* g10/build-packet.c (do_pubkey_enc): Support Kyber.
* g10/pkglue.c (do_encrypt_kem): Implement.
--
Note that the code does only work for ky768_cv25519 for now.
GnuPG-bug-id: 6815
* g10/packet.h (PKT_pubkey_enc): Add field seskey_algo.
(struct pubkey_enc_list): Ditto.
* g10/misc.c (pubkey_get_nenc): Change value for Kyber from 4 to 3.
* g10/parse-packet.c (parse_pubkeyenc): Store the Kyber algo in the
new field and adjust data. Do not store the length byte in data[2].
* g10/build-packet.c (do_pubkey_enc): Take the session algo for Kyber
from the new field.
* g10/encrypt.c (write_pubkey_enc): Ses the seskey_algo.
* g10/mainproc.c (proc_pubkey_enc): Copy it.
* g10/pubkey-enc.c (get_it): Support Kyber decryption.
* g10/seskey.c (encode_session_key): Handle Kyber different from ECDH.
--
Having always the single byte in the packet data than to store and
retrieve it from an MPI is much easier. Thus this patch changes the
original internal format. With this chnages decryption of the slighly
modified test data works now. See the bug tracker for test data.
GnuPG-bug-id: 6815
* common/openpgpdefs.h (PUBKEY_ALGO_KY768_25519): Remove.
(PUBKEY_ALGO_KY1024_448): Remove.
(PUBKEY_ALGO_KYBER): New. Use them everywhere instead of the removed.
* g10/build-packet.c (gpg_mpi_write_nohdr): Rename to
(gpg_mpi_write_opaque_nohdr): this. Change callers.
(gpg_mpi_write_opaque_32): New.
(do_key): Support Kyber keys using the revised format.
* g10/gpg.h (MAX_EXTERN_KEYPARM_BITS): New.
* g10/parse-packet.c (read_octet_string): Add arg nbytes so support
reading with a length prefix. Adjust callers.
(parse_key): Parse Kyber public keys.
* g10/misc.c (pubkey_get_npkey): Support Kyber.
(pubkey_get_nskey): Ditto.
* g10/keyid.c (pubkey_string): Support dual algorithms.
(do_hash_public_key): Support Kyber.
(nbits_from_pk): Ditto.
(keygrip_from_pk): Return the Kyber part for the ECC+Kyber dual algo.
* g10/keygen.c (struct common_gen_cb_parm_s): Add genkey_result2.
Note that this callback is not yet used.
(ecckey_from_sexp): Add optional arg sexp2 and use it for Kyber.
Change callers.
(ecckey_from_sexp): Do not leak LIST in case of an error.
(common_gen): Add arg keyparms2, change callers, and support Kyber.
(gen_kyber): New.
(get_keysize_range): Support Kyber.
(fixup_keysize): Simplify and support Kyber.
(do_create): Handle Kyber.
(parse_key_parameter_part): Remove algo strings "ky768" and "ky1024"
and add a generic "kyber" with default parameters.
--
This uses a revised format which is more aligned with the usual
OpenPGP structure. A lot of things are still missing. For example
support for handling two keygrips and checking both of them in a -K
listing. There is also only ky768_bp384 as fixed algorithm for now.
No passphrase for the Kyber part of the dual algorithm is on purpose.
A test was done using
gpg --quick-gen-key pqc1 nistp256
and then running
gpg -v --quick-add-key <fingerprint> kyber
which creates a v5 subkey on a v4 primary key. A second test using
gpg --quick-gen-key pqc2 Ed448
followed by a --quick-add-key created a v5 key with a v5 subkey.
GnuPG-bug-id: 6815
* g10/build-packet.c (gpg_mpi_write): Take care of the fact that
get_opaque already returns a bit-exact value.
--
Fixes-commit: ab17f7b6c3
Reported-by: Falko Strenzke <falko.strenzke@mtg.de>
* g10/free-packet.c (copy_public_key): Factor some code out to ...
(copy_public_key_basics): new.
* g10/build-packet.c (build_sig_subpkt_from_sig): New arg signhints.
* g10/packet.h (PUBKEY_USAGE_RENC): Fix value.
(SIGNHINT_KEYSIG, SIGNHINT_SELFSIG): Moved from sign.c.
(SIGNHINT_ADSK): New.
(PKT_public_key): Change pubkey_usage from byte to u16.
(PKT_user_id): Cosmetic fix: change help_key_usage from int to u16.
* g10/getkey.c (parse_key_usage): Make public.
* g10/misc.c (openpgp_pk_algo_usage): Take PUBKEY_USAGE_RENC in
account.
* g10/sign.c (update_keysig_packet): Set SIGNHINT_ADSK.
(make_keysig_packet): Ditto.
(do_sign): No time warp check in ADSK mode.
* g10/sig-check.c (check_signature_metadata_validity): Ditto.
* g10/keygen.c (struct opaque_data_usage_and_pk): Remove.
(write_keybinding): Do not use the removed struct.
(do_add_key_flags): Support PUBKEY_USAGE_RENC and others.
(keygen_add_key_flags_and_expire): Rewrite and make public.
* g10/keyedit.c (enum cmdids): Add cmdADDADSK.
(keyedit_menu): Add command "addadsk".
(menu_addadsk): New.
--
This makes use of a new encryption flag:
The "restricted encryption key" (2nd,0x04) does not take part in any
automatic selection of encryption keys. It is only found on a
subkey signature (type 0x18), one that refers to the key the flag
applies to.
Followup patches will add encryption support and a --quick command.
GnuPG-bug-id: 6395
* agent/command.c (cmd_export_key): Add option --mode1003.
(command_has_option): Ditto.
* g10/build-packet.c (do_key): Implement mode 1003.
* g10/parse-packet.c (parse_key): Ditto.
* g10/options.h (EXPORT_MODE1003): New.o
* g10/call-agent.c (agent_export_key): Add arg mode1003.
* g10/export.c (parse_export_options): Add "mode1003"
(secret_key_to_mode1003): New.
(receive_seckey_from_agent): Add arg mode1003.
(do_export_one_keyblock): Pass option down.
--
This option allows to export a secret key in GnuPG's native format.
Thus no re-encryption is required and further the public key parameters
are also authenticated if a protection passphrase has been used.
Note that --import is not yet able to handle this new mode. Although
old version of GnuPG will bail out with "invalid packet" if a mode1003
exported secret key is seen.
* g10/pkglue.h (sexp_extract_param_sos): New.
* g10/build-packet.c (sos_write): New.
(do_key, do_pubkey_enc, do_signature): Use sos_write for ECC.
* g10/export.c (cleartext_secret_key_to_openpgp): Use
sexp_extract_param_sos.
(transfer_format_to_openpgp): Use opaque MPI for ECC.
* g10/keygen.c (ecckey_from_sexp): Use sexp_extract_param_sos.
* g10/keyid.c (hash_public_key): Handle opaque MPI for SOS.
* g10/parse-packet.c (sos_read): New.
(parse_pubkeyenc,parse_signature,parse_key): Use sos_read for ECC.
* g10/pkglue.c (sexp_extract_param_sos): New.
(pk_verify): Handle opaque MPI for SOS.
(pk_encrypt): Use sexp_extract_param_sos.
* g10/seskey.c (encode_session_key): Use opaque MPI.
* g10/sign.c (do_sign): Use sexp_extract_param_sos.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* g10/parse-packet.c (enum_sig_subpkt): Replace first arg by two args
so that the entire signature packet is available. Change all callers.
(parse_sig_subpkt): Ditto.
--
This patch is a prerequisite to support the new attestation key
signatures.
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/parse-packet.c: Move max packet lengths constants to ...
* g10/packet.h: ... here.
* g10/build-packet.c (do_user_id): Return an error if too data is too
large.
* g10/keygen.c (write_uid): Return an error for too large data.
--
This can lead to keyring corruption becuase we expect that our parser
is abale to parse packts created by us. Test case is
gpg --batch --passphrase 'abc' -v \
--quick-gen-key $(yes 'a'| head -4000|tr -d '\n')
GnuPG-bug-id: 4532
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/build-packet.c (gpg_mpi_write): New optional arg
R_NWRITTEN. Allow NULL for OUT. Change all callers.
(do_key): Support v5 keys.
(build_sig_subpkt_from_sig): Support 32 byte fingerprints.
* g10/parse-packet.c (parse_signature): First try to set the keyid
from the issuer fingerprint.
(parse_key): Support v5 keys.
(create_gpg_control): Better make sure to always allocate the static
size of the struct in case future compilers print warnings.
* g10/keyid.c (hash_public_key): Add v5 support.
(keyid_from_pk): Ditto.
(keyid_from_fingerprint): Ditto.
(fingerprint_from_pk): Ditto.
* g10/keygen.c (KEYGEN_FLAG_CREATE_V5_KEY): New.
(pVERSION, pSUBVERSION): New.
(add_feature_v5): New.
(keygen_upd_std_prefs): Call it.
(do_create_from_keygrip): Add arg keygen_flags and support the v5
flag.
(common_gen): Support the v5 flag.
(parse_key_parameter_part): New flags v4 and v5.
(parse_key_parameter_string): Add args for version and subversion.
(read_parameter_file): New keywords "Key-Version" and
"Subkey-Version".
(quickgen_set_para): Add arg 'version'.
(quick_generate_keypair, generate_keypair): Support version parms.
(do_generate_keypair): Support v5 key flag.
(generate_subkeypair): Ditto.
(generate_card_subkeypair): Preparse for keyflags.
(gen_card_key): Ditto.
* g10/sig-check.c (check_signature2): Add args extrahash and
extrahashlen.
(check_signature_end): Ditto.
(check_signature_end_simple): Ditto. Use them.
* g10/mainproc.c (proc_plaintext): Put extra hash infor into the
control packet.
(do_check_sig): Add args extrahas and extrahashlen and pass them on.
(issuer_fpr_raw): Support 32 byte fingerprint.
(check_sig_and_print): get extra hash data and pass it on.
--
Note that this is only basic support and requires more fine
tuning/fixing.
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/packet.h (PKT_symkey_enc): Add field aead_algo.
* g10/build-packet.c (do_symkey_enc): Support version 5 packets.
* g10/parse-packet.c (parse_symkeyenc): Ditto.
* g10/encrypt.c (encrypt_symmetric): Force using a random session
key in AEAD mode.
(encrypt_seskey): Add and support arg aead_algo.
(write_symkey_enc): Ditto.
(encrypt_simple): Adjust accordingly.
(encrypt_filter): Ditto.
* g10/gpgcompose.c (sk_esk): For now call encrypt_seskey without AEAD
support.
* g10/mainproc.c (symkey_decrypt_seskey): Support AEAD. Nver call BUG
but return an error.
(proc_symkey_enc): Call symkey_decrypt_seskey in a bug compatible way.
* g10/import.c (check_prefs): Check AEAD preferences.
* g10/keyedit.c (show_prefs): Print AEAD preferences.
--
For easier debugging this patch also changes some diagnostics to also
print the encryption mode with the cipher algorithm.
Signed-off-by: Werner Koch <wk@gnupg.org>
* common/openpgpdefs.h (PKT_ENCRYPTED_AEAD): New const.
* g10/dek.h (DEK): Increase size of use_aead to 4 bits.
* g10/filter.h (cipher_filter_context_t): Add new fields for AEAD.
* g10/packet.h (PKT_encrypted): Add fields aead_algo, cipher_algo, and
chunkbyte.
* g10/build-packet.c (do_encrypted_aead): New.
(build_packet): Call it.
* g10/parse-packet.c (dump_sig_subpkt): Handle SIGSUBPKT_PREF_AEAD.
(parse_one_sig_subpkt, can_handle_critical): Ditto.
(parse_encrypted): Clear new PKT_ENCRYPTED fields.
(parse_encrypted_aead): New.
(parse): Call it.
* g10/gpg.c (main): Take care of --rfc4880bis option when checking
compliance.
* g10/cipher-aead.c: Replace the stub by real code.
* g10/decrypt-data.c (decode_filter_ctx_t): Add fields for use with
AEAD.
(aead_set_nonce): New.
(aead_set_ad): New.
(decrypt_data): Support AEAD.
(aead_underflow): New.
(aead_decode_filter): New.
* g10/encrypt.c (use_aead): Make that new fucntion work.
(encrypt_simple): Use default_aead_algo() instead of EAX.
* g10/mainproc.c (proc_encrypted): Support AEAD.
(do_proc_packets): Support PKT_ENCRYPTED_AEAD.
--
This code has seen only a very few manual tests. Encrypting always
uses a 64k chunks and decryption has not been tested with larger
chunks. Those small chunks make debugging much faster.
Tests can be done using:
gpg --rfc4880bis --pinentry-mode=loopback --passphrase abc \
--force-aead --aead-algo ocb --s2k-mode 0 --cipher AES \
-v -z 0 --status-fd 2 -c <INFILE >OUTFILE
and
gpg --rfc4880bis --pinentry-mode=loopback --passphrase=abc \
--status-fd 2 -v -d <INFILE >OUTFILE
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/packet.h (struct parse_packet_ctx_s): Change LAST_PKT deom a
pointer to its struct.
(init_parse_packet): Adjust for LAST_PKT not being a pointer.
* g10/parse-packet.c (parse): Ditto. Free the last packet before
storing a new one in case of a deep link.
(parse_ring_trust): Adjust for LAST_PKT not being a pointer.
* g10/free-packet.c (free_packet): Ditto.
* g10/t-keydb-get-keyblock.c (do_test): Release keyblock.
--
Fixes-commit: afa8680908
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/build-packet.c (do_user_id): Avoid indeterminate length header.
--
We are able to import such user ids but when exporting them the
exported data could not be imported again because the parser bails out
on invalid keyrings. This is now fixed and should be backported.
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/parse-packet.c (parse_trust): Rename to ...
(parse_ring_trust): this. Change args and implement new ring trust
packet format.
(parse): Add special ring trust packet handling.
* g10/packet.h (PKT_user_id): New fields KEYUPDATE, UPDATEURL, and
KEYSRC.
(PKT_public_key): Ditto.
(RING_TRUST_SIG, RING_TRUST_KEY, RING_TRUST_UID): New consts.
(PKT_ring_trust): New.
(struct packet_struct): Remove member RING_TRUST.
(strcu parse_packet_ctx_s): Add field SKIP_META.
(init_parse_packet): Init SKIPT_META.
* g10/free-packet.c (release_public_key_parts): Free UDPATEURL.
(free_user_id): Ditto.
* g10/mainproc.c (list_node): Remove printing of non-documented "rtv"
lines.
* g10/build-packet.c (build_packet_and_meta): New.
(do_ring_trust): New.
* g10/export.c (write_keyblock_to_output): Use build_packet_and_meta
in backup mode.
(do_export_one_keyblock): Ditto.
* g10/import.c (read_block): Add arg WITH_META. Skip ring trust
packets if that ism not set.
(import): Call read_block WITH_META in restore mode.
* g10/keydb.h (KEYSRC_UNKNOWN, KEYSRC_FILE, KEYSRC_KS, KEYSRC_PREF_KS)
(KEYSRC_WKD, KEYSRC_WKD_SD, KEYSRC_DANE): New constants. They are not
yet used, though.
* g10/keydb.c (parse_keyblock_image): Allow ring trust packets.
(build_keyblock_image): Ditto. Use build_packet_and_meta.
* g10/keyring.c (keyring_get_keyblock): Remove specila treatment of
ring trust packets.
(write_keyblock): Use build_packet_and_meta. Remove special treatment
of ring trust packets and initialization of the signature caches.
--
This patch introduced the framework to store meta data for keys and
user ids in the keyrings/keyboxes. Ring trust packets are
implementation defined and have always been used in gpg to cache the
signature verification status.
Ring trust packets are only exported with the export option "backup"
and only imported with the import option "restore".
The new code uses a cleaner way to handle the ring trust packets: When
the parser reads a ring trust packet and the previously read packet
matches the type of that ring trust packet, the information is stored
in that previously read packet (signature, user id, or primary key)
and the next packet is read immediately. Thus only the parser sees
the ring trust packets. Ring trust packets are written by using the
new function build_packet_and_meta instead of build_packet. That
function writes a ring trust packet when the needed information is
available.
As a side-effect of this patch the signature status cache works again
and "gpg --check-sigs" is thus much faster.
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/build-packet.c (build_sig_subpkt_from_sig): Always write the new
Issuer Fingerprint sub-packet.
* g10/mainproc.c (check_sig_and_print): Always consider that
sub-packet.
--
The specs for this sub-packet have been pushed to the OpenPGP WG's
repo today.
See-also: https://mailarchive.ietf.org/arch/msg/\
openpgp/GvPo2eSL9GW9WcGhOocY7KBa9FY
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/gpg.c (oMimemode): New.
(opts): Add --mimemode.
(main): Use --mimemode only in rfc4880bis compliance mode.
* g10/options.h (struct opt): Add field "mimemode".
* g10/build-packet.c (do_plaintext): Allow for mode 'm'.
* g10/encrypt.c (encrypt_simple, encrypt_crypt): Use 'm' if requested.
* g10/plaintext.c (handle_plaintext): Handle 'm' mode.
* g10/sign.c (write_plaintext_packet): Handle 'm' mode.
(sign_file, sign_symencrypt_file): Use 'm' if requested.
--
Thsi patch prepares for a proposed change in RFC4880bis to support a
MIME flag. A literal data packet with the mime flag set is handled
like a 't' or 'u' but CR are not removed. The PLAINTEXT status line
will also indicate a MIME content.
If --mimemode is used without --rfc4880bis 't' will be used.
Signed-off-by: Werner Koch <wk@gnupg.org>
* common/openpgpdefs.h (SIGSUBPKT_ISSUER_FPR): New.
* g10/build-packet.c (build_sig_subpkt_from_sig): Add arg PKSK and
insert the issuer fpr if needed.
* g10/sign.c (write_signature_packets): Pass signing key.
(make_keysig_packet): Ditto.
(update_keysig_packet): Ditto.
* g10/parse-packet.c (dump_sig_subpkt): Print issuer fpr.
(parse_one_sig_subpkt): Detect issuer fpr.
(can_handle_critical): Add issuer fpr.
* g10/mainproc.c (check_sig_and_print): Try to get key via fingerprint.
* g10/gpgv.c (keyserver_import_fprint): New stub.
* g10/test-stubs.c (keyserver_import_fprint): New stub.
--
This support is enabled with the --rfc4880bis option and intended to
test to recently proposed issuer fpr.
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/build-packet.c (write_fake_data): Check for non-opaque data.
* g10/seskey.c (do_encode_md): Return NULL instead of abort.
--
The first may happen if the usage flags of an algorithm do not match
the allowed usage. When writing a backsig this would lead to a
log_bug in libgcrypt due to the use of a regular MPI as opaque data.
The second may happen with all kind of invalid data. It is easy to
avoid an abort, though.
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/build-packet.c (do_key): Do not use the header length specified
by the public key packet from the keyring, but let 'write_header2'
compute the required length.
--
Specifically exporting RSA keys of length 1024 failed, as the encoded
public key packet requires 141 bytes a length that fits into one byte,
but the secret key is significantly larger, making the export fail.
GnuPG-bug-id: 2307
Signed-off-by: Justus Winter <justus@g10code.com>
* g10/build-packet.c (do_plaintext): Change the semantics such that if
PT->BUF is NULL, it is the caller's responsibility to write the
content (and disable partial body length mode, if appropriate).
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/build-packet.c (sig_to_notation): Break printing of binary
notations into...
(notation_value_to_human_readable_string): ... this new function.
Provide a small preview of the binary data substituting non-printable
characters with '?'.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/build-packet.c (write_header2): Make sure the length bits are
cleared. Fail if HDRLEN is set and the specified length can't be
encoded in the available space.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/build-packet.c (do_plaintext): Use ctb_new_format_p to check the
packet's format.
(write_header2): Likewise.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/build-packet.c (sig_to_notation): Avoid an unnecessary copy of
the data: the size of the packet is fixed.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/build-packet.c (do_symkey_enc): Use iobuf_write instead of
iobuf_put in a loop. Use iobuf_copy instead of iobuf_read and
iobuf_write in a loop. Move the memory wiping from here...
* common/iobuf.c (iobuf_copy): ... to here.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/build-packet.c (calc_header_length): Return the correct haeder
size when LEN is 0. Fix documentation.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
GnuPG-bug-id: 2240
* g10/build-packet.c (gpg_mpi_write): Strip leading zeroes.
--
This used not to work with opaque MPI as returned by Libgcrypt from
ECC operations. This patch fixes this.
Signed-off-by: Werner Koch <wk@gnupg.org>
