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Import OpenPGP keys into the agent.

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This commit is contained in:
Werner Koch 2010-08-31 15:58:39 +00:00
parent 71bc88fbae
commit 87fac99112
23 changed files with 1669 additions and 282 deletions
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101
g10/call-agent.c
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@ -77,6 +77,13 @@ struct genkey_parm_s
const char *keyparms;
};
struct import_key_parm_s
{
ctrl_t ctrl;
assuan_context_t ctx;
const void *key;
size_t keylen;
};
static gpg_error_t learn_status_cb (void *opaque, const char *line);
@ -1706,3 +1713,97 @@ agent_pkdecrypt (ctrl_t ctrl, const char *keygrip, const char *desc,
*r_buf = buf;
return 0;
}
/* Retrieve a key encryption key from the agent. With FOREXPORT true
the key shall be used for export, with false for import. On success
the new key is stored at R_KEY and its length at R_KEKLEN. */
gpg_error_t
agent_keywrap_key (ctrl_t ctrl, int forexport, void **r_kek, size_t *r_keklen)
{
gpg_error_t err;
membuf_t data;
size_t len;
unsigned char *buf;
char line[ASSUAN_LINELENGTH];
*r_kek = NULL;
err = start_agent (ctrl, 0);
if (err)
return err;
snprintf (line, DIM(line)-1, "KEYWRAP_KEY %s",
forexport? "--export":"--import");
init_membuf_secure (&data, 64);
err = assuan_transact (agent_ctx, line,
membuf_data_cb, &data,
default_inq_cb, ctrl, NULL, NULL);
if (err)
{
xfree (get_membuf (&data, &len));
return err;
}
buf = get_membuf (&data, &len);
if (!buf)
return gpg_error_from_syserror ();
*r_kek = buf;
*r_keklen = len;
return 0;
}
/* Handle the inquiry for an IMPORT_KEY command. */
static gpg_error_t
inq_import_key_parms (void *opaque, const char *line)
{
struct import_key_parm_s *parm = opaque;
gpg_error_t err;
if (!strncmp (line, "KEYDATA", 7) && (line[7]==' '||!line[7]))
{
err = assuan_send_data (parm->ctx, parm->key, parm->keylen);
}
else
err = default_inq_cb (parm->ctrl, line);
return err;
}
/* Call the agent to import a key into the agent. */
gpg_error_t
agent_import_key (ctrl_t ctrl, const char *desc, const void *key, size_t keylen)
{
gpg_error_t err;
struct import_key_parm_s parm;
err = start_agent (ctrl, 0);
if (err)
return err;
if (desc)
{
char line[ASSUAN_LINELENGTH];
snprintf (line, DIM(line)-1, "SETKEYDESC %s", desc);
line[DIM(line)-1] = 0;
err = assuan_transact (agent_ctx, line,
NULL, NULL, NULL, NULL, NULL, NULL);
if (err)
return err;
}
parm.ctrl = ctrl;
parm.ctx = agent_ctx;
parm.key = key;
parm.keylen = keylen;
err = assuan_transact (agent_ctx, "IMPORT_KEY",
NULL, NULL, inq_import_key_parms, &parm, NULL, NULL);
return err;
}