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gpg: Prepare parser for the new attestation certificates.

Browse source 
* common/openpgpdefs.h (SIGSUBPKT_ATTST_SIGS): New.
* g10/keydb.h (IS_ATTST_SIGS): New.
(IS_CERT): Include the new one.
* g10/sign.c (mk_notation_policy_etc): Do not put notations into
attestation key signatures.
* g10/parse-packet.c (dump_sig_subpkt): Add new arg digest_algo.
Print the attestation sigs.
(parse_one_sig_subpkt): Support SIGSUBPKT_ATTST_SIGS.
(can_handle_critical): Ditto.
(enum_sig_subpkt): Pass digest algo to dump_sig_subpkt.
--

This change allows to list the new subpacket with --list-packets.
Example output:

  :signature packet: algo 22, keyid C694723A1370EAB1
          version 4, created 1567097576, md5len 0, sigclass 0x16
          digest algo 8, begin of digest ff 0c
          hashed subpkt 2 len 4 (sig created 2019-08-29)
          hashed subpkt 37 len 32 (attst-sigs: 1
                                   A794C6E9CCFE2F34C67E07[...])
          hashed subpkt 33 len 21 (issuer fpr v4 156A3872[...])
          subpkt 16 len 8 (issuer key ID C694723A1370EAB1)
          data: [256 bits]
          data: [256 bits]

GnuPG-bug-id: 4694
Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2019-09-05 21:27:13 +02:00
parent e1d9be730c
commit 209caaff66
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
4 changed files with 59 additions and 14 deletions
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2
common/openpgpdefs.h
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@ -119,6 +119,8 @@ typedef enum
SIGSUBPKT_ISSUER_FPR = 33, /* Issuer fingerprint. */
SIGSUBPKT_PREF_AEAD = 34, /* Preferred AEAD algorithms. */
SIGSUBPKT_ATTST_SIGS = 37, /* Attested Certifications. */
SIGSUBPKT_FLAG_CRITICAL = 128
}
sigsubpkttype_t;