Hi,
I'm using PHP 4.4.4. An odd thing is happening with the
mcrypt_encrypt function. I am trying to encrypt a string of data (for
password storage):
$enc = mcrypt_encrypt( MCRYPT_XTEA, ENCRYPTION_KEY, $p_str,
MCRYPT_MODE_ECB , $iv);
and then I'm trying to log in later by encrypting the entered password
and comparing it to the saved password. However, despite the fact
that for each call, the inputs are the same,
MCRYPT_XTEA = "xtea";
ENCRYPTION_KEY = "sdlk2kcow8doq9 2k";
$p_str = "demo";
MCRYPT_MODE_ECB = "ecb";
$iv = "jX%ukØ*=";
on one call I get the encrypted string, "ë;jéøÕG·" and on the other
call, I get "ø34Avýä". What gives?
Thanks, - Dave
45  3838  la***********@z ipmail.com wrote:
Hi,
I'm using PHP 4.4.4. An odd thing is happening with the
mcrypt_encrypt function. I am trying to encrypt a string of data (for
password storage):
$enc = mcrypt_encrypt( MCRYPT_XTEA, ENCRYPTION_KEY, $p_str,
MCRYPT_MODE_ECB , $iv);
and then I'm trying to log in later by encrypting the entered password
and comparing it to the saved password. However, despite the fact
that for each call, the inputs are the same,
MCRYPT_XTEA = "xtea";
ENCRYPTION_KEY = "sdlk2kcow8doq9 2k";
$p_str = "demo";
MCRYPT_MODE_ECB = "ecb";
$iv = "jX%ukØ*=";
on one call I get the encrypted string, "ë;jéøÕG·" and on the other
call, I get "ø34Avýä". What gives?
Thanks, - Dave
Dave,
I hate to state the obvious, but obviously there is something different
between the two. mcrypt_encrypt gives the same output for the same input.
Look for differences in capitalization, '1' (one) instead of 'l' (lower
case ell) or 'I' (upper case eye), for instance. It's very easy to do.
--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp. js*******@attgl obal.net
=============== ===
well, not necesarily. Maybe it's a chain cypher - and he's not
re-initializing.
Although his code sample does say ECB, I don't know what the parameters
mean for this extension function anyway.
On Mon, 01 Oct 2007 23:20:14 -0400, Jerry Stuckle <js*******@attg lobal.net>
wrote:
>la***********@ zipmail.com wrote:
>>
on one call I get the encrypted string, "ë;jéøÕG·" and on the other
call, I get "ø34Avýä". What gives?
Thanks, - Dave
>I hate to state the obvious, but obviously there is something different
between the two. mcrypt_encrypt gives the same output for the same input.
Look for differences in capitalization, '1' (one) instead of 'l' (lower
case ell) or 'I' (upper case eye), for instance. It's very easy to do.
Mtr wrote:
On Mon, 01 Oct 2007 23:20:14 -0400, Jerry Stuckle <js*******@attg lobal.net>
wrote:
>la***********@z ipmail.com wrote:
>>on one call I get the encrypted string, "ë;jéøÕG·" and on the other
call, I get "ø34Avýä". What gives?
Thanks, - Dave
>I hate to state the obvious, but obviously there is something different
between the two. mcrypt_encrypt gives the same output for the same input.
Look for differences in capitalization, '1' (one) instead of 'l' (lower
case ell) or 'I' (upper case eye), for instance. It's very easy to do.
well, not necesarily. Maybe it's a chain cypher - and he's not
re-initializing.
Although his code sample does say ECB, I don't know what the parameters
mean for this extension function anyway.
(top posting fixed)
Your posting makes no sense whatsoever. Did you actually try the code?
If it were a chain cipher, you would have to follow the same chain to
decrypt. And a quick test of the code would have shown you this is not
a chain cipher.
Also, please don't top post. Thanks.
--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp. js*******@attgl obal.net
=============== ===
not to be overly contentious, but it is pretentious to insist on bottom
posting. All you are saying is that you want people to post in a way that
is better for you, in the way that you read newsgroups. But if I read a
thread all at once (since I am apt to read a group maybe once a week or so)
then bottom posting is a burden because of all the needless scrolling. If I
read only one newsgroup per day, then all that downward scrolling is an
unnecesary burden, too. I don't need to be refreshed on the topic because
I'm not reading many groups every day. Also, anyone reading a thread on
google groups would find the same thing - endless scrolling past old words
to get to the new words.
If you are trying to make the newsgroup more readable, then you would be
better off trying to get people to trim their replies. Your post in the
Lite Encryption thread is a good example of what not to do: over two
hundred lines of quoting to add a very few lines of new reply.
However, I appreciate your politeness.
On Tue, 02 Oct 2007 06:58:58 -0400, Jerry Stuckle <js*******@attg lobal.net>
wrote:
>
Also, please don't top post. Thanks.
..oO(Mtr)
>not to be overly contentious, but it is pretentious to insist on bottom
posting. All you are saying is that you want people to post in a way that
is better for you, in the way that you read newsgroups.
It's not only for him. It's the way that's better for _most_ regulars in
the newsgroups.
>But if I read a
thread all at once (since I am apt to read a group maybe once a week or so)
then bottom posting is a burden because of all the needless scrolling.
Of course quoting two hundred lines and then just adding a "me too" is
pointless. But quoting a question or statement and then putting an
answer below it is the most efficient way, especially if you're replying
to many different parts or questions of a post.
>If I
read only one newsgroup per day, then all that downward scrolling is an
unnecesary burden, too. I don't need to be refreshed on the topic because
I'm not reading many groups every day. Also, anyone reading a thread on
google groups would find the same thing - endless scrolling past old words
to get to the new words.
Google Groups just sucks. That's not Usenet.
>If you are trying to make the newsgroup more readable, then you would be
better off trying to get people to trim their replies.
ACK
That's as important as putting an answer _below_ the question.
Micha
On Tue, 02 Oct 2007 06:58:58 -0400, Jerry Stuckle <js*******@attg lobal.net>
wrote:
>Mtr wrote:
>On Mon, 01 Oct 2007 23:20:14 -0400, Jerry Stuckle <js*******@attg lobal.net>
wrote:
>>la***********@z ipmail.com wrote:
>>>on one call I get the encrypted string, "ë;jéøÕG·" and on the other
call, I get "ø34Avýä". What gives?
Thanks, - Dave
>>I hate to state the obvious, but obviously there is something different
between the two. mcrypt_encrypt gives the same output for the same input.
Look for differences in capitalization, '1' (one) instead of 'l' (lower
case ell) or 'I' (upper case eye), for instance. It's very easy to do.
well, not necesarily. Maybe it's a chain cypher - and he's not
re-initializing.
Although his code sample does say ECB, I don't know what the parameters
mean for this extension function anyway.
(top posting fixed)
Your posting makes no sense whatsoever. Did you actually try the code?
no, that's why I deliberately used the word "maybe" in my suggestion. No
one else had replied, so I offered a possible suggestion.
>
If it were a chain cipher, you would have to follow the same chain to
decrypt.
He never mentioned decryption in his post, only the diffrent results of
encryption.
>And a quick test of the code would have shown you this is not
a chain cipher.
no, now you're the one who is making no sense. Whether or not it is chained
is internal to the cipher, not to the code that calls it. The difference
would also be apparent (via knowledge of the parameters) if I were a user
of that crypto extension, which I'm not. That's why I also deliberately
said that I don't know what the parameters mean. But the use of ECB does
tend to say it's not chained - which I also deliberately mentioned.
>
Also, please don't top post. Thanks.
do you know that some people get irritated over interleaved replies, too?
On Tue, 02 Oct 2007 16:56:36 +0200, "Rik Wasmus"
<lu************ @hotmail.comwro te:
>
It is quite arrogant to insist to know better then a usenet practise that
has evolved en been followed for years and years.
and once upon a time, people rode horses. Saying "it was always done that
way" is not a valid argument. Once upon a time, people were told to lurk
for days or weeks to get aquainted before making a first post. Or people
were routinely told to RTFM.
>Contrary to online
forums, usenet is not on a single server, but thousands of them. Wether or
not other people seeing your reply to a group can see the original message
you are replying to is not something you can rely on.
which is irrelevant as to whether top or bottom posting should be used.
Once again, you are merely claiming that things should be *your* way.
..oO(Mtr)
>On Tue, 02 Oct 2007 06:58:58 -0400, Jerry Stuckle <js*******@attg lobal.net>
>>
Also, please don't top post. Thanks.
do you know that some people get irritated over interleaved replies, too?
Only Usenet newbies, if any. But most people are able to learn.
Micha
--
Rik Wasmus
It is not *my* way. It's the general concensus sparing a few individuals
who are arrogant anough to claim to know better.
Once again, you are merely claiming that things should be *your* way.
Have you ever tried to read of bottom-up conversation when you have no
previous posts? It's not that easy to follow, at least not that quickly.
Scrolling to the new parts of a post (which many newsreaders do
automagically) however is simple. BTW: claiming something is kludgy in
Google Groups isn't an argument either. Complain to the people making that
horrendous interface.
which is irrelevant as to whether top or bottom posting should be used.
>Contrary to online
forums, usenet is not on a single server, but thousands of them. Wether
or
not other people seeing your reply to a group can see the original
message
you are replying to is not something you can rely on.
I still often reply with just an url of the manual.
Or people
were routinely told to RTFM.
What exactly has been changed about usenet in the mean time? By all means,
you're welcome to piss off, and just use online forums as your usenet <->
internet forums, horse <-car equivalent. The practise of riding horses
(posting on usenet) hasn't changed, except for an eternal september.
and once upon a time, people rode horses. Saying "it was always done that
way" is not a valid argument.
>It is quite arrogant to insist to know better then a usenet practise
that
has evolved en been followed for years and years.
On Tue, 02 Oct 2007 16:56:36 +0200, "Rik Wasmus"
<lu************ @hotmail.comwro te:
On Tue, 02 Oct 2007 17:06:37 +0200, Mtr <Mt*@no.spamwro te:
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