Length of hash for AES encryption

Similar Questions

• Support for hardware AES encryption

  Hello

  I have a router 1721 configured with an IPSec for a 3000 VPN tunnel.

  I tried to use the AES-256 encryption method, but when I try to create the game of transformation on the router, the following message appears

  ++++++++++++++++++++++++++++++++++++

  XXX (config) #crypto ipsec transform-set esp - aes 256 esp-md5-hmac myset2

  ATTENTION: hardware encryption does not support transformation

  ESP - aes 256 in IPSec transform myset2

  ++++++++++++++++++++++++++++++++++++

  Is that mean that the AES encryption would be via the software?

  Any idea what hardware encryption support be available for AES?

  Cordially------Naman

  Yes, AES is currently done in software only. We are coming up with a range of new hardware accelerators that will make both 3DES and AES, no word officially on when they will be released, sorry.

• Activation of the AES encryption on the network without WIRE of M30x-130 adapter

  How to enable encryption of data Advanced Encryption Standard (AES) on the WLAN of my laptop Satellite M30X-130 adapter? The LOCAL (internal) network card is an Intel PRO/Wireless 2200BG driver version is 8.0.12.20000 driver date: 08/03/2004 OS: Windows XP home SP2 according to TOSHIBA Satellite M30X user manual, this should be possible. My wireless router and the wireless in my desktop PC Adapter use AES data encryption and WPA - PSK network authentication. I can activate authentication network WPA - PSK on the laptop, but I can't select (only TKIP) AES data encryption.

  Kind regards

  Ekim

  There are new drivers available for the Intel WiFi card on the Intel Web site:

  http://support.Intel.com/support/wireless/WLAN/sb/CS-010623.htm

  If you install them, also install the tool Intel PROSet / Wireless, has its much better than the Wireless Zero Configuration tool Windows XP SP2 and it also has an option for AES data encryption.

• Satellite P200-157: Atheros AR5006EG WLan - AES encryption in question WPA

  Hello, sorry for my English.

  I bought a SATELLITE P200-157 with VISTA OEM 2 months, since I can't use WPA with Atheros AR5006EG AES encryption.

  The LAN does not work because three other computers are connected in wifi on the same router. With the Toshiba pc, I just can be connected to the WLAN key if my router WEP or WPA - PSK TKIP. in WPA - PSK AES/CCMP or TKIP + AES it does not work.
  When the SATELLITE is unable to connect to the WIFI network, it return when connecting try 'Abnormally long network connection' = connection too long and after vista let me choose between a diagnosis of the problem or borrowed from another ESSID.

  Did I missed something let work AES encryption? Thank you for helping me, I have no idea to solve this problem.

  Hello

  As far as I know all this (encryption) WLAN settings must operate if the material and the pre-installed driver supports all this. I'm afraid that in your case, he can't do it because the wireless network card and all modes of AES (Advanced Encryption Standard) encryption option are not supported.

• [WRT160NL] Problem with the only AES encryption

  Hello

  I have problems after changing the shape of TKIP or AES to AES encryption. After that everything works OK for a few minutes, then I'm 100% loss when ping anything (including the router). After waiting a few minutes connection starts to work again, and everything is repeated. All the time I'm connected. If I reconnect everything works for a few minutes and then I'm once again, this situation. Return to TKIP or AES does not change this behavior until the reboot of the router. I've got second laptop computer connected through wired interface and it work without problem. My card is: Intel WiFi Link 5100. Settings on the router:

  Firmware version: 1.00.01 B17 may 12, 2009

  Network mode: wireless - n only

  Channel width: wide angle: 40 MHz channel

  Scale channel: Auto

  Security mode: WPA2 Personal

  Does anyone have similar problems? Any ideas?

  Kind regards

  Maciek

  Try to re-flash the firmware on the router and re - configure the router from scratch. You can download the firmware from www.linksys.com/downloads.After re-flashing the firmware, reset the router for 30-35 seconds, power cycle the router and then re - configure from scratch.

• Download application (using AES encryption) on App world

  Hello

  We develop a hybrid application for our Canadian customers that uses AES encryption/decryption. Now, I want to download this app on App world. But at the bottom of the link I found to a certain certification for app.

  http://supportforums.BlackBerry.com/T5/native-development/AES-encryption-and-decryption-in-BB10-CASC...

  And to do this, I need to fill out the form at the link below:

  https://snapr.bis.doc.gov/Registration/register.do

  Please guide me, what exactly I need to do.

  It is very urgent.

  http://developer.BlackBerry.com/DevZone/blackberryworld/ex_controls_form.html

• AES encryption on ergonomic sculpt desktop (L5V-00001) wireless?

  I was wondering if I can use the keyboard in a business environment.

  AES encryption is not mentioned in the technical data sheet of the L5V, although products in earlier versions "2.4 ghz wireless protocol owner" of microsoft seem to have AES encryption.

  I was wondering if I can use the keyboard in a business environment.

  AES encryption is not mentioned in the technical data sheet of the L5V, although products in earlier versions "2.4 ghz wireless protocol owner" of microsoft seem to have AES encryption.

  Hello

  Thanks for posting your question on the Microsoft Community forums.

  Ideally, the keyboard can be used in any environment, provided he has the permission to do so. I recommend you contact the local, the IT team in your office who would be more that probably you do know if you have access to use it.

  Alternatively, you can also re - post your query on the TechNet forums to get help. Consult the following link:

  TechNet forums

  Hope this information is useful.

• AES encryption key strength

  Hi all

  I need to create an application that decrypts the encrypted data using AES with a 512-bit key. What I need to know, is that we can create a key length of 512-bit AES? The documentation says that we can create a key of length up to 256 bits. If this is the case, is it possible that I can add my own implementation of 512-bit AES key, or do I have to reduce the power of key used to encrypt the data initially?

  Thank you

  Basilio

  AES doesn't have a 512-bit key. It seems I'm in the need to check my data entry!

• AES encryption

  Hi guys, I have a piece of code that I use a loop on a form
  and encrypt the form field values. I use AES encryption with HEX encoding. I am
  use the generateSecretKey for the key. Everything works very well.
  When I dump of the key to the page and try and it doesn't work.
  
  How can I generate a key that I can get from a database later and have it work?
  
  Here is my code.
  
  

  Hi guys, I have a piece of code that I use a loop on a form
  and encrypt the form field values. I use AES encryption with HEX encoding. I am
  use the generateSecretKey for the key. Everything works very well.
  When I dump of the key to the page and try and it doesn't work.

  How can I generate a key that I can get from a database later and have it work?

  Here is my code.

• I have a toshiba satellite laptop and its asking me for the encryption of fingerprint to download windows 7

  to start my knees, toshiba software alerts me say this: I have a toshiba satellite laptop and asking his self for fingerprints
  encryption required to download windows 7, someone knows something about it.
  Help, please

  A proposal, I would say that your Toshiba Satelite asking you to update your finger fingerprint driver. You will need to click the link provided by the software of Toshiba or visit the Toshiba site and locate the appropriate driver.
   
   

• How is the SHA hash for a generated module?

  Hello

  I was wondering if someone had more information about the CodeModuleManager.getModuleHash () method?  The API says:

  "Returns the algorithm SHA hash in a module."

  I've used it before and it gives me what looks like a SHA1 hash.  The only problem is, I'm not able to reproduce this hash by generating a SHA or SHA1 hash using my computer.

  For example:

  If the BlackBerry gives me 02A826682116ED6A7B9B4429CAAFD2DF198A29F7 for the net_rim_app_manager module, running the same .cod file does not provide me with a corresponding number:

  azazel:tmp sheran$ openssl sha net_rim_app_manager.cod SHA(net_rim_app_manager.cod)= 03804aa899166d0eed95ddf3a758446c2159ee4b
  
  azazel:tmp sheran$ openssl sha1 net_rim_app_manager.cod SHA1(net_rim_app_manager.cod)= 7feebefdad9a39d98c70d0282cca935fd2dc55fe
  

  My questions:

  1. How did this hash generated for a specific module?

  2. how the calculation would be different for a module with many brothers and sisters?

  Thank you

  Sheran

  The tail of each signed module is a list of signatures. When you calculate the SHA-1 hash, you must exclude this part of the binary file to hash.

  When a module is composed of several modules, it is in fact a ZIP file. Each ZIP entry that contains a module (brother) has its own hash and signatures. Easiest way to test this is to decompress the. COD file and calculate the values of the hash for each file.

• SQL error: ORA-00910: specified length too long for its data type

  Using Oracle 11.2.0.1 on Oracle Linux 5.8 x 64
  
  I try to install Zabbix http://www.zabbix.com and uses the Oracle database as the data store. The script of the diagram provided below does not work.
  

  CREATE TABLE maintenances (
       maintenanceid            number(20)                                NOT NULL,
       name                     nvarchar2(128)  DEFAULT ''                ,
       maintenance_type         number(10)      DEFAULT '0'               NOT NULL,
       description              nvarchar2(2048) DEFAULT ''                ,
       active_since             number(10)      DEFAULT '0'               NOT NULL,
       active_till              number(10)      DEFAULT '0'               NOT NULL,
       PRIMARY KEY (maintenanceid)
  );

  When I run it, I get

  Error at Command Line:5 Column:42
  Error report:
  SQL Error: ORA-00910: specified length too long for its datatype
  00910. 00000 -  "specified length too long for its datatype"
  *Cause:    for datatypes CHAR and RAW, the length specified was > 2000;
             otherwise, the length specified was > 4000.
  *Action:   use a shorter length or switch to a datatype permitting a
             longer length such as a VARCHAR2, LONG CHAR, or LONG RAW

  According to the oracle documentation for nvarchar2 limit is 4000. What am I missing here?

  "4000 bytes is the ultimate maximum." You can say 4000 * characters *, but it will always be limited to 4000 * bytes *. "
  http://asktom.Oracle.com/pls/Apex/f?p=100:11:0:P11_QUESTION_ID:1224836384599 #201073000346459201\

  "The maximum length of the column is determined by the definition of national character set. The width of the character NVARCHAR2 data specifications match the number of characters. The authorized maximum column size is 4000 bytes. »
  http://docs.Oracle.com/CD/E11882_01/server.112/e26088/sql_elements001.htm#SQLRF50976

  Furthermore, you treat numbers as STRINGS, remove the quotes around your zero.

• Length in characters for text Variables

  Hi people,
  
  Small question:
  Is there a maximum length of character for text variables OPA?
  
  Isamu-

  Isamu,

  There is no maximum length for text variables.

• Xor may be crack the NoPadding/CFB-AES encryption-

  Hello
  Looks like a password can be discovered based on the numerical value of an old known password (using the same key).
  
  For example
  In case I have an obvious password: AAA
  and I have the password enrypted form of bytes: crypt (AAA).
  
  I can decrypt any password based on the result of the Xor of the clear and encrypted password: (AAA xor crypt (AAA))
  BBB = crypt (BBB) xor (xor crypt (AAA) AAA)
  It looks like a security problem.
  Is this a bug of java or mine?
  BTW, if you use AES/CFB8/NoPadding, this is not the case.
  
  Here is the Code example:

  import javax.crypto.Cipher;
  import javax.crypto.KeyGenerator;
  import javax.crypto.SecretKey;
  import javax.crypto.spec.IvParameterSpec;
  
  public class MyTest
  {
       static SecretKey m_secretKey = null;
  
       public static void main(String[] args)
       {
            try
            {
                 MyTest test = new MyTest();
                 test.init();
                 test.encrypttionBreak();
            }
            catch (Exception e)
            {
                 e.printStackTrace();
            }
  
       }
  
       private void init() throws Exception
       {
            if (m_secretKey == null)
                 m_secretKey = KeyGenerator.getInstance("AES").generateKey();
       }
  
  
  
       private byte[] aesEncrypt(byte[] data, int mode) throws Exception
       {
            byte[] m_iv = new byte[16];
  
            for (int i = 0; i < m_iv.length; i++)
            {
                 m_iv[i] = (byte) i;
            }
  
            IvParameterSpec iv = new IvParameterSpec(m_iv);
            Cipher cipher = Cipher.getInstance("AES/CFB/NoPadding", "SunJCE");
            cipher.init(mode, m_secretKey, iv);
  
            byte[] cipherInput = cipher.doFinal(data);
  
            return cipherInput;
       }
  
       public void encrypttionBreak() throws Exception
       {
            String clearText = "aaaaaaaaaaaa";
            byte[] cipherBytes = aesEncrypt(clearText.getBytes(),
                 Cipher.ENCRYPT_MODE);
  
            byte clearBytes[] = clearText.getBytes();
            byte xorKey[] = new byte[clearBytes.length];
            for (int i = 0; i < xorKey.length; i++)
            {
                 xorKey[i] = (byte) (clearBytes[i] ^ cipherBytes);
  
            }
  
  
  
            String password = "mypass";
  
  
  
            byte[] passwordEncrypted = aesEncrypt(password.getBytes(),
  
                 Cipher.ENCRYPT_MODE);
  
  
  
            byte breakFinal[] = new byte[passwordEncrypted.length];
  
            for (int i = 0; i < breakFinal.length; i++)
  
            {
  
                 breakFinal[i] = (byte) (passwordEncrypted[i] ^ xorKey[i]);
  
            }
  
  
  
            System.out.println("break final " + new String(breakFinal));
  
  
  
       }
  
  
  
  }
  
  
  
  
  
  Edited by: sabre150 on 19-Aug-2011 02:37
  
  
  
  Moderator: added [ code] tags to make the code readable. 

  This is your bug, because you randomly pick a mode and a method without really understanding them. Just look at the definition of [https://secure.wikimedia.org/wikipedia/en/wiki/Block_cipher_modes_of_operation#Cipher_feedback_.28CFB.29]

  Now, look at what your function "crypt". You use a fixed iv for everything, we just label the IV. So crypt ('AAA') = AES (key, iv) xor "AAA". That's why crypt ('AAA') xor 'AAA' = AES (key, iv). You should be able to understand what crypt('BBB") xor xor crypt ('AAA')"AAA ".

• Mount gray for disk encrypted in Recovery Mode

  I'm under the last El Capitan on a MacBook Pro for mid-2015. The internal boot drive is encrypted with FileVault. The issue I see is that when I boot into Recovery Mode so that I can run first aid on the boot volume, the "Mount" button is dimmed when I select the logical volume. Anyone know what I am doing wrong or what could be the problem?

  Thank you.

  You must first UNLOCK it. To do this, in Recovery Mode. Select the volume greyed, then click on edit on the menu bar and UNLOCK. Enter a password has been set to unlock the volume on startup.