pgp encryption for android

In an article from xda developer, the author describes in detail how to use GDB + IDA to find the encryption key of Lua files in Angry Birds Rio Android. Although there is no reverse engineering, but maybe it will be used one day, first record it. Well... I have attached a debugger to native code, set breakpoints, analyzed registers, memory, etc. it wasn' t that easy though. it took me several days to star

Android Base64 encryption and decryption, androidbase64 // The encrypted incoming data is of the byte type. Instead of converting the original data to binary data using the decode method, you can use str. getBytes () to String str = "Hello! "; // Here the encode method is used. The returned data is byte-type encrypted data. You can convert it to String-type String strBase64 = new String (Base64.encode (str.

please look for this genuine code, after-sales technology is guaranteed, the code has been continuously updated. (piracy is shameful, offenders must investigate) This is the company's team development --------------------------------------------------------------------------------------------------------------- ----------1. There are 4 sets of Oracle, MSYQL, spring3.0, spring4.0 all available without hitting the jar without encrypting the source code ( the bottom 2.1) 2. Support App mobile app

Yesterday the boss asked me to look at the Android encryption algorithm. So I looked for it online and found the AES encryption algorithm. (Of course, there are md5,base64 what http://snowolf.iteye.com/blog/379860 this article lists a lot, but basically is J2SE platform, Android platform does not necessarily support, B

　　Recently, the Android interface written by the company needs to be encrypted to prevent malicious attacks.1 Most of the interface encryption is carry certificate, we can refer to this big Brother's http://my.oschina.net/jjface/blog/3391442 This kind of carrying certificate is troublesome, and the code is more cumbersome, the general students are confused, so I think of a simple way, pass two parameters, o

Since the original mcrypt_decrypt has been discarded, and now the encryption of the docking with Android to Openssl_encrypt PHP encryption key is 32 bits, IV is a 16-digit pure number, the filling mode is 0, the encryption algorithm is as follows $res = Openssl_encrypt ($data, ' AES-256-CBC ', Self:: $key, 0, Self::

Android AES encryption tool and androidaes Tool 1. AES encryption tool Java does not support PKCS7Padding. Only PKCS5Padding is supported. We know that the encryption algorithm consists of algorithm + mode + fill. This article uses the PKCS5Padding encryption method. '' Pa

Bouncycastleprovider ());PublicKey = Keyfactory.generatepublic (KeySpec);} catch (Exception E1) {E1.printstacktrace ();}return publickey;}private static final byte[] Tobytes (String s) {byte[] bytes;bytes = new Byte[s.length ()/2];for (int i = 0; i Bytes[i] = (byte) integer.parseint (s.substring (2 * I, 2 * i + 2), 16);}return bytes;}public static String tohexstring (byte[] b) {StringBuilder sb = new StringBuilder (B.length * 2);for (int i = 0; i Sb.append (hexchar[(B[i] 0xf0) >>> 4]);Sb.appen

) is determined when the Set Password and confirm setting password are equal. The value in the method is changed to the values that are processed by the new method (Md5encryption) in the new Class (Md5utils), with the following code:1 editor.putstring ("Password", md5utils.md5encryption (password));View Code①. In the Enter Password dialog (Showinputpwddialog), when you determine that the input password and the saved password are equal, you need to first process the entered password through the n

content and ID Bundle Bundle = this.getintent (). Getextras (); String BODY = bundle.getstring ("Body"); String time = bundle.getstring (' time '); String address = bundle.getstring ("Address"); Address_show.settext (address); Early_body_show.settext (body); Time_show.settext (time); After the text message is decrypted and displayed in the TextView//If the char+8 is out of range, the String real_content = "" is parsed directly according to the original character. for (int i =

); } /*** byte array encryption*/ Private Final Static byte[] Encrypt (byte[] source, String algorithm)throwsnosuchalgorithmexception {messagedigest MD=messagedigest.getinstance (algorithm); Md.reset (); Md.update (source); returnmd.digest (); } /*** Get hex string from byte array*/ Private Final StaticString tohexstring (byte[] res) {StringBuffer SB=NewStringBuffer (res.length ); for(inti = 0; i ) {String digit= Integer.toh

This section learns to use the C language to encrypt strings, and everyone knows that encryption using Java implementations can be deserialized, whereas encryption using C writes is very difficult to decompile. So we use JNI to learn how to use C to implement the encryption of strings.First: We implement an interfaceThe layout file is subsidized.Second: Add a loc

Google has recently accelerated the browsing of Android platform security pages by controlling browsers and the sites it accesses--Elie Bursztein, head of Google's Anti-Abuse research team, said in a Thursday blog post that Google has launched a faster new encryption algorithm These two cryptographic algorithms, named ChaCha20 and Poly1305, are added to the Chrome browser. "ChaCha20 and Poly1305 will app

specifies how to compile it.Local_path: = $ (call My-dir) include $ (clear_vars) local_module: = Share local_src_files: = share.c Include $ (build_shared_library)Then create a new Application.mk file, specifying the build platform and other dependencies.App_abi: =armeabi-v7aapp_platform:=android-8app_stl:=gnustl_staticapp_cflags + =-wno-error=format-securityThen execute the command in the JNI folder:Ndk-buildThe so file is compiled and stored in

Data encryption transfer between Android and PHP [code] [Java] Code1 MCrypt =NewMCrypt ();2/*Encrypt*/3 String encrypted = Mcrypt.bytestohex (Mcrypt.encrypt ("Text to Encrypt") );4/*Decrypt*/5 String decrypted =NewString (Mcrypt.decrypt (encrypted)); Code [PHP] Code1 $mcrypt =NewMCrypt ();2#Encrypt3 $encrypted = $mcrypt->encrypt ("Text to Encrypt");4#Decrypt5 $decrypted = $mcryptdecrypt ($encrypted); Code M

#region cross-platform plus decryption (C # Android IOS) //public static string SKey = "12345 678 "; ///// des Cross (C # Android IOS) Three platforms common encryption and decryption method

(Textutils.isempty (PlaceholderFragment.text01.getText)) { toast.maketext (context, "Please enter content that needs to be encrypted", toast.length_short) .show (); }else{ Stringtext= PlaceholderFragment.text01.getText (). toString () Nbsp;.trim (); toast.maketext (context, "Start Encryption", Toast.LENGTH_ Short). Show (); Stringtext01=newstring (Hex.encodehex (digestutils.md5 (text))); placeholderfragment.text02.settext ( TEXT01); PlaceholderFra

[] Encrypt (byte[] raw, byte[] clear) throws Exception {Secretkeyspec Skeyspec = new Secretkeyspec (Raw, "AES"); Cipher Cipher = cipher.getinstance ("AES"); Cipher.init (Cipher.encrypt_mode, Skeyspec, New Ivparameterspec (New byte[ Cipher.getblocksize ()]); byte[] encrypted = cipher.dofinal (clear); return encrypted;} private static byte[] Decrypt (byte[] raw, byte[] encrypted) throws Exception {Secretkeyspec Skeyspec = new Secretkeyspec (RA W, "AES"); Cipher Cipher = cipher.getinstance ("AES");

Android AES encryption tool (tested and compatible with all versions, reliable) import android.annotation.SuppressLint;import java.security.SecureRandom;import javax.crypto.Cipher;import javax.crypto.KeyGenerator;import javax.crypto.SecretKey;import javax.crypto.spec.IvParameterSpec;import javax.crypto.spec.SecretKeySpec;/** * * * Author：sunger */public class AESUtils {public static String encrypt(String

Android MD5 Encryption AlgorithmPublic class MD5test {/*** @ Param args* @ Throws NoSuchAlgorithmException*/Public static void main (String [] args) throws NoSuchAlgorithmException {String pwd = "123456 ";MessageDigest digest = MessageDigest. getInstance ("MD5 ");Byte [] result = digest. digest (pwd. getBytes ());StringBuilder sb = new StringBuilder ();For (byte B: result ){Int number = B 0xff;String hex =