Lightdm hangs with wrong password

Hi,
I use lightdm with lightdm-gtk3-greeter and whenever I enter a wrong password to login, it just hangs. How can I solve this problem?

The problem solved itself after updating the system.
Thank you for your help.

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How many times with wrong password will phone lock out

how many times with wrong password will phone lock out

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Connect DB - SYS user with wrong password

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(I have searched for a solution online but was unable to find any :( )
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or
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HT1349 because of freequent trying with wrong passwords by children, it is coming as disabled, contact I tunes

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1. Enable audit in database with pararameter AUDIT_TRAIL
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Edited by: P. Forstmann on 22 févr. 2011 13:39
Edited by: P. Forstmann on 22 févr. 2011 13:41

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hi..........sir
when i am executing the following code..with wrong password....i am getting the BadPaddingException:Given final block not properly padded............
plz help me to solve this one with the solution.
I am doing my final project .....i am implementing an security protocol....
here is thecode...
String pw=JOptionPane.showInputDialog("enter the password string");
byte[] pwb=new byte[pw.getBytes().length];
pwb=pw.getBytes();
String msg=JOptionPane.showInputDialog(null,"enter the message");
byte[] msgb=new byte[msg.getBytes().length];
msgb=msg.getBytes();
try
PBEKeySpec ks=new PBEKeySpec(pw.toCharArray());
SecretKeyFactory skf= SecretKeyFactory.getInstance("PBEWithMD5AndDES");
SecretKey ky=skf.generateSecret(ks);
MessageDigest md=MessageDigest.getInstance("MD5");
md.update("srikrishna".getBytes());byte[] digest=md.digest();
byte salt[]=new byte[8];
for(int i=0;i<8;i++)
     salt=digest[i];
PBEParameterSpec ps=new PBEParameterSpec(salt,20);
Cipher cf=Cipher.getInstance("PBEWithMD5AndDES");
cf.init(Cipher.ENCRYPT_MODE,ky,ps);
byte[]thCp=cf.doFinal(msgb);
for(int i=0;i<thCp.length;i++)
     System.out.print((char)thCp[i]);
System.out.println("\n\n");
String pwbs=JOptionPane.showInputDialog("enter the password string");
byte[] pwbsb=new byte[pwbs.getBytes().length];
pwbsb=pwbs.getBytes();
PBEKeySpec ks1=new PBEKeySpec(pwbs.toCharArray());
SecretKeyFactory skf1= SecretKeyFactory.getInstance("PBEWithMD5AndDES");
SecretKey ky1=skf1.generateSecret(ks1);
MessageDigest md1=MessageDigest.getInstance("MD5");
md1.update("srikrishna".getBytes());byte[] digest1=md1.digest();
byte salt1[]=new byte[8];
for(int i=0;i<8;i++)
     salt1[i]=digest1[i];
PBEParameterSpec ps1=new PBEParameterSpec(salt1,20);
Cipher cf1=Cipher.getInstance("PBEWithMD5AndDES");
cf1.init(Cipher.DECRYPT_MODE, ky1,ps1);
byte[]thPt=cf1.doFinal(thCp);
for(int i=0;i<thPt.length;i++)
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catch(Exception e)
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Thanks in Advance.............
Edited by: hareksna on Jan 12, 2009 4:36 PM

hareksna wrote:
sir, thanks for reply.........
I understood .....
sorry if am asking u once again.......
for every encrypted data there will be an corresponding decrypted data.........even with the different key.....it shud produce some decrypted bytes.(even diff from plain text)......naa.....i.e it should produce the wrong plain text.......The encyption process -
cleartext (adding padding) padded cleartext (encrypting) ciphertext.
The decryption process -
ciphertext (decrypting) padded cleartext (remove padding) cleartext.
Even though it would be gibberish when the wrong key is used, you seem to want access to the 'padded cleartext' but using your code you do not have access to it. You could emulate the PBE process and get access to the 'padded cleartext' but what would be the point. You would just have gibberish when using the wrong key.
but y the exception......
ok ......and also tell me y this BPE is actually happens and how to avoid that when we use some padding.....
plz tell me the reason.............Start by reading "Applied Cryptography"by Bruce Schneier and then "Practical Cryptography" by Ferguson and Schneier.
>
so finally .........
u r saying that i need to catch the BPE and should inform client that he entered wrong password........
so i have to end up in the second step itself.....
is there any other way to perfom this one?......if there, plz let me know....if any alternative.....As I said earlier, the alternative is to emulate the PBE process yourself but what would be the point. You would just end up with gibberish if you use the wrong password.
P.S. You won't always get a bad padding exception if you use the wrong password. About 1in 256 you will just get gibberish as the result without the exception.
P.P.S. Your keyboard seems to have a problem with it's '.' key. In your place I would get it fixed because the perpetual '......' annoys the hell out of many people who respond to these forums.
P.P.P.S. Your 'caps' key seems to be intermittently broken. Please get if fixed.
P.P.P.P.S. You should turn off your computer's SMS mode. Using 'u' instead of 'you' makes your posts very difficult to read and it annoys the hell out of many people who respond to these forums.

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Lightdm hangs with wrong password

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