hash

Using a Javascript Variable & Sending to JSON

Hello all! I'm trying to take a URL's hash value, send it through a function, turn that value into an object, but ultimately send the value to JSON. I have the following setup: function content(cur){ var mycur = $H(cur); var pars = "p="+mycur.toJSON(); new Ajax.Updater('my_box', 'test.php', { parameters: pars }); }...

How can I hash a string to an int using c++?

I have to write my own hash function. If I wanted to just make the simple hash function that maps each letter in the string to a numerical value (i.e. a=1, b=2, c=3, ...), is there a way I can perform this hash on a string without having to first convert it to a c-string to look at each individual char? Is there a more efficient way of h...

Java to JavaScript (Encryption related)

Hi guys, I'm having difficulties to get the same string in Javascript and I'm thinking that I'm doing something wrong... Java code: import java.io.UnsupportedEncodingException; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; import java.util.Date; import java.util.GregorianCalendar; import sun.misc....

How to sort a Ruby Hash by number value?

Hi everyone, I have a counter hash that I am trying to sort by count. The problem I am running into is that the default Hash.sort function sorts numbers like strings rather than by number size. i.e. Given Hash: metrics = {"sitea.com" => 745, "siteb.com" => 9, "sitec.com" => 10 } Running this code: metrics.sort {|a1,a2| a2[1]<=>a1[1...

Are there any security vulnerabilities in this PHP code?

Hi. I just got a site to manage, but am not too sure about the code the previous guy wrote. I'm pasting the login procedure below, could you have a look and tell me if there are any security vulnerabilities? At first glance, it seems like one could get in through SQL injection or manipulating cookies and the ?m= parameter. define ( ...

Ruby method Array#<< not updating the array in hash

Inspired by http://stackoverflow.com/questions/2552363/how-can-i-marshal-a-hash-with-arrays I wonder what's the reason that Array#<< won't work properly in the following code: h = Hash.new{Array.new} #=> {} h[0] #=> [] h[0] << 'a' #=> ["a"] h[0] #=> [] # why?! h[0] += ['a'] #=> ["a"] h[0] #=> ["a"] # as expected Does it have to do wit...

AS3 and hashing

Is it possible to hash flv videos so it is unplayable by itself and the format is unrecognizable by softwares, but i could actually de-hash them and play in my as3 script? This is going to be realized on a CD so I can't use server scripts. ...

How do I delete a [sub]hash based off of the keys/values of another hash?

Lets assume I have two hashes. One of them contains a set of data that only needs to keep things that show up in the other hash. e.g. my %hash1 = ( test1 => { inner1 => { more => "alpha", evenmore => "beta" } }, test2 => { inner2 => { more => "charlie", somethingelse => "delta" } }, test3 => { inner9999 => { oh...

How to generate a mixed-case hash in Python?

I am having a hard time figuring out a reasonable way to generate a mixed-case hash in Python. I want to generate something like: aZeEe9E Right now I'm using MD5, which doesn't generate case-sensitive hashes. Do any of you know how to generate a hash value consisting of upper- and lower- case characters + numbers? - Okay, GregS's ad...

HELP!! Delayed-job: Rake aborted! Can't modify frozen hash

Too bad even the trace doesn't say which hash is involved. Sorry this post is long: am trying to provide enough context to be meaningful. Occurs intermittently when rake jobs:work is pulling a command out of delayed_jobs while my status observer is in the process of parsing a log file for detailed results of the previous delayed_job de...

File hash: Does it change for same content but in different order?

Let's say there is a file called myfile.txt with the following contents: one two three Another file called yourfile.txt with following contents: two three one Will the SHA-1 hash be the same for both of these files, because the content are same but in different order? ...

Return hash with modified values in Ruby

I'm trying this: {:id => 5, :foos => [1,2,3]}.each {|k,v| v.to_s} But that's returning this: {:id=>5, :foos=>[1, 2, 3]} I'd like to see this: {:id=>"5", :foos=>"[1, 2, 3]"} I've also tried variations of Hash#collect and Hash#map. Any ideas? ...

Extract the SHA1 hash from a torrent file.

I've had a look around for the answer to this, but I only seem to be able to find software that does it for you. Does anybody know how to go about doing this in python? ...

How to quickly generate a new string hash after concatenating 2 strings

If my math is right, I can quickly generate a new hash value for the concatenation of two strings if I already have the individual hash values for each string. But only if the hash function is of the form: hash(n) = k * hash(n-1) + c(n), and h(0) = 0. In this case, hash( concat(s1,s2) ) = k**length(s2) * hash(s1) + hash(s2) eg. h...

How to transform phrases and words into MD5 hash?

Can anyone, please, explain to me how to transform a phrase like "I want to buy some milk" into MD5? I read Wikipedia article on MD5, but the explanation given there is beyond my comprehension: "MD5 processes a variable-length message into a fixed-length output of 128 bits. The input message is broken up into chunks of 512-bi...

Looking for a fast hash-function.

Hello, I'm looking for a special hash-function. Let's say I have a large list of strings, if I order them by their hash-values they should be ordered quasi randomly. The most important point is: it must be super fast. I've tried md5 and sha1 and they're using to much cpu power. Clashes are not a problem. I'm using javascript, so it ...

Ajax back button jquery - Need full example step by step.

Hi. I need help supporting back button with jquery ajax.load method. I have tried a couple of plugins but i cant get any of them to work. I am loading my content like this: $('.pagination a').click(function(){ var url = $(this).attr('href'); ajaxLoad(url,null,'.container'); return false;...

[Perl] Retrieve the reference

Hello, with the hash below, I would like the clients array's reference : my $this = { 'name' => $name, 'max_clients' => $max_clients, 'clients' => () }; I can't do "\$this{'clients'};" to retrieve the reference. ...

Ruby: How can I have a Hash take multiple keys?

I'm taking 5 strings (protocol, source IP and port, destination IP and port) and using them to store some values in a hash. The problem is that if the IPs or ports are switched between source and destination, the key is supposed to be the same. If I was doing this in C#/Java/whatever I'd have to create a new class and overwrite the hash...

Can I put some form of If..End blocks inside of a hash definition?

I am creating a web application to integrate with Chargify. I want to return a hash with customer_id set if the user has a customer associated with the account, and customer_attributes if a customer has to be created. Is there any way that I could do this with an if..end block inside of the hash definition. For example, I would be wanti...