What is hash algorithm?

Hi Everyone,
Please see this article and explain me what is hash algorithm? How it works internally?
Hash Partitioning
Hash partitioning maps data to partitions based on a hashing algorithm that Oracle
applies to the partitioning key that you identify. The hashing algorithm evenly
distributes rows among partitions, giving partitions approximately the same size.
Hash partitioning is the ideal method for distributing data evenly across devices. Hash
partitioning is also an easy-to-use alternative to range partitioning, especially when
the data to be partitioned is not historical or has no obvious partitioning key.Can we say it will act an Index?
Regards,
BS2012.
Edited by: BS2012 on May 17, 2013 4:53 PM

Hi,
I was previously checking some basic stuffs in other sites and got suffered. Because of that, I want to confirm everything in forum itself. I got my answer. Thanks anyway for your reply.
Regards,
BS2012.

Similar Messages

Signature hash algorithm (e.g. SHA-1, SHA-256...) used in Apple Mail ?

Would anybody know what is the signature hash algorithm being used by Apple Mail ?
And can be selected ?
As NIST recommends the use of SHA-2 in 2011.
I have searched quite a while but no information is found in this area.
Thanks your help in advance !

I've had the same problem now for approximately 6 months. Many of the senders in my inbox are wrong. I haven't changed anything other than upgraded to OS 10.7. It only effects some emails and not all. It is a problem when I search as well because the sender details can't be found
Please help!!!
Thanks.

What is HASH Table?

Hi all,
Can anyone explain me what is HASH table?
Thanks in Advance.......

An internal table of type HASHED can be used to improve performance. Hashed tables have no linear index. You can only access hashed tables by specifying
the key. The system has its own hash algorithm for managing the table.The response time for key access remains constant, regardless of the number of table entries. Like database tables, hashed tables always have a unique key. Hashed tables are useful if you want to construct and use an internal table
which resembles a database table or for processing large amounts of data.A restriction for hashed tables is that they may not contain more than 2 million entries.
You can also chk the links
http://help.sap.com/saphelp_nw04/helpdata/en/fc/eb2fcc358411d1829f0000e829fbfe/content.htm
http://help.sap.com/saphelp_47x200/helpdata/en/90/8d7328b1af11d194f600a0c929b3c3/frameset.htm
If you have an internal table in your program which is used solely for lookup, it is good programming practice to use a hash table. The example below shows this, in combination with a method for buffering SELECT SINGLE results.
Code
*&      Form select_dispo
      Get MRP controller and in-house production time from material
      and plant
     --> MATNR Material
     --> RESWK Plant
     <-- DISPO MRP controller
     <-- DZEIT In-house production time
form select_from_marc using matnr werks dispo dzeit.
types: begin of mrp_lookup_type,
           matnr like marc-matnr,
           werks like marc-werks,
           dispo like marc-dispo,
           dzeit like marc-dzeit,
         end of mrp_lookup_type.
Define static hashed table to hold results
statics: st_mrp type hashed table of mrp_lookup_type
                  with unique key matnr werks.
data: l_wa_mrp type mrp_lookup_type.
clear dzeit.
See if data is in the table
read table st_mrp into l_wa_mrp with table key matnr = matnr
                                                 werks = werks.
If not in table, get it from the database
if not sy-subrc is initial.
    select single dispo dzeit from marc
        into corresponding fields of l_wa_mrp-dispo
        where matnr eq matnr
          and werks eq werks.
Insert into table
    l_wa_mrp-matnr = matnr.
    l_wa_mrp-werks = werks.
    insert l_wa_mrp into table st_mrp.
endif.
dispo = l_wa_mrp-dispo.                      " MRP Controller
dzeit = l_wa_mrp-dzeit.                      " Inhouse production time
endform.                    " select_from_marc
reward points if helpful

ACE20 and hashing algorithm

I have a secure website behind an Cisco ACE20 using A2(3.2). Everything is working great. Only that now I need to renew my certificate. When creating the CSR and sending it to my CA I get this warning:
"Alert: Your CSR has been signed using the MD5 hashing algorithm. While the MD5 hashing algorithm is not optimal it will not prevent you from using this CSR to enroll for your SSL certificate. VeriSign best practices recommend that you use a different hashing algorithm for the signature. CSR Information"
Anybody know if it is possible to use SHA instead of MD5 or what can I do in this case?

I dont think you can chnage the signing method for CSRs on the ACE directly. But i would use something like OpenSSL to generate the CSR for SHA.
http://gnuwin32.sourceforge.net/packages/openssl.htm
openssl req -out c:\CSR.csr -new -newkey rsa:2048 -nodes -keyout c:\privateKey.key -sha1
The above will load a wizard format questionare for your CSR parameters similar to the ACE.
You can then upload your key, and cert when you get it to the ACE afterwards.
==========================
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A free, open source network device configuration management tool, customizable to your needs!
- Always vote on an answer if you found it helpful

Which SHA hash algorithm is DS 5.1 using?

i'm trying to find out whether DS 5.1 uses the SHA-1 (160 bit) or the SHA-256 (256bit). i'm using coldfusion to query the directory and in order to compare password given by the user with the one stored in the directory i should hash the given password. coldfusion (a library, it's not a default function) has two differnt hash algorithms SHA-1 and SHA-256, which one should i use?
ioanna

DS uses SHA-1 (160 bit). And I'm not sure what you are proposing will work. I think you need the salt to generate the hash. Why do you need to compare the password outside the directory? You might be able to use the LDAP compare operation.

Hash algorithms for passwords.

Hello!
I have those question.
When I store password in database I can use any hash algorithms.
But if I would use local database and start my application on another computer values after hashing will be the same or not?
For example :
string password = "admin";
int passwordToDb = password.GetHashCode(); // this value I save in db.
On another computer, when I will verify my password and calculate hash, it wouldn't be the same? I guess that not.
And what about SHA algorithms? Will I have such problem?

Use MD5 encryption :
/// <summary>
/// Hasher la chaîne en MD5
/// </summary>
/// <param name="chaine">La chaîne à hasher.</param>
/// <returns>La chaîne hashée.</returns>
public static String hashWithMD5(String chaine)
//L'objet MD5.
MD5 md5HashAlgo = MD5.Create();
//le résultat.
StringBuilder resultat = new StringBuilder();
//Tableau d'octes pour le hashage.
byte[] byteArrayToHash = Encoding.UTF8.GetBytes(chaine);
//Hasher la chaîne puis placer le résultat dans le tableau.
byte[] hashResult = md5HashAlgo.ComputeHash(byteArrayToHash);
//Parcourir le tableau pour le mettre dans le résultat.
for (int i = 0; i < hashResult.Length; i++)
//Afficher le Hash en hexadecimal.
resultat.Append(hashResult[i].ToString("X2"));
//Retourner le résultat.
return resultat.ToString();

Linux Redhat RHAS 2.1 & 3.x /etc/shadow hash algorithm

We are trying to load the linux user passwords into our OID server.
The hash is not unix crypt.
We have other unix like the HPUX server's work fine as {CRYPT} but the linux shadow does not migrate.
What is the default hash algorithm for RH?
Has anybody done users & passwords from RH -to-> OID?

That's what we all remember too. But it doesnt.
HPUX uses {CRYPT} syncs fine with OID userPassword field.
That same password value doesn't match with Linux.
So we tried {MD5} format. no luck.
I've created the user rp9999 rp9999 on several Linux systems. differnet value each time:
i tried this on my linux machine:
useradd rp9999 rp9999
passwd rp9999 (type password wrong twice: rp9999 rp9999)
/etc/shadow
rp9999:$1$YkjrvM53$gIyxjK8fLFuCmPjywPPXz/:13024:0:99999:7:::
Linux mach1 2.4.21-27.0.2.EL #1 Wed Jan 12 23:46:37 EST 2005 i686 i686 i386 GNU/Linux
so i went to a different machine - mach2:
rp9999:$1$d.DdubGw$Gqj.LxU8Fejq5yNFMSphC1:13024:0:99999:7:::
but from seperate DIFFERENT oid servers user=rp9999 & oidpasswd=rp9999:
authpassword;orclcommonpwd={MD5}XxXV8b0izcJsmcQJ23lmoQ==
userpassword: {MD5}XxXV8b0izcJsmcQJ23lmoQ==
What's going on with Linux /etc/shadow?

How to enable SHA-2 hashing algorithm support on windows 7

Hello All,
Please suggest how to invalidate SHA-1 and MD5 algorithm on windows 7 and how to enable SHA-2.
As suggested by Microsoft, regarding the availability of SHA-2 hashing algorithm, security update KB2949927 is installed on windows 7.
Thank You

Hi,
Please check if you have installed the below mentioned update:
http://support.microsoft.com/kb/2973337/en-us
After installing this update, SHA512 is enabled for TLSv1.2.
IE shall also be using TLS internally. Hope that should resolve your problem.
Please refer to the below link for a similar discussion and its solution posted there:
https://social.technet.microsoft.com/Forums/office/en-US/857c6804-8ce1-4f09-b657-00554055da16/tls-12-and-sha512?forum=winserversecurity
(Please mark as answer if it resolves your issue. Please upvote if it is helpful.)
Regards,
Rajesh

Is it possible to change the hash algorithm when I renew the Root CA

My Root CA is installed on a Windows Server 2008. The Hash algorithm of Root CA in my environment is MD5. I would like to renew the Root CA and change the Hash algorithm to SHA1. Is it possible to change it?
Regards,
Terry | My Blog: http://terrytlslau.tls1.cc

Hi,
The hashing
algorithm chosen during the setup of a Certificate Authority determines how the certificates that the CA issues are digitally signed. It is a one
algorithm per CA scenario, so if your environment requires multiple algorithms for compatibility, then you will need multiple PKI hierarchies (one for each
algorithm.) Prior to Windows 2008, you had to rebuild the CA and decommision the entire PKI hierarchy to
change the signing algorithm used. In Windows 2008 and 2008 R2, we allow you to
change the algorithm and from that point forward it will digitally sign all new certificates with the updated
algorithm.
The
Certificate
Services Enhancements in Longhorn Server Whitepaper describing these steps can be found under the section
Configuring the Cryptographic Algorithms used by the CA.
Step 1: Verify the configuration of the CRL and AIA paths. Sometimes users will manually
change these paths to not include the crl name suffix variable that distinguish multiple certificates on a CA. This is important because the process of changing the
algorithm requires the renewal of the private key and results in administration of multiple CA certificates. When we publish multiple crt and crls, they will be identified as CAName and CAName(1.) You can verify these paths
include the variables by checking the registry keys below:
[HKLM\SYSTEM\CurrentControlSet\Services\CertSvc\Configuration\{CAname}
CRLPublicationURLs = "1:%WINDIR%\system32\CertSrv\CertEnroll\%%3%%8%%9.crl\n2:http://FCCA01.fourthcoffee.com/certenroll/%%3%%8%%9.crl\n10:ldap:///CN=%%7%%8,CN=%%2,CN=CDP,CN=Public
Key Services,CN=Services,%%6%%10"
CACertPublicationURLs = "1:%WINDIR%\system32\CertSrv\CertEnroll\%%1_%%3%%4.crt\n2:http://FCCA01.fourthcoffee.com/certenroll/%%1_%%3%%4.crt\n2:ldap:///CN=%%7,CN=AIA,CN=Public Key Services,CN=Services,%%6%%11"
Step 2: Modify the CSP parameters to specify the new
algorithm. The CSP may use the original CryptoAPI or Cryptography API:Next Generation - you can verify this by looking in the registry key
HKLM\SYSTEM\CurrentControlSet\Services\CertSvc\Configuration\{CAname}\CSP.
If you have the regvalues
CNGPublicKeyAlgorithm and CNGHashAlgorithm then your CSP is using Next Generation.
Change the
algorithm from MD5 to SHA1 and was using Cryptography API: Next Generation. The original registry value was:
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\CertSvc\Configuration\{CAname}\CSP]
"ProviderType"=dword:00000000
"Provider"="Microsoft Software Key Storage Provider"
"HashAlgorithm"=dword:00008003
"CNGPublicKeyAlgorithm"="RSA"
"CNGHashAlgorithm"="MD5"
"MachineKeyset"=dword:00000001
we changed it to
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\CertSvc\Configuration\{CAname}\CSP]
"ProviderType"=dword:00000000
"Provider"="Microsoft Software Key Storage Provider"
"HashAlgorithm"=dword:00008004
"CNGPublicKeyAlgorithm"="RSA"
"CNGHashAlgorithm"="SHA1"
"MachineKeyset"=dword:00000001
Step 3: Restart the CA service. You can do this in the CA MMC. Right Click on the
CA and choose "Stop Service" and "Start Service".
Step 4: Renew the CA certificate with new Private Key. Right click on the CA and
choose "Renew CA certificate". Choose to renew the public and private key pair. On completion, this will result in the CA having two certificates. You will see that the old one has the MD5 for the Signature
Hash Algorithm and that the new certificate uses SHA1.
Hope this helps!
Best Regards
Elytis Cheng
TechNet Subscriber Support
If you are
TechNet Subscription
user and have any feedback on our support quality, please send your feedback
here.
Elytis Cheng
TechNet Community Support

OID And Java Hash Algorithm Output Differences?

Hi,
Can anyone tell me why I am not able to recreate the OID ldap password hash algorithm? Or can anyone tell me why I get these subtle differences between my Java created message digest and the one that is read directly from the oracle ldap hint password field? They are both based on the same original word "test".
OID Hint Password from ldap ==> {SHA}zrFqbho8VPUOnVvtyUb4c+RWF+k=
Hash created based on input ==> {SHA}zrFqbho8VPUOP1vtyUb4c+RWF+k=
Here is a little background. I am working on developing a custom forgot password feature for my web site using OID 10g R2 and Java. I am able to retrieve the oracle hint password from OID using Java JNDI as the orcladmin. This ldap password is a SHA message digest, or hash, that is base 64 encoded. Since it is a one way algorithm I can not decrypt. So instead I take the clear text password string provided by the user and create a message digest(SHA) and then encode in base 64 using Java 1.4.2 like so;
MessageDigest md = MessageDigest.getInstance("SHA");
md.update(clearTextPassword.getBytes());
String userSuppliedPassword = new String(md.digest());
BASE64Encoder base64encoder = new BASE64Encoder();
String output = "{SHA}" + base64encoder.encode(userSuppliedPassword.getBytes());
By the way, I have been able to work around this issue by performing the compare using JNDI search but was curious why this was happening. Thanks!

Hi
I am having similar issue. I have to save passwords in encrypted form to LDAP. But not working. I am prepending the encrypted password {SHA} so OID should not convert further.
Any help is appreciated
Thanks

What is the algorithm for this?

if I have a string 000111 (or any amount of zeros and ones), what is the algorithm for me to get all possible combinations? (001011, 001101, ...)

Odd but the following code does not yeild the results you list in your post. Maybe you have a mistake? Or am I missing something?
class test
public int[] getC(int[] c, int n)
          int m= c.length;
          for (int i= m; i-- > 0;)
               if (++c[i] <= n-(m-i))
                    while (++i < m)
                         c= c[i-1]+1;
                    return c;
          return null;
     public static void main(String[] args)
          test t = new test();
          int[] input = {0,1};
          int n = 4;
          int[] res = t.getC(input, n);
          for (int i = 0; i < res.length; i++)
               System.out.println(res[i]);

What is "hash code"?

hashCode() is available in most of the classes in Java API.
What is "hash code"?
Thanks!

From the page
http://java.sun.com/docs/books/tutorial/java/javaOO/objectclass.html
"The value returned by hashCode is an int that maps an object into a bucket in a hash table. An object must always produce the same hash code. However, objects can share hash codes (they aren't necessarily unique)."

Configuring AD LDS Password Hash Algorithm

Hello,
I have a client which has a requirement that the passwords in Active Directory should be stored using the Secure Hash Standard (SHS) standard. This could be SHA-1 or SHA-2.
Could you please tell me where can I check the current hashing algorithm and configure the new one?
Windows Server 2008 R2 Enterprise
Forest & Domain functional level: Windows Server 2008 R2
Thanks!

Hi Levente,
I don’t think it is possible to specify algorithm to encrypt AD passwords. The password is computed by RSA MD-4 and MD-5 algorithm.
More information for you:
Help: How to configure encryption/hashing policies on Active Directory 2008 LDS
http://social.technet.microsoft.com/Forums/windowsserver/en-US/04591e6e-22d3-4251-ab55-b778a479465e/help-how-to-configure-encryptionhashing-policies-on-active-directory-2008-lds?forum=winserverDS
View Password hash in Active Directory
http://social.technet.microsoft.com/Forums/windowsserver/en-US/63e3cf2d-f186-418e-bc85-58bdc1861aae/view-password-hash-in-active-directory?forum=winserverfiles
Active Directory hashing algorithms used?
http://social.technet.microsoft.com/forums/windowsserver/en-US/7fbc0669-2ccb-4c24-9f08-24241e30d72b/active-directory-hashing-algorithms-used
Md5 passwords in Active Directory
http://social.technet.microsoft.com/Forums/windowsserver/en-US/5bed809e-3e04-4917-b940-47d3c758987f/md5-passwords-in-active-directory
Best Regards,
Amy

HTTPS SSL Certificate Signed using Weak Hashing Algorithm

I am support one client for, whom falls under Security scans mandatory for new implementation of ASA 5520 device . The client uses Nessus Scan and the test results are attached
The Nessus scanner hit on 1 Medium vulnerabilities, Could you pls review the statement and provide work around for the same.
Nessus Scanner reports
Medium Severity Vulnerability
Port : https (443/tcp)
Issue:
SSL Certificate Signed using Weak Hashing Algorithm
Synopsis :
The SSL certificate has been signed using a weak hash algorithm.
Description :
The remote service uses an SSL certificate that has been signed using
a cryptographically weak hashing algorithm - MD2, MD4, or MD5. These
signature algorithms are known to be vulnerable to collision attacks.
In theory, a determined attacker may be able to leverage this weakness
to generate another certificate with the same digital signature, which
could allow him to masquerade as the affected service.
See also :
http://tools.ietf.org/html/rfc3279
http://www.phreedom.org/research/rogue-ca/
http://www.microsoft.com/technet/security/advisory/961509.mspx
http://www.kb.cert.org/vuls/id/836068
Solution :
Contact the Certificate Authority to have the certificate reissued.
Plugin Output :
Here is the service's SSL certificate :
Subject Name:
Common Name: xxxxxxxxxx
Issuer Name:
Common Name: xxxxxxxxxx
Serial Number: D8 2E 56 4E
Version: 3
Signature Algorithm: MD5 With RSA Encryption
Not Valid Before: Aug 25 11:15:36 2011 GMT
Not Valid After: Aug 22 11:15:36 2021 GMT
Public Key Info:
Algorithm: RSA Encryption
Public Key: 00 AA AB 57 9C 74 FF E9 FB 68 E1 BF 69 90 8E D2 65 7F DF 40
D6 F6 29 E7 35 5E 16 FB 76 AA 03 3F 47 07 5A D0 6D 07 E0 EC
06 7E D4 9A 43 C6 B3 A6 93 B7 76 CC 58 31 25 36 98 04 30 E6
77 56 D7 C3 EE EF 7A 79 21 5E A0 78 9B F6 1B C5 E6 2A 10 B5
CB 90 3D 6D 7C A0 8D B1 B8 76 61 7F E2 D1 00 45 E2 A1 C7 9F
57 00 37 60 27 E1 56 2A 83 F5 0E 48 36 CC 61 85 59 54 0C CB
78 82 FB 50 17 CB 7D CD 15
Exponent: 01 00 01
Signature: 00 24 51 24 25 47 62 30 73 95 37 C4 71 7E BD E4 95 68 76 35
2E AF 2B 4A 23 EE 15 AF E9 09 93 3F 02 BB F8 45 00 A1 12 A9
F7 5A 0C E8 4D DB AE 92 70 E4 4C 24 10 58 6B A9 87 E1 F0 12
AE 12 18 E8 AB DF B9 02 F7 DA BE 3C 45 02 C4 1E 81 44 C2 74
25 A2 81 E7 D6 38 ED B9 66 4C 4A 17 AC E3 05 1A 01 14 88 23
E8 9F 3B 5C C5 B8 13 97 27 17 C3 02 5F 6E 7C DB 4C D3 65 B5
C5 FC 94 62 59 04 E7 7E FB
CVE :
CVE-2004-2761
BID :
BID 11849
BID 33065
Other References :
OSVDB:45106
OSVDB:45108
OSVDB:45127
CWE:310
Nessus Plugin ID :
35291
VulnDB ID:
69469
and try with configure the ssl encryption method with " ssl encryption 3des-sha1 aes128-sha1 aes256-sha1 rc4-md5" but it throws the same issue.
Here is ASA log
7|Oct 19 2011 01:59:34|725010: Device supports the following 4 cipher(s).
7|Oct 19 2011 01:59:34|725011: Cipher[1] : DES-CBC3-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[2] : AES128-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[3] : AES256-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[4] : RC4-MD5
7|Oct 19 2011 01:59:34|725008: SSL client production:xxxxxxxxx/2587 proposes the following 26 cipher(s).
7|Oct 19 2011 01:59:34|725011: Cipher[1] : ADH-AES256-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[2] : DHE-RSA-AES256-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[3] : DHE-DSS-AES256-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[4] : AES256-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[5] : ADH-AES128-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[6] : DHE-RSA-AES128-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[7] : DHE-DSS-AES128-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[8] : AES128-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[9] : ADH-DES-CBC3-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[10] : ADH-DES-CBC-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[11] : EXP-ADH-DES-CBC-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[12] : ADH-RC4-MD5
7|Oct 19 2011 01:59:34|725011: Cipher[13] : EXP-ADH-RC4-MD5
7|Oct 19 2011 01:59:34|725011: Cipher[14] : EDH-RSA-DES-CBC3-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[15] : EDH-RSA-DES-CBC-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[16] : EXP-EDH-RSA-DES-CBC-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[17] : EDH-DSS-DES-CBC3-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[18] : EDH-DSS-DES-CBC-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[19] : EXP-EDH-DSS-DES-CBC-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[20] : DES-CBC3-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[21] : DES-CBC-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[22] : EXP-DES-CBC-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[23] : EXP-RC2-CBC-MD5
7|Oct 19 2011 01:59:34|725011: Cipher[24] : RC4-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[25] : RC4-MD5
7|Oct 19 2011 01:59:34|725011: Cipher[26] : EXP-RC4-MD5
7|Oct 19 2011 01:59:34|725012: Device chooses cipher : DES-CBC3-SHA for the SSL session with client production:xxxxxxxx/2586
6|Oct 19 2011 01:59:34|725002: Device completed SSL handshake with client production:xxxxxxxxx/2586
6|Oct 19 2011 01:59:34|725007: SSL session with client production:xxxxxxxx/2586 terminated.
6|Oct 19 2011 01:59:34|302014: Teardown TCP connection 3201 for production:xxxxxxx/2586 to identity:xxxxxx/443 duration 0:00:00 bytes 758 TCP Reset-I
6|Oct 19 2011 01:59:34|302013: Built inbound TCP connection 3202 for production:xxxxxxxxxxx/2587 (xxxxxxxxx/2587) to identity:xxxxxx/443 (xxxxxxx/443)
6|Oct 19 2011 01:59:34|725001: Starting SSL handshake with client production:xxxxxxxxxxx/2587 for TLSv1 session.
7|Oct 19 2011 01:59:34|725010: Device supports the following 4 cipher(s).
7|Oct 19 2011 01:59:34|725011: Cipher[1] : DES-CBC3-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[2] : AES128-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[3] : AES256-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[4] : RC4-MD5
7|Oct 19 2011 01:59:34|725008: SSL client production:xxxxxxxxx/2587 proposes the following 26 cipher(s).
7|Oct 19 2011 01:59:34|725011: Cipher[1] : ADH-AES256-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[2] : DHE-RSA-AES256-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[3] : DHE-DSS-AES256-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[4] : AES256-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[5] : ADH-AES128-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[6] : DHE-RSA-AES128-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[7] : DHE-DSS-AES128-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[8] : AES128-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[9] : ADH-DES-CBC3-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[10] : ADH-DES-CBC-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[11] : EXP-ADH-DES-CBC-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[12] : ADH-RC4-MD5
7|Oct 19 2011 01:59:34|725011: Cipher[13] : EXP-ADH-RC4-MD5
7|Oct 19 2011 01:59:34|725011: Cipher[14] : EDH-RSA-DES-CBC3-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[15] : EDH-RSA-DES-CBC-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[16] : EXP-EDH-RSA-DES-CBC-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[17] : EDH-DSS-DES-CBC3-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[18] : EDH-DSS-DES-CBC-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[19] : EXP-EDH-DSS-DES-CBC-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[20] : DES-CBC3-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[21] : DES-CBC-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[22] : EXP-DES-CBC-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[23] : EXP-RC2-CBC-MD5
7|Oct 19 2011 01:59:34|725011: Cipher[24] : RC4-SHA
7|Oct 19 2011 01:59:34|725011: Cipher[25] : RC4-MD5
7|Oct 19 2011 01:59:34|725011: Cipher[26] : EXP-RC4-MD5
7|Oct 19 2011 01:59:34|725012: Device chooses cipher : DES-CBC3-SHA for the SSL session with client production:xxxxxxxxxx/2587
6|Oct 19 2011 01:59:34|725002: Device completed SSL handshake with client production:xxxxxxxxx/2587
H

Hi Ramkumar,
The report is complaining that the Certificate Authority who signed the ID certificate presented by the ASA used a weak hashing algorithm. First, you need to determine who signed the certificate.
If the certificate is self-signed by the ASA, you can generate a new certificate and use SHA1 as the hashing algorithm. To do this, the ASA needs to be running a software version that is at least 8.2(4) (8.3 and 8.4 software also support SHA1).
If the certificate is signed by an external CA, you need to contact them and ask them to sign a new certificate for you using SHA instead of MD5.
The links you posted have more information on this as well. Hope that helps.
-Mike

What is HASH JOIN ANTI

Hi ,
From my explain plan i see HASH JOIN ANTI .
what arises to this join in my select query ?
select * from ( select * from tbl1 where not exists (select * from tbl2 where tbl1.col1 = tbl2.col1) jj
where not exist (select * from tbl3 where jj.col1 = tbl3.col1))i think it's the dbl not exists that cause this hash join anti
but what impact will this type of join has on my query performance ?
tks & rdgs

Hi ,
but i tot when using SELECT where xx in ( ) or XX NOT in ( ) then it'll for every single record then it would perform the select query within the IN ( ) or NOT IN ( )
wherelse EXISTS or NOT EXISTS will actually do prelisting and then compare from there onwards ?
tks & rdgs

What is hash algorithm?

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