Similar Questions

• Encrypt/decrypt a file even with two different passwords

  Hello world:
  
  I am quite new to Java and cryptography in general and have a theoretical question. The following scenario is possible and how it would be:
  Two users with two passwords (say a regular user and a superuser) encrypt, decrypt, read and write to the same file. Secret key for encryption and decryption must be based on their passwords (generated from their passwords), and not not stored anywhere on the system.
  
  I've been racking me my brains, but can't think of a way. Am I missing an obvious solution?
  
  Can it be done?
  
  Thank you
  Michael

  I don't think that you can avoid having more than a hash of password stored on the system. Using a combination of my approach and Jeff I can implement this as long as you leave a password protected key store must be stored on each system. Key store a given user would contain its RSA private key and the public key associated with certificate RSA for the admin user (thought the admin user's public key could be stored in the program since it does not have to be kept secret). The admin user key store will contain only its RSA private and public keys.

  Suppose that the data file must be create a nonadministrator user standard. The code performs the following actions-

  (1) to generate a key random symmetric algorithm. Tell a 128-bit AES key.
  (2) write a condensed version of the present in the output file.
  (3) he wrote the random key encrypted with her public key to the file.
  (4) he wrote his public key (or certificate) in the file.
  (5) that he wrote the random key that is encrypted with the public key of user admin to the file.
  (6) he encrypts data using keys written random the result in the file.

  This user can then update the file of

  (1) read the file the fingerprint of the random key.
  (2) reading of the random key encrypted with her public key.
  (3) decrypt this random key encrypted using its key private, extracted from its keystore.
  (4) check the fingerprint of this key to make sure it has the correct random key.
  (5) jump his certificate and random key encrypted with the public key for the admin user.
  (5) related to the decryption of data using the random key.
  (6) update of the data.
  (7) re - encrypt file, as described in the first part with a random key.

  The admin user can

  (1) read in the footprint of the random key file.
  (2) skip the random key that is encrypted with the public key of the user.
  (3) reading of the public key of the user of the file (for later use, if the file needs to be updated).
  (4) read the random key encrypted with the public key of the admin.
  (5) to decrypt the key random using the private key of the admin, obtained from its key store.
  (6) verify the fingerprint of the random key to ensure that it is correct.
  (7) to decrypt the data.

  The administrator can modify the data since it can re - encrypt data in a similar way to the way it was created in the first place.

• HP Notebook 13 Stream c020na: controller for encryption/decryption PCI driver

  Hello

  My computer is down to a problem with the encryption/decryption PCI driver controller.

  Someone know where I can find the driver to download?

  Thank you

  L

  Hello:

  I think that this driver will install all of these devices...

  This package contains the driver which allows Intel platform dynamic and thermal firmware setting. Intel platform dynamic and thermal environment information system temperature and power use for the thermal protection of the system to work properly. This package is provided for the laptop models running a supported operating system.

  File name: sp69113.exe

• Laptop HP 15-af008ax: could not find the drivers appropriate for ACPI\SMB0001\3 & 2411E6FE & 1 and PCI controller of encryption /Decryption

  After installing the drivers from the HP site I can not find drivers for ACPI\SMB0001\3 & 241E6FE & 1. Device Manager displays "UNKNOWN DEVICE" and said that no drivers were found for her. It is with th encryption /Decryption PCI controller.
  Please suggest me what to do. I'm confused ;-(

  Hello:

  You need this driver for the first...

  http://www.Synaptics.com/en/drivers.php

  To the PCI-E/D controller, you must manually install the driver as follows...

  Download and run this file.  Conclusion of any windows error.

  http://h20566.www2.HP.com/hpsc/SWD/public/detail?swItemId=vc_133833_1

  Go to Device Manager and click on the controller E/D PCI needing drivers.

  Click the driver tab.  Click on set to update driver.

  Select her browse my computer for driver software option and navigate to the folder of the driver that was created when you ran the file.

  This file will be located in C:\SWSetup\sp66974.

  Make sure that the include subfolders is selected and the driver should install.

  Then restart.

• HP 15-126ds: controller of encryption/decryption PCI for HP 15-126ds laptop

  Had to reinstall Windows 7 on this laptop. Was able to find all the devices with the exception of 2 drivers.

  PCI encryption/decryption controller

  and

  Unknown device

  In the properties on the Details tab, the value of hardware ID is ACPI\MSFT0101

  Help is appreciated!

  You are the very welcome.

  Yes, you are right, in which the TPM module has no value unless you use the Ultimate or Enterprise Version of W7.

  I'm surprised that the fix worked well.

  Long before MS released the hotfix, I found this basic driver I zipped to the top and attached it below.

  You can see if it works... instead of install, download and unzip the file in its folder.

  Don't do anything with the files in the folder.

  Go to Device Manager and click on the unknown device needing driver.

  Click the driver tab.  Click on set to update driver.  Select her browse my computer for driver software option and navigate to the driver folder, that you unzipped.

  Make sure that the include subfolders is selected and see if the pilot goes like this.

• 14 - ac136tu: PCI encryption/decryption controller

  I have a new laptop purchase. I install win 7 32 bit and also the drivers but still missing here. the encryption/decryption PCI controller... pls help me to solve this problem...

  Hello:

  See if this driver works...

  This package provides the driver Intel Trusted execution engine Interface (CITY) for the laptop models running a supported operating system. The Interface of the Intel Trusted execution engine allows the Secure Boot and provides services required for the security features of platform such as Intel Platform Trust Technology (Intel PPT).

  File name: sp71264.exe

• Laptop HP G2 355: help! Need controller driver for encryption/decryption PCI for new HP 355 G2 (AMD) w/Win 7 Pro 64-bit

  Just rebuilt new HP 355 G2 for Win 7 64 bit.  The ONLY driver I can't locate or get to work is the encryption/decryption of PCI controller. I have installed all the latest drivers for this model/OS of both HP and AMD sites is still no luck. Utility of automatic detection of AMD and Catalyst installed software all other drivers except this one successfully and when ends says that all drivers, including the chipset are installed successfully and current.

  I am at a total loss where to find this driver from a site of OEM, can you help me?

  Device ID:

  PCI\VEN_1022 & DEV_1537 & SUBSYS_15371022 & REV_00
  PCI\VEN_1022 & DEV_1537 & SUBSYS_15371022
  PCI\VEN_1022 & DEV_1537 & CC_108000
  PCI\VEN_1022 & DEV_1537 & CC_1080

  Thank you!!!

  Hello:

  You must run this driver and then install it manually.

  http://h20565.www2.HP.com/hpsc/SWD/public/detail?swItemId=vc_133833_1

  To manually install the driver in Device Manager and click on the controller of encryption/decryption IBOS who need the pilot.

  Click the driver tab.  Click on set to update driver.

  Select her browse my computer for driver software option and navigate to the folder of the driver that was created when you ran the file.

  This file will be located in C:\SWSetup\sp66974.

  Make sure that the include subfolders is selected, and the driver should install.

  Then restart.

• HP 240 G4: driver needed for encrypt/decrypt PCI controller

  Hello, I want to install drivers for the products HP 240 G4 (M8X89LT) and I can't find the driver for encrypt/decrypt PCI controller, I use windows 7 64 bit and looking for help here on the Board. Thanks in advance.

  You are the very welcome.

  Try the driver directly from Intel.  Accept the agreement, download, unzip and run the setup.exe file or use browse it to the method of file unzipped driver to install the driver.

  https://Downloadcenter.Intel.com/download/24892/Intel-TXE-Intel-trusted-execution-engine-driver-for-NUC5PGY-NUC5-x-py

• HP 15: PCI control of encryption/decryption

  my bluetooth does not work for HP15, also the encryption/decryption PCI controller shows a warning sign, thank you for giving me a solution. Unknown devices are also with warning signs, please give me a solution. WIFI does not work too.

  You are the very welcome.

  The only suggestion I can offer would be to try a different revision of the realtek bluetooth driver...

  This package contains the installation package driver for Realtek bluetooth in the laptop models running a supported operating system.

  File name: sp69555.exe

• downgrade from windows 8 for windows 7 HP 15-g013dx PCI encryption/decryption controller

  Hello;

  I try on my 15-g013dx HP solve PCI encryption/decryption Controller for Windows 7 Home Premium 64-bit

  I have download AMD-Catalyst-14-9-win7-win8.1-64Bit-raid-sb and continue problem

  I download driver Intel engine of reliable performance and problem continue

  I download a lot of SP # for SM BUS Controller, AMD driver AMD USB 3.0 host controller driver filter USB and nothing works

  Thanks for any help with this problem of HP Support Experts.

  Hello:

  You need the driver for this device...

  http://h20565.www2.hp.com/portal/site/hpsc/template.PAGE/public/psi/swdDetails/?spf_p.tpst=swdMain&spf_p.prp_swdMain=wsrp-navigationalState%3DswItem%253Dvc_133833_1&javax.portlet.begCacheTok=com.vignette.cachetoken&javax.portlet.endCacheTok=com.vignette.cachetoken

  You may need to install manually if auto installation does not work.

  To manually install the driver in Device Manager, click the controller E/D PCI needing drivers.

  Click the driver tab.  Click on set to update driver.  Select her browse my computer for driver software method and find the folder of the driver that was created when you ran the file.

  This file will be located in C:\SWSetup\sp66974.

  Make sure that the include Subolders and install the driver.  Then restart.

• Related issue of encryption-decryption Leap blackBerry!

  Hello

  In Blackberry Bond can encrypt us our data twice?

  Means that if I hello.txt in the sd card before use "Setting--> security" and privacy--> encryption--> Media Card Encryption Can quantify us this txt file using some application designed by Blackberry developer means app in Blackberry World or some other developer SNAP etc.?

  I thought of the computer which is very common that twice or three times of encryption-decryption with different algorithms, maybe I'm wrong, because there is no special data used by me except songs movies & cats!

  But as a software developer, I'm curious about encryption!

  Use AES-256 encryption & according to EETimes Blackberry claim huge time to break the encryption that made by AES - 256!

  But today I read new Dutch police 'reading' Blackberry emails

  If good authority can crack the encryption, then the bad guys also do!

  His Blackberry user feeling very precarious specailly passing other manufacturers of mobile because the only reason that is 'Blackberry is security'!

  What is this opinion experts forums or views?

  The response of BlackBerry indicates that this was 'communications' are involved. Depends on communication and used security measures.

  BlackBerry has published white papers on BBM. Those that can be found. I don't know later. E-mail will depend on the employee by the two sender security measures a receiver. Communication on the other has will depend on employee safety by the app. And finally it depends on the operational safety of the users.

  My feeling is that he is a third-party application.

  In any case, Yes, if you have an application that encrypts it's own data on the device or crypt individual files, I see no reason that could not be used in conjunction with encryption devices. I don't know that it adds anything. My there are advantages and disadvantages of encryption of file by file versus encryption of the system, but that's another question.

• encrypt/decrypt AES 256, error vorsalt

  Fanny.

  So I try to get encrypt/decrypt with AES 256, both key of 32 bytes and 32 bytes IVorSalt. (Well Yes new java security files installed v6)

  'IF' I have 32-bit keys but does not use an IV at all, I get a good result looking for the AES 256. (I can say that this is AES 256 by looking at the length of the encrypted channel)

  '' IF '' I use a 32-bit key and 16-bit salt, I get a result of AES 128 (I know - according to the docs two theyre if posed with the same size, but the docs are wrong).

  But when I switch to using two an 32-bit key AND a salt of 32 bytes, I get the below error.

  An error occurred during the attempt encrypt or decrypt your input string: bad parameters: invalid IvParameterSpec: com.rsa.jsafe.crypto.JSAFE_IVException: invalid IV length. Must be 16.

  Has anyone got ' EVER' encrypt to work for them using AES 256 key of 32 bytes and 32 bytes of salt? Is this a bug in CF? Or Java? Or I do something wrong?

  <!--- ////////////////////////////////////////////////////////////////////////// Here's the Code ///////////////////////////////////////////////////////////////////////// --->

  < cfset theAlgorithm = "Rijndael/CBC/PKCS5Padding" / >

  < cfset gKey = "hzj + 1o52d9N04JRsj3vTu09Q8jcX + fNmeyQZSDlZA5w =" > <!--these 2 are the same--> ".

  <!-< cfset gKey = ToBase64 (BinaryDecode ("8738fed68e7677d374e0946c8f7bd3bb4f50f23717f9f3667b2419483959039c", "Hex")) - > >

  < cfset theIV = BinaryDecode ("7fe8585328e9ac7b7fe8585328e9ac7b7fe8585328e9ac7b7fe8585328e9ac7b", "hex") >

  <! - < cfset theIV128 = BinaryDecode ("7fe8585328e9ac7b7fe8585328e9ac7b", "hex") > - >

  < name cffunction = "DoEncrypt" access = "public" returntype = index 'string' = "Fires when the application is first created." >

  < name cfargument = "szToEncrypt" type = "string" required = "true" / >

  < cfset secretkey = gKey >

  < cfset szReturn = encrypt (szToEncrypt, secretkey, theAlgorithm, 'Base64', theIV) >

  < cfreturn szReturn >

  < / cffunction >

  < name cffunction = "DoDecrypt" access = "public" returntype = index 'string' = "Fires when the application is first created." >

  < name cfargument = "szToDecrypt" type = "string" required = "true" / >

  < cfset secretkey = gKey >

  < cfset szReturn = decrypt (szToDecrypt, secretkey, theAlgorithm, 'Base64', theIV) >

  < cfreturn szReturn >

  < / cffunction >

  < cfset szStart form ["toencrypt'] = >

  < cfset szStart = 'Test me!' >

  < cfset szEnc = DoEncrypt (szStart) >

  < cfset szDec = DoDecrypt (szEnc) >

  < cfoutput > #szEnc # #szDec # < / cfoutput >

  If you do something wrong depends on what you're trying to do.

  When it comes to so-called AES 256 there are two options as to what this may mean.

  1. in the programming world, AES 256 means crypto AES with a 128-bit blocks and a 256-bit key size. The CBC IV should be the same size as the block, not the same size as the key. It should be 128-bit

  2. in some parts of the world programming (PHP, mainly) 256 AES is Rijndael crypto with a block size of 256 bits. The problem here is that it is NOT AES. It uses the MCRYPT_RIJNDAEL_256 algorithm. Rijndael is the algorithm on which AES has been built, but not everything Rijndael AES.

  So, if what you want is crypto AES 256 bit, then using a key of 256 bits with a 128-bit IV is the correct way to do it. AES * only * a 128-bit blocks. It is therefore neither a bug in Java or CF.

  If you really need the 256-bit block size, then I guess you are probably trying to interact with a system that uses PHP for crypto. If this is the case, I think that you need to dig the hard way in Java and make cryptography to support. You may also add new JCA/JCE Crypto Provider if none of the standard service providers included with CF has MCRYPT_RIJNDAEL_256.

  Good luck

  Jason

• PGP encryption/decryption

  BPEL able to encrypt and decrypt data using PGP?
  (1) our VAN will receive PGP encrypted files, and will be, pass us without decryption.
  (2) we need PGP cryptera data before sending to our VAN.
  Is this possible with BPEL?
  Thank you
  Mike

  I think that the BPEL itself does not have this capability.
  You develop a java program then expose it as a web service and then use BPEL to call this web service to complete the encryption/decryption.

  Kind regards
  Kerr

• Word file with macros trojan

  Hello world

  I have a doubt, recently I downloaded a file attachment to an e-mail, it was a MS Word file with macros and the Internet search that I discovered that it's a Trojan horse, the question is that if I downloaded the file and the Word automatically opens the file, but the context menu Macros told me that the macros are disabled and ask me if I still wanted to open of course, I said no!, then I deleted the file. According to it, its there any possibility that the Trojan horse could not install malicious software or opening certain ports? What I have to worry about something, in the case of installed malware of this macro, restore my mac, the problem is complete?

  Thank you.

  Its there any possibility that the Trojan horse could not install malicious software or opening certain ports?

  N ° No. Zero.

  I have to worry about something,.

  Peace in the world, perhaps. Other than that, no. Do not lose sleep over this kind of thing. You have a Mac.

• Word file missing-always present in recent documents

  Hello

  I use Word for Mac 2011 and OS X 10.10.5.

  I was looking to open a word file this morning and it was gone.

  Here's what I've tried:

  1 automatic of the files-nothing there

  2. temporary files nothing there

  3. the record shows recent items in word - but is not where he is supposed to be

  4. I saved the computer 7 days ago, (I know I had to do it everyday but I have not :/) - could find a first version of the Time Machine backup, but have invested days in in the meantime - so all the work went

  5. I emptied trash when I supported the computer 7 days ago, if I accidentally deleted in the meantime, it should be in the trash

  All the tips you have please help - it doesn't feel that it's for me

  Thank you

  recent documents does not take into account the file exist.

  If you select in the list it gives you an error WHERE it is trying to find?

  If you emptied the trash and that's where it went but there are 3rd party tools for trying to UN-erase files, but more you empty your trash and use the computer normally less you will be able to recover anything.

  is it possible that the file is on a drive flash, not connected external hard drive or network volume or cloud?