Re: [PHP] attempt to use an empty IV with mcrypt

2001-02-05 Thread Christian Reiniger 

On Monday 05 February 2001 06:13, [EMAIL PROTECTED] wrote:
 I get the following warning when I turn on logging...


 Warning: attempt to use an empty IV, which is NOT recommend in
 /home/local/apache/htdocs/encrypt.php on line 21


 Here is the code

and which line is Nr. 21?

 $key = "testing";
 $input = "Secret data";

 $encrypted_data = mcrypt_ecb (MCRYPT_DES, $key, $input,
 MCRYPT_ENCRYPT);

 print "The CypherText in DES ECB is BR".bin2hex
 ($encrypted_data)."\nbr";


 $encrypted_data = mcrypt_ecb (MCRYPT_TWOFISH, $key, $input,
 MCRYPT_ENCRYPT);

 print "The CypherText in TWOFISH ECB is BR".bin2hex
 ($encrypted_data)."\nbr";

 $encrypted_data = mcrypt_cbc (MCRYPT_TWOFISH, $key, $input,
 MCRYPT_ENCRYPT);

 print "The CypherText in TWOFISH CBC is BR".bin2hex
 ($encrypted_data)."\nbr";

 ?

-- 
Christian Reiniger
LGDC Webmaster (http://sunsite.dk/lgdc/)

Pretty cool, the kind of power information technology puts in our hands
these days.

- Securityfocus on probing 3600 hosts for known problems in 3 weeks

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[PHP] attempt to use an empty IV with mcrypt

2001-02-04 Thread twm139 

I get the following warning when I turn on logging...


Warning: attempt to use an empty IV, which is NOT recommend in
/home/local/apache/htdocs/encrypt.php on line 21


Here is the code


$key = "testing";
$input = "Secret data";

$encrypted_data = mcrypt_ecb (MCRYPT_DES, $key, $input, MCRYPT_ENCRYPT);

print "The CypherText in DES ECB is BR".bin2hex
($encrypted_data)."\nbr";


$encrypted_data = mcrypt_ecb (MCRYPT_TWOFISH, $key, $input,
MCRYPT_ENCRYPT);

print "The CypherText in TWOFISH ECB is BR".bin2hex
($encrypted_data)."\nbr";

$encrypted_data = mcrypt_cbc (MCRYPT_TWOFISH, $key, $input,
MCRYPT_ENCRYPT);

print "The CypherText in TWOFISH CBC is BR".bin2hex
($encrypted_data)."\nbr";

?

How do I prevent this error?

Regards

Terrence


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