1/* 2 * Copyright (C) 2018 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 "Scrypt" 18 19#include <nativehelper/JNIHelp.h> 20#include "jni.h" 21 22#include <android_runtime/Log.h> 23#include <utils/Timers.h> 24#include <utils/misc.h> 25#include <utils/String8.h> 26#include <utils/Log.h> 27 28extern "C" { 29#include "crypto_scrypt.h" 30} 31 32namespace android { 33 34static jbyteArray android_security_Scrypt_nativeScrypt(JNIEnv* env, jobject, jbyteArray password, jbyteArray salt, jint N, jint r, jint p, jint outLen) { 35 if (!password || !salt) { 36 return NULL; 37 } 38 39 int passwordLen = env->GetArrayLength(password); 40 int saltLen = env->GetArrayLength(salt); 41 jbyteArray ret = env->NewByteArray(outLen); 42 43 jbyte* passwordPtr = (jbyte*)env->GetByteArrayElements(password, NULL); 44 jbyte* saltPtr = (jbyte*)env->GetByteArrayElements(salt, NULL); 45 jbyte* retPtr = (jbyte*)env->GetByteArrayElements(ret, NULL); 46 47 int rc = crypto_scrypt((const uint8_t *)passwordPtr, passwordLen, 48 (const uint8_t *)saltPtr, saltLen, N, r, p, (uint8_t *)retPtr, 49 outLen); 50 env->ReleaseByteArrayElements(password, passwordPtr, JNI_ABORT); 51 env->ReleaseByteArrayElements(salt, saltPtr, JNI_ABORT); 52 env->ReleaseByteArrayElements(ret, retPtr, 0); 53 54 if (!rc) { 55 return ret; 56 } else { 57 SLOGE("scrypt failed"); 58 return NULL; 59 } 60} 61 62static const JNINativeMethod sMethods[] = { 63 /* name, signature, funcPtr */ 64 {"nativeScrypt", "([B[BIIII)[B", (void*)android_security_Scrypt_nativeScrypt}, 65}; 66 67int register_android_security_Scrypt(JNIEnv* env) { 68 return jniRegisterNativeMethods(env, "android/security/Scrypt", 69 sMethods, NELEM(sMethods)); 70} 71 72} /* namespace android */ 73