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  • What's the safest online password system?

    - by Darian Miller
    It's so difficult to track dozens of passwords in different locations. Syncing fails from time to time and you end up with collision correction avoidance syndrome. Is there a single source of safe, online, commercial password storage anywhere? One that will be around for years to come and one that is truly safe enough to ensure protection?

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  • Remove a users password using "net" command

    - by markus.bruckner
    Hello, is it possible to remove a user's password using the net command? I tried "net user *" and just hitting return twice, but this does not work as expected. Is there any other way to do this? (I'd gladly take non-net commands, as long as they are built-in in XP SP3) Best regards, MB

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  • Does home directory encryption depend on gnome keyring?

    - by pedorro
    My gnome-keyring has somehow gotten messed up. It prompts for a password (that I know I never provided - yes I chose 'unsafe storage'). None of the possible passwords that I use (including empty) are working. So basically I want to delete the default key so I can start over. I just want to confirm that this isn't somehow tied to my home directory encryption. I want to be sure that if I delete the default key from it, I will still be able to log in normally and decrypt my home directory. It seems likely that they're unrelated as the keyring is within the home directory and is thus itself encrypted, but I just thought I'd ask. Anyone have any thoughts?

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  • Bad performance with Linux software RAID5 and LUKS encryption

    - by Philipp Wendler
    I have set up a Linux software RAID5 on three hard drives and want to encrypt it with cryptsetup/LUKS. My tests showed that the encryption leads to a massive performance decrease that I cannot explain. The RAID5 is able to write 187 MB/s [1] without encryption. With encryption on top of it, write speed is down to about 40 MB/s. The RAID has a chunk size of 512K and a write intent bitmap. I used -c aes-xts-plain -s 512 --align-payload=2048 as the parameters for cryptsetup luksFormat, so the payload should be aligned to 2048 blocks of 512 bytes (i.e., 1MB). cryptsetup luksDump shows a payload offset of 4096. So I think the alignment is correct and fits to the RAID chunk size. The CPU is not the bottleneck, as it has hardware support for AES (aesni_intel). If I write on another drive (an SSD with LVM) that is also encrypted, I do have a write speed of 150 MB/s. top shows that the CPU usage is indeed very low, only the RAID5 xor takes 14%. I also tried putting a filesystem (ext4) directly on the unencrypted RAID so see if the layering is problem. The filesystem decreases the performance a little bit as expected, but by far not that much (write speed varying, but 100 MB/s). Summary: Disks + RAID5: good Disks + RAID5 + ext4: good Disks + RAID5 + encryption: bad SSD + encryption + LVM + ext4: good The read performance is not affected by the encryption, it is 207 MB/s without and 205 MB/s with encryption (also showing that CPU power is not the problem). What can I do to improve the write performance of the encrypted RAID? [1] All speed measurements were done with several runs of dd if=/dev/zero of=DEV bs=100M count=100 (i.e., writing 10G in blocks of 100M). Edit: If this helps: I'm using Ubuntu 11.04 64bit with Linux 2.6.38. Edit2: The performance stays approximately the same if I pass a block size of 4KB, 1MB or 10MB to dd.

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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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  • The Frustrations of Resetting Your Password Online [Video]

    - by Asian Angel
    We have all been there…finding ourselves needing to reset a password and suffering through the process of creating a password that the online service will accept. You will certainly feel some sympathy watching this young woman reset the password for her favorite web service before she can log in and have fun. Note: Video contains some language that may be considered inappropriate. Have you had similar bad or extremely frustrating experiences while resetting a password? Let us know in the comments! Reset Your Password [via MakeUseOf] HTG Explains: What Is RSS and How Can I Benefit From Using It? HTG Explains: Why You Only Have to Wipe a Disk Once to Erase It HTG Explains: Learn How Websites Are Tracking You Online

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  • Resetting Your Oracle User Password with SQL Developer

    - by thatjeffsmith
    There’s nothing more annoying than having to email, call, or log a support ticket to have one of your accounts reset. This is no less annoying in the Oracle database. Those pesky security folks have determined that your password should only be valid for X days, and your time is up. Time to reset the password! Except…you can’t log into the database to reset your password. What now? Wait a second, look at this nifty thing I see in SQL Developer: Right click on my connection, reset password not available! Why not? The JDBC Driver Doesn’t Support This Operation We can’t make this call over the Oracle JDBC layer, because it hasn’t been implemented. However our primary interface, OCI, does indeed support this. In order to use the Oracle Call Interface (OCI), you need to have an Oracle Client on your machine. The good news is that this is fairly easy to get going. The Instant Client will do. You have two options, the full or ‘Lite’ Instant Clients. If you want SQL*Plus and the other client tools, go for the full. If you just want the basic drivers, go for the Lite. Either of these is fine, but mind the bit level and version of Oracle! Make sure you get a 32 bit Instant Client if you run 32 bit SQL Developer or 64 bit if you run 64 Here’s the download link What, you didn’t believe me? Mind the version of Oracle too! You want to be at the same level or higher of the database you’re working with. You can use a 11.2.0.3 client with 11.2.0.1 database but not a 10gR2 client with 11gR2 database. Clear as mud? Download and Extract Put it where you want – Program Files is as good as place as any if you have the rights. When you’re done, copy that directory path you extracted the archive to, because we’re going to add it to your Windows PATH environment variable. The easiest way to find this in Windows 7 is to open the Start dialog and type ‘path’. In Windows 8 you’ll cast your spell and wave at your screen until something happens. I recommend you put it up front so we find our DLLs first. Now with that set, let’s start up SQL Developer. Check the Connection Context menu again Bingo! What happened there? SQL Developer looks to see if it can find the OCI resources. Guess where it looks? That’s right, the PATH. If it finds what it’s looking for, and confirms the bit level is right, it will activate the Reset Password option. We have a Preference to ‘force’ an OCI/THICK connection that gives you a few other edge case features, but you do not need to enable this to activate the Reset Password. Not necessary, but won’t hurt anything either. There are a few actual benefits to using OCI powered connections, but that’s beyond the scope of today’s blog post…to be continued. Ok, so we’re ready to go. Now, where was I again? Oh yeah, my password has expired… Right click on your connection and now choose ‘Reset Password’ You’ll need to know your existing password and select a new one that meets your databases’s security standards. I Need Another Option, This Ain’t Working! If you have another account in the database, you can use the DBA Panel to reset a user’s password, or of course you can spark up a SQL*Plus session and issue the ALTER USER JEFF IDENTIFIED BY _________; command – but you knew this already, yes? I need more help ‘installing’ the Instant Client, help! There are lots and lots of resources out there on this subject. But I also know from personal experience that many of you have problems getting this to ‘work.’ The key things to remember is to download the right bit level AND make sure the client install directory is in your path. I know many folks that will just ‘install’ the Instant Client directly to one of their ‘bin’ type directories. You can do that if you want, but I prefer the cleaner method. Of course if you lack admin privs to change the PATH variable, that might be your only option. Or you could do what the original ORA- message indicated and ‘contact your DBA.’

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  • How to enable password challenge in Active Directory?

    - by Antonio Laguna
    As IT Support, my team is taking so much time reseting passwords. So, we thought it would be interesting to enable some sort of Password Challenge in Active Directory so users could reset their own passwords, after correctly answering some questions. Despite we alert users by mail when their passwords are going to expire, they just delete the mail and go on so we think it should be a great idea. I've seen some commercial products but I'm not sure if there is something built-in or GPL to enable this kind of feature. Could someone shed some light about it?

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  • Website hacked, cpanel password not encrypted?

    - by Jeg Bagus
    Yesterday I found out that all the websites that are hosted on my webhosting site were hacked. I tried to change my password, and unbelievably, I COULD SEE my password there. This means my password is able to be decrypted. I asked customer support, and they say, its normal, CPanel saves the password like that. Is it true? I mean, cpanel password able to be decrypted? They blame me because my wordpress version is out of date. But 2 of my website are on different platforms. One made by CI and one by Wordpress, and all are hacked. Is this hosting reliable?

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  • how to read the password from variable?

    - by Viswa
    I am trying to move my file to another system which is located in some other place, with this command: rsync -avrz src destination It works fine. But what I need is to put this command in shell script and run it like: #! /bin/sh rsync -avrz srcfilelocation destination When it runs, it asks for the destination system password. I know that password and give it manually. Now I have decided to assign the password to an environment variable, like pswd="destination system password". I need my shell script to read the password from this variable. How can I write a script to do this?

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  • Creating encrypted database for work

    - by Baldur
    My boss posed this problem to me: Encrypted: We need an encrypted database for miscellanious passwords we use at work that are currently only in people's head. Easily accessable: Someone needs to be able to quickly access specific passwords, possibly at hectic moments. This requires any sort of public key management (keeping it on a USB key in a sealed envelope?) to be relatively easy. Access control: The system should have groups of passwords where only specific people have access to specific groups. Recoverability: We need to make sure passwords from one group aren't lost even if the only users with direct access quit or pass away—hence we need some way where (for example) any two members of senior management may override the system (see the treshold link below) and retrieve all the passwords with their key. The first thing that jumped into my mind was some form of threshold and asymmetric cryptography but I don't want to reinvent the wheel, are there any solutions for this? Any software should preferrably be free and open-source.

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  • What is a "good" tool to password-protect .pdf files?

    - by Marius Hofert
    What is a "good" tool to encrypt (password protect) .pdf files? (without being required to buy additional software; the protection can be created under linux but the password query should work on Windows, too) I know that zip can do it: zip zipfile_name_without_ending -e files_to_encrypt.foo What I don't like about this is that for a single file, you have to use Winzip to open the zip and then click the file again. I rather would like to be prompted for a password when opening the .pdf (single file case). I know that pdftk can do this: pdftk foo.pdf output foo_protected.pdf user_pw mypassword. The problem here is that the password is displayed in the terminal -- even if you use ... user_pw PROMPT. But in the end you get a password-protected .pdf and you are prompted for the password when opening the file.

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  • What is the sudo password after I deleted the password for the user?

    - by Ubuntunewbie
    To have an easier access to the computer I deleted the user's password so it is blank. But now I'm still asked to type in a password for sudo actions such as installing programms, etc. I know that this belongs to Ubuntu's outrageous security policy (which is why I use Ubuntu in the first place..) but I don't have any password to enter any more!! The old user password is not accepted and anything else (like just hitting enter) doesn't work either. I already tried the recovery mode (root shell) way passwd USER< but it replied that it can't access the password or it has no authority. Thanks in advance for your help!

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  • Linux (redhat) how to change password to previous password

    - by ring bearer
    Is there a way to change password to value same as the previous password? I know this is a security flaw, but would like to know however. when I try this: [mrbean@wwwserver ~]$ passwd Changing password for user mrbean. Changing password for mrbean (current) UNIX password: New UNIX password: -- here i typed same password BAD PASSWORD: is too similar to the old one.

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  • Changing encryption settings for Microsoft Office 2010/2013

    - by iridescent
    Although there are Office 2013 settings to change how encryption is performed, when you encrypt Open XML Format files (.docx, .xslx, .pptx, and so on) the default values — AES (Advanced Encryption Standard), 128-bit key length, SHA1, and CBC (cipher block chaining) — provide strong encryption and should be fine for most organizations. Quoted from http://technet.microsoft.com/en-us/library/cc179125.aspx . I can't figure out where is the setting to change how encryption is performed. Is there any possible to change the encryption algorithm being used instead of the default AES-128 ? Thanks.

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  • help me with xor encryption in c#

    - by x86shadow
    I wrote this code in c# to encrypt a text with a key : using System; using System.Linq; using System.Collections.Generic; using System.Text; namespace ENCRYPT { class XORENC { private static int Bin2Dec(string num) { int _num = 0; for (int i = 0; i < num.Length; i++) { _num += (int)Math.Pow(2, num.Length - i - 1) * int.Parse(num[i].ToString()); } return _num; } private static string Dec2Bin(int num) { if (num < 2) return num.ToString(); return Dec2Bin(num / 2) + (num % 2).ToString(); } public static string StrXor(string str, string key) { string _str = ""; string _key = ""; string _dec = ""; string _temp = ""; for (int i = 0; i < str.Length; i++) { _temp = Dec2Bin(str[i]); for (int j = 0; j < 8 - _temp.Length + 1; j++) { _temp = '0' + _temp; } _str += _temp; } for (int i = 0; i < key.Length; i++) { _temp = Dec2Bin(key[i]); for (int j = 0; j < 8 - _temp.Length + 1; j++) { _temp = '0' + _temp; } _key += _temp; } while (_key.Length < _str.Length) { _key += _key; } if (_key.Length > _str.Length) _key = _key.Substring(0, _str.Length); for (int i = 0; i < _str.Length; i++) { if (_str[i] == _key[i]) { _dec += '0'; } else { _dec += '1'; } } _str = ""; for (int i = 0; i < _dec.Length; i = i + 8) { char _chr = (char)0; _chr = (char)Bin2Dec(_dec.Substring(i, 8)); _str += _chr; } return _str; } } } the problem is that I always get error when I want to decrypt an encryted text with this code. see the example below for more info : string enc_text = ENCRYPT.XORENC("abc","a"); //enc_text = " ??" string dec_text = ENCRYPT.XORENC(enc_text,"a"); //ERROR any one can help ?

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  • The best way to hide data Encryption,Connection,Hardware

    - by Tico Raaphorst
    So to say, if i have a VPS which i own now, and i wanted to make the most secure and stable system that i can make. How would i do that? Just to try: I installed debian 7 with LVM Encryption via installation: You get the 2 partitions a /boot and a encrypted partition. When booting you will be prompted to fill in the password to unlock the encryption of the encrypted partition, Which then will have more partitions like /home /usr and swapspace which will automatically mount. Now, i do need to fill in the password over a VNC-SSL connection via the control panel website of the VPS hoster, so they can see my disk encryption password if they wanted to, they have the option if they wanted to look at what i have as data right? Data encryption on VPS , Is it possible to have a 100% secure virtual private server? So lets say i have my server and it is sitting well locked next to me, with the following examples covered bios (you have to replace bios) raid (you have to unlock raid-config) disk (you have to unlock disk encryption) filelike-zip-tar (files are stored in encrypted archives) which are in some other crypted file mounted as partition (archives mounted as partitions) all on the same system So it will be slow but it would be extremely difficult to crack the encryption. So to say if you stole the server. Then i only need to make the connection like ssh safer with single use passwords, block all incoming and outgoing connections but give one "exception" for myself. And maybe one for if i somehow lose my identity for the "exeption" What other overkill but realistic security options are available, i have heard about SElinux?

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  • Password Cracking Windows Accounts

    - by Kevin
    At work we have laptops with encrypted harddrives. Most developers here (on occasion I have been guilty of it too) leave their laptops in hibernate mode when they take them home at night. Obviously, Windows (i.e. there is a program running in the background which does it for windows) must have a method to unencrypt the data on the drive, or it wouldn't be able to access it. That being said, I always thought that leaving a windows machine on in hibernate mode in a non-secure place (not at work on a lock) is a security threat, because someone could take the machine, leave it running, hack the windows accounts and use it to encrypt the data and steal the information. When I got to thinking about how I would go about breaking into the windows system without restarting it, I couldn't figure out if it was possible. I know it is possible to write a program to crack windows passwords once you have access to the appropriate file(s). But is it possible to execute a program from a locked Windows system that would do this? I don't know of a way to do it, but I am not a Windows expert. If so, is there a way to prevent it? I don't want to expose security vulnerabilities about how to do it, so I would ask that someone wouldn't post the necessary steps in details, but if someone could say something like "Yes, it's possible the USB drive allows arbitrary execution," that would be great! EDIT: The idea being with the encryption is that you can't reboot the system, because once you do, the disk encryption on the system requires a login before being able to start windows. With the machine being in hibernate, the system owner has already bypassed the encryption for the attacker, leaving windows as the only line of defense to protect the data.

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  • XKCD’s Take On Password Difficult

    - by Jason Fitzpatrick
    The more difficult to crack password doesn’t have to be the most difficult to remember; XKCD humorously illustrates the power of entropy. On a more serious note, if you’re looking to increase your password strength and variety, make sure to check out our roundup of password best practices. [via XKCD] HTG Explains: What Is RSS and How Can I Benefit From Using It? HTG Explains: Why You Only Have to Wipe a Disk Once to Erase It HTG Explains: Learn How Websites Are Tracking You Online

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  • What is default password?

    - by Benjamin
    What is the difference between default and login? And what does Default Keyring mean? When I run some applications(Emphaty etc), Unlock Keyring window launched first, then it requires me password. Why? This is a screen-shot when I run Emphaty. Why does it require me a password? It's a just messenger. It makes me crazy. I was able to find this Window. I guess this Windows could give me a solution. Before trying something to fix it, I'd like know about what they are. Please explain them to me. P.S My login password is not equal to default password now.

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  • Disabling Password and Key Login

    - by Matthew Miller
    I want to disable the login prompt to access the Passwords and Keys. Right clicking the prompt does not bring up a change password dialogue. Under Applications System Tools Preferences there is "Passwords and Keys" but right clicking that does not allow me to change the password either. There is no Password and Keys selection under Accessories. I used to be able to change the password to a blank character, which allowed it to automatically login, but there doesn't seem to be an option for that now. Using Gnome 3 in 12.10 Thank you

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  • How do I reset my Ubuntu 12.10 password?

    - by Salvador Yniguez
    So my sister gave me this old laptop that has Ubuntu 12.10. The problem is that she has a username administrator password, but she forgot it. I've tried using GRUB and launching recovery mode and using the root shell prompt. And I type the "passwd username" command, and it tells me to type the new UNIX password, but when I try to type a new password it's like my keyboard doesn't even work. It types nothing. What's the problem? Why does my keyboard not type anything when I try to reset the UNIX password? It always works perfectly fine. I'm grateful for any help, thank you.

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  • SSH password entered too many times Connection refused

    - by Ole Henrik Skogstrøm
    I tried connecting to my new installed Ubuntu 12 server via SSH and I was asked for my password. (I had used "myusername@ipadress" to connect) After entering the right password a few times (with no luck; access denied) I started getting an error directly telling me that the connection was refused without asking me for a password anymore. It seems like I have managed to blacklist myself. It has been like this for about 2 hours now, is there a quick solution for this?

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