free security for android phone

=NewBigInteger (1/*Positive*/, pubkey.getencoded ()). ToString (16);55 56//Pin It!57 58Final Booleanexpected =pub_key.equalsignorecase (encoded);59 60if(!expected) {61 62Throw NewCertificateexception ("checkservertrusted:expected public key:" + Pub_key + ", got public key:" +encoded);63 64 }65 66 }67 68}2 Certificate Locking: The issuing of public key certificates for the client is stored in the mobile client (using KeyStore), when HTTPS communication, in the client code to secure t

 Certified Peer-to-peer Examples:Basic and Digest authentication for HTTPPAP and CHAP authentication for PPPMobile phone login password and hidden MMI designSeven Electronic signatures(a) signature to solve what problemSign what? Integrity Protection of the contents of the checkWho's signing? Non-repudiation of the signatory(ii) The dual nature of public key cryptography(iii) Electronic signature =hash+ Public key cryptographyrsa's low-efficiency

() method, in this method, the setting interface pops up a message box, which has two buttons: "OK" "Cancel", the user clicks the different buttons corresponding to different actions. Exception Handling android.os.networkonmainthreadexception--Multithreading problemsEverything settled, thought peace of mind, the result is still a problem!Log start error, get update information exception!!! Debug, Find Exception:android.os.NetworkOnMainThreadException.This exception probably means an except

Software Description: The Beijing Social Security Service Platform provides the Personal Social Insurance Inquiry Service in Beijing, which is always the latest free data, including basic personal information query, Social Security Statement query over the years, four insurance payment query, password reset, password modification, notification and announcement vi

introduce security issues.Note Access script or SQL injection attacks.5. Processing User DataTry to avoid storing or transmitting user-sensitive data, such as email.If you need to access information such as a user name password, you may need to provide a privacy protection policy to the user.Please do not expose sensitive data to apps that are not trusted by third parties.If you need a GUID, create one yourself, do not use the IMEI or

-Packagemanager pm =Getpackagemanager (); in //get the feature manifest file for the specified apk (that is, androidmainfest.xml) - Try { toPackageInfo PackageInfo = Pm.getpackageinfo (Getpackagename (), 0); + returnPackageinfo.versionname; -}Catch(namenotfoundexception e) { the e.printstacktrace (); * return""; $ } Panax Notoginseng } -}View CodeThird, check.You can change the version number at startup by changing the value in

Recently, more and more applications on Android have increased the emphasis on their own protection mechanisms, mainly in several aspects.1 Dex Packers2 So Packers3 Dex is hidden in so and released at the appropriate time.This is a technological advance, and there are professional companies that provide the entire security solution, such as anti-ptrace, or encrypting Dex files. However, at the technical lev

);} else{ cb_bind.settext ("unbound sim card"); Cb_bind.setchecked (false);}And the boolean Android.content.SharedPreferences.getBoolean (String key, Boolean Defvalue) method, Retrieve A Boolean value from the preferences. Parameters:key the name of the preference to retrieve. Defvalue Value to return if this preference does not exist. Returns:returns the preference value if it exists, or defvalue. Throws ClassCastException If there is a preference with the this name, which is

Used to get phone contact information Public StaticString sHA1 (context context) {Try{PackageInfo Info=Context.getpackagemanager (). Getpackageinfo (Context.getpackagename (), packagemanager.get_signatures); byte[] cert = Info.signatures[0].tobytearray (); MessageDigest MD= Messagedigest.getinstance ("SHA1"); byte[] PublicKey =md.digest (CERT); StringBuffer hexstring=NewStringBuffer (); for(inti = 0; i ) {String appendString= Integer.tohexstring (0xF

Add a click event listener for each entryGv_main.setonitemclicklistener (this);The current activity is required to implement the Onitemclicklistener interface while implementing the public void Onitemclick (adapterview/** * When the GridView entry is clicked the corresponding callback * Parent:gridview * View: The currently clicked Entry LinearLayout * Position: Click on the entry corresponding to the location * ID: The line number represented by * /@Override public

version and encoding format in the new file. Build a Android:shape= "Shape"), the shape's value can specify the desired shape (rectangle rectangle, Oval oval, straight line, annular ring)　③. Add additional labels to the Shape Code:3. Set the Background property in the component that needs to use shape shape, and find the new style file by @drawable.4, out of the background property can be referenced, in the Drawable folder Style.xml can also refer to the style, so that the default, focus, press

{ uint size; map_item list [size]; } struct map_item { ushort type; ushort unuse; uint size; uint offset; } Map_list first with a uint description is followed by a size map_item, followed by a corresponding size Map_item description. The MAP_ITEM structure has 4 elements: type denotes the map_item, Dalvik the definition of type Code in executable Format; Size indicates the number of the type to subdivide this item, and offset is the offset of the first