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gpg,gpgsm: Record the creation time of a private key.

Browse Source 
* sm/call-agent.c (gpgsm_agent_genkey): Pass --timestamp option.
(gpgsm_agent_import_key): Ditto.
* g10/call-agent.c (agent_genkey): Add arg timestamp and pass it on.
(agent_import_key): Ditto.
* g10/import.c (transfer_secret_keys): Pass the creation date to the
agent.
* g10/keygen.c (common_gen): Ditto.
--

Having the creation time in the private key file makes it a lot easier
to re-create an OpenPGP public keyblock in case it was accidentally
lost.

Signed-off-by: Werner Koch <wk@gnupg.org>
Cherry-picked-from-master: 4031c42bfd0135874a5b362df175de93a19f1b51
This commit is contained in:
Werner Koch 2020-08-19 13:43:16 +02:00
parent 051830d7b4
commit 5ac0cf1b81
No known key found for this signature in database
GPG Key ID: E3FDFF218E45B72B
5 changed files with 43 additions and 12 deletions
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31
g10/call-agent.c
View File

@ -1946,11 +1946,12 @@ inq_genkey_parms (void *opaque, const char *line)
gcry_pk_genkey. If NO_PROTECTION is true the agent is advised not
to protect the generated key. If NO_PROTECTION is not set and
PASSPHRASE is not NULL the agent is requested to protect the key
with that passphrase instead of asking for one. */
with that passphrase instead of asking for one. TIMESTAMP is the
creation time of the key or zero. */
gpg_error_t
agent_genkey (ctrl_t ctrl, char **cache_nonce_addr, char **passwd_nonce_addr,
const char *keyparms, int no_protection,
const char *passphrase, gcry_sexp_t *r_pubkey)
const char *passphrase, time_t timestamp, gcry_sexp_t *r_pubkey)
{
gpg_error_t err;
struct genkey_parm_s gk_parm;
@ -1959,6 +1960,7 @@ agent_genkey (ctrl_t ctrl, char **cache_nonce_addr, char **passwd_nonce_addr,
membuf_t data;
size_t len;
unsigned char *buf;
char timestamparg[16 + 16]; /* The 2nd 16 is sizeof(gnupg_isotime_t) */
char line[ASSUAN_LINELENGTH];
memset (&dfltparm, 0, sizeof dfltparm);
@ -1970,6 +1972,14 @@ agent_genkey (ctrl_t ctrl, char **cache_nonce_addr, char **passwd_nonce_addr,
return err;
dfltparm.ctx = agent_ctx;
if (timestamp)
{
strcpy (timestamparg, " --timestamp=");
epoch2isotime (timestamparg+13, timestamp);
}
else
*timestamparg = 0;
if (passwd_nonce_addr && *passwd_nonce_addr)
; /* A RESET would flush the passwd nonce cache. */
else
@ -1984,7 +1994,8 @@ agent_genkey (ctrl_t ctrl, char **cache_nonce_addr, char **passwd_nonce_addr,
gk_parm.dflt = &dfltparm;
gk_parm.keyparms = keyparms;
gk_parm.passphrase = passphrase;
snprintf (line, sizeof line, "GENKEY%s%s%s%s%s",
snprintf (line, sizeof line, "GENKEY%s%s%s%s%s%s",
*timestamparg? timestamparg : "",
no_protection? " --no-protection" :
passphrase ? " --inq-passwd" :
/* */ "",
@ -2388,11 +2399,12 @@ inq_import_key_parms (void *opaque, const char *line)
gpg_error_t
agent_import_key (ctrl_t ctrl, const char *desc, char **cache_nonce_addr,
const void *key, size_t keylen, int unattended, int force,
u32 *keyid, u32 *mainkeyid, int pubkey_algo)
u32 *keyid, u32 *mainkeyid, int pubkey_algo, u32 timestamp)
{
gpg_error_t err;
struct import_key_parm_s parm;
struct cache_nonce_parm_s cn_parm;
char timestamparg[16 + 16]; /* The 2nd 16 is sizeof(gnupg_isotime_t) */
char line[ASSUAN_LINELENGTH];
struct default_inq_parm_s dfltparm;
@ -2407,6 +2419,14 @@ agent_import_key (ctrl_t ctrl, const char *desc, char **cache_nonce_addr,
return err;
dfltparm.ctx = agent_ctx;
if (timestamp)
{
strcpy (timestamparg, " --timestamp=");
epoch2isotime (timestamparg+13, timestamp);
}
else
*timestamparg = 0;
if (desc)
{
snprintf (line, DIM(line), "SETKEYDESC %s", desc);
@ -2420,7 +2440,8 @@ agent_import_key (ctrl_t ctrl, const char *desc, char **cache_nonce_addr,
parm.key = key;
parm.keylen = keylen;
snprintf (line, sizeof line, "IMPORT_KEY%s%s%s%s",
snprintf (line, sizeof line, "IMPORT_KEY%s%s%s%s%s",
*timestamparg? timestamparg : "",
unattended? " --unattended":"",
force? " --force":"",
cache_nonce_addr && *cache_nonce_addr? " ":"",

5
g10/call-agent.h
View File

@ -166,7 +166,7 @@ gpg_error_t agent_get_keyinfo (ctrl_t ctrl, const char *hexkeygrip,
gpg_error_t agent_genkey (ctrl_t ctrl,
char **cache_nonce_addr, char **passwd_nonce_addr,
const char *keyparms, int no_protection,
const char *passphrase,
const char *passphrase, time_t timestamp,
gcry_sexp_t *r_pubkey);
/* Read a public key. */
@ -196,7 +196,8 @@ gpg_error_t agent_keywrap_key (ctrl_t ctrl, int forexport,
gpg_error_t agent_import_key (ctrl_t ctrl, const char *desc,
char **cache_nonce_addr, const void *key,
size_t keylen, int unattended, int force,
u32 *keyid, u32 *mainkeyid, int pubkey_algo);
u32 *keyid, u32 *mainkeyid, int pubkey_algo,
u32 timestamp);
/* Receive a key from the agent. */
gpg_error_t agent_export_key (ctrl_t ctrl, const char *keygrip,

3
g10/import.c
View File

@ -2630,7 +2630,8 @@ transfer_secret_keys (ctrl_t ctrl, struct import_stats_s *stats,
char *desc = gpg_format_keydesc (ctrl, pk, FORMAT_KEYDESC_IMPORT, 1);
err = agent_import_key (ctrl, desc, &cache_nonce,
wrappedkey, wrappedkeylen, batch, force,
pk->keyid, pk->main_keyid, pk->pubkey_algo);
pk->keyid, pk->main_keyid, pk->pubkey_algo,
pk->timestamp);
xfree (desc);
}
if (!err)

2
g10/keygen.c
View File

@ -1367,7 +1367,7 @@ common_gen (const char *keyparms, int algo, const char *algoelem,
err = agent_genkey (NULL, cache_nonce_addr, passwd_nonce_addr, keyparms,
!!(keygen_flags & KEYGEN_FLAG_NO_PROTECTION),
passphrase,
passphrase, timestamp,
&s_key);
if (err)
{

12
sm/call-agent.c
View File

@ -575,6 +575,8 @@ gpgsm_agent_genkey (ctrl_t ctrl,
membuf_t data;
size_t len;
unsigned char *buf;
gnupg_isotime_t timebuf;
char line[ASSUAN_LINELENGTH];
*r_pubkey = NULL;
rc = start_agent (ctrl);
@ -592,7 +594,9 @@ gpgsm_agent_genkey (ctrl_t ctrl,
gk_parm.sexplen = gcry_sexp_canon_len (keyparms, 0, NULL, NULL);
if (!gk_parm.sexplen)
return gpg_error (GPG_ERR_INV_VALUE);
rc = assuan_transact (agent_ctx, "GENKEY",
gnupg_get_isotime (timebuf);
snprintf (line, sizeof line, "GENKEY --timestamp=%s", timebuf);
rc = assuan_transact (agent_ctx, line,
put_membuf_cb, &data,
inq_genkey_parms, &gk_parm, NULL, NULL);
if (rc)
@ -1344,6 +1348,8 @@ gpgsm_agent_import_key (ctrl_t ctrl, const void *key, size_t keylen)
{
gpg_error_t err;
struct import_key_parm_s parm;
gnupg_isotime_t timebuf;
char line[ASSUAN_LINELENGTH];
err = start_agent (ctrl);
if (err)
@ -1354,7 +1360,9 @@ gpgsm_agent_import_key (ctrl_t ctrl, const void *key, size_t keylen)
parm.key = key;
parm.keylen = keylen;
err = assuan_transact (agent_ctx, "IMPORT_KEY",
gnupg_get_isotime (timebuf);
snprintf (line, sizeof line, "IMPORT_KEY --timestamp=%s", timebuf);
err = assuan_transact (agent_ctx, line,
NULL, NULL, inq_import_key_parms, &parm, NULL, NULL);
return err;
}