blob: 248dedb7832bde11351f32afefc6060f794efb62 [file] [log] [blame]
/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "SyntheticPasswordManager"
#include "JNIHelp.h"
#include "jni.h"
#include <android_runtime/Log.h>
#include <utils/Timers.h>
#include <utils/misc.h>
#include <utils/String8.h>
#include <utils/Log.h>
#include <gatekeeper/password_handle.h>
extern "C" {
#include "crypto_scrypt.h"
}
namespace android {
static jlong android_server_SyntheticPasswordManager_nativeSidFromPasswordHandle(JNIEnv* env, jobject, jbyteArray handleArray) {
jbyte* data = (jbyte*)env->GetPrimitiveArrayCritical(handleArray, NULL);
if (data != NULL) {
const gatekeeper::password_handle_t *handle =
reinterpret_cast<const gatekeeper::password_handle_t *>(data);
jlong sid = handle->user_id;
env->ReleasePrimitiveArrayCritical(handleArray, data, JNI_ABORT);
return sid;
} else {
return 0;
}
}
static jbyteArray android_server_SyntheticPasswordManager_nativeScrypt(JNIEnv* env, jobject, jbyteArray password, jbyteArray salt, jint N, jint r, jint p, jint outLen) {
if (!password || !salt) {
return NULL;
}
int passwordLen = env->GetArrayLength(password);
int saltLen = env->GetArrayLength(salt);
jbyteArray ret = env->NewByteArray(outLen);
jbyte* passwordPtr = (jbyte*)env->GetByteArrayElements(password, NULL);
jbyte* saltPtr = (jbyte*)env->GetByteArrayElements(salt, NULL);
jbyte* retPtr = (jbyte*)env->GetByteArrayElements(ret, NULL);
int rc = crypto_scrypt((const uint8_t *)passwordPtr, passwordLen,
(const uint8_t *)saltPtr, saltLen, N, r, p, (uint8_t *)retPtr,
outLen);
env->ReleaseByteArrayElements(password, passwordPtr, JNI_ABORT);
env->ReleaseByteArrayElements(salt, saltPtr, JNI_ABORT);
env->ReleaseByteArrayElements(ret, retPtr, 0);
if (!rc) {
return ret;
} else {
SLOGE("scrypt failed");
return NULL;
}
}
static const JNINativeMethod sMethods[] = {
/* name, signature, funcPtr */
{"nativeSidFromPasswordHandle", "([B)J", (void*)android_server_SyntheticPasswordManager_nativeSidFromPasswordHandle},
{"nativeScrypt", "([B[BIIII)[B", (void*)android_server_SyntheticPasswordManager_nativeScrypt},
};
int register_android_server_SyntheticPasswordManager(JNIEnv* env) {
return jniRegisterNativeMethods(env, "com/android/server/locksettings/SyntheticPasswordManager",
sMethods, NELEM(sMethods));
}
} /* namespace android */