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Testing pksign.c for access to PKCS#11 module.

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Scute and SoftHSMV2: RSA key works

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2023-02-22 16:13:21 +09:00
parent c82f6b6599
commit 0f5e9dea89
No known key found for this signature in database
GPG Key ID: 640114AF89DE6054
4 changed files with 324 additions and 125 deletions
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7
Makefile.am
View File

@ -87,6 +87,11 @@ scd = scd
else
scd =
endif
if BUILD_TKDAEMON
tkd = tkd
else
tkd =
endif
if BUILD_G13
g13 = g13
else
@ -114,7 +119,7 @@ tpm2d =
endif
SUBDIRS = m4 common regexp kbx \
${gpg} ${sm} ${agent} ${scd} ${g13} ${dirmngr} \
${gpg} ${sm} ${agent} ${scd} ${tkd} ${g13} ${dirmngr} \
tools po ${doc} ${tests} ${tpm2d}
dist_doc_DATA = README

3
configure.ac
View File

@ -125,6 +125,7 @@ GNUPG_BUILD_PROGRAM(gpgsm, yes)
# The agent is a required part and can't be disabled anymore.
build_agent=yes
GNUPG_BUILD_PROGRAM(scdaemon, yes)
GNUPG_BUILD_PROGRAM(tkdaemon, yes)
GNUPG_BUILD_PROGRAM(g13, no)
GNUPG_BUILD_PROGRAM(dirmngr, yes)
GNUPG_BUILD_PROGRAM(keyboxd, yes)
@ -1840,6 +1841,7 @@ AM_CONDITIONAL(BUILD_GPG, test "$build_gpg" = "yes")
AM_CONDITIONAL(BUILD_GPGSM, test "$build_gpgsm" = "yes")
AM_CONDITIONAL(BUILD_AGENT, test "$build_agent" = "yes")
AM_CONDITIONAL(BUILD_SCDAEMON, test "$build_scdaemon" = "yes")
AM_CONDITIONAL(BUILD_TKDAEMON, test "$build_tkdaemon" = "yes")
AM_CONDITIONAL(BUILD_G13, test "$build_g13" = "yes")
AM_CONDITIONAL(BUILD_DIRMNGR, test "$build_dirmngr" = "yes")
AM_CONDITIONAL(BUILD_KEYBOXD, test "$build_keyboxd" = "yes")
@ -2088,6 +2090,7 @@ g10/Makefile
sm/Makefile
agent/Makefile
scd/Makefile
tkd/Makefile
tpm2d/Makefile
g13/Makefile
dirmngr/Makefile

44
tkd/Makefile.am Normal file
View File

@ -0,0 +1,44 @@
# Copyright (C) 2002, 2003, 2005 Free Software Foundation, Inc.
#
# This file is part of GnuPG.
#
# GnuPG is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# GnuPG is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, see <https://www.gnu.org/licenses/>.
# SPDX-License-Identifier: GPL-3.0-or-later
EXTRA_DIST =
# libexec_PROGRAMS = tkdaemon
noinst_PROGRAMS = pksign
AM_CPPFLAGS =
AM_CFLAGS = $(LIBGCRYPT_CFLAGS) \
$(KSBA_CFLAGS) $(LIBASSUAN_CFLAGS) $(NPTH_CFLAGS)
include $(top_srcdir)/am/cmacros.am
tkdaemon_SOURCES = \
tkdaemon.c tkdaemon.h \
command.c
tkdaemon_LDADD = $(libcommonpth) \
$(LIBGCRYPT_LIBS) $(LIBASSUAN_LIBS) $(NPTH_LIBS) \
$(GPG_ERROR_LIBS) \
$(LIBINTL) $(DL_LIBS) $(NETLIBS) $(LIBICONV)
pksign_LDADD = $(libcommonpth) \
$(LIBGCRYPT_LIBS) $(LIBASSUAN_LIBS) $(NPTH_LIBS) \
$(GPG_ERROR_LIBS) \
$(LIBINTL) $(DL_LIBS) $(NETLIBS) $(LIBICONV)

397
tkd/pksign.c
View File

@ -1,34 +1,57 @@
#include <config.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <dlfcn.h>
#include <gpg-error.h>
#include <gcrypt.h>
#include "../common/util.h"
#include "pkcs11.h"
/*
* For now, we don't COMPUTE_KEYGRIP, assuming Scute.
* ... which used the ID as keygrip.
*/
#ifdef COMPUTE_KEYGRIP
static void
compute_keygrip_rsa (char *keygrip,
const char *modulus, unsigned long modulus_len,
const char *exponent, unsigned long exponent_len)
{
;
gpg_error_t err;
gcry_sexp_t s_pkey = NULL;
const char *format = "(public-key(rsa(n%b)(e%b)))";
unsigned char grip[20];
err = gcry_sexp_build (&s_pkey, NULL, format,
(int)modulus_len, modulus,
(int)exponent_len, exponent);
if (!err && !gcry_pk_get_keygrip (s_pkey, grip))
err = gpg_error (GPG_ERR_INTERNAL);
else
{
gcry_sexp_release (s_pkey);
bin2hex (grip, 20, keygrip);
}
}
static void
compute_keygrip_ec (char *keygrip,
const char *oid, unsigned long oid_len,
const char *ecpoint, unsigned long ecpoing_len)
compute_keygrip_ec (char *keygrip, const char *curve,
const char *ecpoint, unsigned long ecpoint_len)
{
;
gpg_error_t err;
gcry_sexp_t s_pkey = NULL;
const char *format = "(public-key(ecc(curve %s)(q%b)))";
unsigned char grip[20];
err = gcry_sexp_build (&s_pkey, NULL, format, curve, (int)ecpoint_len,
ecpoint);
if (!err && !gcry_pk_get_keygrip (s_pkey, grip))
err = gpg_error (GPG_ERR_INTERNAL);
else
{
gcry_sexp_release (s_pkey);
bin2hex (grip, 20, keygrip);
}
#endif
}
#define ck_function_list _CK_FUNCTION_LIST
#define ck_token_info _CK_TOKEN_INFO
@ -50,7 +73,6 @@ compute_keygrip_ec (char *keygrip,
* session -> key_list -> key
*
*/
#define KEYGRIP_LEN (40+1)
/*
* Major use cases:
@ -72,9 +94,12 @@ struct key {
struct token *token; /* Back pointer. */
int valid;
ck_object_handle_t p11_keyid;
char keygrip[KEYGRIP_LEN];
char keygrip[2*KEYGRIP_LEN+1];
int key_type;
/* Possibly, ID, LABEL, etc. */
unsigned char label[256];
unsigned long label_len;
unsigned char id[256];
unsigned long id_len;
/* Allowed mechanisms??? */
};
@ -178,7 +203,7 @@ struct p11dev {
int d;
};
static struct p11dev priv;
static struct p11dev p11_priv;
static unsigned long
notify_cb (ck_session_handle_t session,
@ -205,7 +230,7 @@ open_session (struct token *token)
session_flags = session_flags | CKF_SERIAL_SESSION;
err = ck->f->C_OpenSession (slot_id, session_flags,
(void *)&priv, notify_cb, &session_handle);
(void *)&p11_priv, notify_cb, &session_handle);
if (err)
{
printf ("open_session: %d\n", err);
@ -271,31 +296,123 @@ logout (struct token *token)
}
static long
detect_key (int try_private, struct token *token)
examine_public_key (struct token *token, struct key *k, unsigned long keytype,
int update_keyid, ck_object_handle_t obj)
{
unsigned long err = 0;
struct cryptoki *ck = token->ck;
unsigned char modulus[1024];
unsigned char exponent[8];
unsigned char ecparams[256];
unsigned char ecpoint[256];
struct ck_attribute templ[3];
unsigned long mechanisms[3];
int i;
templ[0].type = CKA_ALLOWED_MECHANISMS;
templ[0].pValue = (void *)mechanisms;
templ[0].ulValueLen = sizeof (mechanisms);
if (keytype == CKK_RSA)
{
k->valid = 1;
if (update_keyid)
k->p11_keyid = obj;
k->key_type = KEY_RSA;
templ[1].type = CKA_MODULUS;
templ[1].pValue = (void *)modulus;
templ[1].ulValueLen = sizeof (modulus);
templ[2].type = CKA_PUBLIC_EXPONENT;
templ[2].pValue = (void *)exponent;
templ[2].ulValueLen = sizeof (exponent);
err = ck->f->C_GetAttributeValue (token->session, obj, templ, 3);
if (err)
{
k->valid = -1;
return 1;
}
if ((modulus[0] & 0x80))
{
memmove (modulus+1, modulus, templ[1].ulValueLen);
templ[1].ulValueLen++;
modulus[0] = 0;
}
/* Found a RSA key. */
printf ("RSA: %d %d %d\n",
templ[0].ulValueLen,
templ[1].ulValueLen,
templ[2].ulValueLen);
puts ("Public key:");
compute_keygrip_rsa (k->keygrip,
modulus, templ[1].ulValueLen,
exponent, templ[2].ulValueLen);
puts (k->keygrip);
}
else if (keytype == CKK_EC)
{
char *curve_oid = NULL;
const char *curve;
k->valid = 1;
if (update_keyid)
k->p11_keyid = obj;
k->key_type = KEY_EC;
templ[1].type = CKA_EC_PARAMS;
templ[1].pValue = ecparams;
templ[1].ulValueLen = sizeof (ecparams);
templ[2].type = CKA_EC_POINT;
templ[2].pValue = (void *)ecpoint;
templ[2].ulValueLen = sizeof (ecpoint);
err = ck->f->C_GetAttributeValue (token->session, obj, templ, 3);
if (err)
{
k->valid = -1;
return 1;
}
/* Found an ECC key. */
printf ("ECC: %d %d %d\n",
templ[0].ulValueLen,
templ[1].ulValueLen,
templ[2].ulValueLen);
curve_oid = openpgp_oidbuf_to_str (ecparams+1, templ[1].ulValueLen-1);
curve = openpgp_oid_to_curve (curve_oid, 1);
xfree (curve_oid);
puts ("Public key:");
puts (curve);
compute_keygrip_ec (k->keygrip, curve, ecpoint, templ[2].ulValueLen);
puts (k->keygrip);
}
return 0;
}
static long
detect_private_keys (struct token *token)
{
unsigned long err = 0;
struct cryptoki *ck = token->ck;
struct ck_attribute templ[8];
unsigned char label[256];
unsigned long class;
unsigned long key_type;
unsigned long mechanisms[3];
unsigned char id[256];
unsigned char modulus[1024];
unsigned char exponent[8];
unsigned char ecparams[256];
unsigned char ecpoint[256];
unsigned long keytype;
unsigned long cnt = 0;
ck_object_handle_t obj;
int i;
if (try_private)
class = CKO_PRIVATE_KEY;
else
class = CKO_PUBLIC_KEY;
templ[0].type = CKA_CLASS;
templ[0].pValue = (void *)&class;
templ[0].ulValueLen = sizeof (class);
@ -313,6 +430,81 @@ detect_key (int try_private, struct token *token)
k->token = token;
k->valid = 0;
/* Portable way to get objects... is get it one by one. */
err = ck->f->C_FindObjects (token->session, &obj, 1, &any);
if (err || any == 0)
break;
templ[0].type = CKA_KEY_TYPE;
templ[0].pValue = &keytype;
templ[0].ulValueLen = sizeof (keytype);
templ[1].type = CKA_LABEL;
templ[1].pValue = (void *)k->label;
templ[1].ulValueLen = sizeof (k->label) - 1;
templ[2].type = CKA_ID;
templ[2].pValue = (void *)k->id;
templ[2].ulValueLen = sizeof (k->id) - 1;
err = ck->f->C_GetAttributeValue (token->session, obj, templ, 3);
if (err)
{
continue;
}
cnt++;
k->label_len = templ[1].ulValueLen;
k->label[k->label_len] = 0;
k->id_len = templ[2].ulValueLen;
k->id[k->id_len] = 0;
printf ("handle: %ld label: %s key_type: %d id: %s\n",
obj, k->label, keytype, k->id);
if (examine_public_key (token, k, keytype, 1, obj))
continue;
}
token->num_keys = cnt;
err = ck->f->C_FindObjectsFinal (token->session);
if (err)
{
return -1;
}
}
}
static long
check_public_keys (struct token *token)
{
unsigned long err = 0;
struct cryptoki *ck = token->ck;
struct ck_attribute templ[8];
unsigned char label[256];
unsigned long class;
unsigned long keytype;
unsigned char id[256];
ck_object_handle_t obj;
int i;
class = CKO_PUBLIC_KEY;
templ[0].type = CKA_CLASS;
templ[0].pValue = (void *)&class;
templ[0].ulValueLen = sizeof (class);
err = ck->f->C_FindObjectsInit (token->session, templ, 1);
if (!err)
{
while (TRUE)
{
unsigned long any;
struct key *k = NULL;
/* Portable way to get objects... is get it one by one. */
err = ck->f->C_FindObjects (token->session, &obj, 1, &any);
if (err || any == 0)
@ -323,8 +515,8 @@ detect_key (int try_private, struct token *token)
templ[0].ulValueLen = sizeof (label);
templ[1].type = CKA_KEY_TYPE;
templ[1].pValue = &key_type;
templ[1].ulValueLen = sizeof (key_type);
templ[1].pValue = &keytype;
templ[1].ulValueLen = sizeof (keytype);
templ[2].type = CKA_ID;
templ[2].pValue = (void *)id;
@ -339,102 +531,31 @@ detect_key (int try_private, struct token *token)
label[templ[0].ulValueLen] = 0;
id[templ[2].ulValueLen] = 0;
printf ("handle: %ld label: %s key_type: %d id: %s\n",
obj, label, key_type, id);
templ[0].type = CKA_ALLOWED_MECHANISMS;
templ[0].pValue = (void *)mechanisms;
templ[0].ulValueLen = sizeof (mechanisms);
if (key_type == CKK_RSA)
/* Locate matching private key. */
for (i = 0; i < token->num_keys; i++)
{
templ[1].type = CKA_MODULUS;
templ[1].pValue = (void *)modulus;
templ[1].ulValueLen = sizeof (modulus);
k = &token->key_list[i];
templ[2].type = CKA_PUBLIC_EXPONENT;
templ[2].pValue = (void *)exponent;
templ[2].ulValueLen = sizeof (exponent);
if (k->valid == -1
&& k->label_len == templ[0].ulValueLen
&& memcmp (label, k->label, k->label_len) == 0
&& ((keytype == CKK_RSA && k->key_type == KEY_RSA)
|| (keytype == CKK_EC && k->key_type == KEY_EC))
&& k->id_len == templ[0].ulValueLen
&& memcmp (id, k->id, k->id_len) == 0)
break;
}
err = ck->f->C_GetAttributeValue (token->session, obj, templ, 3);
if (err)
{
if (i == token->num_keys)
continue;
printf ("pub: handle: %ld label: %s key_type: %d id: %s\n",
obj, label, keytype, id);
if (examine_public_key (token, k, keytype, 0, obj))
continue;
}
/* Found a RSA key. */
printf ("RSA: %d %d %d\n",
templ[0].ulValueLen,
templ[1].ulValueLen,
templ[2].ulValueLen);
puts ("Public key:");
for (i = 0; i < templ[1].ulValueLen; i++)
{
printf ("%02x", modulus[i]);
if ((i % 16) == 15)
puts ("");
}
puts ("");
k->valid = 1;
k->p11_keyid = obj;
k->key_type = KEY_RSA;
#ifdef COMPUTE_KEYGRIP
compute_keygrip_rsa (k->keygrip,
modulus, templ[0].ulValueLen,
exponent, templ[1].ulValueLen);
#else
memcpy (k->keygrip, id, 40);
k->keygrip[40] = 0;
#endif
cnt++;
}
else if (key_type == CKK_EC)
{
templ[1].type = CKA_EC_PARAMS;
templ[1].pValue = ecparams;
templ[1].ulValueLen = sizeof (ecparams);
templ[2].type = CKA_EC_POINT;
templ[2].pValue = (void *)ecpoint;
templ[2].ulValueLen = sizeof (ecpoint);
err = ck->f->C_GetAttributeValue (token->session, obj, templ, 3);
if (err)
{
continue;
}
/* Found an ECC key. */
printf ("ECC: %d %d %d\n",
templ[0].ulValueLen,
templ[1].ulValueLen,
templ[2].ulValueLen);
puts ("Public key:");
for (i = 0; i < templ[2].ulValueLen; i++)
{
printf ("%02x", ecpoint[i]);
if ((i % 16) == 15)
puts ("");
}
puts ("");
k->valid = 1;
k->p11_keyid = obj;
k->key_type = KEY_EC;
#ifdef COMPUTE_KEYGRIP
compute_keygrip_ec (k->keygrip,
ecparams, templ[1].ulValueLen,
ecpoint, templ[2].ulValueLen);
#else
memcpy (k->keygrip, id, 40);
k->keygrip[40] = 0;
#endif
cnt++;
}
}
token->num_keys = cnt;
err = ck->f->C_FindObjectsFinal (token->session);
if (err)
{
@ -512,13 +633,31 @@ static long
learn_keys (struct token *token)
{
unsigned long err = 0;
int i;
/* Detect private keys on the token. */
detect_private_keys (token);
/*
* In some implementations (EC key on SoftHSMv2, for example),
* public key is not available in CKO_PRIVATE_KEY objects.
*
* So, try to examine CKO_PUBLIC_KEY objects, if it provides
* public keys.
*/
check_public_keys (token);
for (i = 0; i < token->num_keys; i++)
{
struct key *k = &token->key_list[i];
if (k->valid == -1)
k->valid = 0;
}
detect_key (1, token);
#if 0
if (token->num_keys == 0)
detect_key (0, token);
#endif
get_certificate (token);
#endif
return 0;
}
@ -539,9 +678,13 @@ find_key (struct cryptoki *ck, const char *keygrip, struct key **r_key)
{
struct key *k = &token->key_list[j];
if (k->valid != 1)
continue;
if (memcmp (k->keygrip, keygrip, 40) == 0)
{
*r_key = k;
printf ("found a key at %d:%d\n", i, j);
return 0;
}
}
@ -677,6 +820,10 @@ main (int argc, const char *argv[])
unsigned char sig[1024];
unsigned long siglen = sizeof (sig);
printf ("key object id: %d\n", k->p11_keyid);
printf ("key type: %d\n", k->key_type);
puts (k->keygrip);
r = do_pksign (k, "test test", 9, sig, &siglen);
if (!r)
{