1 /*
2 * Copyright 2020, The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define LOG_TAG "android.hardware.security.keymint-impl"
18 #include <android-base/logging.h>
19
20 #include "AndroidKeyMintDevice.h"
21
22 #include <aidl/android/hardware/security/keymint/ErrorCode.h>
23
24 #include <keymaster/android_keymaster.h>
25 #include <keymaster/contexts/pure_soft_keymaster_context.h>
26 #include <keymaster/keymaster_configuration.h>
27
28 #include "AndroidKeyMintOperation.h"
29 #include "KeyMintUtils.h"
30
31 namespace aidl::android::hardware::security::keymint {
32
33 using namespace keymaster; // NOLINT(google-build-using-namespace)
34
35 using km_utils::authToken2AidlVec;
36 using km_utils::kmBlob2vector;
37 using km_utils::kmError2ScopedAStatus;
38 using km_utils::kmParam2Aidl;
39 using km_utils::KmParamSet;
40 using km_utils::kmParamSet2Aidl;
41 using km_utils::legacy_enum_conversion;
42 using secureclock::TimeStampToken;
43
44 namespace {
45
convertKeyCharacteristics(SecurityLevel keyMintSecurityLevel,const AuthorizationSet & requestParams,const AuthorizationSet & sw_enforced,const AuthorizationSet & hw_enforced,bool include_keystore_enforced=true)46 vector<KeyCharacteristics> convertKeyCharacteristics(SecurityLevel keyMintSecurityLevel,
47 const AuthorizationSet& requestParams,
48 const AuthorizationSet& sw_enforced,
49 const AuthorizationSet& hw_enforced,
50 bool include_keystore_enforced = true) {
51 KeyCharacteristics keyMintEnforced{keyMintSecurityLevel, {}};
52
53 if (keyMintSecurityLevel != SecurityLevel::SOFTWARE) {
54 // We're pretending to be TRUSTED_ENVIRONMENT or STRONGBOX.
55 keyMintEnforced.authorizations = kmParamSet2Aidl(hw_enforced);
56 if (include_keystore_enforced && !sw_enforced.empty()) {
57 // Put all the software authorizations in the keystore list.
58 KeyCharacteristics keystoreEnforced{SecurityLevel::KEYSTORE,
59 kmParamSet2Aidl(sw_enforced)};
60 return {std::move(keyMintEnforced), std::move(keystoreEnforced)};
61 } else {
62 return {std::move(keyMintEnforced)};
63 }
64 }
65
66 KeyCharacteristics keystoreEnforced{SecurityLevel::KEYSTORE, {}};
67 CHECK(hw_enforced.empty()) << "Hardware-enforced list is non-empty for pure SW KeyMint";
68
69 // This is a pure software implementation, so all tags are in sw_enforced.
70 // We need to walk through the SW-enforced list and figure out which tags to
71 // return in the software list and which in the keystore list.
72
73 for (auto& entry : sw_enforced) {
74 switch (entry.tag) {
75 /* Invalid and unused */
76 case KM_TAG_ECIES_SINGLE_HASH_MODE:
77 case KM_TAG_INVALID:
78 case KM_TAG_KDF:
79 case KM_TAG_ROLLBACK_RESISTANCE:
80 CHECK(false) << "We shouldn't see tag " << entry.tag;
81 break;
82
83 /* Unimplemented */
84 case KM_TAG_ALLOW_WHILE_ON_BODY:
85 case KM_TAG_BOOTLOADER_ONLY:
86 case KM_TAG_ROLLBACK_RESISTANT:
87 case KM_TAG_STORAGE_KEY:
88 break;
89
90 /* Keystore-enforced if not locally generated. */
91 case KM_TAG_CREATION_DATETIME:
92 // A KeyMaster implementation is required to add this tag to generated/imported keys.
93 // A KeyMint implementation is not required to create this tag, only to echo it back if
94 // it was included in the key generation/import request.
95 if (requestParams.Contains(KM_TAG_CREATION_DATETIME)) {
96 keystoreEnforced.authorizations.push_back(kmParam2Aidl(entry));
97 }
98 break;
99
100 /* Disallowed in KeyCharacteristics */
101 case KM_TAG_APPLICATION_DATA:
102 case KM_TAG_ATTESTATION_APPLICATION_ID:
103 break;
104
105 /* Not key characteristics */
106 case KM_TAG_ASSOCIATED_DATA:
107 case KM_TAG_ATTESTATION_CHALLENGE:
108 case KM_TAG_ATTESTATION_ID_BRAND:
109 case KM_TAG_ATTESTATION_ID_DEVICE:
110 case KM_TAG_ATTESTATION_ID_IMEI:
111 case KM_TAG_ATTESTATION_ID_MANUFACTURER:
112 case KM_TAG_ATTESTATION_ID_MEID:
113 case KM_TAG_ATTESTATION_ID_MODEL:
114 case KM_TAG_ATTESTATION_ID_PRODUCT:
115 case KM_TAG_ATTESTATION_ID_SERIAL:
116 case KM_TAG_AUTH_TOKEN:
117 case KM_TAG_CERTIFICATE_SERIAL:
118 case KM_TAG_CERTIFICATE_SUBJECT:
119 case KM_TAG_CERTIFICATE_NOT_AFTER:
120 case KM_TAG_CERTIFICATE_NOT_BEFORE:
121 case KM_TAG_CONFIRMATION_TOKEN:
122 case KM_TAG_DEVICE_UNIQUE_ATTESTATION:
123 case KM_TAG_IDENTITY_CREDENTIAL_KEY:
124 case KM_TAG_INCLUDE_UNIQUE_ID:
125 case KM_TAG_MAC_LENGTH:
126 case KM_TAG_NONCE:
127 case KM_TAG_RESET_SINCE_ID_ROTATION:
128 case KM_TAG_ROOT_OF_TRUST:
129 case KM_TAG_UNIQUE_ID:
130 break;
131
132 /* KeyMint-enforced */
133 case KM_TAG_ALGORITHM:
134 case KM_TAG_APPLICATION_ID:
135 case KM_TAG_AUTH_TIMEOUT:
136 case KM_TAG_BLOB_USAGE_REQUIREMENTS:
137 case KM_TAG_BLOCK_MODE:
138 case KM_TAG_BOOT_PATCHLEVEL:
139 case KM_TAG_CALLER_NONCE:
140 case KM_TAG_DIGEST:
141 case KM_TAG_EARLY_BOOT_ONLY:
142 case KM_TAG_EC_CURVE:
143 case KM_TAG_EXPORTABLE:
144 case KM_TAG_KEY_SIZE:
145 case KM_TAG_MAX_USES_PER_BOOT:
146 case KM_TAG_MIN_MAC_LENGTH:
147 case KM_TAG_MIN_SECONDS_BETWEEN_OPS:
148 case KM_TAG_NO_AUTH_REQUIRED:
149 case KM_TAG_ORIGIN:
150 case KM_TAG_OS_PATCHLEVEL:
151 case KM_TAG_OS_VERSION:
152 case KM_TAG_PADDING:
153 case KM_TAG_PURPOSE:
154 case KM_TAG_RSA_OAEP_MGF_DIGEST:
155 case KM_TAG_RSA_PUBLIC_EXPONENT:
156 case KM_TAG_TRUSTED_CONFIRMATION_REQUIRED:
157 case KM_TAG_TRUSTED_USER_PRESENCE_REQUIRED:
158 case KM_TAG_UNLOCKED_DEVICE_REQUIRED:
159 case KM_TAG_USER_AUTH_TYPE:
160 case KM_TAG_USER_SECURE_ID:
161 case KM_TAG_VENDOR_PATCHLEVEL:
162 keyMintEnforced.authorizations.push_back(kmParam2Aidl(entry));
163 break;
164
165 /* Keystore-enforced */
166 case KM_TAG_ACTIVE_DATETIME:
167 case KM_TAG_ALL_APPLICATIONS:
168 case KM_TAG_ALL_USERS:
169 case KM_TAG_MAX_BOOT_LEVEL:
170 case KM_TAG_ORIGINATION_EXPIRE_DATETIME:
171 case KM_TAG_USAGE_EXPIRE_DATETIME:
172 case KM_TAG_USER_ID:
173 case KM_TAG_USAGE_COUNT_LIMIT:
174 keystoreEnforced.authorizations.push_back(kmParam2Aidl(entry));
175 break;
176 }
177 }
178
179 vector<KeyCharacteristics> retval;
180 retval.reserve(2);
181 if (!keyMintEnforced.authorizations.empty()) retval.push_back(std::move(keyMintEnforced));
182 if (include_keystore_enforced && !keystoreEnforced.authorizations.empty()) {
183 retval.push_back(std::move(keystoreEnforced));
184 }
185
186 return retval;
187 }
188
convertCertificate(const keymaster_blob_t & cert)189 Certificate convertCertificate(const keymaster_blob_t& cert) {
190 return {std::vector<uint8_t>(cert.data, cert.data + cert.data_length)};
191 }
192
convertCertificateChain(const CertificateChain & chain)193 vector<Certificate> convertCertificateChain(const CertificateChain& chain) {
194 vector<Certificate> retval;
195 retval.reserve(chain.entry_count);
196 std::transform(chain.begin(), chain.end(), std::back_inserter(retval), convertCertificate);
197 return retval;
198 }
199
addClientAndAppData(const std::vector<uint8_t> & appId,const std::vector<uint8_t> & appData,::keymaster::AuthorizationSet * params)200 void addClientAndAppData(const std::vector<uint8_t>& appId, const std::vector<uint8_t>& appData,
201 ::keymaster::AuthorizationSet* params) {
202 params->Clear();
203 if (appId.size()) {
204 params->push_back(::keymaster::TAG_APPLICATION_ID, appId.data(), appId.size());
205 }
206 if (appData.size()) {
207 params->push_back(::keymaster::TAG_APPLICATION_DATA, appData.data(), appData.size());
208 }
209 }
210
211 } // namespace
212
213 constexpr size_t kOperationTableSize = 16;
214
AndroidKeyMintDevice(SecurityLevel securityLevel)215 AndroidKeyMintDevice::AndroidKeyMintDevice(SecurityLevel securityLevel)
216 : impl_(new (std::nothrow)::keymaster::AndroidKeymaster(
217 [&]() -> auto{
218 auto context = new (std::nothrow) PureSoftKeymasterContext(
219 KmVersion::KEYMINT_2, static_cast<keymaster_security_level_t>(securityLevel));
220 context->SetSystemVersion(::keymaster::GetOsVersion(),
221 ::keymaster::GetOsPatchlevel());
222 context->SetVendorPatchlevel(::keymaster::GetVendorPatchlevel());
223 // Software devices cannot be configured by the boot loader but they have
224 // to return a boot patch level. So lets just return the OS patch level.
225 // The OS patch level only has a year and a month so we just add the 1st
226 // of the month as day field.
227 context->SetBootPatchlevel(GetOsPatchlevel() * 100 + 1);
228 auto digest = ::keymaster::GetVbmetaDigest();
229 if (digest) {
230 std::string bootState = ::keymaster::GetVerifiedBootState();
231 std::string bootloaderState = ::keymaster::GetBootloaderState();
232 context->SetVerifiedBootInfo(bootState, bootloaderState, *digest);
233 } else {
234 LOG(ERROR) << "Unable to read vb_meta digest";
235 }
236 return context;
237 }(),
238 kOperationTableSize)),
239 securityLevel_(securityLevel) {}
240
~AndroidKeyMintDevice()241 AndroidKeyMintDevice::~AndroidKeyMintDevice() {}
242
getHardwareInfo(KeyMintHardwareInfo * info)243 ScopedAStatus AndroidKeyMintDevice::getHardwareInfo(KeyMintHardwareInfo* info) {
244 info->versionNumber = 2;
245 info->securityLevel = securityLevel_;
246 info->keyMintName = "FakeKeyMintDevice";
247 info->keyMintAuthorName = "Google";
248 info->timestampTokenRequired = false;
249 return ScopedAStatus::ok();
250 }
251
addRngEntropy(const vector<uint8_t> & data)252 ScopedAStatus AndroidKeyMintDevice::addRngEntropy(const vector<uint8_t>& data) {
253 if (data.size() == 0) {
254 return ScopedAStatus::ok();
255 }
256
257 AddEntropyRequest request(impl_->message_version());
258 request.random_data.Reinitialize(data.data(), data.size());
259
260 AddEntropyResponse response(impl_->message_version());
261 impl_->AddRngEntropy(request, &response);
262
263 return kmError2ScopedAStatus(response.error);
264 }
265
generateKey(const vector<KeyParameter> & keyParams,const optional<AttestationKey> & attestationKey,KeyCreationResult * creationResult)266 ScopedAStatus AndroidKeyMintDevice::generateKey(const vector<KeyParameter>& keyParams,
267 const optional<AttestationKey>& attestationKey,
268 KeyCreationResult* creationResult) {
269
270 GenerateKeyRequest request(impl_->message_version());
271 request.key_description.Reinitialize(KmParamSet(keyParams));
272 if (attestationKey) {
273 request.attestation_signing_key_blob =
274 KeymasterKeyBlob(attestationKey->keyBlob.data(), attestationKey->keyBlob.size());
275 request.attest_key_params.Reinitialize(KmParamSet(attestationKey->attestKeyParams));
276 request.issuer_subject = KeymasterBlob(attestationKey->issuerSubjectName.data(),
277 attestationKey->issuerSubjectName.size());
278 }
279
280 GenerateKeyResponse response(impl_->message_version());
281 impl_->GenerateKey(request, &response);
282
283 if (response.error != KM_ERROR_OK) {
284 // Note a key difference between this current aidl and previous hal, is
285 // that hal returns void where as aidl returns the error status. If
286 // aidl returns error, then aidl will not return any change you may make
287 // to the out parameters. This is quite different from hal where all
288 // output variable can be modified due to hal returning void.
289 //
290 // So the caller need to be aware not to expect aidl functions to clear
291 // the output variables for you in case of error. If you left some
292 // wrong data set in the out parameters, they will stay there.
293 return kmError2ScopedAStatus(response.error);
294 }
295
296 creationResult->keyBlob = kmBlob2vector(response.key_blob);
297 creationResult->keyCharacteristics = convertKeyCharacteristics(
298 securityLevel_, request.key_description, response.unenforced, response.enforced);
299 creationResult->certificateChain = convertCertificateChain(response.certificate_chain);
300 return ScopedAStatus::ok();
301 }
302
importKey(const vector<KeyParameter> & keyParams,KeyFormat keyFormat,const vector<uint8_t> & keyData,const optional<AttestationKey> & attestationKey,KeyCreationResult * creationResult)303 ScopedAStatus AndroidKeyMintDevice::importKey(const vector<KeyParameter>& keyParams,
304 KeyFormat keyFormat, const vector<uint8_t>& keyData,
305 const optional<AttestationKey>& attestationKey,
306 KeyCreationResult* creationResult) {
307
308 ImportKeyRequest request(impl_->message_version());
309 request.key_description.Reinitialize(KmParamSet(keyParams));
310 request.key_format = legacy_enum_conversion(keyFormat);
311 request.key_data = KeymasterKeyBlob(keyData.data(), keyData.size());
312 if (attestationKey) {
313 request.attestation_signing_key_blob =
314 KeymasterKeyBlob(attestationKey->keyBlob.data(), attestationKey->keyBlob.size());
315 request.attest_key_params.Reinitialize(KmParamSet(attestationKey->attestKeyParams));
316 request.issuer_subject = KeymasterBlob(attestationKey->issuerSubjectName.data(),
317 attestationKey->issuerSubjectName.size());
318 }
319
320 ImportKeyResponse response(impl_->message_version());
321 impl_->ImportKey(request, &response);
322
323 if (response.error != KM_ERROR_OK) {
324 return kmError2ScopedAStatus(response.error);
325 }
326
327 creationResult->keyBlob = kmBlob2vector(response.key_blob);
328 creationResult->keyCharacteristics = convertKeyCharacteristics(
329 securityLevel_, request.key_description, response.unenforced, response.enforced);
330 creationResult->certificateChain = convertCertificateChain(response.certificate_chain);
331
332 return ScopedAStatus::ok();
333 }
334
335 ScopedAStatus
importWrappedKey(const vector<uint8_t> & wrappedKeyData,const vector<uint8_t> & wrappingKeyBlob,const vector<uint8_t> & maskingKey,const vector<KeyParameter> & unwrappingParams,int64_t passwordSid,int64_t biometricSid,KeyCreationResult * creationResult)336 AndroidKeyMintDevice::importWrappedKey(const vector<uint8_t>& wrappedKeyData, //
337 const vector<uint8_t>& wrappingKeyBlob, //
338 const vector<uint8_t>& maskingKey, //
339 const vector<KeyParameter>& unwrappingParams, //
340 int64_t passwordSid, int64_t biometricSid, //
341 KeyCreationResult* creationResult) {
342
343 ImportWrappedKeyRequest request(impl_->message_version());
344 request.SetWrappedMaterial(wrappedKeyData.data(), wrappedKeyData.size());
345 request.SetWrappingMaterial(wrappingKeyBlob.data(), wrappingKeyBlob.size());
346 request.SetMaskingKeyMaterial(maskingKey.data(), maskingKey.size());
347 request.additional_params.Reinitialize(KmParamSet(unwrappingParams));
348 request.password_sid = static_cast<uint64_t>(passwordSid);
349 request.biometric_sid = static_cast<uint64_t>(biometricSid);
350
351 ImportWrappedKeyResponse response(impl_->message_version());
352 impl_->ImportWrappedKey(request, &response);
353
354 if (response.error != KM_ERROR_OK) {
355 return kmError2ScopedAStatus(response.error);
356 }
357
358 creationResult->keyBlob = kmBlob2vector(response.key_blob);
359 creationResult->keyCharacteristics = convertKeyCharacteristics(
360 securityLevel_, request.additional_params, response.unenforced, response.enforced);
361 creationResult->certificateChain = convertCertificateChain(response.certificate_chain);
362
363 return ScopedAStatus::ok();
364 }
365
upgradeKey(const vector<uint8_t> & keyBlobToUpgrade,const vector<KeyParameter> & upgradeParams,vector<uint8_t> * keyBlob)366 ScopedAStatus AndroidKeyMintDevice::upgradeKey(const vector<uint8_t>& keyBlobToUpgrade,
367 const vector<KeyParameter>& upgradeParams,
368 vector<uint8_t>* keyBlob) {
369
370 UpgradeKeyRequest request(impl_->message_version());
371 request.SetKeyMaterial(keyBlobToUpgrade.data(), keyBlobToUpgrade.size());
372 request.upgrade_params.Reinitialize(KmParamSet(upgradeParams));
373
374 UpgradeKeyResponse response(impl_->message_version());
375 impl_->UpgradeKey(request, &response);
376
377 if (response.error != KM_ERROR_OK) {
378 return kmError2ScopedAStatus(response.error);
379 }
380
381 *keyBlob = kmBlob2vector(response.upgraded_key);
382 return ScopedAStatus::ok();
383 }
384
deleteKey(const vector<uint8_t> & keyBlob)385 ScopedAStatus AndroidKeyMintDevice::deleteKey(const vector<uint8_t>& keyBlob) {
386 DeleteKeyRequest request(impl_->message_version());
387 request.SetKeyMaterial(keyBlob.data(), keyBlob.size());
388
389 DeleteKeyResponse response(impl_->message_version());
390 impl_->DeleteKey(request, &response);
391
392 return kmError2ScopedAStatus(response.error);
393 }
394
deleteAllKeys()395 ScopedAStatus AndroidKeyMintDevice::deleteAllKeys() {
396 // There's nothing to be done to delete software key blobs.
397 DeleteAllKeysRequest request(impl_->message_version());
398 DeleteAllKeysResponse response(impl_->message_version());
399 impl_->DeleteAllKeys(request, &response);
400
401 return kmError2ScopedAStatus(response.error);
402 }
403
destroyAttestationIds()404 ScopedAStatus AndroidKeyMintDevice::destroyAttestationIds() {
405 return kmError2ScopedAStatus(KM_ERROR_UNIMPLEMENTED);
406 }
407
begin(KeyPurpose purpose,const vector<uint8_t> & keyBlob,const vector<KeyParameter> & params,const optional<HardwareAuthToken> & authToken,BeginResult * result)408 ScopedAStatus AndroidKeyMintDevice::begin(KeyPurpose purpose, const vector<uint8_t>& keyBlob,
409 const vector<KeyParameter>& params,
410 const optional<HardwareAuthToken>& authToken,
411 BeginResult* result) {
412
413 BeginOperationRequest request(impl_->message_version());
414 request.purpose = legacy_enum_conversion(purpose);
415 request.SetKeyMaterial(keyBlob.data(), keyBlob.size());
416 request.additional_params.Reinitialize(KmParamSet(params));
417
418 vector<uint8_t> vector_token = authToken2AidlVec(authToken);
419 request.additional_params.push_back(
420 TAG_AUTH_TOKEN, reinterpret_cast<uint8_t*>(vector_token.data()), vector_token.size());
421
422 BeginOperationResponse response(impl_->message_version());
423 impl_->BeginOperation(request, &response);
424
425 if (response.error != KM_ERROR_OK) {
426 return kmError2ScopedAStatus(response.error);
427 }
428
429 result->params = kmParamSet2Aidl(response.output_params);
430 result->challenge = response.op_handle;
431 result->operation =
432 ndk::SharedRefBase::make<AndroidKeyMintOperation>(impl_, response.op_handle);
433 return ScopedAStatus::ok();
434 }
435
deviceLocked(bool passwordOnly,const std::optional<secureclock::TimeStampToken> & timestampToken)436 ScopedAStatus AndroidKeyMintDevice::deviceLocked(
437 bool passwordOnly, const std::optional<secureclock::TimeStampToken>& timestampToken) {
438 DeviceLockedRequest request(impl_->message_version());
439 request.passwordOnly = passwordOnly;
440 if (timestampToken.has_value()) {
441 request.token.challenge = timestampToken->challenge;
442 request.token.mac = {timestampToken->mac.data(), timestampToken->mac.size()};
443 request.token.timestamp = timestampToken->timestamp.milliSeconds;
444 }
445 DeviceLockedResponse response = impl_->DeviceLocked(request);
446 return kmError2ScopedAStatus(response.error);
447 }
448
earlyBootEnded()449 ScopedAStatus AndroidKeyMintDevice::earlyBootEnded() {
450 EarlyBootEndedResponse response = impl_->EarlyBootEnded();
451 return kmError2ScopedAStatus(response.error);
452 }
453
454 ScopedAStatus
convertStorageKeyToEphemeral(const std::vector<uint8_t> &,std::vector<uint8_t> *)455 AndroidKeyMintDevice::convertStorageKeyToEphemeral(const std::vector<uint8_t>& /* storageKeyBlob */,
456 std::vector<uint8_t>* /* ephemeralKeyBlob */) {
457 return kmError2ScopedAStatus(KM_ERROR_UNIMPLEMENTED);
458 }
459
getKeyCharacteristics(const std::vector<uint8_t> & keyBlob,const std::vector<uint8_t> & appId,const std::vector<uint8_t> & appData,std::vector<KeyCharacteristics> * keyCharacteristics)460 ScopedAStatus AndroidKeyMintDevice::getKeyCharacteristics(
461 const std::vector<uint8_t>& keyBlob, const std::vector<uint8_t>& appId,
462 const std::vector<uint8_t>& appData, std::vector<KeyCharacteristics>* keyCharacteristics) {
463 GetKeyCharacteristicsRequest request(impl_->message_version());
464 request.SetKeyMaterial(keyBlob.data(), keyBlob.size());
465 addClientAndAppData(appId, appData, &request.additional_params);
466
467 GetKeyCharacteristicsResponse response(impl_->message_version());
468 impl_->GetKeyCharacteristics(request, &response);
469
470 if (response.error != KM_ERROR_OK) {
471 return kmError2ScopedAStatus(response.error);
472 }
473
474 AuthorizationSet emptySet;
475 *keyCharacteristics =
476 convertKeyCharacteristics(securityLevel_, emptySet, response.unenforced, response.enforced,
477 /* include_keystore_enforced = */ false);
478
479 return ScopedAStatus::ok();
480 }
481
getRootOfTrustChallenge(array<uint8_t,16> *)482 ScopedAStatus AndroidKeyMintDevice::getRootOfTrustChallenge(array<uint8_t, 16>* /* challenge */) {
483 return kmError2ScopedAStatus(KM_ERROR_UNIMPLEMENTED);
484 }
485
getRootOfTrust(const array<uint8_t,16> &,vector<uint8_t> *)486 ScopedAStatus AndroidKeyMintDevice::getRootOfTrust(const array<uint8_t, 16>& /* challenge */,
487 vector<uint8_t>* /* rootOfTrust */) {
488 return kmError2ScopedAStatus(KM_ERROR_UNIMPLEMENTED);
489 }
490
sendRootOfTrust(const vector<uint8_t> &)491 ScopedAStatus AndroidKeyMintDevice::sendRootOfTrust(const vector<uint8_t>& /* rootOfTrust */) {
492 return kmError2ScopedAStatus(KM_ERROR_UNIMPLEMENTED);
493 }
494
CreateKeyMintDevice(SecurityLevel securityLevel)495 std::shared_ptr<IKeyMintDevice> CreateKeyMintDevice(SecurityLevel securityLevel) {
496 return ndk::SharedRefBase::make<AndroidKeyMintDevice>(securityLevel);
497 }
498
499 } // namespace aidl::android::hardware::security::keymint
500