1 /* Copyright 2017 The Android Open Source Project 2 * 3 * Redistribution and use in source and binary forms, with or without 4 * modification, are permitted provided that the following conditions 5 * are met: 6 * 1. Redistributions of source code must retain the above copyright 7 * notice, this list of conditions and the following disclaimer. 8 * 2. Redistributions in binary form must reproduce the above copyright 9 * notice, this list of conditions and the following disclaimer in the 10 * documentation and/or other materials provided with the distribution. 11 * 12 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY 13 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 14 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 15 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY 16 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 17 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 18 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 19 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 20 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 21 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ 22 23 #include "keystore_backend_hidl.h" 24 25 #include <android/system/wifi/keystore/1.0/IKeystore.h> 26 #include <log/log.h> 27 28 using android::hardware::hidl_vec; 29 using android::hardware::Return; 30 using android::sp; 31 using android::system::wifi::keystore::V1_0::IKeystore; 32 33 int32_t KeystoreBackendHidl::sign( 34 const char *key_id, const uint8_t* in, size_t len, uint8_t** reply, 35 size_t* reply_len) { 36 if (key_id == NULL || in == NULL || reply == NULL || reply_len == NULL) { 37 ALOGE("Null pointer argument passed"); 38 return -1; 39 } 40 41 sp<IKeystore> service = IKeystore::tryGetService(); 42 if (service == NULL) { 43 ALOGE("could not contact keystore HAL"); 44 return -1; 45 } 46 47 bool success = false; 48 auto cb = [&](IKeystore::KeystoreStatusCode status, 49 hidl_vec<uint8_t> signedData) { 50 if (status == IKeystore::KeystoreStatusCode::SUCCESS) { 51 *reply_len = signedData.size(); 52 *reply = signedData.releaseData(); 53 success = true; 54 } 55 }; 56 Return<void> ret = service->sign( 57 key_id, std::vector<uint8_t>(in, in + len), cb); 58 if (!ret.isOk() || !success) { 59 return 1; 60 } 61 return 0; 62 } 63 64 int32_t KeystoreBackendHidl::get_pubkey( 65 const char *key_id, uint8_t** pubkey, size_t* pubkey_len) { 66 if (key_id == NULL || pubkey == NULL || pubkey_len == NULL) { 67 ALOGE("Null pointer argument passed"); 68 return -1; 69 } 70 71 sp<IKeystore> service = IKeystore::tryGetService(); 72 if (service == NULL) { 73 ALOGE("could not contact keystore HAL"); 74 return -1; 75 } 76 77 bool success = false; 78 auto cb = [&](IKeystore::KeystoreStatusCode status, 79 hidl_vec<uint8_t> publicKey) { 80 if (status == IKeystore::KeystoreStatusCode::SUCCESS) { 81 *pubkey_len = publicKey.size(); 82 *pubkey = publicKey.releaseData(); 83 success = true; 84 } 85 }; 86 Return<void> ret = service->getPublicKey(key_id, cb); 87 if (!ret.isOk() || !success) { 88 return 1; 89 } 90 return 0; 91 } 92
