* agent/divert-scd.c (divert_pkdecrypt): Support ECDH.
* scd/app-openpgp.c (get_algo_byte, store_fpr): Support ECDH.
(send_key_attr): Support ECDH. Fix EdDSA algorithm value.
(retrieve_key_material): Initialize fields.
(get_public_key, ecc_writekey, do_writekey): Support ECDH.
(ecdh_writekey): Remove.
(do_decipher): Support ECDH.
(parse_algorithm_attribute): Support ECDH. Fix EdDSA.
--
Following the gpg-agent protocol, SCDaemon's counter part is now
implemented.
* agent/gpg-agent.c (finalize_rereadable_options): New.
(main, reread_configuration): Call it.
--
This change should help to avoid surprising behaviour.
Signed-off-by: Werner Koch <wk@gnupg.org>
* agent/command-ssh.c (setup_ssh_env): Move code to ...
* agent/gpg-agent.c (agent_copy_startup_env): .. new function. Change
calllers.
* agent/command.c (start_command_handler): Call that fucntion for
restricted connections.
--
A remote connection is and should not be able to setup the local
session environment. However, unless --keep-display is used we would
be left without an environment and thus pinentry can't be used. The
fix is the same as used for ssh-agent connection: We use the default
environment as used at the startup of the agent.
Signed-off-by: Werner Koch <wk@gnupg.org>
* agent/command.c (cmd_learn): Add option --sendinfo.
* agent/learncard.c (agent_handle_learn): Add arg "send" andsend
certifciate only if that is set.
* g10/call-agent.c (agent_scd_learn): Use --sendinfo. Make INFO
optional.
(agent_learn): Remove.
* g10/keygen.c (gen_card_key): Replace agent_learn by agent_scd_learn.
--
The requirement of using --card-status on the first use of card on a
new box is a bit annoying but the alternative of always checking
whether a card is available before a decryption starts does not sound
promising either.
Signed-off-by: Werner Koch <wk@gnupg.org>
* scd/scdaemon.c (ENAMETOOLONG): New.
(redir_socket_name): New.
(cleanup): Take care of a redirected socket.
(main): Pass redir_socket_name to create_server_socket.
(create_socket_name): Remove superfluous length check.
(create_server_socket): Add arg r_redir_name and implement
redirection. Replace assert for older Assuan by an error message.
Signed-off-by: Werner Koch <wk@gnupg.org>
* agent/gpg-agent.c (ENAMETOOLONG): New.
(redir_socket_name, redir_socket_name_extra)
(redir_socket_name_ssh): New.
(remove_socket): Take care of the redir names.
(main): Pass the redir names to create_server_socket.
(create_socket_name): Remove length check - that is anyway done later.
(create_server_socket): Add arg r_redir_name and implement redirection
if Libassuan is at least 2.14.
* agent/agent.h (opt): Add field extra_socket.
(server_control_s): Add field restricted.
* agent/command.c: Check restricted flag on many commands.
* agent/gpg-agent.c (oExtraSocket): New.
(opts): Add option --extra-socket.
(socket_name_extra): New.
(cleanup): Cleanup that socket name.
(main): Implement oExtraSocket.
(create_socket_name): Add arg homedir and change all callers.
(create_server_socket): Rename arg is_ssh to primary and change
callers.
(start_connection_thread): Take ctrl as arg.
(start_connection_thread_std): New.
(start_connection_thread_extra): New.
(handle_connections): Add arg listen_fd_extra and replace the
connection starting code by parameterized loop.
* common/asshelp.c (start_new_gpg_agent): Detect the use of the
restricted mode and don't fail on sending the pinentry environment.
* common/util.h (GPG_ERR_FORBIDDEN): New.
* gl/: Remove entire tree.
* configure.ac: Remove gnulib tests and the gl/ Makefile.
(setenv): Add to AC_CHECK_FUNCS.
* autogen.rc (extra_aclocal_flags): Set to empty.
* Makefile.am (ACLOCAL_AMFLAGS): Remove -I gl/m4
(SUBDIRS): Remove gl/.
* agent/Makefile.am (common_libs): Remove ../gl/gnulib.a
* common/Makefile.am (t_common_ldadd): Ditto.
* dirmngr/Makefile.am (dirmngr_LDADD): Ditto.
(dirmngr_ldap_LDADD, dirmngr_client_LDADD): Ditto.
* g10/Makefile.am (needed_libs): Ditto.
* g13/Makefile.am (g13_LDADD): Ditto.
* kbx/Makefile.am (kbxutil_LDADD): Ditto.
($(PROGRAMS)): Ditto.
* scd/Makefile.am (scdaemon_LDADD): Ditto.
* sm/Makefile.am (common_libs): Ditto.
* tools/Makefile.am (common_libs, commonpth_libs): Ditto.
* agent/gpg-agent.c: Remove "mkdtemp.h"
* g10/exec.c: Ditto.
* scd/scdaemon.c: Ditto.
* tools/symcryptrun.c: Ditto.
* common/sysutils.c: Remove "setenv.h"
* common/t-timestuff.c: Use putenv if setenv is not available.
--
gnulib has always been a cause of trouble in GnuPG because we used
only a very few functions and the complex include machinery of gnulib
is quite complex and the cause for many build problems for example on
OS X. This is not gnulib's fault but due to our limited use of gnulib
and that we only rarely update the gnulib code to avoid regressions.
In part two we will address the functions
mkdtemp
setenv
unsetenv
strpbrk
which may bot be implemented on all platforms. They are not required
on a libc based system.
Signed-off-by: Werner Koch <wk@gnupg.org>
--
Also fixed some of my own copyright notices due to the termination of
my assignment. The one displayed by --version is kept at FSF because
we had contributors in 2014 with FSF assignments and it gives the FSF
some visibility.
* agent/command.c (cmd_export_key): Actually implement the cache_nonce
feature.
* g10/export.c (do_export_stream): Make use of a cache_nonce.
Signed-off-by: Werner Koch <wk@gnupg.org>
* agent/gpg-agent.c (oDebugQuickRandom): New.
(opts): New option --debug-quick-random.
(main): Use new option.
* common/asshelp.c (start_new_gpg_agent): Add hack to pass an
additional argument for the agent name.
* tests/openpgp/defs.inc: Pass --debug-quick-random to the gpg-agent
starting parameters.
* tests/openpgp/version.test: Ditto.
Signed-off-by: Werner Koch <wk@gnupg.org>
* agent/agent.h (struct pin_entry_info_s): Add fields repeat_okay and
with_repeat.
* agent/call-pinentry.c (close_button_status_cb): Rewrite and check
for PIN_REPEAT. Change users to check only the relevant bit.
(agent_askpin): Support repeat logic of new Pinentries.
* agent/command-ssh.c (ssh_identity_register): Use the new repeat
feature.
* agent/genkey.c (agent_ask_new_passphrase): Ditto.
--
If we need to confirm a passphrase entry (e.g. for new passphrase) we
set a flag into the pinentry info block. The we try to use the new
pinentry command SETREPEATERROR; if that fails, we continue as usual.
If that succeeds we ask the pinentry to show the repeat (confirmation)
prompt and on successful return we set another flag in the pinentry
info block so that the caller can skip its own confirmation check. A
new status line from the pinentry indicates that the feature is
actually supported (it may not be supported on certain systems for
example when using the ncurses backend).
Signed-off-by: Werner Koch <wk@gnupg.org>
* agent/agent.h (opt): Remove field use_standard_socket.
* agent/command.c (cmd_killagent): Always allow killing.
* agent/gpg-agent.c (main): Turn --{no,}use-standard-socket and
--write-env-file into dummy options. Always return true for
--use-standard-socket-p. Do not print the GPG_AGENT_INFO envvar
setting or set that envvar.
(create_socket_name): Simplify by removing non standard socket
support.
(check_for_running_agent): Ditto.
* common/asshelp.c (start_new_gpg_agent): Remove GPG_AGENT_INFO use.
* common/simple-pwquery.c (agent_open): Ditto.
* configure.ac (GPG_AGENT_INFO_NAME): Remove.
* g10/server.c (gpg_server): Do not print the AgentInfo comment.
* g13/server.c (g13_server): Ditto.
* sm/server.c (gpgsm_server): Ditto.
* tools/gpgconf.c (main): Simplify by removing non standard socket
support.
--
The indented fix to allow using a different socket than the one in the
gnupg home directory is to change Libassuan to check whether the
socket files exists as a regualr file with a special keyword to
redirect to another socket file name.
* agent/cache.c (last_stored_cache_key): New.
(agent_get_cache): Allow NULL for KEY.
(agent_store_cache_hit): New.
* agent/findkey.c (unprotect): Call new function and try to use the
last stored key.
* g10/revoke.c (create_revocation): Add arg CACHE_NONCE and pass to
make_keysig_packet.
(gen_standard_revoke): Add arg CACHE_NONCE and pass to
create_revocation.
* g10/keygen.c (do_generate_keypair): Call gen_standard_revoke with
cache nonce.
--
This patch adds two features:
1. The key for the last passphrase successfully used for unprotecting
a key is stored away. On a cache miss the stored away passphrase is
tried as well. This helps for the common GPG use case of having a
signing and encryption (sub)key with the same passphrase. See the
code for more comments.
2. The now auto-generated revocation certificate does not anymore
popup a passphrase prompt. Thus for standard key generation the
passphrase needs to be given only once (well, two with the
confirmation).
* agent/cvt-openpgp.c (get_keygrip): Special case EdDSA.
(convert_secret_key): Ditto.
(convert_transfer_key): Ditto.
(apply_protection): Handle opaque MPIs.
(do_unprotect): Check FLAG_OPAQUE instead of FLAG_USER1 before
unpacking an opaque mpi.
--
The key transfer protocol between gpg and gpg-agent uses gcrypt
algorithm numbers which merge all ECC algorithms into one. Thus it is
not possible to use the algorithm number to determine the EdDSA
algorithm. We need to known that because Libgcrypt requires the
"eddsa" flag with the curve "Ed25519" to actually use the Ed25519
signature specification.
The last fix is for correctness; the first case won't be used anyway.
* agent/protect.c (PROT_CIPHER): Rename to GCRY_CIPHER_AES128 for
clarity.
(do_decryption): Add args prot_cipher and prot_cipher_keylen. USe
them instead of the hardwired values.
(agent_unprotect): Change to use a table of protection algorithms.
Add AES-256 variant.
--
This patch will make a possible future key protection algorithm
changes smoother. AES-256 is also allowed although there is currently
no way to encrypt using it.
* agent/cvt-openpgp.c (convert_to_openpgp): Use the curve name instead
of the curve parameters.
* g10/export.c (canon_pubkey_algo): Rename to ...
(canon_pk_algo): this. Support ECC.
(transfer_format_to_openpgp): Expect curve name.
* agent/cvt-openpgp.c (do_unprotect): Return an s-exp also for
non-protected keys.
(convert_from_openpgp_main): Do not call agent_askpin for a
non-protected key.
* agent/cvt-openpgp.c (try_do_unprotect_arg_s): Add field "curve".
(get_keygrip): Add and use arg CURVE.
(convert_secret_key): Ditto.
(convert_transfer_key): Ditto.
(get_npkey_nskey): New.
(prepare_unprotect): Replace gcrypt functions by
get_npkey_nskey. Allow opaque MPIs.
(do_unprotect): Use CURVE instead of parameters.
(convert_from_openpgp_main): Ditto.
(convert_to_openpgp): Simplify.
* g10/import.c (one_mpi_from_pkey): Remove.
(transfer_secret_keys): Rewrite to use the curve instead of the
parameters.
* g10/parse-packet.c (parse_key): Mark protected MPIs with USER1 flag.
* common/openpgp-oid.c (openpgp_curve_to_oid): Allow the use of
"NIST P-256" et al.
* g10/keygen.c (ask_curve): Add arg ALGO.
(generate_keypair): Rewrite the ECC key logic.
* tests/openpgp/ecc.test: Provide the "ecc" passphrase.
* agent/cvt-openpgp.c (get_keygrip, convert_secret_key)
(convert_transfer_key): Follow newer (>= 1.6) libgcrypt API, which
does not distinguish the detail.
(do_unprotect, convert_from_openpgp_main): Don't call
map_pk_openpgp_to_gcry, as it's the value of libgcrypt API already and
not the value defined by OpenPGP.
(convert_to_openpgp): It's "ecc".
* agent/gpg-agent.c (map_pk_openpgp_to_gcry): Remove.
* g10/call-agent.c (agent_pkdecrypt): Fix off-by-one error.
* g10/pubkey-enc.c (get_it): Fix swapping the fields error.
* agent/gpg-agent.c (main): Make sure homedir is absolute.
* common/asshelp.c (lock_spawning): Create lock file with an absolute
name.
(start_new_gpg_agent): Use an absolute name for the socket and pass
option --homedir to the agent.
(start_new_dirmngr): Use an absolute name for the --homedir.
--
This patch makes gpg's --homedir option behave again like in older
versions. This is done by starting a new agent for each different
home directory. Note that this assumes --use-standard-socket is used
which is the default for 2.1.
* agent/cvt-openpgp.c (convert_to_openpgp): Fix use
gcry_sexp_extract_param.
* g10/export.c (do_export_stream): Provide a proper prompt to the
agent.
--
NB: The export needs more work, in particular the ECC algorithms.
* agent/command-ssh.c (ssh_read_key_public_from_blob): Use
es_fopenmem.
(ssh_handler_request_identities): Ditto.
(ssh_request_process): Ditto.
--
es_fopenmem is easier to understand than the more general function
es_mopen. Thus we better use the former for clarity.
* agent/command-ssh.c (ssh_key_type_spec): Add field name.
(ssh_key_types): Add human readable names.
(add_control_entry): Add arg SPEC and print key type as comment.
(ssh_identity_register): Add arg SPEC.
(ssh_handler_add_identity): Add var SPEC and pass ssh_receive_key.
* agent/command-ssh.c (SPEC_FLAG_IS_EdDSA): New.
(ssh_key_types): Add entry for ssh-ed25519.
(ssh_identifier_from_curve_name): Move to the top.
(stream_read_skip): New.
(stream_read_blob): New.
(ssh_signature_encoder_rsa): Replace MPIS array by an s-exp and move
the s-exp parsing to here.
(ssh_signature_encoder_dsa): Ditto.
(ssh_signature_encoder_ecdsa): Ditto.
(ssh_signature_encoder_eddsa): New.
(sexp_key_construct): Rewrite.
(ssh_key_extract): Rename to ...
(ssh_key_to_blob): .. this and rewrite most of it.
(ssh_receive_key): Add case for EdDSA.
(ssh_convert_key_to_blob, key_secret_to_public): Remove.
(ssh_send_key_public): Rewrite.
(ssh_handler_request_identities): Simplify.
(data_sign): Add rename args. Add new args HASH and HASHLEN. Make
use of es_fopenmen and es_fclose_snatch. Remove parsing into MPIs
which is now doe in the sgnature encoder functions.
(ssh_handler_sign_request): Take care of Ed25519.
(ssh_key_extract_comment): Rewrite using gcry_sexp_nth_string.
--
To make the code easier readable most of the Ed25591 work has been
done using a new explicit code path. Warning: Libgcrypt 1.6.1 uses a
non optimized implementation for Ed25519 and timing attacks might be
possible.
While working on the code I realized that it could need more rework;
it is at some places quite baroque and more complicated than needed.
Given that we require Libgcrypt 1.6 anyway, we should make more use of
modern Libgcrypt functions.
