md5

We are storing hashed passwords in a database table. We prepend each password with a random salt value and hash using MD5CryptoServiceProvider. Is this safe? I have heard MD5 was "broken". If not, can you recommend an alternate hash method to use (specific .NET framework class)? I think SHA256, SHA512 are more safe at this moment :) See wiki The security of a hash function mainly comes from the length of its output (message digest): a longer digest gives greater collision resistance. The birthday paradox tells us that on average you'd expect to find a collision from a work function of the

This question already has an answer here: Secure hash and salt for PHP passwords 14 answers $pass="test" the above variable contains a password called test.I want to hash this password using sha512 md5 and salt how do i do that as ive found only benifits of salt and sha512,i allready know md5 encryption.please i need the solution as my system is vunerable and please explain it with a code example because im still attached to md5 from what ive understood by your comments and answers ive got the following code $pass="test"; $hashed_pass= openssl_digest($pass, 'sha512'); ok seems solid enough but

I need to create a signature string for a variable in Ruby, where the variable can be a number, a string, a hash, or an array. The hash values and array elements can also be any of these types. This string will be used to compare the values in a database (Mongo, in this case). My first thought was to create an MD5 hash of a JSON encoded value, like so: (body is the variable referred to above) def createsig(body) Digest::MD5.hexdigest(JSON.generate(body)) end This nearly works, but JSON.generate does not encode the keys of a hash in the same order each time, so createsig({:a=>'a',:b=>'b'}) does

This question already has answers here : PHP expresses two different strings to be the same [duplicate] (6 answers) var_dump(md5('240610708') == md5('QNKCDZO')); Output: bool(true) Example: http://3v4l.org/2vrMi xdazz md5('240610708') 's result is 0e462097431906509019562988736854 . md5('QNKCDZO') 's result is 0e830400451993494058024219903391 . They are both float number format strings ( numerical strings ), and if you use == in php, when compare a number with a string or the comparison involves numerical strings, then each string is converted to a number and the comparison performed

I have a jquery dialog modal box pop up for logging into my website. When a user clicks login it does a post request to a login.php file as follows: $.post( 'includes/login.php', { user: username, pass: password }, onLogin, 'json' ); How do I do an md5 on that password before putting it in the post request? Also, I have the user's passwords stored in a MySQL database using MD5(), so I would like to just compare the stored version of the password with the MD5 of the password submitted. Thanks to anyone that replies. James Skidmore crypto-js is a rich javascript library containing many

I'm working on a program that searches entire drives for a given file. At the moment, I calculate an MD5 hash for the known file and then scan all files recursively, looking for a match. The only problem is that MD5 is painfully slow on large files. Is there a faster alternative that I can use while retaining a very small probablity of false positives? All code is in C#. Thank you. Update I've read that even MD5 can be pretty quick and that disk I/O should be the limiting factor. That leads me to believe that my code might not be optimal. Are there any problems with this approach? MD5 md5 =

Why can't you just reverse the algorithm like you could reverse a math function? How is it possible to make an algorithm that isn't reversible? And if you use a rainbow table, what makes using a salt impossible to crack it? If you are making a rainbow table with brute force to generate it, then it invents each plaintext value possible (to a length), which would end up including the salt for each possible password and each possible salt (the salt and password/text would just come together as a single piece of text). Jeremy Salwen MD5 is designed to be cryptographically irreversible . In this

I want python to read to the EOF so I can get an appropriate hash, whether it is sha1 or md5. Please help. Here is what I have so far: import hashlib inputFile = raw_input("Enter the name of the file:") openedFile = open(inputFile) readFile = openedFile.read() md5Hash = hashlib.md5(readFile) md5Hashed = md5Hash.hexdigest() sha1Hash = hashlib.sha1(readFile) sha1Hashed = sha1Hash.hexdigest() print "File Name: %s" % inputFile print "MD5: %r" % md5Hashed print "SHA1: %r" % sha1Hashed Randall Hunt TL;DR use buffers to not use tons of memory. We get to the crux of your problem, I believe, when we

I have written a simple Java class to generate the hash values of the Windows Calculator file. I am using Windows 7 Professional with SP1 . I have tried Java 6.0.29 and Java 7.0.03 . Can someone tell me why I am getting different hash values from Java versus (many!) external utilities and/or websites? Everything external matches with each other, only Java is returning different results. import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.util.LinkedHashMap; import java.util.Map; import java.util.Map.Entry; import