110 lines
4.2 KiB
C++
110 lines
4.2 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "SoftGateKeeper.h"
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#include "SoftGateKeeperDevice.h"
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namespace android {
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int SoftGateKeeperDevice::enroll(uint32_t uid,
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const uint8_t *current_password_handle, uint32_t current_password_handle_length,
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const uint8_t *current_password, uint32_t current_password_length,
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const uint8_t *desired_password, uint32_t desired_password_length,
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uint8_t **enrolled_password_handle, uint32_t *enrolled_password_handle_length) {
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if (enrolled_password_handle == NULL || enrolled_password_handle_length == NULL ||
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desired_password == NULL || desired_password_length == 0)
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return -EINVAL;
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// Current password and current password handle go together
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if (current_password_handle == NULL || current_password_handle_length == 0 ||
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current_password == NULL || current_password_length == 0) {
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current_password_handle = NULL;
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current_password_handle_length = 0;
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current_password = NULL;
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current_password_length = 0;
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}
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SizedBuffer desired_password_buffer(desired_password_length);
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memcpy(desired_password_buffer.buffer.get(), desired_password, desired_password_length);
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SizedBuffer current_password_handle_buffer(current_password_handle_length);
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if (current_password_handle) {
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memcpy(current_password_handle_buffer.buffer.get(), current_password_handle,
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current_password_handle_length);
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}
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SizedBuffer current_password_buffer(current_password_length);
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if (current_password) {
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memcpy(current_password_buffer.buffer.get(), current_password, current_password_length);
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}
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EnrollRequest request(uid, ¤t_password_handle_buffer, &desired_password_buffer,
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¤t_password_buffer);
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EnrollResponse response;
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impl_->Enroll(request, &response);
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if (response.error == ERROR_RETRY) {
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return response.retry_timeout;
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} else if (response.error != ERROR_NONE) {
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return -EINVAL;
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}
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*enrolled_password_handle = response.enrolled_password_handle.buffer.release();
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*enrolled_password_handle_length = response.enrolled_password_handle.length;
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return 0;
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}
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int SoftGateKeeperDevice::verify(uint32_t uid,
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uint64_t challenge, const uint8_t *enrolled_password_handle,
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uint32_t enrolled_password_handle_length, const uint8_t *provided_password,
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uint32_t provided_password_length, uint8_t **auth_token, uint32_t *auth_token_length,
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bool *request_reenroll) {
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if (enrolled_password_handle == NULL ||
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provided_password == NULL) {
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return -EINVAL;
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}
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SizedBuffer password_handle_buffer(enrolled_password_handle_length);
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memcpy(password_handle_buffer.buffer.get(), enrolled_password_handle,
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enrolled_password_handle_length);
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SizedBuffer provided_password_buffer(provided_password_length);
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memcpy(provided_password_buffer.buffer.get(), provided_password, provided_password_length);
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VerifyRequest request(uid, challenge, &password_handle_buffer, &provided_password_buffer);
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VerifyResponse response;
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impl_->Verify(request, &response);
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if (response.error == ERROR_RETRY) {
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return response.retry_timeout;
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} else if (response.error != ERROR_NONE) {
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return -EINVAL;
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}
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if (auth_token != NULL && auth_token_length != NULL) {
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*auth_token = response.auth_token.buffer.release();
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*auth_token_length = response.auth_token.length;
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}
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if (request_reenroll != NULL) {
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*request_reenroll = response.request_reenroll;
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}
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return 0;
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}
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} // namespace android
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