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* gpg: Fix regression for the recent malicious subkey DoS fix.Werner Koch2025-03-061-0/+1
| | | | | | | | | | | * g10/packet.h (PUBKEY_USAGE_VERIFY): New. * g10/getkey.c (get_pubkey_for_sig): Pass new flag also to requested usage. (finish_lookup): Introduce a verify_mode. -- Fixes-commit: 48978ccb4e20866472ef18436a32744350a65158 GnuPG-bug-id: 7547
* gpg: Fix a verification DoS due to a malicious subkey in the keyring.Werner Koch2025-02-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * g10/getkey.c (get_pubkey): Factor code out to ... (get_pubkey_bykid): new. Add feature to return the keyblock. (get_pubkey_for_sig): Add arg r_keyblock to return the used keyblock. Request a signing usage. (get_pubkeyblock_for_sig): Remove. (finish_lookup): Improve debug output. * g10/sig-check.c (check_signature): Add arg r_keyblock and pass it down. * g10/mainproc.c (do_check_sig): Ditto. (check_sig_and_print): Use the keyblock returned by do_check_sig to show further information instead of looking it up again with get_pubkeyblock_for_sig. Also re-check the signature after the import of an included keyblock. -- The problem here is that it is possible to import a key from someone who added a signature subkey from another public key and thus inhibits that a good signature good be verified. Such a malicious key signature subkey must have been created w/o the mandatory backsig which bind a signature subkey to its primary key. For encryption subkeys this is not an issue because the existence of a decryption private key is all you need to decrypt something and then it does not matter if the public subkey or its binding signature has been put below another primary key; in fact we do the latter for ADSKs. GnuPG-bug-id: 7527
* gpg: Remove a signature check function wrapper.Werner Koch2025-02-201-5/+1
| | | | | | * g10/sig-check.c (check_signature2): Rename to (check_signature): this and remove the old wrapper. Adjust all callers.
* gpg: Allow the use of an ADSK subkey as ADSK subkey.Werner Koch2024-10-311-4/+3
| | | | | | | | | | | | | | | | | | | | | | * g10/packet.h (PKT_public_key): Increased size of req_usage to 16. * g10/getkey.c (key_byname): Set allow_adsk in the context if ir was requested via req_usage. (finish_lookup): Allow RENC usage matching. * g10/keyedit.c (append_adsk_to_key): Adjust the assert. * g10/keygen.c (prepare_adsk): Also allow to find an RENC subkey. -- If an ADSK is to be added it may happen that an ADSK subkey is found first and this should then be used even that it does not have the E usage. However, it used to have that E usage when it was added. While testing this I found another pecularity: If you do gpg -k ADSK_SUBKEY_FPR without the '!' suffix and no corresponding encryption subkey is dound, you will get an unusabe key error. I hesitate to fix that due to possible side-effects. GnuPG-bug-id: 6882
* gpg: New commands --add-recipients and --change-recipients.Werner Koch2024-09-091-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * g10/gpg.c (aAddRecipients, aChangeRecipients): New consts. (opts): Add --add-recipients and --change-recipients. (main): Handle them. * g10/gpg.h (struct server_control_s): Add fields modify_recipients, clear_recipients, and last_read_ctb. * g10/armor.c (was_armored): New. * g10/decrypt.c (decrypt_message): Add optional arg 'remusr'. Handle re-encryption if desired. * g10/encrypt.c (write_pubkey_enc): Factor info printing out to ... (show_encrypted_for_user_info): new. (reencrypt_to_new_recipients): New. * g10/packet.h (struct parse_packet_ctx_s): Add fields only_fookey_enc and last_ctb. (init_parse_packet): Clear them. * g10/parse-packet.c (parse): Store CTB in the context. Early return on pubkey_enc and symkey_enc packets if requested. * g10/mainproc.c (proc_encrypted): Allow for PKT being NULL. Return early in modify-recipients mode. (proc_encryption_packets): Add two optional args 'r_dek' and 'r_list'. Adjust callers. Call do_proc_packets in modify-recipients mode depending on the optional args. (do_proc_packets): Add arg 'keep_dek_and_list'. Adjust callers. Save the last read CTB in CTRL and return after the last fooenc_enc packets. -- This basically works but does not yet handle symmetric encrypted packets (symkey_enc). GnuPG-bug-id: 1825 (Yes, this is an at least 9 year old feature request)
* gpg: Simplify the pubkey_enc_list objectWerner Koch2024-09-061-4/+10
| | | | | | | | | | | | * g10/packet.h (struct pubkey_enc_list): Replace most by a PKT_pubkey_enc member. * g10/free-packet.c (free_pubkey_enc): Factor most stuff out to ... (release_pubkey_enc_parts): new. (copy_pubkey_enc_parts): New. * g10/mainproc.c (release_list): Adjust for above change. (proc_pubkey_enc): Ditto. (print_pkenc_list): Ditto. (proc_encrypted): Ditto.
* gpg: Improve decryption diagnostic for an ADSK key.Werner Koch2024-08-121-0/+4
| | | | | | | | | | | | | | | | | | | | | * g10/keydb.h (GET_PUBKEYBLOCK_FLAG_ADSK): New constant. * g10/packet.h (PUBKEY_USAGE_XENC_MASK): New constant. * g10/pubkey-enc.c (get_session_key): Consider an ADSK also as "marked for encryption use". (get_it): Print a note if an ADSK key was used. Use the new get_pubkeyblock flag. * g10/getkey.c (struct getkey_ctx_s): Add field allow_adsk. (get_pubkeyblock): Factor all code out to ... (get_pubkeyblock_ext): new. (finish_lookup): Add new arg allow_adsk and make use of it. -- This patch solves two purposes: - We write a note that the ADSK key was used for decryption - We avoid running into a "oops: public key not found for preference check\n" due to ADSK keys. The error is mostly harmless but lets gpg return with an exit code of 2.
* gpg: Do not show RENC if no key capabilities are found for a key.Werner Koch2024-06-051-0/+4
| | | | | | * g10/packet.h (PUBKEY_USAGE_BASIC_MASK): New. * g10/getkey.c (merge_selfsigs_subkey): Mask the default. (merge_selfsigs_main): Ditto.
* indent: Fix spellingDaniel Kahn Gillmor2024-05-311-1/+1
| | | | | | | | | | | | | -- These are non-substantive corrections for minor spelling mistakes within the GnuPG codebase. With something like this applied to the codebase, and a judiciously tuned spellchecker integrated as part of a standard test suite, it should be possible to keep a uniform orthography within the project. GnuPG-bug-id: 7116
* gpg: Changed internal data format for Kyber.Werner Koch2024-04-111-0/+3
| | | | | | | | | | | | | | | | | | | | | | | * 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
* gpg: Initial support for generating Kyber subkeys.Werner Koch2024-04-031-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 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
* gpg: new list-option show-x509-notationsWerner Koch2024-03-121-3/+4
| | | | | | | | | | | * g10/gpg.c (parse_list_options): Add new option. * g10/options.h (LIST_SHOW_X509_NOTATIONS): New. * g10/build-packet.c (search_sig_notations): New. * g10/keylist.c (print_x509_notations): New. (list_signature_print): Use macros for the sig classes. Call print_x509_notations. (list_keyblock_print): Call list_signature_print if x509 notation printing is enabled.
* agent,common,gpg: Use unsigned int for 1-bit field.NIIBE Yutaka2023-09-261-2/+2
| | | | | | | | | | * agent/trustlist.c (struct trustitem_s): Use unsigned int. * common/audit.c (struct log_item_s): Likewise. * g10/packet.h (struct seckey_info): Likewise. -- Signed-off-by: NIIBE Yutaka <[email protected]>
* gpg: Use gnupg_fd_t for decryption and sign.NIIBE Yutaka2023-07-051-2/+2
| | | | | | | | | | | | | | | | * g10/decrypt.c (decrypt_message_fd): Use gnupg_fd_t. * g10/plaintext.c (hash_datafile_by_fd): Use gnupg_fd_t. * g10/main.h: Fix the declarations. * g10/mainproc.c (struct mainproc_context): Use gnupg_fd_t for DATA_FD. (proc_compressed_cb, proc_signature_packets): Follow the change. (proc_signature_packets_by_fd): Use gnupg_fd_t. * g10/packet.h: Fix the declaration. -- GnuPG-bug-id: 6580 Signed-off-by: NIIBE Yutaka <[email protected]>
* gpg: Allow adding of Additional Decryption Subkeys.Werner Koch2023-03-011-5/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 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
* gpg: Support key flags for RENC, TIME, and GROUP.Werner Koch2022-09-071-0/+3
| | | | | | | | | | | | | | | | | | * g10/packet.h (PUBKEY_USAGE_RENC): New. (PUBKEY_USAGE_TIME): New. (PUBKEY_USAGE_GROUP): New. * g10/getkey.c (parse_key_usage): Set the new key flags. * g10/keyedit.c (show_key_with_all_names_colon): Show the new key flags. * g10/keyid.c (usagestr_from_pk): Ditto * g10/keylist.c (print_capabilities): Ditto. * g10/keygen.c (parse_usagestr): Parse line and set new flags. (quickgen_set_para): Show flags. -- See draft-koch-openpgp-2015-rfc4880bis-00 for the current version. Actually these flags have been in the draft for years now. This patch is a first step to make use of them.
* gpg: Allow decryption of symencr even for non-compliant cipher.Werner Koch2022-03-181-2/+3
| | | | | | | | | | | | | | | | | | | | | | * g10/decrypt-data.c (decrypt_data): Add arg compliance_error. Adjust all callers. Fail on compliance error only in --require-compliance mode. Make sure to return an error if the buffer is missing; actually that should be an assert. * g10/mainproc.c (proc_encrypted): Delay printing of the compliance mode status. Consult the compliance error now returned by decrypt_data. -- The actual case here is that we fail hard if a message has been AEAD encrypted with one AEAD capable key and also with one passphrase. In general the preference system takes care of not using AEAD if one recipient's key does not support it. However, if the sender uses her own AEAD-capable key _and_ a passphrase the message will be AEAD encrypted. This change allows to decrypt that anyway along with a warning message. Note that this does currently not work in 2.3 due to a non-compliant libgcrypt. We will however, backport this to 2.2.
* gpg: Remove support for PKA.Werner Koch2021-02-021-16/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * g10/gpg.c (oPrintPKARecords): Remove. (opts): Remove --print-pka-records. (main): Remove "pka-lookups","pka-trust-increase" and other PKA stuff. * g10/options.h (EXPORT_DANE_FORMAT): Remove. (VERIFY_PKA_LOOKUPS, VERIFY_PKA_TRUST_INCREASE): Remove. (KEYSERVER_HONOR_PKA_RECORD): Remove. * g10/packet.h (pka_info_t): Remove. (PKT_signature): Remove flags.pka_tried and pka_info. * g10/parse-packet.c (register_known_notation): Remove "[email protected]". * g10/pkclist.c (check_signatures_trust): Remove PKA stuff. * g10/call-dirmngr.c (gpg_dirmngr_get_pka): Remove. * g10/export.c (parse_export_options): Remove "export-pka". (do_export): Adjust for this. (write_keyblock_to_output): Ditto. (do_export_stream): Ditto. (print_pka_or_dane_records): Rename to ... (print_dane_records): this and remove two args. Remove PKA printing. * g10/free-packet.c (free_seckey_enc, cp_pka_info): Adjust for removed pka_info field. * g10/getkey.c (get_pubkey_byname): Make AKL_PKA a dummy. * g10/keyserver.c: Remove "honor-pka-record". (keyserver_import_pka): Remove. * g10/mainproc.c (get_pka_address): Remove. (pka_uri_from_sig): Remove. (check_sig_and_print): Remove code for PKA. -- PKA (Public Key Association) was a DNS based key discovery method which looked up fingerprint by mail addresses in the DNS. This goes back to the conference where DKIM was suggested to show that we already had a better method for this available with PGP/MIME. PKA was was later superseded by an experimental DANE method and is today not anymore relevant. It is anyway doubtful whether PKA was ever widely used. Signed-off-by: Werner Koch <[email protected]>
* doc: Minor code comment fixes.Werner Koch2020-06-081-0/+3
| | | | --
* gpg: Make use of the included key block in a signature.Werner Koch2020-03-131-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * g10/import.c (read_key_from_file): Rename to ... (read_key_from_file_or_buffer): this and add new parameters. Adjust callers. (import_included_key_block): New. * g10/packet.h (PKT_signature): Add field flags.key_block. * g10/parse-packet.c (parse_signature): Set that flags. * g10/sig-check.c (check_signature2): Add parm forced_pk and change all callers. * g10/mainproc.c (do_check_sig): Ditto. (check_sig_and_print): Try the included key block if no key is available. -- This is is the second part to support the new Key Block subpacket. The idea is that after having received a signed mail, it is instantly possible to reply encrypted - without the need for any centralized infrastructure. There is one case where this does not work: A signed mail is received using a specified signer ID (e.g. using gpg --sender option) and the key block with only that user ID is thus imported. The next time a mail is received using the same key but with a different user ID; the signatures checks out using the key imported the last time. However, the new user id is not imported. Now when trying to reply to that last mail, no key will be found. We need to see whether we can update a key in such a case. GnuPG-bug-id: 4856 Signed-off-by: Werner Koch <[email protected]>
* gpg: Move a keydb function to another file.Werner Koch2019-11-271-0/+1
| | | | | | | * g10/keydb.c (build_keyblock_image): Move to ... * g10/build-packet.c (build_keyblock_image): here. Signed-off-by: Werner Koch <[email protected]>
* gpg: Rework the signature subpacket iteration function.Werner Koch2019-09-051-48/+51
| | | | | | | | | | | | * 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 <[email protected]>
* gpg: Do not allow creation of user ids larger than our parser allows.Werner Koch2019-05-211-0/+5
| | | | | | | | | | | | | | | | | | * 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 <[email protected]>
* gpg: Cleanup use of make_keysig_packet.Werner Koch2019-05-131-1/+1
| | | | | | | | | | * g10/sign.c (make_keysig_packet): Remove obsolete arg diegst_algo which was always passed as 0. Change all callers. * g10/gpgcompose.c (signature): Warn when trying to set a digest algo. -- Signed-off-by: Werner Koch <[email protected]>
* gpg: Cache a once computed fingerprint in PKT_public_key.Werner Koch2019-04-121-0/+3
| | | | | | | | | | | | | | * g10/packet.h (PKT_public_key): Add fields fpr and fprlen. * g10/keyid.c (do_fingerprint_md): Remove. (compute_fingerprint): New. (keyid_from_pk): Simplify. (fingerprint_from_pk): Simplify. (hexfingerprint): Avoid using extra array. -- This is similar to what we are doing with the keyid for a long time. Signed-off-by: Werner Koch <[email protected]>
* gpg: Implement v5 keys and v5 signatures.Werner Koch2019-03-141-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 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 <[email protected]>
* common: Provide some convenient OpenPGP related constants.Werner Koch2019-01-291-5/+5
| | | | | | | | | | * common/openpgpdefs.h (OPENPGP_MAX_NPKEY): New. (OPENPGP_MAX_NSKEY): New. (OPENPGP_MAX_NSIG): New. (OPENPGP_MAX_NENC): New. * g10/packet.h: Define PUBKEY_MAX using the new consts. Signed-off-by: Werner Koch <[email protected]>
* gpg: Report STATUS_NO_SECKEY when it is examined.NIIBE Yutaka2019-01-161-0/+1
| | | | | | | | | | | | | | * g10/packet.h (struct pubkey_enc_list): Add result. * g10/mainproc.c (proc_pubkey_enc): Initialize ->result. (proc_encrypted): Report STATUS_NO_SECKEY status. * g10/pubkey-enc.c (get_session_key): Set ->result. -- This change is for GPGME compatibility. Before this change, gpgme/tests/json/t-json failed with t-decrypt-verify. Signed-off-by: NIIBE Yutaka <[email protected]>
* gpg: Prepare revocation keys for use with v5 keys.Werner Koch2018-12-041-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | * g10/packet.h (struct revocation_key): Add field 'fprlen'. * g10/parse-packet.c (parse_revkeys): Set fprlen and allow for v5 keys. Also fix reading of unitialized data at place where MAX_FINGERPRINT_LEN is used. * g10/revoke.c (gen_desig_revoke): Allow for v5 keys and use fprlen. Do an explicit compare to avoid reading unitialized data. * g10/sig-check.c (check_revocation_keys): Use the fprlen. * g10/getkey.c (merge_selfsigs_main): Do an explicit copy to avoid reading unitialized data. * g10/import.c (revocation_present): Use fprlen. * g10/keyedit.c (show_key_with_all_names): Use fprlen. (menu_addrevoker): Use fprlen. Allow for v5 keys. * g10/keygen.c (keygen_add_revkey): Use fprlen. (parse_revocation_key): Allow for v5 keys. * g10/keyid.c (keyid_from_fingerprint): Allow for v5 keys. Print a better error message in case of bogus fingerprints. * g10/keylist.c (print_revokers): Use fprlen. -- The reading of uninitialized data is harmless but we better fix it to make valgrind happy. More serious was that we always passed MAX_FINGERPRINT_LEN but we will need to support 20 and 32 octet fingerprints and MAX_FINGERPRINT_LEN would be too large for a v4. Signed-off-by: Werner Koch <[email protected]>
* headers: fix spellingDaniel Kahn Gillmor2018-10-251-1/+1
| | | | Signed-off-by: Daniel Kahn Gillmor <[email protected]>
* gpg: New option --known-notation.Werner Koch2018-08-291-0/+3
| | | | | | | | | | | | | | * g10/gpg.c (oKnownNotation): New const. (opts): Add option --known-notation. (main): Set option. * g10/parse-packet.c (known_notations_list): New local var. (register_known_notation): New. (can_handle_critical_notation): Rewrite to handle the new feature. Also print the name of unknown notations in verbose mode. -- GnuPG-bug-id: 4060 Signed-off-by: Werner Koch <[email protected]>
* g10: Change decryption key selection for public key encryption.NIIBE Yutaka2018-08-271-1/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | * g10/mainproc.c (struct mainproc_context): It's now pubkey_enc_list. (do_proc_packets): Remove the first arg CTRL. Fix call of proc_pubkey_enc. (release_list): Handle pubkey_enc_list. (proc_pubkey_enc): Remove the first arg CTRL. Simply put the packet to pubkey_enc_list. (print_pkenc_list): Remove the last arg FAILED. (proc_encrypted): Only call print_pkenc_list once. Handle DEK here. (proc_packets, proc_signature_packets, proc_signature_packets_by_fd) (proc_encryption_packets): Fix call of do_proc_packets. * g10/packet.h (struct pubkey_enc_list): Define. * g10/pubkey-enc.c (get_it): Change the second argument K. (get_session_key): Select session key by LIST, using enum_secret_keys. * g10/gpgv.c (get_session_key): Change the second argument K. * g10/test-stubs.c (get_session_key): Likewise. -- Collect all PKT_PUBKEY_ENC packets, and then, process the PKT_ENCRYPTED* packet. Signed-off-by: NIIBE Yutaka <[email protected]>
* gpg: Prepare for signatures with ISSUER_FPR but without ISSUER.Werner Koch2018-07-051-0/+1
| | | | | | | | | | | | | | | | | | * g10/getkey.c (get_pubkey_for_sig): New. (get_pubkeyblock_for_sig): New. * g10/mainproc.c (issuer_fpr_raw): Give global scope. (check_sig_and_print): Use get_pubkeyblock_for_sig. * g10/pkclist.c (check_signatures_trust): Use get_pubkey_for_sig. * g10/sig-check.c (check_signature2): Ditto. (check_signature_over_key_or_uid): Ditto. -- GnuPG-bug-id: 4046 The whole getkey stuff is still a mess with way to much duplication and missing caching of already fetched data. Signed-off-by: Werner Koch <[email protected]>
* gpg: Fix import's repair-key duplicate signature detection.Werner Koch2018-06-071-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * g10/packet.h (PKG_siganture): Add field 'help_counter'. * g10/key-check.c (sig_comparison): Take care of HELP_COUNTER. (key_check_all_keysigs): De-duplicate on a per-block base. -- The key_check_all_keysigs first does a detection of duplicate signature. This is done over all signatures at once. The problem here is for example: key uid_1 sig_uid_1.1 sig_uid_1.2 subkey_1 sig_sub_1.1 subkey_2 sig_sub_2.1 sig_sub_2.2 (duplicate of sig_sub_1.1) Now the de-duplication deletes the first signature and keeps the second. That works in most cases for foreign signature on userids but in the above constellation the code simply removes sig_sub_1.1 so that subkey_1 has no binding signature anymore. In a later step during import the missing binding is detected and subkey_1 is removed because it is not anymore valid. The sig_sub_2.2 will also be removed later because it does not check out for subkey_2 (that is as expected). The fix is to let the de-duplication work only on blocks (ie. within the signatures of a user id or a subkey). This will not detect all duplicates but that does not harm because later steps will detect and remove them. In the above case (with this patch applied) the second phase of key_check_all_keysigs will reorder key signatures and move the duplicate sig_sub_2.2 directly after sig_sub_1.1. This duplicates the signature and for cleanness we should kick the de-duplication process again. This will be done with a followup patch. GnuPG-bug-id: 3994 Signed-off-by: Werner Koch <[email protected]>
* Merge branch 'STABLE-BRANCH-2-2' into masterWerner Koch2018-05-131-0/+2
|\ | | | | | | | | | | | | | | | | | | -- Resolved Conflicts: NEWS - removed configure.ac - removed Signed-off-by: Werner Koch <[email protected]>
| * gpg: Extend the "sig" record in --list-mode.Werner Koch2018-04-121-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * g10/getkey.c (get_user_id_string): Add arg R_NOUID. Change call callers. (get_user_id): Add arg R_NOUID. Change call callers. * g10/mainproc.c (issuer_fpr_string): Make global. * g10/keylist.c (list_keyblock_colon): Print a '?' for a missing key also in --list-mode. Print the "issuer fpr" field also if there is an issuer fingerprint subpacket. -- Scripts used to rely on the "User ID not found" string even in the --with-colons listing. However, that is not a good idea because that string is subject to translations etc. Now we have an explicit way of telling that a key is missing. For example: gpg --list-sigs --with-colons | \ awk -F: '$1=="sig" && $2=="?" {if($13){print $13}else{print $5}}' Prints all keyids or fingerprint of signing keys for which we do not have the key in our local keyring. Signed-off-by: Werner Koch <[email protected]>
* | gpg: Implement AEAD for SKESK packets.Werner Koch2018-01-231-5/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 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 <[email protected]>
* | gpg: First take on PKT_ENCRYPTED_AEAD.Werner Koch2018-01-211-6/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 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 <[email protected]>
* | gpg: Add option and preference framework for AEAD.Werner Koch2018-01-101-2/+5
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * common/openpgpdefs.h (aead_algo_t): New. (SIGSUBPKT_PREF_AEAD): New. * g10/gpg.c (oAEADAlgo, oPersonalAEADPreferences): New. (opts): New options --aead-algo and --personal-aead-preferences. (set_compliance_option): Clar aead algo. (main): Parse and check the new options * g10/options.h (struct opt): Add fields def_aead_algo and personal_aead_prefs. * g10/packet.h (PREFTYPE_AEAD): New enum value. (PKT_user_id): Add field flags.aead. (PKT_public_key): Add field flags.aead. * g10/pkclist.c (select_algo_from_prefs): Support PREFTYPE_AEAD. * g10/getkey.c (fixup_uidnode): Set AEAD flag. (merge_selfsigs): Ditto. * g10/kbnode.c (dump_kbnode): Show aead flag. * g10/keyedit.c (show_prefs): Ditto. (show_key_with_all_names_colon): Ditto. * g10/keygen.c (aead_presf, n_aead_prefs): New vars. (set_one_pref): Suppport PREFTYPE_AEAD. (keygen_set_std_prefs): Parse AEAD preferences. (keygen_get_std_prefs): Ditto. (add_feature_aead): New. (keygen_upd_std_prefs): Call that and build AEAD pref packet. * g10/main.h (DEFAULT_AEAD_ALGO): New const. * g10/misc.c (openpgp_aead_test_algo): New. (openpgp_aead_algo_name): New. (string_to_aead_algo): New. (default_aead_algo): New. -- This is only used in --rfc4880bis mode and not really tested. Signed-off-by: Werner Koch <[email protected]>
* doc: Comment fixes and one trailing comma fix.Werner Koch2017-07-201-3/+3
| | | | --
* gpg: New option --key-origin.Werner Koch2017-07-131-3/+3
| | | | | | | | | | | | | | | * g10/keydb.h (KEYORG_): Rename to KEYORG_. * g10/packet.h (PKT_user_id): Rename field keysrc to keyorg. Adjust users. (PKT_public_key): Ditto. (PKT_ring_trust): Ditto. * g10/options.h (struct opt): Add field key_origin. * g10/getkey.c (parse_key_origin): New. * g10/gpg.c (oKeyOrigin): New. (opts): Add "keys-origin". (main): Set option. Signed-off-by: Werner Koch <[email protected]>
* gpg: Properly account for ring trust packets.Justus Winter2017-05-081-0/+2
| | | | | | | | | | | | | | | | | | | | | | | * g10/keyring.c (keyring_get_keyblock): Use the parser's packet count instead of counting ourself. * g10/packet.h (struct parse_packet_ctx_s): New field 'n_parsed_packets'. (init_parse_packet): Initialize new field. * g10/parse-packet.c (parse): Count packets. -- The 'keyring' keystore depends on the number of packets for delete and update operations. With the rework of the ring trust packets, the trust packets were no longer properly accounted for leading to keyring corruptions. The 'keybox' store was not affected. GnuPG-bug-id: 3123 GnuPG-bug-id: 3135 GnuPG-bug-id: 3144 Fixes-commit: a8895c99a7d0750132477d80cd66caaf3a709113 Signed-off-by: Justus Winter <[email protected]>
* gpg: Fix typo.Justus Winter2017-05-081-1/+1
| | | | | -- Signed-off-by: Justus Winter <[email protected]>
* Spelling fixes in docs and comments.NIIBE Yutaka2017-04-281-1/+1
| | | | | | | | | | -- In addition, fix trailing spaces in tests/inittests. GnuPG-bug-id: 3121 Reported-by: ka7 (klemens) Signed-off-by: NIIBE Yutaka <[email protected]>
* gpg: Pass CTRL to many more functions.Werner Koch2017-03-311-5/+8
| | | | | | | | | | -- For proper operations as a server we need to avoid global variables. Thus we need to pass the session state CTRL to most functions. Quite a lot of changes but fortunately straightforward to do. Signed-off-by: Werner Koch <[email protected]>
* gpg: Fix actual leak and possible leaks in the packet parser.Werner Koch2017-03-301-2/+3
| | | | | | | | | | | | | | | * 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: afa86809087909a8ba2f9356588bf90cc923529c Signed-off-by: Werner Koch <[email protected]>
* gpg: Revamp reading and writing of ring trust packets.Werner Koch2017-03-301-7/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 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 <[email protected]>
* gpg: Extend free_packet to handle a packet parser context.Werner Koch2017-03-291-4/+13
| | | | | | | | | | | | | | | * g10/packet.h (struct parse_packet_ctx_s): Add fields LAST_PKT and FREE_LAST_PKT. (init_parse_packet): Clear them. (deinit_parse_packet): New macro. Change all users if init_parse_packet to also call this macro. * g10/free-packet.c (free_packet): Add arg PARSECTX and handle shallow packet copies in the context. Change all callers. * g10/parse-packet.c (parse): Store certain packets in the parse context. -- Signed-off-by: Werner Koch <[email protected]>
* gpg: Change parse_packet to take a context.Werner Koch2017-03-291-40/+56
| | | | | | | | | | | | | | | | | | * g10/packet.h (struct parse_packet_ctx_s): New. (parse_packet_ctx_t): New type. (init_parse_packet): New macro. * g10/parse-packet.c (parse_packet, dbg_parse_packet): Change to take a parse context. Change all callers to provide a context instead of directly supplying the input stream. (search_packet, dbg_search_packet): Ditto. (copy_all_packets, dbg_copy_all_packets): Init an use a parse context. (copy_some_packets, dbg_copy_some_packets): Ditto. (skip_some_packets, dbg_skip_some_packets): Ditto. -- We will need this change to handle ring packets inside the parser. Signed-off-by: Werner Koch <[email protected]>
* g10: Move more flags into the flag bitfield.Justus Winter2017-03-081-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * g10/packet.h (PKT_user_id): Move 'is_primary', 'is_revoked', and 'is_expired' into the flags bitfield, and drop the prefix. * g10/call-dirmngr.c: Adapt accordingly. * g10/export.c: Likewise. * g10/getkey.c: Likewise. * g10/import.c: Likewise. * g10/kbnode.c: Likewise. * g10/keyedit.c: Likewise. * g10/keylist.c: Likewise. * g10/keyserver.c: Likewise. * g10/mainproc.c: Likewise. * g10/pkclist.c: Likewise. * g10/pubkey-enc.c: Likewise. * g10/tofu.c: Likewise. * g10/trust.c: Likewise. * g10/trustdb.c: Likewise. -- This patch has been created by applying the following semantic patch: @@ expression E; @@ -E->is_expired +E->flags.expired @@ expression E; @@ -E->is_primary +E->flags.primary @@ expression E; @@ -E->is_revoked +E->flags.revoked Signed-off-by: Justus Winter <[email protected]>
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