PROGRAMS GnuPG tries to be a very flexible implementation of the OpenPGP -standard. In particular, GnuPG implements many of the "optional" -parts of the standard, such as the RIPEMD/160 hash, and the ZLIB +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 --cipher-algo, --digest-algo, @@ -2880,14 +2875,15 @@ cannot be read by the intended recipient. -For example, as of this writing, no (unhacked) version of PGP supports -the BLOWFISH cipher algorithm. If you use it, no PGP user will be -able to decrypt your message. The same thing applies to the ZLIB -compression algorithm. By default, GnuPG uses the standard OpenPGP -preferences system that will always do the right thing and create -messages that are usable by all recipients, regardless of which -OpenPGP program they use. Only override this safe default if you know -what you are doing. +There are dozens of variations of OpenPGP programs available, and each +supports a slightly different subset of these optional algorithms. +For example, until recently, no (unhacked) version of PGP supported +the BLOWFISH cipher algorithm. A message using BLOWFISH simply could +not be read by a PGP user. By default, GnuPG uses the standard +OpenPGP preferences system that will always do the right thing and +create messages that are usable by all recipients, regardless of which +OpenPGP program they use. Only override this safe default if you +really know what you are doing.