electronic signature android

1. Right-click Project in Eclipse Project, choose Android tool in pop-up option → Generate signature app Package2. Select the Android project to be packaged3, if there is a private key file, select the private key file to enter the password, if there is no private key file see 6th and 7 steps to create a private key file4. Enter the private key alias and password

Android packaged signature from build keystore to complete signatureFirst of all,we need aKeyStore,of course it's already there .:Cmdunder:Into theJDKof thebinCatalogue,that way., Android.keystoreThe file will be generated in this directory,We need this file when we sign it.C:\Program Files\java\jdk1.6.0_10\bin>keytool-genkey-alias android.keystore-keyalg rsa-validity 20000-keystore Android.keystoreInputKey

This article provides an example of how the Android handwriting signature is implemented, and the product requires users to sign an agreement on the app. So have to get a handwritten signature version, refer to some material oneself wrote a paintview to inherit view, realize the signature function. Package com.*

A month ago, mobile security company Bluebox found a very serious security vulnerability, which affects almost 99% of Android devices in the past four years. This vulnerability allows hackers to inject malicious programs into any application without changing the encrypted signature certificate. This vulnerability is harmful. On Tuesday, Symantec, a famous security company, said it was the first to successfu

Use Android JNI to get the application signature.Get based on build your own signature password, which prevents others from recompiling to find their source code password.Jstring java_com_masonsdk_jni_jniutil_getpwd (jnienv* env, Jobject thizz,jobject thiz) {Jclass Native_clazz = env-> Getobjectclass (Thiz); Get the ID of the Getpackagemanager method Jmethodid Methodid_func =env->getmethodid (Native_claz

This article describes the Android implementation of the method of acquiring signatures and public keys. Share to everyone for your reference. Specifically as follows: 1. The Java code is as follows: Private byte[] Getsign (context context) { Packagemanager pm = Context.getpackagemanager (); List 2. The Java code is as follows: public static String Getpublickey (byte[] signature) { t

To sign using the command line method, two command line tools in JDK are required: keytool.exeand jarsigner.exe. You can sign the apk file in the following two steps: 1. # Keytool-genkey-v-keystore key. pem-alias aliasname-keyalg RSA-validity 3000 Where the androidguy-release.keystore represents the key file name to be generated, which can be any legal file name. Androidguy indicates the alias of the key, which is used for signing the apk file. RSA indicates the key algorithm. 30000 indicates th

INFO, "Jnitag", "packageinfo.signatures[" is null "); return NULL;} Jobject signature_object = env->getobjectarrayelement (signature_object_array, 0); Env->deletelocalref (Package _info_object);//signature.tocharsstring () Jclass signature_class = Env->getobjectclass (Signature_object); Methodid = Env->getmethodid (Signature_class, "Hashcode", "() I"); Env->deletelocalref (signature_class); int signature_string = Env->callintmethod (Signature_object, Methodid); Helloworld::hashcode = Signature_

First, view the local KeyStore file (if there is a keystore password)Command: keytool-list-v-keystore destination file pathSecond, view the three-party application or System application signatureRight-click apk extract, the target file is the Cert.rsa file in the Meta-inf folder, view the certificate information by command Keytool.exe commandMD5, SHA1, SHA256 values and signature algorithms for signatures can be viewedCommand: Keytool-printcert-file d

.) The workaround is: Aeo_android.keystore should be changed to Myandroid.keystore with the file name System processed in Toolkey.exeEnter new password again: Keytool error: Java.io.filenotfoundexception:e: (Access denied. It is best to use the default name, and do not write to the directory of other disks. The default is in the Java installation directory, more permissions for the Java (C:\Program Files (x86) \java) directory.C:\users\administrator> "C:\Program Files (x86) \java\jdk1.7.0_55\bin

To publishProgramDevelopers need to use their own digital certificates to sign the APK package. There are two methods. 1. Use JDK and keytool (used to generate digital certificates) and jarsigner (used to sign digital certificates) in the command line to sign the APK package. 2. Use the ADT export wizard (wizard) for signature (if there is no digital certificate, you may need to generate a digital certificate ). Previously, I wrote a blog about

Anti-debugging principle many times, we need to make changes to modify the application instructions, and then re-packaged to run, re-packaging needs to be signed. We use the change of signature to reverse debug. The anti-debug implementation code is as follows: in order to be more hidden, the comparison function may be implemented in the so layer, as below, can also be implemented more hiddenSolution:Find the relevant logic by searching for keywords s

the target apk corresponding file to test. Including the subsequent switch statements are also analyzed, the following look at the print Toast Smali statement (in the actual case may need to change the variable name, because it may be followed by the variable name conflict)Const-string V0, "This is a test" const/16 v1, 0x3e8 invoke-static {p0, V0, v1}, Landroid/widget/toast;->maket Ext (landroid/content/context; Ljava/lang/charsequence;i) Landroid/widget/toast; Move-result-object v0

1. In the Eclipse project, right-click the project and choose Android> Generate a signature application package from the shortcut menu: 2. Select the android project to be packaged: 3. If the private key file already exists, select the private key file and enter the password. If there is no private key file, see steps 6th and 7 to create the private key f

Android m platform requires permissions when writing app tests using Mediarecoder to record calls up and down through Audiosource.voice_callandroid:name= "Android.permission.CAPTURE_AUDIO_OUTPUT"/> android:name= "Android.permission.RECORD_AUDIO"/>android:name = "Android.permission.WRITE_EXTERNAL_STORAGE"/> But in requesting permissionandroid:name= "Android.permission.CAPTURE_AUDIO_OUTPUT"/>, the app will crash outThe reason is that this privilege i