960 lines
23 KiB
C
960 lines
23 KiB
C
/*
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* Copyright (C) 2011-2016 Tobias Brunner
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* HSR Hochschule fuer Technik Rapperswil
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*
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* Copyright (C) 2010 Martin Willi
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* Copyright (C) 2010 revosec AG
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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/*
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* Copyright (C) 2016 EDF S.A.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "pkcs11_private_key.h"
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#include "pkcs11_library.h"
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#include "pkcs11_manager.h"
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#include "pkcs11_public_key.h"
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#include <utils/debug.h>
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#include <asn1/asn1.h>
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typedef struct private_pkcs11_private_key_t private_pkcs11_private_key_t;
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/**
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* Private data of an pkcs11_private_key_t object.
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*/
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struct private_pkcs11_private_key_t {
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/**
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* Public pkcs11_private_key_t interface.
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*/
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pkcs11_private_key_t public;
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/**
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* PKCS#11 module
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*/
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pkcs11_library_t *lib;
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/**
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* Slot the token is in
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*/
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CK_SLOT_ID slot;
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/**
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* Token session
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*/
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CK_SESSION_HANDLE session;
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/**
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* Key object on the token
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*/
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CK_OBJECT_HANDLE object;
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/**
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* Key requires reauthentication for each signature/decryption
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*/
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CK_BBOOL reauth;
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/**
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* Keyid of the key we use
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*/
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identification_t *keyid;
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/**
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* Associated public key
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*/
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public_key_t *pubkey;
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/**
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* References to this key
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*/
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refcount_t ref;
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/**
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* Type of this private key
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*/
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key_type_t type;
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};
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METHOD(private_key_t, get_type, key_type_t,
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private_pkcs11_private_key_t *this)
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{
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return this->type;
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}
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METHOD(private_key_t, get_keysize, int,
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private_pkcs11_private_key_t *this)
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{
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return this->pubkey->get_keysize(this->pubkey);
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}
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/**
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* Check if a token supports the given mechanism.
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*/
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static bool is_mechanism_supported(pkcs11_library_t *p11, CK_SLOT_ID slot,
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const CK_MECHANISM_PTR mech)
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{
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enumerator_t *mechs;
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CK_MECHANISM_TYPE type;
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mechs = p11->create_mechanism_enumerator(p11, slot);
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while (mechs->enumerate(mechs, &type, NULL))
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{
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if (type == mech->mechanism)
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{
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mechs->destroy(mechs);
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return TRUE;
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}
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}
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mechs->destroy(mechs);
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return FALSE;
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}
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/*
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* Described in header
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*/
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CK_MECHANISM_PTR pkcs11_signature_scheme_to_mech(pkcs11_library_t *p11,
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CK_SLOT_ID slot,
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signature_scheme_t scheme,
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key_type_t type, size_t keylen,
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hash_algorithm_t *hash)
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{
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static struct {
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signature_scheme_t scheme;
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CK_MECHANISM mechanism;
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key_type_t type;
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size_t keylen;
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hash_algorithm_t hash;
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} mappings[] = {
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{SIGN_RSA_EMSA_PKCS1_NULL, {CKM_RSA_PKCS, NULL, 0},
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KEY_RSA, 0, HASH_UNKNOWN},
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{SIGN_RSA_EMSA_PKCS1_SHA2_256, {CKM_SHA256_RSA_PKCS, NULL, 0},
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KEY_RSA, 0, HASH_UNKNOWN},
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{SIGN_RSA_EMSA_PKCS1_SHA2_256, {CKM_RSA_PKCS, NULL, 0},
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KEY_RSA, 0, HASH_SHA256},
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{SIGN_RSA_EMSA_PKCS1_SHA2_384, {CKM_SHA384_RSA_PKCS, NULL, 0},
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KEY_RSA, 0, HASH_UNKNOWN},
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{SIGN_RSA_EMSA_PKCS1_SHA2_384, {CKM_RSA_PKCS, NULL, 0},
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KEY_RSA, 0, HASH_SHA384},
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{SIGN_RSA_EMSA_PKCS1_SHA2_512, {CKM_SHA512_RSA_PKCS, NULL, 0},
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KEY_RSA, 0, HASH_UNKNOWN},
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{SIGN_RSA_EMSA_PKCS1_SHA2_512, {CKM_RSA_PKCS, NULL, 0},
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KEY_RSA, 0, HASH_SHA512},
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{SIGN_RSA_EMSA_PKCS1_SHA1, {CKM_SHA1_RSA_PKCS, NULL, 0},
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KEY_RSA, 0, HASH_UNKNOWN},
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{SIGN_RSA_EMSA_PKCS1_SHA1, {CKM_RSA_PKCS, NULL, 0},
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KEY_RSA, 0, HASH_SHA1},
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{SIGN_RSA_EMSA_PKCS1_MD5, {CKM_MD5_RSA_PKCS, NULL, 0},
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KEY_RSA, 0, HASH_UNKNOWN},
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{SIGN_ECDSA_WITH_NULL, {CKM_ECDSA, NULL, 0},
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KEY_ECDSA, 0, HASH_UNKNOWN},
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{SIGN_ECDSA_WITH_SHA1_DER, {CKM_ECDSA_SHA1, NULL, 0},
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KEY_ECDSA, 0, HASH_UNKNOWN},
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{SIGN_ECDSA_WITH_SHA256_DER, {CKM_ECDSA, NULL, 0},
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KEY_ECDSA, 0, HASH_SHA256},
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{SIGN_ECDSA_WITH_SHA384_DER, {CKM_ECDSA, NULL, 0},
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KEY_ECDSA, 0, HASH_SHA384},
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{SIGN_ECDSA_WITH_SHA512_DER, {CKM_ECDSA, NULL, 0},
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KEY_ECDSA, 0, HASH_SHA512},
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{SIGN_ECDSA_256, {CKM_ECDSA, NULL, 0},
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KEY_ECDSA, 256, HASH_SHA256},
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{SIGN_ECDSA_384, {CKM_ECDSA, NULL, 0},
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KEY_ECDSA, 384, HASH_SHA384},
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{SIGN_ECDSA_521, {CKM_ECDSA, NULL, 0},
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KEY_ECDSA, 521, HASH_SHA512},
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};
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int i;
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for (i = 0; i < countof(mappings); i++)
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{
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if (mappings[i].scheme == scheme)
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{
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size_t len = mappings[i].keylen;
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if (mappings[i].type != type || (len && keylen != len) ||
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!is_mechanism_supported(p11, slot, &mappings[i].mechanism))
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{
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continue;
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}
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if (hash)
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{
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*hash = mappings[i].hash;
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}
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return &mappings[i].mechanism;
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}
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}
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return NULL;
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}
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/**
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* See header.
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*/
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CK_MECHANISM_PTR pkcs11_encryption_scheme_to_mech(encryption_scheme_t scheme)
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{
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static struct {
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encryption_scheme_t scheme;
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CK_MECHANISM mechanism;
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} mappings[] = {
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{ENCRYPT_RSA_PKCS1, {CKM_RSA_PKCS, NULL, 0}},
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{ENCRYPT_RSA_OAEP_SHA1, {CKM_RSA_PKCS_OAEP, NULL, 0}},
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};
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int i;
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for (i = 0; i < countof(mappings); i++)
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{
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if (mappings[i].scheme == scheme)
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{
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return &mappings[i].mechanism;
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}
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}
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return NULL;
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}
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/**
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* Reauthenticate to do a signature
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*/
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static bool reauth(private_pkcs11_private_key_t *this,
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CK_SESSION_HANDLE session)
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{
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enumerator_t *enumerator;
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shared_key_t *shared;
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chunk_t pin;
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CK_RV rv;
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bool found = FALSE, success = FALSE;
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enumerator = lib->credmgr->create_shared_enumerator(lib->credmgr,
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SHARED_PIN, this->keyid, NULL);
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while (enumerator->enumerate(enumerator, &shared, NULL, NULL))
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{
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found = TRUE;
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pin = shared->get_key(shared);
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rv = this->lib->f->C_Login(session, CKU_CONTEXT_SPECIFIC,
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pin.ptr, pin.len);
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if (rv == CKR_OK)
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{
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success = TRUE;
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break;
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}
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DBG1(DBG_CFG, "reauthentication login failed: %N", ck_rv_names, rv);
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}
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enumerator->destroy(enumerator);
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if (!found)
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{
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DBG1(DBG_CFG, "private key requires reauthentication, but no PIN found");
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return FALSE;
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}
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return success;
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}
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METHOD(private_key_t, sign, bool,
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private_pkcs11_private_key_t *this, signature_scheme_t scheme, void *params,
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chunk_t data, chunk_t *signature)
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{
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CK_MECHANISM_PTR mechanism;
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CK_SESSION_HANDLE session;
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CK_BYTE_PTR buf;
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CK_ULONG len;
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CK_RV rv;
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hash_algorithm_t hash_alg;
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chunk_t hash = chunk_empty;
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mechanism = pkcs11_signature_scheme_to_mech(this->lib, this->slot, scheme,
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this->type, get_keysize(this),
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&hash_alg);
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if (!mechanism)
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{
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DBG1(DBG_LIB, "signature scheme %N not supported",
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signature_scheme_names, scheme);
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return FALSE;
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}
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rv = this->lib->f->C_OpenSession(this->slot, CKF_SERIAL_SESSION, NULL, NULL,
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&session);
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if (rv != CKR_OK)
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{
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DBG1(DBG_CFG, "opening PKCS#11 session failed: %N", ck_rv_names, rv);
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return FALSE;
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}
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rv = this->lib->f->C_SignInit(session, mechanism, this->object);
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if (this->reauth && !reauth(this, session))
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{
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this->lib->f->C_CloseSession(session);
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return FALSE;
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}
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if (rv != CKR_OK)
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{
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this->lib->f->C_CloseSession(session);
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DBG1(DBG_LIB, "C_SignInit() failed: %N", ck_rv_names, rv);
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return FALSE;
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}
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if (hash_alg != HASH_UNKNOWN)
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{
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hasher_t *hasher;
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hasher = lib->crypto->create_hasher(lib->crypto, hash_alg);
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if (!hasher || !hasher->allocate_hash(hasher, data, &hash))
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{
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DESTROY_IF(hasher);
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this->lib->f->C_CloseSession(session);
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return FALSE;
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}
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hasher->destroy(hasher);
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switch (scheme)
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{
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case SIGN_RSA_EMSA_PKCS1_SHA1:
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case SIGN_RSA_EMSA_PKCS1_SHA2_256:
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case SIGN_RSA_EMSA_PKCS1_SHA2_384:
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case SIGN_RSA_EMSA_PKCS1_SHA2_512:
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/* encode PKCS#1 digestInfo if the token does not support it */
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hash = asn1_wrap(ASN1_SEQUENCE, "mm",
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asn1_algorithmIdentifier(
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hasher_algorithm_to_oid(hash_alg)),
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asn1_wrap(ASN1_OCTET_STRING, "m", hash));
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break;
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default:
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break;
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}
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data = hash;
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}
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len = (get_keysize(this) + 7) / 8;
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if (this->type == KEY_ECDSA)
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{ /* signature is twice the length of the base point order */
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len *= 2;
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}
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buf = malloc(len);
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rv = this->lib->f->C_Sign(session, data.ptr, data.len, buf, &len);
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this->lib->f->C_CloseSession(session);
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chunk_free(&hash);
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if (rv != CKR_OK)
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{
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DBG1(DBG_LIB, "C_Sign() failed: %N", ck_rv_names, rv);
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free(buf);
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return FALSE;
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}
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switch (scheme)
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{
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case SIGN_ECDSA_WITH_SHA1_DER:
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case SIGN_ECDSA_WITH_SHA256_DER:
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case SIGN_ECDSA_WITH_SHA384_DER:
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case SIGN_ECDSA_WITH_SHA512_DER:
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{
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chunk_t r, s;
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/* return an ASN.1 encoded sequence of integers r and s, removing
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* any zero-padding */
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len /= 2;
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r = chunk_skip_zero(chunk_create(buf, len));
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s = chunk_skip_zero(chunk_create(buf+len, len));
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*signature = asn1_wrap(ASN1_SEQUENCE, "mm",
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asn1_integer("c", r), asn1_integer("c", s));
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free(buf);
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break;
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}
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default:
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*signature = chunk_create(buf, len);
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break;
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}
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return TRUE;
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}
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METHOD(private_key_t, decrypt, bool,
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private_pkcs11_private_key_t *this, encryption_scheme_t scheme,
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chunk_t crypt, chunk_t *plain)
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{
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CK_MECHANISM_PTR mechanism;
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CK_SESSION_HANDLE session;
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CK_BYTE_PTR buf;
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CK_ULONG len;
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CK_RV rv;
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mechanism = pkcs11_encryption_scheme_to_mech(scheme);
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if (!mechanism)
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{
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DBG1(DBG_LIB, "encryption scheme %N not supported",
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encryption_scheme_names, scheme);
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return FALSE;
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}
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rv = this->lib->f->C_OpenSession(this->slot, CKF_SERIAL_SESSION, NULL, NULL,
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&session);
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if (rv != CKR_OK)
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{
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DBG1(DBG_CFG, "opening PKCS#11 session failed: %N", ck_rv_names, rv);
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return FALSE;
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}
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rv = this->lib->f->C_DecryptInit(session, mechanism, this->object);
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if (this->reauth && !reauth(this, session))
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{
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this->lib->f->C_CloseSession(session);
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return FALSE;
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}
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if (rv != CKR_OK)
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{
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this->lib->f->C_CloseSession(session);
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DBG1(DBG_LIB, "C_DecryptInit() failed: %N", ck_rv_names, rv);
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return FALSE;
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}
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len = (get_keysize(this) + 7) / 8;
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buf = malloc(len);
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rv = this->lib->f->C_Decrypt(session, crypt.ptr, crypt.len, buf, &len);
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this->lib->f->C_CloseSession(session);
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if (rv != CKR_OK)
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{
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DBG1(DBG_LIB, "C_Decrypt() failed: %N", ck_rv_names, rv);
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free(buf);
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return FALSE;
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}
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*plain = chunk_create(buf, len);
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return TRUE;
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}
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METHOD(private_key_t, get_public_key, public_key_t*,
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private_pkcs11_private_key_t *this)
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{
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return this->pubkey->get_ref(this->pubkey);
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}
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METHOD(private_key_t, get_fingerprint, bool,
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private_pkcs11_private_key_t *this, cred_encoding_type_t type,
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chunk_t *fingerprint)
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{
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return this->pubkey->get_fingerprint(this->pubkey, type, fingerprint);
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}
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METHOD(private_key_t, get_encoding, bool,
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private_pkcs11_private_key_t *this, cred_encoding_type_t type,
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chunk_t *encoding)
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{
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return FALSE;
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}
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METHOD(private_key_t, get_ref, private_key_t*,
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private_pkcs11_private_key_t *this)
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{
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ref_get(&this->ref);
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return &this->public.key;
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}
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METHOD(private_key_t, destroy, void,
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private_pkcs11_private_key_t *this)
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{
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if (ref_put(&this->ref))
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{
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if (this->pubkey)
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{
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this->pubkey->destroy(this->pubkey);
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}
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this->keyid->destroy(this->keyid);
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this->lib->f->C_CloseSession(this->session);
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free(this);
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}
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}
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/**
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* Find the PKCS#11 library by its friendly name
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*/
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static pkcs11_library_t* find_lib(char *module)
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{
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pkcs11_manager_t *manager;
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enumerator_t *enumerator;
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pkcs11_library_t *p11, *found = NULL;
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CK_SLOT_ID slot;
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manager = lib->get(lib, "pkcs11-manager");
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if (!manager)
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{
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return NULL;
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}
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enumerator = manager->create_token_enumerator(manager);
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while (enumerator->enumerate(enumerator, &p11, &slot))
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{
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if (streq(module, p11->get_name(p11)))
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{
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found = p11;
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break;
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}
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}
|
|
enumerator->destroy(enumerator);
|
|
return found;
|
|
}
|
|
|
|
/**
|
|
* Find the PKCS#11 lib having a keyid, and optionally a slot
|
|
*/
|
|
static pkcs11_library_t* find_lib_by_keyid(chunk_t keyid, int *slot,
|
|
CK_OBJECT_CLASS class)
|
|
{
|
|
pkcs11_manager_t *manager;
|
|
enumerator_t *enumerator;
|
|
pkcs11_library_t *p11, *found = NULL;
|
|
CK_SLOT_ID current;
|
|
|
|
manager = lib->get(lib, "pkcs11-manager");
|
|
if (!manager)
|
|
{
|
|
return NULL;
|
|
}
|
|
enumerator = manager->create_token_enumerator(manager);
|
|
while (enumerator->enumerate(enumerator, &p11, ¤t))
|
|
{
|
|
if (*slot == -1 || *slot == current)
|
|
{
|
|
/* look for a pubkey/cert, it is usually readable without login */
|
|
CK_ATTRIBUTE tmpl[] = {
|
|
{CKA_CLASS, &class, sizeof(class)},
|
|
{CKA_ID, keyid.ptr, keyid.len},
|
|
};
|
|
CK_OBJECT_HANDLE object;
|
|
CK_SESSION_HANDLE session;
|
|
CK_RV rv;
|
|
enumerator_t *keys;
|
|
|
|
rv = p11->f->C_OpenSession(current, CKF_SERIAL_SESSION, NULL, NULL,
|
|
&session);
|
|
if (rv != CKR_OK)
|
|
{
|
|
DBG1(DBG_CFG, "opening PKCS#11 session failed: %N",
|
|
ck_rv_names, rv);
|
|
continue;
|
|
}
|
|
keys = p11->create_object_enumerator(p11, session,
|
|
tmpl, countof(tmpl), NULL, 0);
|
|
if (keys->enumerate(keys, &object))
|
|
{
|
|
DBG1(DBG_CFG, "found key on PKCS#11 token '%s':%d",
|
|
p11->get_name(p11), current);
|
|
found = p11;
|
|
*slot = current;
|
|
}
|
|
keys->destroy(keys);
|
|
p11->f->C_CloseSession(session);
|
|
if (found)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
return found;
|
|
}
|
|
|
|
/**
|
|
* Find the PKCS#11 lib and CKA_ID of the certificate object of a given
|
|
* subjectKeyIdentifier and optional slot
|
|
*/
|
|
static pkcs11_library_t* find_lib_and_keyid_by_skid(chunk_t keyid_chunk,
|
|
chunk_t *ckaid, int *slot)
|
|
{
|
|
CK_OBJECT_CLASS class = CKO_CERTIFICATE;
|
|
CK_CERTIFICATE_TYPE type = CKC_X_509;
|
|
CK_ATTRIBUTE tmpl[] = {
|
|
{CKA_CLASS, &class, sizeof(class)},
|
|
{CKA_CERTIFICATE_TYPE, &type, sizeof(type)},
|
|
};
|
|
CK_ATTRIBUTE attr[] = {
|
|
{CKA_VALUE, NULL, 0},
|
|
{CKA_ID, NULL, 0},
|
|
};
|
|
CK_OBJECT_HANDLE object;
|
|
CK_SESSION_HANDLE session;
|
|
CK_RV rv;
|
|
pkcs11_manager_t *manager;
|
|
enumerator_t *enumerator, *certs;
|
|
identification_t *keyid;
|
|
pkcs11_library_t *p11, *found = NULL;
|
|
CK_SLOT_ID current;
|
|
linked_list_t *raw;
|
|
certificate_t *cert;
|
|
struct {
|
|
chunk_t value;
|
|
chunk_t ckaid;
|
|
} *entry;
|
|
|
|
manager = lib->get(lib, "pkcs11-manager");
|
|
if (!manager)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
keyid = identification_create_from_encoding(ID_KEY_ID, keyid_chunk);
|
|
/* store result in a temporary list, avoid recursive operation */
|
|
raw = linked_list_create();
|
|
|
|
enumerator = manager->create_token_enumerator(manager);
|
|
while (enumerator->enumerate(enumerator, &p11, ¤t))
|
|
{
|
|
if (*slot != -1 && *slot != current)
|
|
{
|
|
continue;
|
|
}
|
|
rv = p11->f->C_OpenSession(current, CKF_SERIAL_SESSION, NULL, NULL,
|
|
&session);
|
|
if (rv != CKR_OK)
|
|
{
|
|
DBG1(DBG_CFG, "opening PKCS#11 session failed: %N",
|
|
ck_rv_names, rv);
|
|
continue;
|
|
}
|
|
certs = p11->create_object_enumerator(p11, session, tmpl, countof(tmpl),
|
|
attr, countof(attr));
|
|
while (certs->enumerate(certs, &object))
|
|
{
|
|
INIT(entry,
|
|
.value = chunk_clone(
|
|
chunk_create(attr[0].pValue, attr[0].ulValueLen)),
|
|
.ckaid = chunk_clone(
|
|
chunk_create(attr[1].pValue, attr[1].ulValueLen)),
|
|
);
|
|
raw->insert_last(raw, entry);
|
|
}
|
|
certs->destroy(certs);
|
|
|
|
while (raw->remove_first(raw, (void**)&entry) == SUCCESS)
|
|
{
|
|
if (!found)
|
|
{
|
|
cert = lib->creds->create(lib->creds, CRED_CERTIFICATE,
|
|
CERT_X509, BUILD_BLOB_ASN1_DER,
|
|
entry->value, BUILD_END);
|
|
if (cert)
|
|
{
|
|
if (cert->has_subject(cert, keyid))
|
|
{
|
|
DBG1(DBG_CFG, "found cert with keyid '%#B' on PKCS#11 "
|
|
"token '%s':%d", &keyid_chunk, p11->get_name(p11),
|
|
current);
|
|
found = p11;
|
|
*ckaid = chunk_clone(entry->ckaid);
|
|
*slot = current;
|
|
}
|
|
cert->destroy(cert);
|
|
}
|
|
else
|
|
{
|
|
DBG1(DBG_CFG, "parsing cert with CKA_ID '%#B' on PKCS#11 "
|
|
"token '%s':%d failed", &entry->ckaid,
|
|
p11->get_name(p11), current);
|
|
}
|
|
}
|
|
chunk_free(&entry->value);
|
|
chunk_free(&entry->ckaid);
|
|
free(entry);
|
|
}
|
|
p11->f->C_CloseSession(session);
|
|
if (found)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
keyid->destroy(keyid);
|
|
raw->destroy(raw);
|
|
return found;
|
|
}
|
|
|
|
/**
|
|
* Find the key on the token
|
|
*/
|
|
static bool find_key(private_pkcs11_private_key_t *this, chunk_t keyid)
|
|
{
|
|
CK_OBJECT_CLASS class = CKO_PRIVATE_KEY;
|
|
CK_ATTRIBUTE tmpl[] = {
|
|
{CKA_CLASS, &class, sizeof(class)},
|
|
{CKA_ID, keyid.ptr, keyid.len},
|
|
};
|
|
CK_OBJECT_HANDLE object;
|
|
CK_KEY_TYPE type;
|
|
CK_BBOOL reauth = FALSE;
|
|
CK_ATTRIBUTE attr[] = {
|
|
{CKA_KEY_TYPE, &type, sizeof(type)},
|
|
{CKA_ALWAYS_AUTHENTICATE, &reauth, sizeof(reauth)},
|
|
};
|
|
enumerator_t *enumerator;
|
|
int count = countof(attr);
|
|
bool found = FALSE;
|
|
|
|
/* do not use CKA_ALWAYS_AUTHENTICATE if not supported */
|
|
if (!(this->lib->get_features(this->lib) & PKCS11_ALWAYS_AUTH_KEYS))
|
|
{
|
|
count--;
|
|
}
|
|
enumerator = this->lib->create_object_enumerator(this->lib,
|
|
this->session, tmpl, countof(tmpl), attr, count);
|
|
if (enumerator->enumerate(enumerator, &object))
|
|
{
|
|
this->type = KEY_RSA;
|
|
switch (type)
|
|
{
|
|
case CKK_ECDSA:
|
|
this->type = KEY_ECDSA;
|
|
/* fall-through */
|
|
case CKK_RSA:
|
|
this->reauth = reauth;
|
|
this->object = object;
|
|
found = TRUE;
|
|
break;
|
|
default:
|
|
DBG1(DBG_CFG, "PKCS#11 key type %d not supported", type);
|
|
break;
|
|
}
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
return found;
|
|
}
|
|
|
|
/**
|
|
* Find a PIN and try to log in
|
|
*/
|
|
static bool login(private_pkcs11_private_key_t *this, int slot)
|
|
{
|
|
enumerator_t *enumerator;
|
|
shared_key_t *shared;
|
|
chunk_t pin;
|
|
CK_RV rv;
|
|
CK_SESSION_INFO info;
|
|
bool found = FALSE, success = FALSE;
|
|
|
|
rv = this->lib->f->C_GetSessionInfo(this->session, &info);
|
|
if (rv != CKR_OK)
|
|
{
|
|
DBG1(DBG_CFG, "C_GetSessionInfo failed: %N", ck_rv_names, rv);
|
|
return FALSE;
|
|
}
|
|
if (info.state != CKS_RO_PUBLIC_SESSION &&
|
|
info.state != CKS_RW_PUBLIC_SESSION)
|
|
{ /* already logged in with another session, skip */
|
|
return TRUE;
|
|
}
|
|
|
|
enumerator = lib->credmgr->create_shared_enumerator(lib->credmgr,
|
|
SHARED_PIN, this->keyid, NULL);
|
|
while (enumerator->enumerate(enumerator, &shared, NULL, NULL))
|
|
{
|
|
found = TRUE;
|
|
pin = shared->get_key(shared);
|
|
rv = this->lib->f->C_Login(this->session, CKU_USER, pin.ptr, pin.len);
|
|
if (rv == CKR_OK)
|
|
{
|
|
success = TRUE;
|
|
break;
|
|
}
|
|
DBG1(DBG_CFG, "login to '%s':%d failed: %N",
|
|
this->lib->get_name(this->lib), slot, ck_rv_names, rv);
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
|
|
if (!found)
|
|
{
|
|
DBG1(DBG_CFG, "no PIN found for PKCS#11 key %Y", this->keyid);
|
|
return FALSE;
|
|
}
|
|
return success;
|
|
}
|
|
|
|
/**
|
|
* Get a public key from a certificate with a given key ID.
|
|
*/
|
|
static public_key_t* find_pubkey_in_certs(private_pkcs11_private_key_t *this,
|
|
chunk_t keyid)
|
|
{
|
|
CK_OBJECT_CLASS class = CKO_CERTIFICATE;
|
|
CK_CERTIFICATE_TYPE type = CKC_X_509;
|
|
CK_ATTRIBUTE tmpl[] = {
|
|
{CKA_CLASS, &class, sizeof(class)},
|
|
{CKA_CERTIFICATE_TYPE, &type, sizeof(type)},
|
|
{CKA_ID, keyid.ptr, keyid.len},
|
|
};
|
|
CK_OBJECT_HANDLE object;
|
|
CK_ATTRIBUTE attr[] = {
|
|
{CKA_VALUE, NULL, 0},
|
|
};
|
|
enumerator_t *enumerator;
|
|
chunk_t data = chunk_empty;
|
|
public_key_t *key = NULL;
|
|
certificate_t *cert;
|
|
|
|
enumerator = this->lib->create_object_enumerator(this->lib, this->session,
|
|
tmpl, countof(tmpl), attr, countof(attr));
|
|
if (enumerator->enumerate(enumerator, &object))
|
|
{
|
|
data = chunk_clone(chunk_create(attr[0].pValue, attr[0].ulValueLen));
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
|
|
if (data.ptr)
|
|
{
|
|
cert = lib->creds->create(lib->creds, CRED_CERTIFICATE, CERT_X509,
|
|
BUILD_BLOB_ASN1_DER, data, BUILD_END);
|
|
free(data.ptr);
|
|
if (cert)
|
|
{
|
|
key = cert->get_public_key(cert);
|
|
cert->destroy(cert);
|
|
}
|
|
}
|
|
return key;
|
|
}
|
|
|
|
/**
|
|
* See header.
|
|
*/
|
|
pkcs11_private_key_t *pkcs11_private_key_connect(key_type_t type, va_list args)
|
|
{
|
|
private_pkcs11_private_key_t *this;
|
|
char *module = NULL;
|
|
chunk_t keyid = chunk_empty, ckaid = chunk_empty;
|
|
int slot = -1;
|
|
CK_RV rv;
|
|
|
|
while (TRUE)
|
|
{
|
|
switch (va_arg(args, builder_part_t))
|
|
{
|
|
case BUILD_PKCS11_KEYID:
|
|
keyid = va_arg(args, chunk_t);
|
|
continue;
|
|
case BUILD_PKCS11_SLOT:
|
|
slot = va_arg(args, int);
|
|
continue;
|
|
case BUILD_PKCS11_MODULE:
|
|
module = va_arg(args, char*);
|
|
continue;
|
|
case BUILD_END:
|
|
break;
|
|
default:
|
|
return NULL;
|
|
}
|
|
break;
|
|
}
|
|
if (!keyid.len)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
INIT(this,
|
|
.public = {
|
|
.key = {
|
|
.get_type = _get_type,
|
|
.sign = _sign,
|
|
.decrypt = _decrypt,
|
|
.get_keysize = _get_keysize,
|
|
.get_public_key = _get_public_key,
|
|
.equals = private_key_equals,
|
|
.belongs_to = private_key_belongs_to,
|
|
.get_fingerprint = _get_fingerprint,
|
|
.has_fingerprint = private_key_has_fingerprint,
|
|
.get_encoding = _get_encoding,
|
|
.get_ref = _get_ref,
|
|
.destroy = _destroy,
|
|
},
|
|
},
|
|
.ref = 1,
|
|
);
|
|
|
|
if (module && slot != -1)
|
|
{
|
|
this->lib = find_lib(module);
|
|
if (!this->lib)
|
|
{
|
|
DBG1(DBG_CFG, "PKCS#11 module '%s' not found", module);
|
|
free(this);
|
|
return NULL;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
this->lib = find_lib_by_keyid(keyid, &slot, CKO_PUBLIC_KEY);
|
|
if (!this->lib)
|
|
{
|
|
this->lib = find_lib_by_keyid(keyid, &slot, CKO_CERTIFICATE);
|
|
}
|
|
if (!this->lib)
|
|
{
|
|
this->lib = find_lib_and_keyid_by_skid(keyid, &ckaid, &slot);
|
|
}
|
|
if (!this->lib)
|
|
{
|
|
DBG1(DBG_CFG, "no PKCS#11 module found having a keyid %#B", &keyid);
|
|
free(this);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
rv = this->lib->f->C_OpenSession(slot, CKF_SERIAL_SESSION,
|
|
NULL, NULL, &this->session);
|
|
if (rv != CKR_OK)
|
|
{
|
|
DBG1(DBG_CFG, "opening private key session on '%s':%d failed: %N",
|
|
module, slot, ck_rv_names, rv);
|
|
free(this);
|
|
return NULL;
|
|
}
|
|
|
|
this->slot = slot;
|
|
this->keyid = identification_create_from_encoding(ID_KEY_ID, keyid);
|
|
|
|
if (!login(this, slot))
|
|
{
|
|
destroy(this);
|
|
return NULL;
|
|
}
|
|
|
|
if (ckaid.ptr)
|
|
{
|
|
DBG1(DBG_CFG, "using CKA_ID '%#B' for key with keyid '%#B'",
|
|
&ckaid, &keyid);
|
|
keyid = ckaid;
|
|
}
|
|
|
|
if (!find_key(this, keyid))
|
|
{
|
|
DBG1(DBG_CFG, "did not find the key with %s '%#B'",
|
|
ckaid.ptr ? "CKA_ID" : "keyid", &keyid);
|
|
destroy(this);
|
|
return NULL;
|
|
}
|
|
|
|
this->pubkey = pkcs11_public_key_connect(this->lib, slot, this->type, keyid);
|
|
if (!this->pubkey)
|
|
{
|
|
this->pubkey = find_pubkey_in_certs(this, keyid);
|
|
if (!this->pubkey)
|
|
{
|
|
DBG1(DBG_CFG, "no public key or certificate found for private key "
|
|
"(%s '%#B') on '%s':%d", ckaid.ptr ? "CKA_ID" : "keyid",
|
|
&keyid, module, slot);
|
|
destroy(this);
|
|
return NULL;
|
|
}
|
|
}
|
|
return &this->public;
|
|
}
|