Android SharePreferences 进行数据进行加密
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package com.net.security.shareprefs.securitysp;
EncryptUtil
package com.net.security.shareprefs.securitysp;import android.annotation.SuppressLint;import android.content.Context;import android.os.Build;import android.provider.Settings;import android.text.TextUtils;import android.util.Base64;import android.util.Log;import com.net.security.shareprefs.BuildConfig;import java.security.MessageDigest;import java.security.NoSuchAlgorithmException;import javax.crypto.Cipher;import javax.crypto.spec.SecretKeySpec;/**AES加密解密工具*/public class EncryptUtil { BuildConfig s; private String key; private static EncryptUtil instance; private static final String TAG = EncryptUtil.class.getSimpleName(); private EncryptUtil(Context context){ String serialNo = getDeviceSerialNumber(context); //加密随机字符串生成AES key key = SHA(serialNo + "#$ERDTS$D%F^Gojikbh").substring(0, 16); Log.e(TAG,TAG+"___key = "+ key); } /** * 单例模式 * @param context context * @return */ public static EncryptUtil getInstance(Context context){ if (instance == null){ synchronized (EncryptUtil.class){ if (instance == null){ instance = new EncryptUtil(context); } } } return instance; } /** * Gets the hardware serial number of this device. * * @return serial number or Settings.Secure.ANDROID_ID if not available. */ @SuppressLint("HardwareIds") private String getDeviceSerialNumber(Context context) { // We're using the Reflection API because Build.SERIAL is only available // since API Level 9 (Gingerbread, Android 2.3). try { String deviceSerial = (String) Build.class.getField("SERIAL").get(null); if (TextUtils.isEmpty(deviceSerial)) { return Settings.Secure.getString(context.getContentResolver(), Settings.Secure.ANDROID_ID); } else { return deviceSerial; } } catch (Exception ignored) { // Fall back to Android_ID return Settings.Secure.getString(context.getContentResolver(), Settings.Secure.ANDROID_ID); } } /** * SHA加密 * @param strText 明文 * @return */ private String SHA( String strText){ // 返回值 String strResult = null; // 是否是有效字符串 if (strText != null && strText.length() > 0){ try{ // SHA 加密开始 MessageDigest messageDigest = MessageDigest.getInstance("SHA-256"); // 传入要加密的字符串 messageDigest.update(strText.getBytes()); byte byteBuffer[] = messageDigest.digest(); StringBuffer strHexString = new StringBuffer(); for (int i = 0; i < byteBuffer.length; i++){ String hex = Integer.toHexString(0xff & byteBuffer[i]); if (hex.length() == 1){ strHexString.append('0'); } strHexString.append(hex); } strResult = strHexString.toString(); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } } return strResult; } /** * AES128加密 * @param plainText 明文 * @return */ public String encrypt(String plainText) { try { Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding"); SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES"); cipher.init(Cipher.ENCRYPT_MODE, keyspec); byte[] encrypted = cipher.doFinal(plainText.getBytes()); return Base64.encodeToString(encrypted, Base64.NO_WRAP); } catch (Exception e) { e.printStackTrace(); return null; } } /** * AES128解密 * @param cipherText 密文 * @return */ public String decrypt(String cipherText) { try { byte[] encrypted1 = Base64.decode(cipherText, Base64.NO_WRAP); Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding"); SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES"); cipher.init(Cipher.DECRYPT_MODE, keyspec); byte[] original = cipher.doFinal(encrypted1); String originalString = new String(original); return originalString; } catch (Exception e) { e.printStackTrace(); return null; } }}SharedPreferences
package com.net.security.shareprefs.securitysp;import android.annotation.TargetApi;import android.content.Context;import android.os.Build;import android.preference.PreferenceManager;import android.text.TextUtils;import android.util.Log;import java.util.HashMap;import java.util.HashSet;import java.util.Map;import java.util.Set;/** * 自动加密SharedPreference */public class SharedPreferences implements android.content.SharedPreferences { private android.content.SharedPreferences mSharedPreferences; private static final String TAG = SharedPreferences.class.getName(); private Context mContext; public static SharedPreferences get(Context context, String name, int mode){ return new SharedPreferences( context, name, mode); } public static SharedPreferences get(Context context, String name){ return get(context,name,Context.MODE_PRIVATE); } public static SharedPreferences get(Context context){ return get(context,null,Context.MODE_PRIVATE); } /** * constructor * @param context should be ApplicationContext not activity * @param name file name * @param mode context mode */ public SharedPreferences(Context context, String name, int mode){ mContext = context; if (TextUtils.isEmpty(name)){ mSharedPreferences = PreferenceManager.getDefaultSharedPreferences(context); } else { mSharedPreferences = context.getSharedPreferences(name, mode); } } @Override public Map<String, String> getAll() { final Map<String, ?> encryptMap = mSharedPreferences.getAll(); final Map<String, String> decryptMap = new HashMap<>(); for (Map.Entry<String, ?> entry : encryptMap.entrySet()){ Object cipherText = entry.getValue(); if (cipherText != null){ decryptMap.put(entry.getKey(), entry.getValue().toString()); } } return decryptMap; } /** * encrypt function * @return cipherText base64 */ private String encryptPreference(String plainText){ return EncryptUtil.getInstance(mContext).encrypt(plainText); } /** * decrypt function * @return plainText */ private String decryptPreference(String cipherText){ return EncryptUtil.getInstance(mContext).decrypt(cipherText); } @Override public String getString(String key, String defValue) { final String encryptValue = mSharedPreferences.getString(encryptPreference(key), null); return encryptValue == null ? defValue : decryptPreference(encryptValue); } @Override public Set<String> getStringSet(String key, Set<String> defValues) { final Set<String> encryptSet = mSharedPreferences.getStringSet(encryptPreference(key), null); if (encryptSet == null){ return defValues; } final Set<String> decryptSet = new HashSet<>(); for (String encryptValue : encryptSet){ decryptSet.add(decryptPreference(encryptValue)); } return decryptSet; } @Override public int getInt(String key, int defValue) { final String encryptValue = mSharedPreferences.getString(encryptPreference(key), null); if (encryptValue == null) { return defValue; } return Integer.parseInt(decryptPreference(encryptValue)); } @Override public long getLong(String key, long defValue) { final String encryptValue = mSharedPreferences.getString(encryptPreference(key), null); if (encryptValue == null) { return defValue; } return Long.parseLong(decryptPreference(encryptValue)); } @Override public float getFloat(String key, float defValue) { final String encryptValue = mSharedPreferences.getString(encryptPreference(key), null); if (encryptValue == null) { return defValue; } return Float.parseFloat(decryptPreference(encryptValue)); } @Override public boolean getBoolean(String key, boolean defValue) { final String encryptValue = mSharedPreferences.getString(encryptPreference(key), null); if (encryptValue == null) { return defValue; } return Boolean.parseBoolean(decryptPreference(encryptValue)); } @Override public boolean contains(String key) { return mSharedPreferences.contains(encryptPreference(key)); } @Override public Editor edit() { return new Editor(); } @Override public void registerOnSharedPreferenceChangeListener(OnSharedPreferenceChangeListener listener) { mSharedPreferences.registerOnSharedPreferenceChangeListener(listener); } @Override public void unregisterOnSharedPreferenceChangeListener(OnSharedPreferenceChangeListener listener) { mSharedPreferences.unregisterOnSharedPreferenceChangeListener(listener); } /** * 处理加密过渡 */ public void handleTransition(){ Map<String, ?> oldMap = mSharedPreferences.getAll(); Map<String, String> newMap = new HashMap<>(); for (Map.Entry<String, ?> entry : oldMap.entrySet()){ Log.i(TAG, "key:"+entry.getKey()+", value:"+ entry.getValue()); newMap.put(encryptPreference(entry.getKey()), encryptPreference(entry.getValue().toString())); } android.content.SharedPreferences.Editor editor = mSharedPreferences.edit(); editor.clear().commit(); for (Map.Entry<String, String> entry : newMap.entrySet()){ editor.putString(entry.getKey(), entry.getValue()); } editor.commit(); } /** * 自动加密Editor */ public final class Editor implements android.content.SharedPreferences.Editor { private android.content.SharedPreferences.Editor mEditor; /** * constructor */ private Editor(){ mEditor = mSharedPreferences.edit(); } @Override public android.content.SharedPreferences.Editor putString(String key, String value) { mEditor.putString(encryptPreference(key), encryptPreference(value)); return this; } @Override public android.content.SharedPreferences.Editor putStringSet(String key, Set<String> values) { final Set<String> encryptSet = new HashSet<>(); for (String value : values){ encryptSet.add(encryptPreference(value)); } mEditor.putStringSet(encryptPreference(key), encryptSet); return this; } @Override public android.content.SharedPreferences.Editor putInt(String key, int value) { mEditor.putString(encryptPreference(key), encryptPreference(Integer.toString(value))); return this; } @Override public android.content.SharedPreferences.Editor putLong(String key, long value) { mEditor.putString(encryptPreference(key), encryptPreference(Long.toString(value))); return this; } @Override public android.content.SharedPreferences.Editor putFloat(String key, float value) { mEditor.putString(encryptPreference(key), encryptPreference(Float.toString(value))); return this; } @Override public android.content.SharedPreferences.Editor putBoolean(String key, boolean value) { mEditor.putString(encryptPreference(key), encryptPreference(Boolean.toString(value))); return this; } @Override public android.content.SharedPreferences.Editor remove(String key) { mEditor.remove(encryptPreference(key)); return this; } /** * Mark in the editor to remove all values from the preferences. * @return this */ @Override public android.content.SharedPreferences.Editor clear() { mEditor.clear(); return this; } /** * 提交数据到本地 * @return Boolean 判断是否提交成功 */ @Override public boolean commit() { return mEditor.commit(); } /** * Unlike commit(), which writes its preferences out to persistent storage synchronously, * apply() commits its changes to the in-memory SharedPreferences immediately but starts * an asynchronous commit to disk and you won't be notified of any failures. */ @Override @TargetApi(Build.VERSION_CODES.GINGERBREAD) public void apply() { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD) { mEditor.apply(); } else { commit(); } } }}SharedPrefsUtils
package com.net.security.shareprefs.securitysp;import android.content.Context;import java.util.Set;/** * 作者：dongixang * 时间：2017/10/31 10:59 * 功能：加密存贮功能; * 使用： */public class SharedPrefsUtils { private static SharedPrefsUtils instances; private SharedPreferences ssp; public static SharedPrefsUtils get(Context context, String spName, int mode){ instances=new SharedPrefsUtils(context, spName,mode); return instances; } public static SharedPrefsUtils get(Context context, String spName) { instances=get(context, spName,Context.MODE_PRIVATE); return instances; } public static SharedPrefsUtils get(Context context) { instances=get(context, null,Context.MODE_PRIVATE); return instances; } public SharedPrefsUtils(Context context, String spName, int mode) { this.ssp = SharedPreferences.get(context, spName,mode); }//========================= String public boolean putString(String key, String value) { if (value == null) { value = ""; } SharedPreferences.Editor editor = ssp.edit(); editor.putString(key, value); return editor.commit(); } public String getString(String key, String defaultValue) { return ssp.getString(key, defaultValue); }//========================= long public boolean putLong(String key, long value) { SharedPreferences.Editor editor = ssp.edit(); editor.putLong(key, value); return editor.commit(); } public long getLong(String key,long defaultvalue) { return ssp.getLong(key, defaultvalue); }//========================= int public boolean putInt(String key, int value) { SharedPreferences.Editor editor = ssp.edit(); editor.putInt(key, value); return editor.commit();} public long getInt(String key,int defaultvalue) { return ssp.getInt(key, defaultvalue); }//========================= boolean public boolean putBoolean(String key, boolean value) { SharedPreferences.Editor editor = ssp.edit(); editor.putBoolean(key, value); return editor.commit();} public boolean getBoolean(String key, boolean defaultvalue) { return ssp.getBoolean(key, defaultvalue); }//========================= Float public boolean putFloat(String key, float value) { SharedPreferences.Editor editor = ssp.edit(); editor.putFloat(key, value); return editor.commit();} public float getFloat(String key, float defaultvalue) { return ssp.getFloat(key, defaultvalue); }//========================= StringSet public boolean putStringSet(String key, Set<String> value) { SharedPreferences.Editor editor = ssp.edit(); editor.putStringSet(key, value); return editor.commit();} public Set<String> getStringSet(String key, Set<String> defaultvalue) { return ssp.getStringSet(key, defaultvalue); }} package com.net.security.shareprefs.normalsp;
SharePrefsUtils
package com.net.security.shareprefs.normalsp;import android.content.Context;import android.content.SharedPreferences;import android.preference.PreferenceManager;import android.text.TextUtils;import java.util.Set;/** * 作者：dongixang * 时间：2017/10/31 13:51 * 功能：不加密的Sharepreferences 进行数据保存 * 使用： */public class SharePrefsUtils { private static SharePrefsUtils instances; private SharedPreferences sp; public static SharePrefsUtils get(Context context, String spName, int mode){ instances=new SharePrefsUtils(context, spName,mode); return instances; } public static SharePrefsUtils get(Context context, String spName) { instances=get(context, spName,Context.MODE_PRIVATE); return instances; } public static SharePrefsUtils get(Context context) { instances=get(context, null,Context.MODE_PRIVATE); return instances; } public SharePrefsUtils(Context context, String spName, int mode) { if (TextUtils.isEmpty(spName)){ this.sp= PreferenceManager.getDefaultSharedPreferences(context); }else { this.sp=context.getSharedPreferences(spName,mode); } } //========================= String public boolean putString(String key, String value) { if (value == null) { value = ""; } SharedPreferences.Editor editor = sp.edit(); editor.putString(key, value); return editor.commit(); } public String getString(String key, String defaultValue) { return sp.getString(key, defaultValue); } //========================= long public boolean putLong(String key, long value) { SharedPreferences.Editor editor = sp.edit(); editor.putLong(key, value); return editor.commit(); } public long getLong(String key,long defaultvalue) { return sp.getLong(key, defaultvalue); } //========================= int public boolean putInt(String key, int value) { SharedPreferences.Editor editor = sp.edit(); editor.putInt(key, value); return editor.commit(); } public long getInt(String key,int defaultvalue) { return sp.getInt(key, defaultvalue); } //========================= boolean public boolean putBoolean(String key, boolean value) { SharedPreferences.Editor editor = sp.edit(); editor.putBoolean(key, value); return editor.commit(); } public boolean getBoolean(String key, boolean defaultvalue) { return sp.getBoolean(key, defaultvalue); } //========================= Float public boolean putFloat(String key, float value) { SharedPreferences.Editor editor = sp.edit(); editor.putFloat(key, value); return editor.commit(); } public float getFloat(String key, float defaultvalue) { return sp.getFloat(key, defaultvalue); } //========================= StringSet public boolean putStringSet(String key, Set<String> value) { SharedPreferences.Editor editor = sp.edit(); editor.putStringSet(key, value); return editor.commit(); } public Set<String> getStringSet(String key, Set<String> defaultvalue) { return sp.getStringSet(key, defaultvalue); }}下载 数据包下载
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