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gpg: Simplify the pubkey_enc_list object

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* 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.
This commit is contained in:
Werner Koch 2024-09-03 18:20:51 +02:00
parent 1e25157266
commit 1eaf1e236e
No known key found for this signature in database
GPG Key ID: E3FDFF218E45B72B
4 changed files with 88 additions and 62 deletions
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34
g10/free-packet.c
View File

@ -52,8 +52,10 @@ free_symkey_enc( PKT_symkey_enc *enc )
xfree(enc);
}
/* This is the core of free_pubkey_enc but does only release the
* allocated members of ENC. */
void
free_pubkey_enc( PKT_pubkey_enc *enc )
release_pubkey_enc_parts (PKT_pubkey_enc *enc)
{
int n, i;
n = pubkey_get_nenc( enc->pubkey_algo );
@ -61,9 +63,39 @@ free_pubkey_enc( PKT_pubkey_enc *enc )
mpi_release (enc->data[0]);
for (i=0; i < n; i++ )
mpi_release (enc->data[i]);
}
void
free_pubkey_enc (PKT_pubkey_enc *enc)
{
release_pubkey_enc_parts (enc);
xfree (enc);
}
/* Copy everything from SRC to DST. This assumes that DST has been
* malloced or statically allocated. */
void
copy_pubkey_enc_parts (PKT_pubkey_enc *dst, PKT_pubkey_enc *src)
{
int n, i;
dst->keyid[0] = src->keyid[0];
dst->keyid[1] = src->keyid[1];
dst->version = src->version;
dst->pubkey_algo = src->pubkey_algo;
dst->seskey_algo = src->seskey_algo;
dst->throw_keyid = src->throw_keyid;
if (!(n = pubkey_get_nenc (dst->pubkey_algo)))
n = 1; /* All data is in the first item as an opaque MPI. */
for (i=0; i < n; i++)
dst->data[i] = my_mpi_copy (src->data[i]);
for (; i < PUBKEY_MAX_NENC; i++)
dst->data[i] = NULL;
}
void
free_seckey_enc( PKT_signature *sig )
{

38
g10/mainproc.c
View File

@ -1,7 +1,7 @@
/* mainproc.c - handle packets
* Copyright (C) 1998-2009 Free Software Foundation, Inc.
* Copyright (C) 2013-2014 Werner Koch
* Copyright (C) 2020 g10 Code GmbH
* Copyright (C) 2020, 2024 g10 Code GmbH
*
* This file is part of GnuPG.
*
@ -141,10 +141,7 @@ release_list( CTX c )
{
struct pubkey_enc_list *tmp = c->pkenc_list->next;
mpi_release (c->pkenc_list->data[0]);
mpi_release (c->pkenc_list->data[1]);
mpi_release (c->pkenc_list->data[2]);
mpi_release (c->pkenc_list->data[3]);
release_pubkey_enc_parts (&c->pkenc_list->d);
xfree (c->pkenc_list);
c->pkenc_list = tmp;
}
@ -523,21 +520,10 @@ proc_pubkey_enc (CTX c, PACKET *pkt)
if (!opt.list_only && !opt.override_session_key)
{
struct pubkey_enc_list *x = xmalloc (sizeof *x);
struct pubkey_enc_list *x = xcalloc (1, sizeof *x);
x->keyid[0] = enc->keyid[0];
x->keyid[1] = enc->keyid[1];
x->pubkey_algo = enc->pubkey_algo;
copy_pubkey_enc_parts (&x->d, enc);
x->result = -1;
x->seskey_algo = enc->seskey_algo;
x->data[0] = x->data[1] = x->data[2] = x->data[3] = NULL;
if (enc->data[0])
{
x->data[0] = mpi_copy (enc->data[0]);
x->data[1] = mpi_copy (enc->data[1]);
x->data[2] = mpi_copy (enc->data[2]);
x->data[3] = mpi_copy (enc->data[3]);
}
x->next = c->pkenc_list;
c->pkenc_list = x;
}
@ -561,22 +547,22 @@ print_pkenc_list (ctrl_t ctrl, struct pubkey_enc_list *list)
pk = xmalloc_clear (sizeof *pk);
pk->pubkey_algo = list->pubkey_algo;
if (!get_pubkey (ctrl, pk, list->keyid))
pk->pubkey_algo = list->d.pubkey_algo;
if (!get_pubkey (ctrl, pk, list->d.keyid))
{
pubkey_string (pk, pkstrbuf, sizeof pkstrbuf);
log_info (_("encrypted with %s key, ID %s, created %s\n"),
pkstrbuf, keystr_from_pk (pk),
strtimestamp (pk->timestamp));
p = get_user_id_native (ctrl, list->keyid);
p = get_user_id_native (ctrl, list->d.keyid);
log_printf (_(" \"%s\"\n"), p);
xfree (p);
}
else
log_info (_("encrypted with %s key, ID %s\n"),
openpgp_pk_algo_name (list->pubkey_algo),
keystr(list->keyid));
openpgp_pk_algo_name (list->d.pubkey_algo),
keystr (list->d.keyid));
if (opt.flags.require_pqc_encryption
&& pk->pubkey_algo != PUBKEY_ALGO_KYBER)
@ -644,7 +630,7 @@ proc_encrypted (CTX c, PACKET *pkt)
{ /* Key was not tried or it caused an error. */
char buf[20];
snprintf (buf, sizeof buf, "%08lX%08lX",
(ulong)list->keyid[0], (ulong)list->keyid[1]);
(ulong)list->d.keyid[0], (ulong)list->d.keyid[1]);
write_status_text (STATUS_NO_SECKEY, buf);
}
}
@ -768,8 +754,8 @@ proc_encrypted (CTX c, PACKET *pkt)
for (i = c->pkenc_list; i && compliant; i = i->next)
{
memset (pk, 0, sizeof *pk);
pk->pubkey_algo = i->pubkey_algo;
if (!get_pubkey (c->ctrl, pk, i->keyid)
pk->pubkey_algo = i->d.pubkey_algo;
if (!get_pubkey (c->ctrl, pk, i->d.keyid)
&& !gnupg_pk_is_compliant (CO_DE_VS, pk->pubkey_algo, 0,
pk->pkey, nbits_from_pk (pk), NULL))
compliant = 0;

14
g10/packet.h
View File

@ -159,11 +159,8 @@ typedef struct {
struct pubkey_enc_list
{
struct pubkey_enc_list *next;
u32 keyid[2];
int pubkey_algo;
int seskey_algo;
int result;
gcry_mpi_t data[PUBKEY_MAX_NENC];
PKT_pubkey_enc d;
};
@ -895,19 +892,28 @@ void free_notation (struct notation *notation);
/*-- free-packet.c --*/
void free_symkey_enc( PKT_symkey_enc *enc );
void release_pubkey_enc_parts (PKT_pubkey_enc *enc);
void free_pubkey_enc( PKT_pubkey_enc *enc );
void copy_pubkey_enc_parts (PKT_pubkey_enc *dst, PKT_pubkey_enc *src);
void free_seckey_enc( PKT_signature *enc );
void release_public_key_parts( PKT_public_key *pk );
void free_public_key( PKT_public_key *key );
void free_attributes(PKT_user_id *uid);
void free_user_id( PKT_user_id *uid );
void free_comment( PKT_comment *rem );
void free_packet (PACKET *pkt, parse_packet_ctx_t parsectx);
prefitem_t *copy_prefs (const prefitem_t *prefs);
PKT_public_key *copy_public_key_basics (PKT_public_key *d, PKT_public_key *s);
PKT_public_key *copy_public_key( PKT_public_key *d, PKT_public_key *s );
PKT_signature *copy_signature( PKT_signature *d, PKT_signature *s );
PKT_user_id *scopy_user_id (PKT_user_id *sd );
int cmp_public_keys( PKT_public_key *a, PKT_public_key *b );
int cmp_signatures( PKT_signature *a, PKT_signature *b );
int cmp_user_ids( PKT_user_id *a, PKT_user_id *b );

50
g10/pubkey-enc.c
View File

@ -115,23 +115,23 @@ get_session_key (ctrl_t ctrl, struct pubkey_enc_list *list, DEK *dek)
*/
for (k = list; k; k = k->next)
{
if (!(k->pubkey_algo == PUBKEY_ALGO_ELGAMAL_E
|| k->pubkey_algo == PUBKEY_ALGO_ECDH
|| k->pubkey_algo == PUBKEY_ALGO_KYBER
|| k->pubkey_algo == PUBKEY_ALGO_RSA
|| k->pubkey_algo == PUBKEY_ALGO_RSA_E
|| k->pubkey_algo == PUBKEY_ALGO_ELGAMAL))
if (!(k->d.pubkey_algo == PUBKEY_ALGO_ELGAMAL_E
|| k->d.pubkey_algo == PUBKEY_ALGO_ECDH
|| k->d.pubkey_algo == PUBKEY_ALGO_KYBER
|| k->d.pubkey_algo == PUBKEY_ALGO_RSA
|| k->d.pubkey_algo == PUBKEY_ALGO_RSA_E
|| k->d.pubkey_algo == PUBKEY_ALGO_ELGAMAL))
continue;
if (openpgp_pk_test_algo2 (k->pubkey_algo, PUBKEY_USAGE_ENC))
if (openpgp_pk_test_algo2 (k->d.pubkey_algo, PUBKEY_USAGE_ENC))
continue;
if (sk->pubkey_algo != k->pubkey_algo)
if (sk->pubkey_algo != k->d.pubkey_algo)
continue;
keyid_from_pk (sk, keyid);
if (!k->keyid[0] && !k->keyid[1])
if (!k->d.keyid[0] && !k->d.keyid[1])
{
if (opt.skip_hidden_recipients)
continue;
@ -141,7 +141,7 @@ get_session_key (ctrl_t ctrl, struct pubkey_enc_list *list, DEK *dek)
keystr (keyid));
}
else if (opt.try_all_secrets
|| (k->keyid[0] == keyid[0] && k->keyid[1] == keyid[1]))
|| (k->d.keyid[0] == keyid[0] && k->d.keyid[1] == keyid[1]))
{
if (!opt.quiet && !(sk->pubkey_usage & PUBKEY_USAGE_XENC_MASK))
log_info (_("used key is not marked for encryption use.\n"));
@ -153,7 +153,7 @@ get_session_key (ctrl_t ctrl, struct pubkey_enc_list *list, DEK *dek)
k->result = err;
if (!err)
{
if (!opt.quiet && !k->keyid[0] && !k->keyid[1])
if (!opt.quiet && !k->d.keyid[0] && !k->d.keyid[1])
{
log_info (_("okay, we are the anonymous recipient.\n"));
if (!(sk->pubkey_usage & PUBKEY_USAGE_XENC_MASK))
@ -215,28 +215,28 @@ get_it (ctrl_t ctrl,
if (sk->pubkey_algo == PUBKEY_ALGO_ELGAMAL
|| sk->pubkey_algo == PUBKEY_ALGO_ELGAMAL_E)
{
if (!enc->data[0] || !enc->data[1])
if (!enc->d.data[0] || !enc->d.data[1])
err = gpg_error (GPG_ERR_BAD_MPI);
else
err = gcry_sexp_build (&s_data, NULL, "(enc-val(elg(a%m)(b%m)))",
enc->data[0], enc->data[1]);
enc->d.data[0], enc->d.data[1]);
}
else if (sk->pubkey_algo == PUBKEY_ALGO_RSA
|| sk->pubkey_algo == PUBKEY_ALGO_RSA_E)
{
if (!enc->data[0])
if (!enc->d.data[0])
err = gpg_error (GPG_ERR_BAD_MPI);
else
err = gcry_sexp_build (&s_data, NULL, "(enc-val(rsa(a%m)))",
enc->data[0]);
enc->d.data[0]);
}
else if (sk->pubkey_algo == PUBKEY_ALGO_ECDH)
{
if (!enc->data[0] || !enc->data[1])
if (!enc->d.data[0] || !enc->d.data[1])
err = gpg_error (GPG_ERR_BAD_MPI);
else
err = gcry_sexp_build (&s_data, NULL, "(enc-val(ecdh(s%m)(e%m)))",
enc->data[1], enc->data[0]);
enc->d.data[1], enc->d.data[0]);
}
else if (sk->pubkey_algo == PUBKEY_ALGO_KYBER)
{
@ -251,18 +251,18 @@ get_it (ctrl_t ctrl,
}
else
{
fixedinfo[0] = enc->seskey_algo;
fixedinfo[0] = enc->d.seskey_algo;
v5_fingerprint_from_pk (sk, fixedinfo+1, NULL);
fixedlen = 33;
}
if (!enc->data[0] || !enc->data[1] || !enc->data[2])
if (!enc->d.data[0] || !enc->d.data[1] || !enc->d.data[2])
err = gpg_error (GPG_ERR_BAD_MPI);
else
err = gcry_sexp_build (&s_data, NULL,
"(enc-val(pqc(e%m)(k%m)(s%m)(c%d)(fixed-info%b)))",
enc->data[0], enc->data[1], enc->data[2],
enc->seskey_algo, fixedlen, fixedinfo);
enc->d.data[0], enc->d.data[1], enc->d.data[2],
enc->d.seskey_algo, fixedlen, fixedinfo);
}
else
err = gpg_error (GPG_ERR_BUG);
@ -316,15 +316,17 @@ get_it (ctrl_t ctrl,
goto leave;
}
dek->keylen = nframe;
dek->algo = enc->seskey_algo;
dek->algo = enc->d.seskey_algo;
}
else if (sk->pubkey_algo == PUBKEY_ALGO_ECDH)
{
gcry_mpi_t decoded;
/* At the beginning the frame are the bytes of shared point MPI. */
err = pk_ecdh_decrypt (&decoded, fp, enc->data[1]/*encr data as an MPI*/,
frame, nframe, sk->pkey);
err = pk_ecdh_decrypt (&decoded, fp,
enc->d.data[1], /*encr data as an MPI*/
frame, nframe,
sk->pkey);
if(err)
goto leave;