signature

I have a java server that communicates with a java client via json-rpc. The client is supposed to report internal stats to the server which modifies the servers behaviour. Both client and server compenents are written in house so I can control what the client does and how it reports stats but is there a way I can verify that the client code hasn't been modified? If it has it will still service the client but using some default behaviours. The clients will be publicly available so it's not a big deal for someone to decompile them and alter behaviours. Simply having the client send a signature

many antivirus programs using signature-based malware detection. Here is creating signatures for ClamAV . I can understand how they create signatures considering that the whole file is a malware, but I couldn't understand how to find malware when it is in the body of the file - the hash would be another. Anybody knows? Grijesh Chauhan My answer is not specific to ClamAV; instead I've answered in a general sense. Maybe this is helpful for you. First of all a virus signature is not necessarily a hash value of a file. A signature is usually a string of bits found in a file, although a hash value

currently I'm interfacing the Twitter API using the OAuth protocol and writing the code in Python. As most of the users out there, I think the toughest part of the specs is dealing with signatures. After wandering around the web in search for a solution, I decided to go for my custom code, so as to have a better understanding of what is going on. For the sake of other users, I'm posting here a very simple and short implementation of the SHA1 signature specs in Python: import hmac from hashlib import sha1 from urllib import quote, urlencode from base64 import b64encode from urlparse import

I’m trying to use Bouncy Castle v1.7 on a Windows Mobile 6.5 device. I’m trying to execute the following code: ISigner signer = SignerUtilities.GetSigner("SHA256withRSA"); Using the Bouncy Castle binaries On the Windows Mobile device, the code results in the following exception being thrown: "The version of the assembly System, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=B77A5C561934E089 cannot be loaded by this version of the Microsoft .NET Compact Framework." On a classic desktop application (using the whole .NET framework), this code runs without problem. So I’m guessing there is an

Using Python 3.x, I'm trying to get the name of all positional arguments from some function i.e: def foo(a, b, c=1): return Right now I'm doing this: from inspect import signature, _empty args =[x for x, p in signature(foo).parameters.items() if p.default == _empty] When the function alows *args i.e: def foo(a, b, c=1, *args): return I'm adding the line: args.remove("args") I was wondering if there is a better way to achieve this. As suggested by Jim Fasarakis-Hilliard one better way to deal with *args case is using Parameter.kind: from inspect import signature, Parameter args =[] for x, p in

sub count-a { my $word = "banana"; my $count = 0; my $foo; # Source of error: $foo intentionally not given a value. # The value ought to be zero. while True { $foo = index $word, "a", $foo; last unless $foo.defined; $foo++; $count++ } return $count; } say count-a; Is this error message wrong? Cannot resolve caller index(Str: Str, Any); none of these signatures match: (Str:D $: Cool:D $needle, *%_) (Str:D $: Str:D $needle, *%_) (Str:D $: Cool:D $needle, Cool:D $pos, *%_) (Str:D $: Str:D $needle, Int:D $pos, *%_) in sub count-a at scrap.p6 line 11 in block <unit> at scrap.p6 line 18 The error