Visit this article to introduce the applet digital signature to grant access to local resources.
Step one: Make the Applet class into a jar packageFor example, execute the following statement on the command line:
JAR-CVF Myapplet.jar ClassStep Two: (Embed the applet in the Web page) (see Appendix for how to embed the Apple method in HTML)Here's how to embed the applet section:
<APPLETCODEBASE = "."CODE = "jcomponent.FileReaderApplet.class"ARCHIVE ="
[i]=[];
for (Var j=0;jif (Mc.hittest (i,j,true)) {
A.linestyle (1,random (0XFFFFFF));
A.moveto (I,J);
A.lineto (I+.5,J);
Fill_data[i][j]=1;
}else{
fill_data[i][j]=0;
}
}
}
for (var i in Fill_data) {
Fill_data[i]=fill_data[i].join ("");
}
Fill_data=fill_data.join (",");
Trace (Fill_data);
return fill_data;
}——————————————————————
My as Signature
Gets the fill area and stores the information in Fill_data ("1" needs to represent a fill, "0" means no pad
;
Using Strongnamereferencelib;
Namespace StrongName
{
class program
{
static void Main (string[] args)
{
Console.WriteLine ( Class1.gethello ());
Console.read ();}}
Recompile the StrongName project and get the new StrongName.exe file. Use ILDASM to open the StrongName.exe file and view its assembly manifest, as shown in Figure 9-17.
Figure 9-17 StrongName.exe assembly Manifest
As you can see from the assembly ma
1. Why to sign1) identity authentication of the senderBecause the developer may be confused by using the same package name to replace the installed program, this ensures that the signature of different packages is not replaced2) guarantee the integrity of the information transmissionThe signature is processed for each file in the package to ensure that the contents of the package are not replaced3) To preve
, but it is generally useless. A file named 2.apk is generated in the example of a secondary framework.
The following example shows how to modify systemui.apk.
2. decompilation command
Apktool D systemui.apk
The systemui directory will be generated under the current directory, and the decompiled file will be here. The directory name can be customized,
For example, apktool D systemui.apk 123 123 is used to generate a directory.
3. decompilation command
Apktool B systemui 456.apk
Compile the sy
The shared interface was recently used in the development process, but the invalid signature was always present when the signature was generated according to his document.According to the testing tools he provided, the results were correct.
The way I get the signature here is to get it in a static page by asynchronously passing the current URL to PHP, as follows
Original address: an example of Java digital signature based on RSA algorithmFirst, preface:Network data security includes the security of the data itself, the integrity of the data (to prevent tampering), the non-repudiation of the data source, and other elements. Encryption algorithm for data encryption can ensure the security of the data itself, the use of Message digest can guarantee the integrity of the data, but also a point is the data source o
In website optimization, the force of the outer chain has been undeniable. And in the Webmaster Circle, site optimization is the main goal is to increase the site outside the chain, thereby increasing the weight of the site. And in the construction of the outside chain, personal webmaster Use most of the non-forum outside the chain, which is the chain of the Forum and mainly by the personality of the signature of the outside chain. How do you do this
0x01 Android Signature mechanismRename the apk to a zip file, and you can see a Meta-inf folder with three files, named MANIFEST.MF, CERT, respectively. SF and Cert.rsa, these are signature files that are generated using Signapk.jar.1, MANIFEST. MF File:The program iterates through all the files in the UPDATE.APK package (entry), generates SHA1 digital signature
"Function signing" is common in Android NDK development, and because Java supports overloading, a method can only be determined by the function name alone. Thus, JNI provides a set of signature rules that uniquely identify a Java-side defined native method with a string.The signature string for each of the Java data types is as follows (from the introduction of the Oracle website JNI):650) this.width=650; "
Digital Signature
When sending a message, the sender generates a Digest from the message text using a hash function, and then encrypts the digest with its own private key, the encrypted digest is sent to the receiver as the digital signature of the message and the message. The receiver first calculates the digest of the message from the received original message using the hash function similar to that of t
To sign?
So many people develop Android, it is entirely possible that everyone will put the class name and package name into the same name. How can we distinguish this time? Signatures are differentiated at this time.
Because the developer may use the same package name to confuse and replace the installed program, the signature can ensure that the same name is used, but the packages with different signatures are not replaced.
If an APK uses a key
1, I now do not have a personal CA certificate, using the. How does Citic invest in online trading to ensure safety?
If you do not currently have a personal CA certificate, use. Citic Building online transactions, the system is actually using the CA certificate RSA system to encrypt.When you enter your account and password to log in, the system uses the online trading server CA certificate to establish an encrypted secure channel. You enter the account number and password, the clie
RSA Signature java/php/c# Version and Java verification implementation
???? in the open platform area, the SDK needs to be provided to the ISV, and signing is one of the features that need to be provided in the SDK. Because the development language used by ISVs is not single, the SDK needs to be available in multiple languages. such as Java, PHP, C #. In addition, in e-commerce, especially in the payment field, the security requirements are relative
http://blog.csdn.net/linghu_java/article/details/6701666Andriod application If you want to install on a phone or simulator, you must have a signature!1. The meaning of the signatureIn order to guarantee the legal ID of each application developer, to prevent some of the open vendors from possibly confusing the installed program by using the same package name, we need to uniquely sign our released APK file to ensure consistency for each release we publi
Andriod application If you want to install on a phone or simulator, you must have a signature!1. The meaning of the signatureIn order to guarantee the legal ID of each application developer, to prevent some of the open vendors from possibly confusing the installed program by using the same package name, we need to uniquely sign our released APK file to ensure consistency for each release we publish ( such as Automatic Updates will not be installed bec
As far as security is concerned, all client and server-side communications should be transmitted over encrypted channel (HTTPS), and the plaintext HTTP channel will be a hotbed of man-in-the-middle and its various variants. The so-called man-in-the-middle attack simply refers to malicious hackers can be in the client and the server side of the clear-text communication channels, hackers can listen to communications, steal confidential information, even can tamper with the communication content, a
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Back to Android, there are many people who have developed Android applications this year (because there are too many people who want to make money ). Are the "package name and class name" prone to "crash? With the signature file, these can be well solved.
If an APK uses a key signature, the file with the other key signature cannot be installed
identity of the signature-stored in the keychain-and a certificate-saved in your developer account-to sign and launch your app. This information is used to uniquely identify you or your team, so it's important to keep it safe. This chapter covers common tasks that you can go to protect and hold your signature logo and certificates within the cycle of your project.About Signing identities and certificates o
Android Application Signature
The Android system requires that all programs be installed with digital signatures. If no digital signature is available, the system will not install and run this program, whether it is a simulator or a real mobile phone. Therefore, before running the debugging program on a device or simulator, you must set a digital signature for t
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