md5

using php to create a joomla user password?

Hi all, I'm trying to create a custom registration component for Joomla, and I was wondering if anyone knew how to create the correct password encryption for joomla? Joomla passwords look like this : fbae378704687625a410223a61c66eb1:VM6DwmVWHTwpquDq51ZXjWWADCIc93MR Which I believe are md5 (or something) and one way encryption? Am just...

md5 hash for file without File Attributes

Using the following code to compute MD5 hashs of files: Private _MD5Hash As String Dim _BinaryData As Byte() = New Byte(FileUpload1.PostedFile.InputStream.Length) {} FileUpload1.PostedFile.InputStream.Read(_BinaryData, 0, _BinaryData.Length) Dim md5 As New System.Security.Cryptography.MD5CryptoServiceProvider Dim md5hash() As Byte...

How can I add a "Loading...Please wait..." feature?

I have a very simple table on my website, that displays different URL's. I have an input field where I can type in a URL and click 'Submit' to add additional URL's. However, I want to add an MD5 grabbing feature to this, using @md5_file(); to grab the MD5 of the URL and check to make sure it's the MD5 it should be, before adding it to ...

Take most significant 8 bytes of the MD5 hash of a string as a long (in Ruby)

Hey Friends, I'm trying to implement a java "hash" function in ruby. Here's the java side: import java.nio.charset.Charset; import java.security.MessageDigest; /** * @return most significant 8 bytes of the MD5 hash of the string, as a long */ protected long hash(String value) { byte[] md5hash; md5hash = md5Digest.digest(value.g...

Using md5_file(); doesn't return the md5 sometimes?

<?php include_once('booter/login/includes/db.php'); $query="SELECT * FROM shells"; $result=mysql_query($query); while($row=mysql_fetch_array($result, MYSQL_ASSOC)){ $hash = @md5_file($row['url']); echo $hash . "<br>"; } ?> The above is my code. Usually it works flawlessly on most urls, but every now and then it will just skip the...

Are fragments of hashes collision-resistent?

If you only use the first 4 bytes of an MD5 hash, would that mean theoretically only 1 in 255^4 chance of collision? That is, are hashes designed such that you only have to use a small portion of the returned hash (say the hash is of a file of some size)? ...

A way to make md5_file() faster?

I currently use md5_file(); to run through about 15 URLs and verify their MD5. Is there a way I can make this faster? It takes far too long to run through all of them. Sorry if this isn't a good question, I just realized its only three (four if you count this one) sentences long. ...

md5_file() not working with remote content fetched by URL

Here is my code relating to the question: $theurl = trim($_POST['url']); $md5file = md5_file($theurl); if ($md5file != '96a0cec80eb773687ca28840ecc67ca1') { echo 'Hash doesn\'t match. Incorrect file. Reupload it and try again'; When I run this script, it doesn't even output an error. It just stops. It loads for a bit, and...

hash fragments and collisions cont.

For this application I've mine I feel like I can get away with a 40 bit hash key, which seems awfully low, but see if you can confirm my reasoning (I want a small key because I want a small filename and the key will be converted to a filename): (Note: only accidental collisions a concern - no security issues.) A key point here is that...

Is MD5 really that bad?

I've heard that MD5 is "broken" (in the context of password encryption). But I don't understand why! I've read the theory, but can't see it happening in practice... I have an MD5 hash 99e9446e78aac2056d3903e1adb8fbcd And a simple bit of code to produce it $salt="#bh35^&Res%"; $pass="***"; //number of characters is not equal to number ...

Need help... how to add md5 to password field in php?

Hi mates, i looking some help and nice attention here.. i bought some php script many years ago and now no suport anymore... i just want to add md5 to password field.. here my form: <?php $SQL = "SELECT * from USERS WHERE USERNAME = '$_SESSION[username]'"; $result = @mysql_query( $SQL ); $row = @mysql_fetch_array( $result ); include...

Can I use part of MD5 hash for data identification?

I use MD5 hash for identifying files with unknown origin. No attacker here, so I don't care that MD5 has been broken and one can intendedly generate collisions. My problem is I need to provide logging so that different problems are diagnosed easier. If I log every hash as a hex string that's too long, inconvenient and looks ugly, so I'd...

PHP:How to send the original password to the user when he clicks forgot password which is encrypted by using md5?

Hi all, I am using md5 to encrypt the passwords in my project. When user clicks on forgot password and submits his email,I have to send His password to him. But the password is encrypted using md5.Generating new password should not do.Because In this project admin can see all the details of the user. So i have to show the original pas...

How do I sign requests reliably for the Last.fm api?

I'm trying to implement authorization through Last.fm. I'm submitting my arguments as a Dictionary to make the signing easier. This is the code I'm using to sign my calls: public static string SignCall(Dictionary<string, string> args) { IOrderedEnumerable<KeyValuePair<string, string>> sortedArgs = args.OrderBy(arg => arg.Key); s...

Why is the same input returning two different MD5 hashes?

Alright, I have two files. They are the EXACT SAME. The first file is: http://iadsonline.com/servconfig.php And the second file is: http://xzerox.info/servconfig.php However, when I use md5_file() to get their MD5, They return two different MD5's. The first returns cc7819055cde3194bb3b136bad5cf58d, which is incorrect, and the second ...

Python MD5 Hash Faster Calculation

Hi everyone. I will try my best to explain my problem and my line of thought on how I think I can solve it. I use this code for root, dirs, files in os.walk(downloaddir): for infile in files: f = open(os.path.join(root,infile),'rb') filehash = hashlib.md5() while True: data = f.read(10240) if len(data) =...

How to get the MD5 hex hash for a file using VBA?

How can I get the MD5 hex hash for a file using VBA? I need a version that works for a file. Something as simple as this Python code: import hashlib def md5_for_file(fileLocation, block_size=2**20): f = open(fileLocation) md5 = hashlib.md5() while True: data = f.read(block_size) if not data: br...

How do you verify that 2 copies of a VB 6 executable came from the same code base?

I have a program under version control that has gone through multiple releases. A situation came up today where someone had somehow managed to point to an old copy of the program and thus was encountering bugs that have since been fixed. I'd like to go back and just delete all the old copies of the program (keeping them around is a com...

md5hash performance with big files for check copy files in shared folder

Hi all, My app Windows forms .NET in Win XP copy files pdfs in shared network folder in a server win 2003. Admin user in Win2003 detects some corrupt files pdfs, in that shared folder. I want check if a fileis copied right in shared folder Andre Krijen says me the best way is to create a MD5Hash of original file. When the file is co...

Distributions and hashes

Has anyone ever had an incidence of downloading software from a genuine site, where an MD5 or SHA series hash for the download is also supplied and then discovered that the hash calculated from the downloaded artifact doesn't match the published hash? I understand the theory but am curious how prevalent the problem is. Many software pub...