| /* Copyright 2017 The Android Open Source Project |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ |
| |
| #include "keystore_backend_binder.h" |
| |
| #include <binder/IServiceManager.h> |
| #include <keystore/keystore.h> |
| #include <keystore/IKeystoreService.h> |
| #include <keystore/keystore_hidl_support.h> |
| |
| using namespace android; |
| using keystore::blob2hidlVec; |
| using keystore::hidl_vec; |
| |
| namespace { |
| const char keystore_service_name[] = "android.security.keystore"; |
| }; |
| |
| int32_t KeystoreBackendBinder::sign( |
| const char *key_id, const uint8_t* in, size_t len, uint8_t** reply, |
| size_t* reply_len) { |
| sp<IServiceManager> sm = defaultServiceManager(); |
| sp<IBinder> binder = sm->getService(String16(keystore_service_name)); |
| sp<IKeystoreService> service = interface_cast<IKeystoreService>(binder); |
| |
| if (service == NULL) { |
| ALOGE("could not contact keystore"); |
| return -1; |
| } |
| |
| auto inBlob = blob2hidlVec(in ,len); |
| hidl_vec<uint8_t> reply_vec; |
| auto ret = service->sign(String16(key_id), inBlob, &reply_vec); |
| if (!ret.isOk()) { |
| return -1; |
| } |
| |
| *reply = reply_vec.data(); |
| *reply_len = reply_vec.size(); |
| return 0; |
| } |
| |
| int32_t KeystoreBackendBinder::get_pubkey( |
| const char *key_id, uint8_t** pubkey, size_t* pubkey_len) { |
| sp<IServiceManager> sm = defaultServiceManager(); |
| sp<IBinder> binder = sm->getService(String16(keystore_service_name)); |
| sp<IKeystoreService> service = interface_cast<IKeystoreService>(binder); |
| |
| if (service == NULL) { |
| ALOGE("could not contact keystore"); |
| return -1; |
| } |
| |
| hidl_vec<uint8_t> pubkey_vec; |
| auto ret = service->get_pubkey(String16(key_id), &pubkey_vec); |
| if (!ret.isOk()) { |
| return -1; |
| } |
| |
| *pubkey = pubkey_vec.data(); |
| *pubkey_len = pubkey_vec.size(); |
| return 0; |
| } |