passwords

问题 It need not be meaningful words - more like random password generation, but the catch is - they should be unique. I will be using this for some kind of package / product code. Which is the best method available? :) 回答1: It is generally not possible to generate sequences with both unique and random elements: obviously to be unique the algorithm has to take into account the previously generated elements in the sequence, so the next ones will not really be random. Therefore your best bet would

问题 I create a simple project: https://github.com/edzio27/textFieldExample.git where I add two UITextField s, one with login and second one with secure password. I've noticed there strange behaviour: click on login and add some text, click on password and add some text, click again to login UITextField Notice that there is a strange behaviour in password font size. It is only appears in iOS7. What can be the problem? Thanks. 回答1: As a couple people pointed out, it appears secure text fields don't

问题 Possible field types: BINARY(16) CHAR(32) BIGINT + BIGINT How do I decide which one to use? 回答1: If the column is indexed and you know what you're doing, BINARY(16) for performance reasons. Otherwise, CHAR(32) is fine. Make sure the column uses the ascii charset though. ( ascii_bin for example) 来源： https://stackoverflow.com/questions/2326584/best-practices-for-efficiently-storing-md5-hashes-in-mysql

问题 We have a number of Red Hat linux servers in our IT environment. I am being asked by my team members to write a script (preferably shell script) to change a user's password on each one of those in a single go, using SSH. I have tried to find a solution but many of the scripts I found are using Expect. We do not have Expect installed on our servers and the system admins have refused to let us install it. Also, the users do not have root access so passwd --stdin or chpasswd cannot be used. Is

问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 12 months ago . Some applications (or websites) compute a password's complexity as you type. They typically display a red bar which turns orange, then green, then even greener as your password gets longer, and contains more classes of characters (e.g., lowercase, uppercase, punctuation,

问题 Does anyone know the syntax for this? I've been looking everywhere and all I can find is C++ code for this. I'm trying to password protect an excel file programatically using the System.IO.Packaging namespace. Any ideas? Additional notes: I'm NOT using the Excel interop--but instead the System.IO.Packaging namespace to encrypt and password protect the excel file. 回答1: If you want an Excel password all you need is something like this: using Microsoft.Office.Interop.Excel //create your

问题 I looking for a way, specifically in PHP that I will be guaranteed to always get a unique key. I have done the following: strtolower(substr(crypt(time()), 0, 7)); But I have found that once in a while I end up with a duplicate key (rarely, but often enough). I have also thought of doing: strtolower(substr(crypt(uniqid(rand(), true)), 0, 7)); But according to the PHP website, uniqid() could, if uniqid() is called twice in the same microsecond, it could generate the same key. I'm thinking that

问题 I am using php 5.4 with this backwards compatibility script: https://github.com/ircmaxell/password_compat/blob/master/lib/password.php that shouldn't matter though, because I can get the hashing and verification process working in my registration function: $hash = password_hash($pass, PASSWORD_DEFAULT); echo $pass; echo $hash; if( password_verify($pass,$hash) ) echo 'success'; else echo 'failure'; //success is always shown //EXAMPLE INPUT $pass = 'password'; //EXAMPLE OUTPUT password$2y$10

问题 Hi im having a problem with my change password script. im trying to allow a user to change their password in the mysql table 'ptb_users.password' it's suppose to store this as md5. When i hit submit in my form, i'm assuming it goes to changepassword.php but the page is just blank, nothing is echoed and im not getting any errors. Can someone please show me where im going wrong with this, thanks Here's my form: <?php // CONNECT TO THE DATABASE require('includes/_config/connection.php'); // LOAD

问题 Need a Regular Expression for Passwords which must have an : 8 characters minimum Must include at least two of the following lowercase letters uppercase letters numbers and symbols Character limit of 50 回答1: You can use the regex as below: ^(?=.{8,50}$)(?=(.*?[a-z].*?[A-Z])|(.*?[a-z].*?[0-9])|(.*?[a-z].*?[!@#$%^&*()_+])|(.*?[A-Z].*?[0-9])|(.*?[A-Z].*?[!@#$%^&*()_+])|(.*?[0-9].*?[!@#$%^&*()_+])).*$ Debuggex Demo What I tried is combination of : Lowercase - Uppercase (.*?[a-z].*?[A-Z]) // Valid