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card: Make "generate" work for PIV cards.

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* tools/card-call-scd.c (scd_genkey_cb): Make createtime optional.
(scd_genkey_cb):  Ditto.  Add arg algo.
* tools/gpg-card-tool.c (cmd_generate): Add options and factor card
specific code out to ...
(generate_openpgp, generate_generic): new functions.
--

This patch keeps the interactive OpenPGP mode but adds a pure command
line mode for other cards; in particular PIV cards.  What we still
need to do is:
 a) Add an interactive mode for PIV cards
 b) Add a command line mode for OpenPGP cards.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2019-02-08 11:58:27 +01:00
parent b349adc5c0
commit a1cb4a940f
No known key found for this signature in database
GPG Key ID: E3FDFF218E45B72B
3 changed files with 141 additions and 25 deletions
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15
tools/card-call-scd.c
View File

@ -202,7 +202,7 @@ app_type_string (app_type_t app_type)
case APP_TYPE_OPENPGP: result = "OpenPGP"; break;
case APP_TYPE_NKS: result = "NetKey"; break;
case APP_TYPE_DINSIG: result = "DINSIG"; break;
case APP_TYPE_P15: result = "PKCS#15"; break;
case APP_TYPE_P15: result = "P15"; break;
case APP_TYPE_GELDKARTE: result = "Geldkarte"; break;
case APP_TYPE_SC_HSM: result = "SC-HSM"; break;
case APP_TYPE_PIV: result = "PIV"; break;
@ -1174,7 +1174,8 @@ scd_genkey_cb (void *opaque, const char *line)
if (keywordlen == 14 && !memcmp (keyword,"KEY-CREATED-AT", keywordlen))
{
*createtime = (u32)strtoul (line, NULL, 10);
if (createtime)
*createtime = (u32)strtoul (line, NULL, 10);
}
else if (keywordlen == 8 && !memcmp (keyword, "PROGRESS", keywordlen))
{
@ -1190,7 +1191,7 @@ scd_genkey_cb (void *opaque, const char *line)
* SCDEAMON. On success, creation time is stored back to
* CREATETIME. */
gpg_error_t
scd_genkey (int keyno, int force, u32 *createtime)
scd_genkey (const char *keyref, int force, const char *algo, u32 *createtime)
{
gpg_error_t err;
char line[ASSUAN_LINELENGTH];
@ -1203,15 +1204,17 @@ scd_genkey (int keyno, int force, u32 *createtime)
if (err)
return err;
if (*createtime)
if (createtime && *createtime)
epoch2isotime (tbuf, *createtime);
else
*tbuf = 0;
snprintf (line, sizeof line, "SCD GENKEY %s%s %s %d",
snprintf (line, sizeof line, "SCD GENKEY %s%s %s %s%s -- %s",
*tbuf? "--timestamp=":"", tbuf,
force? "--force":"",
keyno);
algo? "--algo=":"",
algo? algo:"",
keyref);
dfltparm.ctx = agent_ctx;
err = assuan_transact (agent_ctx, line,

3
tools/card-tool.h
View File

@ -208,7 +208,8 @@ gpg_error_t scd_writecert (const char *certidstr,
const unsigned char *certdata, size_t certdatalen);
gpg_error_t scd_writekey (int keyno,
const unsigned char *keydata, size_t keydatalen);
gpg_error_t scd_genkey (int keyno, int force, u32 *createtime);
gpg_error_t scd_genkey (const char *keyref, int force, const char *algo,
u32 *createtime);
gpg_error_t scd_serialno (char **r_serialno, const char *demand);
gpg_error_t scd_readcert (const char *certidstr,
void **r_buf, size_t *r_buflen);

148
tools/gpg-card-tool.c
View File

@ -1722,7 +1722,8 @@ cmd_forcesig (card_info_t info)
}
/* Helper for cmd_generate. Noe that either 0 or 1 is stored at
/* Helper for cmd_generate_openpgp. Noe that either 0 or 1 is stored at
* FORCED_CHV1. */
static gpg_error_t
check_pin_for_key_operation (card_info_t info, int *forced_chv1)
@ -1754,7 +1755,7 @@ check_pin_for_key_operation (card_info_t info, int *forced_chv1)
}
/* Helper for cmd_generate. */
/* Helper for cmd_generate_openpgp. */
static void
restore_forced_chv1 (int *forced_chv1)
{
@ -1775,8 +1776,9 @@ restore_forced_chv1 (int *forced_chv1)
}
/* Implementation of cmd_generate for OpenPGP cards. */
static gpg_error_t
cmd_generate (card_info_t info)
generate_openpgp (card_info_t info)
{
gpg_error_t err;
int forced_chv1 = -1;
@ -1784,18 +1786,6 @@ cmd_generate (card_info_t info)
char *answer = NULL;
key_info_t kinfo1, kinfo2, kinfo3;
if (!info)
return print_help
("GENERATE\n\n"
"Menu to generate a new keys.",
APP_TYPE_OPENPGP, 0);
if (info->apptype != APP_TYPE_OPENPGP)
{
log_info ("Note: This is an OpenPGP only command.\n");
return gpg_error (GPG_ERR_NOT_SUPPORTED);
}
if (info->extcap.ki)
{
xfree (answer);
@ -1811,7 +1801,6 @@ cmd_generate (card_info_t info)
else
want_backup = 0;
kinfo1 = find_kinfo (info, "OPENPGP.1");
kinfo2 = find_kinfo (info, "OPENPGP.2");
kinfo3 = find_kinfo (info, "OPENPGP.3");
@ -1860,6 +1849,7 @@ cmd_generate (card_info_t info)
* gpg. We might also first create the keys on the card and then
* tell gpg to use them to create the OpenPGP keyblock. */
/* generate_keypair (ctrl, 1, NULL, info.serialno, want_backup); */
(void)want_backup;
err = gpg_error (GPG_ERR_NOT_IMPLEMENTED);
leave:
@ -1869,6 +1859,126 @@ cmd_generate (card_info_t info)
}
/* Generic implementation of cmd_generate. */
static gpg_error_t
generate_generic (card_info_t info, const char *keyref, int force,
const char *algo)
{
gpg_error_t err;
(void)info;
err = scd_genkey (keyref, force, algo, NULL);
return err;
}
static gpg_error_t
cmd_generate (card_info_t info, char *argstr)
{
static char * const valid_algos[] =
{ "rsa2048", "rsa3072", "rsa4096",
"nistp256", "nistp384", "nistp521",
"ed25519", "cv25519",
NULL
};
gpg_error_t err;
int opt_force;
char *opt_algo = NULL; /* Malloced. */
char *keyref_buffer = NULL; /* Malloced. */
char *keyref; /* Points into argstr or keyref_buffer. */
int i;
if (!info)
return print_help
("GENERATE [--force] [--algo=ALGO] KEYREF\n\n"
"Create a new key on a card. For OpenPGP cards are menu is used\n"
"and KEYREF is ignored. Use --force to overwrite an existing key.",
APP_TYPE_OPENPGP, APP_TYPE_PIV, 0);
if (opt.interactive || opt.verbose)
log_info (_("%s card no. %s detected\n"),
app_type_string (info->apptype),
info->dispserialno? info->dispserialno : info->serialno);
opt_force = has_leading_option (argstr, "--force");
err = get_option_value (argstr, "--algo", &opt_algo);
if (err)
goto leave;
argstr = skip_options (argstr);
keyref = argstr;
if ((argstr = strchr (keyref, ' ')))
{
*argstr++ = 0;
trim_spaces (keyref);
trim_spaces (argstr);
}
else /* Let argstr point to an empty string. */
argstr = keyref + strlen (keyref);
if (!*keyref)
keyref = NULL;
if (*argstr)
{
/* Extra arguments found. */
err = gpg_error (GPG_ERR_INV_ARG);
goto leave;
}
if (opt_algo)
{
for (i=0; valid_algos[i]; i++)
if (!strcmp (valid_algos[i], opt_algo))
break;
if (!valid_algos[i])
{
err = gpg_error (GPG_ERR_PUBKEY_ALGO);
log_info ("Invalid algorithm '%s' given. Use one:\n", opt_algo);
for (i=0; valid_algos[i]; i++)
if (!(i%5))
log_info (" %s%s", valid_algos[i], valid_algos[i+1]?",":".");
else
log_printf (" %s%s", valid_algos[i], valid_algos[i+1]?",":".");
log_info ("Note that the card may not support all of them.\n");
goto leave;
}
}
/* Upcase the keyref; if it misses the cardtype, prepend it. */
if (keyref)
{
if (!strchr (keyref, '.'))
keyref_buffer = xstrconcat (app_type_string (info->apptype), ".",
keyref, NULL);
else
keyref_buffer = xstrdup (keyref);
ascii_strupr (keyref_buffer);
keyref = keyref_buffer;
}
/* Divert to dedicated functions. */
if (info->apptype == APP_TYPE_OPENPGP)
{
if (opt_force || opt_algo || keyref)
log_info ("Note: Options are ignored for OpenPGP cards.\n");
err = generate_openpgp (info);
}
else if (!keyref)
err = gpg_error (GPG_ERR_INV_ID);
else
err = generate_generic (info, keyref, opt_force, opt_algo);
leave:
xfree (opt_algo);
xfree (keyref_buffer);
return err;
}
/* Sub-menu to change a PIN. The presented options may depend on the
* the ALLOW_ADMIN flag. */
static gpg_error_t
@ -2572,6 +2682,8 @@ ask_card_keyattr (int keyno, const struct key_attr *current,
curve = current->curve;
}
(void)curve;
(void)algo;
err = GPG_ERR_NOT_IMPLEMENTED;
goto leave;
/* FIXME: We need to mve the ask_cure code out to common or
@ -2929,7 +3041,7 @@ dispatch_command (card_info_t info, const char *orig_command)
case cmdWRITECERT: err = cmd_writecert (info, argstr); break;
case cmdREADCERT: err = cmd_readcert (info, argstr); break;
case cmdFORCESIG: err = cmd_forcesig (info); break;
case cmdGENERATE: err = cmd_generate (info); break;
case cmdGENERATE: err = cmd_generate (info, argstr); break;
case cmdPASSWD: err = cmd_passwd (info, 1, argstr); break;
case cmdUNBLOCK: err = cmd_unblock (info); break;
case cmdFACTORYRESET: err = cmd_factoryreset (info); break;
@ -3195,7 +3307,7 @@ interactive_loop (void)
case cmdWRITECERT: err = cmd_writecert (info, argstr); break;
case cmdREADCERT: err = cmd_readcert (info, argstr); break;
case cmdFORCESIG: err = cmd_forcesig (info); break;
case cmdGENERATE: err = cmd_generate (info); break;
case cmdGENERATE: err = cmd_generate (info, argstr); break;
case cmdPASSWD: err = cmd_passwd (info, allow_admin, argstr); break;
case cmdUNBLOCK: err = cmd_unblock (info); break;
case cmdFACTORYRESET: