passwords | 易学教程

Maximum MySQL user password length

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问题 What is the maximum length for a MySQL user password? MySQL uses PASSWORD(str) to encrypt the cleartext password str . This hashed password string is stored in the mysql.user grant table with a CHAR(41) datatype. However, I was not able to find what is the maximum length for the cleartext password str , if there is one. Can anyone help? 回答1: This is the reference pages I found when I googled : Link1 and Link2 If you are using MySQL Replication, be aware that, currently, a password used by a

How to Recover or Reset SSIS Package Password?

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I have a few SSIS packages that were password-protected (their protection level is apparently EncryptAllWithPassword) by a developer who left the company and can't be reached anymore, and trying to open them gives the following error since the password can't be supplied: Error loading 'Package.dtsx' : Failed to remove package protection with error 0xC0014037 "The package is encrypted with a password. The password was not specified, or is not correct.". This occurs in the CPackage::LoadFromXML method. Is there any any way to open these packages? I have access to the administrator account

Am I supposed to store hashes for passwords?

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User System and Passwords: I was looking through MD5 stuff, and I am wondering what is the normal/good practice for passwords. Right now, I think people super encrypt the passwords and store the hashes. If so, how does password checking work? I just have the input password go through the encryption process again and then check the hash with the stored one, correct? This question may contradict the above, but should my salt ever be a randomly generated value? If so, when may it be useful? Edit: Other than passwords, in a user system, what else should be encrypted as a good practice? Do they

Authentication in shiny app and multiple pages

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问题 In the system that I am developing I have 3 different actors (user, admin, support team) using Shiny App. I want to know how I can give authentication to these three actors that each of these actor only access to their page. I found that It can be possible with shiny server Pro which is not free. Is there any way to do it instead of using shiny server pro. In the UI.R the code are as following: library(shiny) library(shinydashboard) rm(list = ls()) Logged = FALSE; my_username <- "test" my

RAR passwords, why don't rainbow tables work? [closed]

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问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 24 days ago . I've been looking around for encryption and I've seen several implementations of Rainbow Tables work like charm on passwords (say windows). I'm yet to see an implementation of a Rainbow attack on a RAR file. Why is it so. What makes RAR encryption more secure and immune to these sorts of attacks? 回答1: A rainbow

How display text in password field

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问题 I have the password field on page. I want to display text "Enter password" on screen before entering password but on focus when user enter password it should go back to password type EDIT: I am using Jquery as well so any small jquery solution will do 回答1: [Latest revisision to include IE support] Update for IE9: Version 9 of IE allows the change of the type attribute for input elements of type text/password back and forth As mentioned in the comments (and verified) the previous examples did

Recover admin password and email Odoo server

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Months ago, I installed an Odoo server and it worked perfectly ! Problem is that I forgot the identification (email/pass) for the admin, wich is real bad. After uninstalling the server and reinstalling it I found out that the database was not wiped. So it didn't change at all ! Please, can anyone help me finding the admin's email and password ? I'm not very familiar with progresql but res_users displays empty passwords: You may change admin password using progresql from the terminal. You just need to do like these odoo@odedra:~$ psql testing_db psql (9.1.14) Type "help" for help. testing_db=#

How can password_verify validate passwords without knowing salt and cost?

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The function password_verify() in the new PHP password API checks if the password corresponds to the hash. The hash is generated by password_hash() , that by default uses a random salt and a cost = 10 . I always thought (although I never studied it) that you have to store the salt inside the database and then when you want to verify the password, hash it with the given salt using the same cost. How can password_verify() check the password without knowing salt and cost? The string returned by password_hash() contains not only the hash, but also the algorithm, cost and salt. 来源： https:/

Incorporating Devise Authentication into an already existing user structure?

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问题 I have a fully functional authentication system with a user table that has over fifty columns. It's simple but it does hash encryption with salt, uses email instead of usernames, and has two separate kinds of users with an admin as well. I'm looking to incorporate Devise authentication into my application to beef up the extra parts like email validation, forgetting passwords, remember me tokens, etc... I just wanted to see if anyone has any advice or problems they've encountered when

How can I encrypt or hide passwords in a Perl script?

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I am working on Perl script that uses Expect to login via telnet to remote machines (don't ask, gotta use telnet). I also do perforce p4 login operations as necessary and use expect to pipe in the correct passwords. For now I just read passwords from clear text environment variable, i.e. export PASSWORD=password , which I know is no good security wise. What's the best way to store passwords for scripts like these that need a lot of passwords for multiple systems? Encrypted in a text file somehow? Or something else? Keep in mind I can't easily change the existing systems, like for example I can