verification

Stopping Bot [SO] - PHP

由 北战南征 提交于 2020-01-24 19:17:32
问题 I saved this code in index.php and after filling i clicked Submit button, and then a verification page was shown to me ! My question is how did it detected that it was not from the original server ? [i hope they do not use the referrer as it can be disabled easily] My Fake Code <html> <form id="post-form" action="http://stackoverflow.com/questions/ask/submit" method="post"> <input id="title" name="title" type="text" maxlength="300" tabindex="100" class="ask-title-field" value=""> <textarea id

Is using 2 different hash functions a good way to check for file integrity?

由 微笑、不失礼 提交于 2020-01-23 06:58:26
问题 I have a website where users can upload their files; these are stored on the server and their metadata recorded in a database. I'm implementing some simple integrity checks, i.e. "is the content of this file now byte-for-byte identical as when it was uploaded?" An example: for content of userfile.jpg , MD5 hash is 39f9031a154dc7ba105eb4f76f1a0fd4 and SHA-1 hash is 878d8d667721e356bf6646bd2ec21fff50cdd4a9 . If this file's content changes, but has the same MD5 hash before and after, is it

failed to verify a dsawithSha1 signed message against a DSA public key in python/m2crypto

由 若如初见. 提交于 2020-01-17 08:06:27
问题 - I'm trying to verify a signed message using a x509 certificate holding a dsa public key. The x509 certificate was provided by an SAP System in PKCS7 encoding and after converting in PEM with openssl I'm able to read the contents (openssl x509 -in sapcert.pem -inform pem -text) It holds a public key in dsaEncryption, showing me the DSA parameters y(pub), p, q and g. Because I did not found a DSA implementation in M2Crypto x509 class, i tried to build the DSA public key by myself. Therefor I

The verification Procedure and making new users logic, parse.com

由 ◇◆丶佛笑我妖孽 提交于 2020-01-17 08:03:51
问题 I am stuck at how to think when to create new anonymous users. This is how my application is setup right now. I got three ViewControllers. 1) GetPhoneController , 2) VerificationController , 3) ViewController GetPhoneController: is the first view where, IF the user that opened the application has no user stored meaning [PFUser currentUser]; is equal to NULL then this view will be run otherwise ViewController will execute ( the check is done in AppDelegate ). This view will just get the user's

How do I control access to my server-side data?

由 China☆狼群 提交于 2020-01-14 04:57:09
问题 I have created an iPhone application which fetches data held on a server in an XML file. How do I check that the request for the data is coming from my app and not from some other source such as another iPhone app or a desktop browser since currently you could just trace the iPhone request on your LAN with Wireshark and then use the captured URL to load the data in a desktop browser. I'm thinking I'm going to need to serve the file via PHP or something and use some sort of User Agent

openSSL verify RFC 3161 TimeStampResp signed with self-signed certificate

由 喜你入骨 提交于 2020-01-14 03:15:14
问题 I generated a RFC 3161 TimeStampResp out of a RFC 3161 TimeStampReq using openSSL. Therefore I used a self signed CA cert and a TSA cert issued by the self-signed CA using this command: openssl ts -reply -queryfile request.tsq -signer TSAcert.pem -out response.tsr The response was created. openssl ts -reply -text -in response.tsr genereated the following output: Status info: Status: Granted. Status description: unspecified Failure info: unspecified TST info: Version: 1 Policy OID: tsa_policy1

Need advice on checking signature/certificate of a signed pdf using java

由 陌路散爱 提交于 2020-01-05 05:41:08
问题 Several questions to the code below. googled, read javadoc import org.apache.pdfbox.io.IOUtils; import org.apache.pdfbox.pdmodel.PDDocument; import org.apache.pdfbox.pdmodel.PDDocumentCatalog; import org.apache.pdfbox.pdmodel.encryption.InvalidPasswordException; import org.apache.pdfbox.pdmodel.interactive.digitalsignature.PDSignature; import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm; import org.apache.pdfbox.pdmodel.interactive.form.PDField; import org.apache.pdfbox.pdmodel

error detection in static analysis and symbolic execution

由 时光总嘲笑我的痴心妄想 提交于 2020-01-05 04:09:15
问题 what kind of errors static analysis (e.g. compiler) can detect and symbolic execution can not detect? and what kind of errors that symbolic execution can detect and static analysis can not detect? for example can symbolic execution detect syntax errors? 回答1: In short, static analysis is capable of spotting coding issues, such as bad practices. For example, if you declare (unnecessarily) a class field as public, a static analysis tool may warn you that such field should be declared as private.

Android mobile number verification process

由 为君一笑 提交于 2020-01-03 11:32:14
问题 I need help from you all in Android mobile number verification process. I have an application, Where the user enters his mobile number. I need to verify that the user has entered his own mobile number and not someone else mobile number in that application. How can i achieve that. Any ideas will be of great help. I am very much confused in how to verify the user input. looking forward for your replies. Thanks 回答1: Answer would be very easy. You can try the same logic of Mobile Banking Process.

Adding verification step in formFlow - Check if topping is in stock

由 空扰寡人 提交于 2020-01-02 09:26:27
问题 I am working on using the form flow example found Here The example uses formFlow to help the user pick out the toppings they want on their sandwich. I'm trying to add a verification step that checks if each of the toppings they add is in stock and if it isn't send an apology message and prompt the user to enter a different topping instead. A code example is seen below: public static IForm<SandwichOrder> BuildForm() { return new FormBuilder<SandwichOrder>() .Message("Welcome to the sandwich
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