pgp encryption for android

//encrypted incoming data is of type Byte, instead of using the Decode method to convert raw data to binary, string-type data uses str.getbytes () toString str ="hello!";//here is the Encode method, which returns a byte type of encrypted data that can be converted to a string type using the new stringString strBase64 =NewString (Base64.encode (Str.getbytes (), Base64.default)); LOG.I ("Test","encode >>>"+strBase64); //here encodetostring will return the encrypted data of string type directlyStri

As shown below: Import Java.security.MessageDigest; Import java.security.NoSuchAlgorithmException; public class Md5 {public static String getMD5 (string val) throws nosuchalgorithmexception{ messagedigest MD5 = Me Ssagedigest.getinstance ("MD5"); Md5.update (Val.getbytes ()); byte[] m = md5.digest ()//Encrypted return getString (m); private static String getString (byte[] b) { StringBuffer buf = new StringBuffer (); for (int i = 0; i The above is s

the Dexcode, you can replace the instruction. The implementation is as follows:? 123456789101112131415161718192021222324252627 Constdexcode*code=dexfindclassmethod (gDexFile , "Lcom/android/dex/myclass;", "Setflaghidden");constdexcode*code2= dexfindclassmethod (gDexFile, "lcom/android/dex/myclass;", "Setflag"); NBSP;NBSP;NBSP;NBSP;//NBSP;REMAP!!!! if (Mprotect (base,module_size,prot_rea

a keyCipher.init (Cipher.decrypt_mode, SecureKey, SR); //now, get the data and decrypt//formally perform decryption operations returncipher.dofinal (SRC); } /*** BASE64 Code * *@paramInfo *@return */ Public StaticString Base64Encode (byte[] info) { returnbase64.encodebase64string (info); } /*** BASE64 Decoding * * *@paramInfo *@return */ Public Static byte[] Base64decode (String info) {returnbase64.decodebase64 (info); } /*** The message body is first d

(Password.getbytes ()); Secretkeyspec key1 = new Secretkeyspec (Password.getbytes (), "AES"); Cipher Cipher = cipher.getinstance (transformation); Cipher.init (Cipher.encrypt_mode, Key1, ZEROIV); byte[] EncryptedData = Cipher.dofinal (Content.getbytes ()); String encryptresultstr = Parsebyte2hexstr (EncryptedData); return ENCRYPTRESULTSTR;} catch (Exception e) {e.printstacktrace ();} return null;} /** * Decrypt * * @param content to decrypt * @param password decryption key * @retu

,"SHA1"); } Public byte[] eccryptSHA256 (String info) throws NoSuchAlgorithmException {returnEccrypt (Info,"SHA-256"); } Public byte[] eccryptSHA384 (String info) throws NoSuchAlgorithmException {returnEccrypt (Info,"SHA-384"); } Public byte[] eccryptSHA512 (String info) throws NoSuchAlgorithmException {returnEccrypt (Info,"SHA-512"); } Public Static voidMain (string[] args) throws NoSuchAlgorithmException {String msg=", Ii. Nine"; Encrypsha sha=NewEncrypsha (); String SHA1=sha.h

The free SQLite Open stream code only provides two functions, only implement these two functions to achieve the overall database encryption. And then he took a little effort to find a well-realized open Source Library from the Internet http://sourceforge.net/projects/wxcode/files/Components/wxSQLite3/Then write about how to integrate it into your so library.First download the source code, find Sqlite3/secure/src, all of the files (except Sqlite3.def)

There are a lot of materials on the Internet about MD5 encryption in Android, but the test is always different from the MD5 encryption in the website. Later I learned that the encoding method is incorrect, so I wrote one myself. Private Static final char hex_digits [] = {'0', '1', '2', '3', '4', '5', '6 ', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F '}; public sta

[] decrypted = cipher.dofinal (encrypted);return decrypted;}public static string Tohex (String txt) {Return Tohex (Txt.getbytes ());}public static string Fromhex (String hex) {return new String (ToByte (hex));}public static byte[] ToByte (String hexstring) {int len = Hexstring.length ()/2;Byte[] result = new Byte[len];for (int i = 0; i Result[i] = integer.valueof (hexstring.substring (2 * I, 2 * i + 2),). Bytevalue ();return result;}public static String Tohex (byte[] buf) {if (buf = = null)Retur

1 IntroductionData security is a very important aspect of network communication. In order to support Ssl/tls,java the JAVAX.NET.SSL package is provided with Class Sslcontext and Sslengine. In the Netty framework, I/O data is processed in Channelpipeline by the Channelhandler in the pipeline and forwarded to the next Channelhandler. Naturally, Netty also provides Channelhandler implementation Sslhandler to support SSL, and there is an internal sslengine to do the actual work.2 StepsFirst look at

example the following two functions:Sqlite_apiintSqlite3_key (Sqlite3 *db,/ * Database to be rekeyed * / Const void*pkey,/ * The key * / intNkey/ * The key length * /); Sqlite_apiintSQLITE3_KEY_V2 (Sqlite3 *db,/ * Database to be rekeyed * / Const Char*zdbname,/ * Name of the database * / Const void*pkey,/ * The key * / intNkey/ * The key length * /);You can encrypt the database.It is important to note that. It is only possible to invoke the arbitrary ability of the above two functions to e

]) 0X0FF) Buf.append (legalchars[(d >>) 63]);Buf.append (legalchars[(d >>) 63]);Buf.append ("= =");}return buf.tostring ();}private static int decode (char c) {if (c >= ' A ' C return ((int) c)-65;else if (c >= ' a ' c return ((int) c)-97 + 26;else if (c >= ' 0 ' C return ((int) c)-48 + 26 + 26;ElseSwitch (c) {Case ' + ':Return 62;Case '/':return 63;Case ' = ':return 0;Defaultthrow new RuntimeException ("Unexpected code:" + C);}}/*** Decodes the given BASE64 encoded String to a new byte ar