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  • php script to generate checksum from md5

    - by sumit
    In order to calculate the checksum i need following things. these parameters are concatenated in a constant (no spaces) string made up of the values of the following parameters in the exact order listed below: o Secret Key o Merchant id o Currency o Total amount o Item list (item_name_1, Item_amount_1, item_quantity_1 to item_name_N, Item_amount_N, item_quantity_N) o Timestamp e.g In that case the string befor hash will be: pLAZdfhdfdNh57583USD69.99Tier2 item69.9912010-06-14.14:34:33 And using the MD5 hash function the result is: ghvsaf764t3w784tbjkegbjhdbgf i want to know how can i create a php script that will call md5 hash function with the inputs given above and based on that it will generate the hash function value that will be the checksum value for my coding..

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  • Selenium testing with checksums (md5)

    - by Peter
    I am new at selenium testing and am writing a bunch of tests for a webpage that relies heavily on javascript user interaction. At first I wrote a lot of assertions of the style If I press button A" then assert number of visible rows = x, assert checkboxes checked are such assert title = bar .... [20 more] and so on. Then I switched to checksumming the HTML using MD5: If I press button A" then assert md5(html) = 8548bccac94e35d9836f1fec0da8115c. And it made my life a whole lot easier... But is this a bad practice in any way?

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  • PHP:How to send the original password to the user when he clicks forgot password which is encrypted

    - by kishore
    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. The initial password is very important. SO how can i decrypt the password or any other way to send him original password? Thanks in advance...

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  • How can I copy files to an external drive and verify their integrity in OS X?

    - by jedavis
    I'm moving large amounts of data from one external drive to another larger one. The files are important and the smaller drives need to be cleared and reused (HD camera). Is there some utility for moving files and verifying their integrity? I've been using this command find . -type f -exec md5 '{}' \; > md5list.txt in the terminal to create a list of MD5s for each file then using diff to compare the two. However, I am moving 320GB at a time, which takes a while by itself. Computing the checksums takes another hour or so. It would be much more efficient to do this on the fly, during the copy. I'm just hoping someone has already written the software...

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  • How do I sign requests reliably for the Last.fm api in C#?

    - by Arda Xi
    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); string signature = sortedArgs.Select(pair => pair.Key + pair.Value). Aggregate((first, second) => first + second); return MD5(signature + SecretKey); } I've checked the output in the debugger, it's exactly how it should be, however, I'm still getting WebExceptions every time I try. Here's my code I use to generate the URL in case it'll help: public static string GetSignedURI(Dictionary<string, string> args, bool get) { var stringBuilder = new StringBuilder(); if (get) stringBuilder.Append("http://ws.audioscrobbler.com/2.0/?"); foreach (var kvp in args) stringBuilder.AppendFormat("{0}={1}&", kvp.Key, kvp.Value); stringBuilder.Append("api_sig="+SignCall(args)); return stringBuilder.ToString(); } And sample usage to get a SessionKey: var args = new Dictionary<string, string> { {"method", "auth.getSession"}, {"api_key", ApiKey}, {"token", token} }; string url = GetSignedURI(args, true); EDIT: Oh, and the code references an MD5 function implemented like this: public static string MD5(string toHash) { byte[] textBytes = Encoding.UTF8.GetBytes(toHash); var cryptHandler = new System.Security.Cryptography.MD5CryptoServiceProvider(); byte[] hash = cryptHandler.ComputeHash(textBytes); return hash.Aggregate("", (current, a) => current + a.ToString("x2")); }

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  • Unique identifier for an email

    - by Skywalker
    I am writing a C# application which allows users to store emails in a MS SQL Server database. Many times, multiple users will be copied on an email from a customer. If they all try to add the same email to the database, I want to make sure that the email is only added once. MD5 springs to mind as a way to do this. I don't need to worry about malicious tampering, only to make sure that the same email will map to the same hash and that no two emails with different content will map to the same hash. My question really boils down to how one would combine multiple fields into one MD5 (or other) hash value. Some of these fields will have a single value per email (e.g. subject, body, sender email address) while others will have multiple values (varying numbers of attachments, recipients). I want to develop a way of uniquely identifying an email that will be platform and language independent (not based on serialization). Any advice?

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

    - by alhambraeidos
    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 copied, verify the MD5Hash file of the copied one with the original one. I have big pdf files. apply md5 hash about big file, any performance problem ?? If I only check (without generate md5 hash) Length of files (original and copied) ?? Thanks in advanced.

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  • Is it okay to truncate a SHA256 hash to 128 bits?

    - by Sunny Hirai
    MD5 and SHA-1 hashes have weaknesses against collision attacks. SHA256 does not but it outputs 256 bits. Can I safely take the first or last 128 bits and use that as the hash? I know it will be weaker (because it has less bits) but otherwise will it work? Basically I want to use this to uniquely identify files in a file system that might one day contain a trillion files. I'm aware of the birthday problem and a 128 bit hash should yield about a 1 in a trillion chance on a trillion files that there would be two different files with the same hash. I can live with those odds. What I can't live with is if somebody could easily, deliberately, insert a new file with the same hash and the same beginning characters of the file. I believe in MD5 and SHA1 this is possible.

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  • How to access website CMS with only access to database

    - by user1741615
    I have a website that uses an "in-house" cms and I don't know the login details. The platform itself doesn't have the "reset your password" functionality. I do have access to ftp and phmyadmin and I found the SQL table containing the user details, but of course the password is MD5 encryption. I tried manually creating a user in php my admin and filling in a password encrypted in MD5 (used a md service online for that), but it still doesn't work. Does anybody know other tricks I can use? Thanks.

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  • Missing Password check

    - by AAA
    I am using the code below, it checks for empty fields and verifies email, but even if the password is correct it won't login. the password has been inserted with md5 protection, below is the code. I am new to this so please bare with me. Thanks! PHP: session_start(); //Checks if there is a login cookie if(isset($_COOKIE['ID_my_site'])) //if there is, it logs you in and directes you to the members page { $email = $_COOKIE['ID_my_site']; $pass = $_COOKIE['Key_my_site']; $check = mysql_query("SELECT * FROM accounts WHERE email = '$email'")or die(mysql_error()); while($info = mysql_fetch_array( $check )) { if ($pass != $info['password']) { } else { header("Location: home.php"); } } } //if the login form is submitted if (isset($_POST['submit'])) { // if form has been submitted // makes sure they filled it in if(!$_POST['email'] | !$_POST['password']) { die('You did not fill in a required field.'); } // checks it against the database if (!get_magic_quotes_gpc()) { $_POST['email'] = addslashes($_POST['email']); } $check = mysql_query("SELECT * FROM accounts WHERE email = '".$_POST['email']."'")or die(mysql_error()); //Gives error if user dosen't exist $check2 = mysql_num_rows($check); if ($check2 == 0) { die('That user does not exist in our database. <a href=add.php>Click Here to Register</a>'); } while($info = mysql_fetch_array( $check )) { $_POST['password'] = stripslashes($_POST['password']); $info['password'] = stripslashes($info['password']); $_POST['password'] = md5($_POST['password']); //gives error if the password is wrong if ($_POST['password'] != $info['password']) { die('Incorrect password, please try again.'); } else { // if login is ok then we add a cookie $_POST['email'] = stripslashes($_POST['email']); $hour = time() + 3600; setcookie(ID_my_site, $_POST['email'], $hour); setcookie(Key_my_site, $_POST['password'], $hour); //then redirect them to the members area header("Location: home.php"); } } } else { // if they are not logged in <form action="<?php echo $_SERVER['PHP_SELF']?>" method="post"> <table border="0"> <tr><td colspan=2><h1>Login</h1></td></tr> <tr><td>email:</td><td> <input type="text" name="email" maxlength="40"> </td></tr> <tr><td>Password:</td><td> <input type="password" name="password" maxlength="50"> </td></tr> <tr><td colspan="2" align="right"> <input type="submit" name="submit" value="Login"> </td></tr> </table> </form> } Here is the registration code: PHP: // here we encrypt the password and add slashes if needed $_POST['password'] = md5($_POST['password']); if (!get_magic_quotes_gpc()) { $_POST['password'] = mysql_escape_string($_POST['password']); $_POST['email'] = mysql_escape_string($_POST['email']); $_POST['full_name'] = mysql_escape_string($_POST['full_name']); $_POST['user_url'] = mysql_escape_string($_POST['user_url']); } // now we insert it into the database $insert = "INSERT INTO accounts (Uniquer, Full_name, Email, Password, User_url) VALUES ('".$uniquer."','".$_POST['full_name']."', '".$_POST['email']."','".$_POST['password']."', '".$_POST['user_url']."')"; $add_member = mysql_query($insert); After using ini_set function i got to see the error, i am getting this message but not sure what it means: Notice: Undefined index: password in /var/www/domain.com/htdocs/login.php on line 103 Notice: Use of undefined constant password - assumed 'password' in /var/www/domain.com/htdocs/login.php on line 11

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  • how convert this c# cod to php

    - by user3694473
    I'm trying to convert this class from C# to php and i wante to convert this c# class to php ... how i can do it Thanks in advance hi I'm trying to convert this class from C# to php and i wante to convert this c# class to php ... how i can do it Thanks in advance public class CreateCode { public string SazBon(string MM) { string RET = ""; string[] ME = new string[25]; for (int i = 1; i < MM.Length; i += 2) { ME[i] = MM[i - 1].ToString(); } for (int j = 0; j < MM.Length; j += 2) { ME[j] = MM[j + 1].ToString(); } ME[20] = "1"; ME[21] = "OH"; ME[22] = "23"; ME[23] = "fXC"; ME[24] = "5"; ME[5] = ME[14]; ME[13] = ME[23]; ME[2] = ME[22]; ME[18] = ME[21]; ME[23] = ME[11]; ME[19] = ME[0]; foreach (string item in ME) { RET += item; } string BACK = Encrypt(RET, RET, 256); BACK = encryptString(BACK); return BACK; } string encryptString(string strToEncrypt) // md5 { UTF8Encoding ue = new UTF8Encoding(); byte[] bytes = ue.GetBytes(strToEncrypt); MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider(); byte[] hashBytes = md5.ComputeHash(bytes); // Bytes to string return System.Text.RegularExpressions.Regex.Replace (BitConverter.ToString(hashBytes), "-", "").ToLower(); } private byte[] Encrypt(byte[] clearData, byte[] Key, byte[] IV) { MemoryStream ms = new MemoryStream(); Rijndael alg = Rijndael.Create(); alg.Key = Key; alg.IV = IV; CryptoStream cs = new CryptoStream(ms, alg.CreateEncryptor(), CryptoStreamMode.Write); cs.Write(clearData, 0, clearData.Length); cs.Close(); byte[] encryptedData = ms.ToArray(); return encryptedData; } byte[] A; private string Encrypt(string Data, string Password, int Bits) { byte[] clearBytes = System.Text.Encoding.Unicode.GetBytes(Data); PasswordDeriveBytes pdb = new PasswordDeriveBytes(Password, new byte[] { 0x00, 0x01, 0x02, 0x1C, 0x1D, 0x1E, 0x03, 0x04, 0x05, 0x0F, 0x20, 0x21, 0xAD, 0xAF, 0xA4 }); if (Bits == 128) { byte[] encryptedData = Encrypt(clearBytes, pdb.GetBytes(16), pdb.GetBytes(16)); return Convert.ToBase64String(encryptedData); } else if (Bits == 192) { byte[] encryptedData = Encrypt(clearBytes, pdb.GetBytes(24), pdb.GetBytes(16)); return Convert.ToBase64String(encryptedData); } else if (Bits == 256) { byte[] encryptedData = Encrypt(clearBytes, pdb.GetBytes(32), pdb.GetBytes(16)); return Convert.ToBase64String(encryptedData); } else { return string.Concat(Bits); } } // AES }

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  • Sha or Md5 algorithm i need to encrypt and decrypt in flex

    - by praveen
    Hi I am developing my application in flex and JSP, so when I am passing values through HTTP Service Post method with request object but these values are tracing and modifying by testing team so I am planning to encrypt values in flex and decrypt it in jsp.so is there any algorithms like SHA or MD5 more secure algorithms, so please send any code or related links it is very useful to me. I am using like httpService = new HTTPService; httpService.request = new Object; httpService.request.task = "doInvite"; httpService.request.email = emailInput.text; httpService.request.firstName = firstNameInput.text; httpService.request.lastName = lastNameInput.text; httpService.send(); So is there any other way to give more secure ,please help me in this,Thanks in Advance.

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  • Iterative / Additive MD5

    - by Andrew Robinson
    I need to generate a checksum over a dictionary. Keys and Values. Is there any simple way to accomplish this in an iterative way. foreach(var item in dic.Keys) checksum += checksum(dic[item]) + checksum(item); In this case, keys and values could be converted to strings, concatinated and then a single checksum applied over these but is there a better way? Ideally MD5 but other options could work. Using this to validate data that is passed over a couple of storage methods. The checksum is then encrypted along with some other information (using AES) so I am not horribly worried about an ideal, unbreakable checksum.

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  • MD5 and Hibernate Query

    - by theJava
    public Login authenticate(Login login) { String query = "SELECT L FROM Login AS L WHERE L.email=? AND L.password=?"; Object[] parameters = { login.getEmail(), login.getPassword() }; List<Login> resultsList = (getHibernateTemplate().find(query,parameters)); if (resultsList.isEmpty()) { //error dude } else if (resultsList.size() > 1) { //throw expections } else { Login login1 = (Login) resultsList.get(0); return login1; } return null; } I have my DB tables password col set as MD5, now how to retrieve it back here.

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  • What is the best "forgot my password" method?

    - by Edward Tanguay
    I'm programming a community website. I want to build a "forgot my password" feature. Looking around at different sites, I've found they employ one of three options: send the user an email with a link to a unique, hidden URL that allows him to change his password (Gmail and Amazon) send the user an email with a new, randomly generated password (Wordpress) send the user his current password (www.teach12.com) Option #3 seems the most convenient to the user but since I save passwords as an MD5 hash, I don't see how option #3 would be available to me since MD5 is irreversible. This also seems to be insecure option since it means that the website must be saving the password in clear text somewhere, and at the least the clear-text password is being sent over insecure e-mail to the user. Or am I missing something here? So if I can't do option #1, option #2 seems to be the simplest to program since I just have to change the user's password and send it to him. Although this is somewhat insecure since you have to have a live password being communicated via insecure e-mail. However, this could also be misused by trouble-makers to pester users by typing in random e-mails and constantly changing passwords of various users. Option #1 seems to be the most secure but requires a little extra programming to deal with a hidden URL that expires etc., but it seems to be what the big sites use. What experience have you had using/programming these various options? Are there any options I've missed?

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  • convert password encryption from java to php

    - by Obay
    I'm trying to create a PHP version of an existing JSP program, however I'm stuck at the password encryption part. Could you please tell me how to convert this one? I know it tries to get the md5() but after that, I don't get it. I get lost in the Stringbuffer and for() parts. Can you help me out? public static String encryptPassword( String password ) { String encrypted = ""; try { MessageDigest digest = MessageDigest.getInstance( "MD5" ); byte[] passwordBytes = password.getBytes( ); digest.reset( ); digest.update( passwordBytes ); byte[] message = digest.digest( ); StringBuffer hexString = new StringBuffer(); for ( int i=0; i < message.length; i++) { hexString.append( Integer.toHexString( 0xFF & message[ i ] ) ); } encrypted = hexString.toString(); } catch( Exception e ) { } return encrypted; }

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  • MD5 wrong number of arguments (1 for 0) Error

    - by Salil
    Hi All, I have following error on my Server which is working properly on my local on following line . event_id = MD5.new("event-init-flash-#{Asteroid::now}").to_s #line 232 ERROR: wrong number of arguments (1 for 0) /ruby/gems/gems/shooting_star-3.2.7/bin/../lib/shooting_star/server.rb:232:in initialize' /ruby/gems/gems/shooting_star-3.2.7/bin/../lib/shooting_star/server.rb:232:in new' /ruby/gems/gems/shooting_star-3.2.7/bin/../lib/shooting_star/server.rb:232:in make_flash_connection' /ruby/gems/gems/shooting_star-3.2.7/bin/../lib/shooting_star/server.rb:70:in receive_data' /ruby/gems/gems/shooting_star-3.2.7/bin/../lib/shooting_star.rb:87:in run' /ruby/gems/gems/shooting_star-3.2.7/bin/../lib/shooting_star.rb:87:in start' /ruby/gems/gems/shooting_star-3.2.7/bin/shooting_star:61 /ruby/gems/bin/shooting_star:19:in `load' /ruby/gems/bin/shooting_star:19 POST /10 HTTP/1.1 Host: 67.222.55.30:8080 Content-length: 103 I used shooting_star to create an Chat Application. Ref:- http://github.com/genki/shooting-star Following are the REQUIREMENTS of the shooting_star Linux or xBSD OS having epoll or kqueue. Increase ulimit of nofile up to over 100,000. (edit /etc/security/limits.conf file.) prototype.js 1.5.0+ Ruby 1.8.5+ Ruby on Rails 1.2.0+ My Local Configuration are O.S Linux Ruby ruby 1.8.6 (2009-08-04 patchlevel 383) [i386-linux] Rails 2.3.4 shooting_star 3.2.7 prototype.js 1.6.0.3 My Server Configuration are O.S Linux Ruby ruby 1.8.6 (2009-08-04 patchlevel 383) [x86_64-linux] Rails 2.3.4 shooting_star 3.2.7 prototype.js 1.6.0.3 I just want to know what is the problem why it's not working on server if everything is fine in local. Regards, Salil Gaikwad

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  • md5sum of large files gives different results sometimes

    - by Emanuele
    I have an AMD quad core, 8 gb RAM, 1 SSD EXT2 (2 months old), 2 HDD EXT4, approximately 1 year old. I'm using Ubuntu 10.04 x86-64 and when I compute the md5sum of large files (9 GB) sometimes I get different values than the one stored on a reference file. Upon restarting and switching off the PC then I get the expected results no matter how many times I repeat it. But this is random. I've turn on ECC (the fastest possible settings) and the issue seems to be rarer, but I've run memtest86+ for 6+ hours without a glitch (and with ECC off!). Any idea? Should I update the BIOS of my motherboard (Asus EVO-something...don't remember it now)? I've tried all the rest apart this, but genuinely don't know what to do anymore... Any suggestion is appreciated!

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  • using php to create a joomla user password?

    - by SoulieBaby
    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 looking for a php code of sorts to create that same encryption. Cheers

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  • Distributions and hashes

    - by Don Mackenzie
    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 publishers seem to discount the threat.

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  • unique hash of string

    - by Aly
    Hi, I want to create a unique hash (16 chars long) of an arbitrary length String. Is there a good library that implements MD5 or SHA-1 for C++ with which I can achieve this? (and possibly an example of how to use it)

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