* g10/options.h: Add weak_digests linked list to opts.
* g10/main.h: Declare weakhash linked list struct and
additional_weak_digest() function to insert newly-declared weak
digests into opts.
* g10/misc.c: (additional_weak_digest): New function.
(print_digest_algo_note): Check for deprecated digests.
* g10/sig-check.c: (do_check): Reject all weak digests.
* g10/gpg.c: Add --weak-digest option to gpg.
* doc/gpg.texi: Document gpg --weak-digest option.
* g10/gpgv.c: Add --weak-digest option to gpgv.
* doc/gpgv.texi: Document gpgv --weak-digest option.
--
gpg and gpgv treat signatures made over MD5 as unreliable, unless the
user supplies --allow-weak-digests to gpg. Signatures over any other
digest are considered acceptable.
Despite SHA-1 being a mandatory-to-implement digest algorithm in RFC
4880, the collision-resistance of SHA-1 is weaker than anyone would
like it to be.
Some operators of high-value targets that depend on OpenPGP signatures
may wish to require their signers to use a stronger digest algorithm
than SHA1, even if the OpenPGP ecosystem at large cannot deprecate
SHA1 entirely today.
This changeset adds a new "--weak-digest DIGEST" option for both gpg
and gpgv, which makes it straightforward for anyone to treat any
signature or certification made over the specified digest as
unreliable.
This option can be supplied multiple times if the operator wishes to
deprecate multiple digest algorithms, and will be ignored completely
if the operator supplies --allow-weak-digests (as before).
MD5 is always considered weak, regardless of any further
--weak-digest options supplied.
Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
(this is a rough cherry-pick of applying the following commits to
STABLE-BRANCH-1-4:
76afaed65eb98939812a91015d021b
)
* g10/main.h (DEFAULT_CIPHER_ALGO): Change to AES or CAST5 or 3DES
depending on configure options.
* g10/gpg.c (main): Set opt.s2k_cipher_algo to DEFAULT_CIPHER_ALGO.
--
(cherry picked from commit 57df1121c1)
Signed-off-by: Werner Koch <wk@gnupg.org>
* cipher/rsa.c (rsa_sign): Verify after sign.
* g10/gpg.c (opts): Make --no-sig-create-check a NOP.
* g10/options.h (opt): Remove field "no_sig_create_check".
* g10/sign.c (do_sign): Do check only for DSA.
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/openfile.c (open_sigfile): Factor some code out to ...
(get_matching_datafile): new function.
* g10/plaintext.c (hash_datafiles): Do not try to find matching file
in batch mode.
* g10/mainproc.c (check_sig_and_print): Print a warning if a possibly
matching data file is not used by a standard signatures.
--
Allowing to use the abbreviated form for detached signatures is a long
standing bug which has only been noticed by the public with the
release of 2.1.0. :-(
What we do is to remove the ability to check detached signature in
--batch using the one file abbreviated mode. This should exhibit
problems in scripts which use this insecure practice. We also print a
warning if a matching data file exists but was not considered because
the detached signature was actually a standard signature:
gpgv: Good signature from "Werner Koch (dist sig)"
gpgv: WARNING: not a detached signature; \
file 'gnupg-2.1.0.tar.bz2' was NOT verified!
We can only print a warning because it is possible that a standard
signature is indeed to be verified but by coincidence a file with a
matching name is stored alongside the standard signature.
Reported-by: Simon Nicolussi (to gnupg-users on Nov 7)
Signed-off-by: Werner Koch <wk@gnupg.org>
(backported from commit 69384568f6)
Updated doc/gpg.texi.
* g10/options.h (IMPORT_KEEP_OWNERTTRUST): New.
* g10/import.c (parse_import_options): Add "keep-ownertrust".
(import_one): Act upon new option.
--
This option is in particular useful to convert from a pubring.gpg to
the new pubring.kbx in GnuPG 2.1 or vice versa:
gpg1 --export | gpg2 --import-options keep-ownertrust --import
(cherry-picked from commit da95d0d378)
* configure.ac: Added --enable-large-secmem option.
* g10/options.h: Add opt.flags.large_rsa.
* g10/gpg.c: Contingent on configure option: adjust secmem size,
add gpg --enable-large-rsa, bound to opt.flags.large_rsa.
* g10/keygen.c: Adjust max RSA size based on opt.flags.large_rsa
* doc/gpg.texi: Document --enable-large-rsa.
--
Some older implementations built and used RSA keys up to 16Kib, but
the larger secret keys now fail when used by more recent GnuPG, due to
secure memory limitations.
Building with ./configure --enable-large-secmem will make gpg
capable of working with those secret keys, as well as permitting the
use of a new gpg option --enable-large-rsa, which let gpg generate RSA
keys up to 8Kib when used with --batch --gen-key.
Debian-bug-id: 739424
Minor edits by wk.
GnuPG-bug-id: 1732
* doc/Makefile.am (sources_from_trunk): Remove.
(update-source): Make it a dummy.
* doc/gpg.texi: Update.
* doc/yat2m.c: Update.
--
Maintaining 3 versions in of the gpg manual in one file is getting
more complicated with 2.1. Thus we stop this now and keep the manual
for 1.4 separate.
keyserver if no URL is available.
* w32installer.nsi: Added page to select the language.
* mk-w32-dist: Create the opt.ini using the available languages.
USE_GNUPG_ICONV.
(AC_CANONICAL_TARGET): Replaced by AC_CANONICAL_HOST. Changed all
reference to TARGET to HOST. Made sure that i586-mingw32msvc gets
detected as mingw32.
(UNIT64_C): Don't include inttype.h uncoditional but use a test to
ensure that it gets into conftest.h.
(AH_TOP): New. Prevent double inclusion of config.h.
* config.links: Use HOST instead of TARGET.
