md5

问题 What method would you call safest and most secure? I took these snippets off php.net. I'm just wondering because people posted their own and I just couldn't catch on to understand why some are the way they are... Can someone help me out and tell me a little more about these? Which would be the most secure and why? 1. <?php $hash = md5($salt1.$password.$salt2); ?> 2. <?php function eliteEncrypt($string) { // Create a salt $salt = md5($string."%*4!#$;\.k~'(_@"); // Hash the string $string = md5

问题 I am writing a console application which iterates through a binary tree and searches for new or changed files based on their md5 checksums. The whole process is acceptable fast (14sec for ~70.000 files) but generating the checksums takes about 5min which is quite too slow... Any suggestions for improving this process? My hash function is the following: private string getMD5(string filename) { using (var md5 = new MD5CryptoServiceProvider()) { if (File.Exists(@filename)) { try { var buffer =

问题 here is my c# compute signature code using System; using System.Text; public class Test { public static void Main() { string str; string syskey = "123456789"; str = GenSignature(syskey,"foo","20170426001757"); Console.WriteLine(str); } public static string GenSignature(string syskey,params string[] paramValues) { string source = ""; for (int i = 0; i < paramValues.Length; i++) { if (!string.IsNullOrEmpty(paramValues[i])) { source += (string.IsNullOrEmpty(source) ? "" : "&") + paramValues[i];

问题 Ok so i'm trying to create a script that does the following: Searches a directory for known hashes. Here is my first script: Hash.py import hashlib from functools import partial #call another python script execfile("knownHashes.py") def md5sum(filename): with open(filename, mode='rb') as f: d = hashlib.md5() for buf in iter(partial(f.read, 128), b''): d.update(buf) return d.hexdigest() print "Hash of is: " print(md5sum('photo.jpg')) if md5List == md5sum: print "Match" knownHashes.py print (

问题 I've read a couple times that MD5 is not an encryption, e.g. on MD5 ... Encryption? or Command Line Message Digest Utility. Well, I get that it's a hash/message digest, and the explanation in the links above says an encryption has to have a key, while hash/md is a cryptographic hash function that produces just a signature. I don't really understand the difference. Couldn't you see the cryptographic hash function / algorithm as a key? Also, what is the difference between something that's

问题 I am suppose to create a checksum with MD5 Hash generator, and i am using the image "Image to create checksum" I have downloaded an image on both iOS and Andriod device and created MD5 hash as follows: For Andriod Device: Checksum : 09955F4875C8798FFEAF5EFD95FB3AA7 Image : For IOS Device: Checksum : 8C18C548188D68C086691BAC7C68DC35 Image : I have even cross checked creating checksum by downloading image on system as well which also gives "09955F4875C8798FFEAF5EFD95FB3AA7" which is matching

问题 I've got the following code, which hashes a password as inputted by the user, and subsequently stores it in an SQL Server database: Byte[] originalPassword; Byte[] hashedPassword; MD5CryptoServiceProvider md5Hasher = new MD5CryptoServiceProvider(); UTF8Encoding encoder = new UTF8Encoding(); originalPassword = encoder.GetBytes(passwordBox.Text); hashedPassword = md5Hasher.ComputeHash(originalPassword); command.Parameters.Add(new SqlParameter("Password", hashedPassword)); command

问题 The following function gets file offsets from the rabin_polynomial structure, opens the input_file for md5 fingerprint generation and writes the result to fpfile My problem is it seems to use the same chunk_buffer content some times that it generates similar fingerprints for chunks with different legths. What could be the reason? I have tested the md5 function with other inputs separately and it generates correct digests. int write_rabin_fingerprints_to_binary_file(FILE *fpfile,FILE *input

问题 I've created a login + register site. The register page works fine, login too except that when I have to write in my password I have to write in the encrypted version, the md5... I've done in register page so that their password gets encrypted. How can I make in login page so that they dont need to write their md5 password, just their normal one? The register.php looks like: <? $reg = @$_POST['reg']; //declaring variables to prevent errors $fn = ""; //First Name $ln = ""; //Last Name $un = ""

问题 I am migrating from Joomla 1.5 to WordPress and my client does not want users to have to re-register. So I am writing a WordPress plugin to match a user's password with what's in the jos_users table and then update their info in WordPress accordingly. Everything I have read so far for Joomla's password authentication points me to the getCryptedPassword function: http://docs.joomla.org/API15:JUserHelper/getCryptedPassword My plugin is encrypting what the user enters the same way: $db_password