Decode A Sha1 Encryption

Jan 7, 2007

I decided to sha1 passwords into the database for the creation of a user account. When logging into the system, this sql statement works, but I can't figure out how to reverse it, so I'm assuming this is a one-way encryption: PHP Code:

$sql = "SELECT email, password, first
††††††††††††††††FROM `account`
††††††††††††††††WHERE `email` = '" . addslashes(htmlspecialchars($AdminID)) . "'
††††††††††††††††AND
††††††††††††††††`password` = '" . sha1(addslashes(htmlspecialchars($AdminPswd))) . "'";

I need to have a statement to retrieve the encryption and decode it for password retrieval (when a user lost their password). Is there a way to decode this or should I choose another encryption technique (2-way) other than the basic base64_decode/base64_encode?

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How To Decode A Sha1 Url In Noramal Url

Jun 25, 2007

I want to know to decode sha1 encoded url into normal url.

Example:
www.example.com/<sha1 code>/index1.htm

I want this to:
www.example.com/index1.htm

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Security - Custom Sha1+salt Pass Decode?

May 25, 2011

my answer was answered about password protection(php users passwords protection) and my final code:

function sha1_custom($string) {
$salt = sha1("1".$string."1");
[code]....

Let's say for strongest security, I want to encrypt IP, signup date, just everything. But in admin panel I want to retrieve that info, so it means I need decript itIs it possible from this script/function to make a decrypt script/function?

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Encryption - Use Sha1 Or Others Version Of Sha?

Jul 24, 2009

I am going to generate a random password for my users. Probably I will use salt and sha1 method. But I found that there are other version of sha1, like sha256, sha512 etc.

What is the differences between the sha versions? Which one better, more secure, and faster (performances)? Which one should I use?

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Logging In With Sha1() Encryption?

Jan 12, 2011

I added this to my sign up code :

$password=mysql_real_escape_string(sha1($_POST['password']));

and now it inserts the password into the database while its encrypted. But signing in doesn't seem to work anymore. Here is the login code.

function checklogin($username, $password){
global $mysqli;
$password=sha1($password);

[code]....

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Encryption - Inserting Data Into A Database Using SHA1

Dec 9, 2005

Another n00b question but when inserting data into a database using SHA1 do you need to do this: PHP Code:

INSERT INTO $table (`password`)
VALUES([b]'sha1($_POST['password'])'[/b]);

or something like that, and when retrieving from it: PHP Code:

SELECT * FROM $table WHERE sha1($_POST['password']);

Or can you just got $_POST['password']
Sorry I dont know how this works. Also what is a snippet for salting a sha1 command.

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Encryption - Decode A Script Encoded With 'zend Guard'?

Nov 28, 2010

We have a website maintained by an old employee and it appears it's encoded by Zend Guard including all backups.I know a little about Zend Optimizer, but never considered it for source protection as I know in the end the bytecode will need to be decoded for the interpreter, and was sure people easily decode optimized files using some software. Now I need to decode some files and I can't find anything but some 'paid services'. We have the ownership of the code and are locked out now for any changes and debugging. How can I decode our files back?

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Difference In CodeIgniter Sha1 And Normal Sha1?

Jun 15, 2011

What is difference in CodeIgniter sha1 and normal PHP sha1? For example:

$codeigniter_hashed = $this -> encrypt -> sha1( "test" );

And

$normal_hashed = sha1("test");

Both will return same values. Where does CodeIgniter uses encryption_key?

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May 5, 2011

How can I decode these kind of chars? I have tried many functions and they did not work. Here is a printscreen of the chars:

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MD5() And SHA1()

Oct 26, 2005

I realise that both these functions encrypt to a hash of 32 and 40 chars respectively and see the SHA1() is more crytographically secure than MD5() but in the real world just how secure are they? Can they be hacked? I.e on my site what I want to do is protect both user and pw BEFORE calling a MySQL stored procedure which will then do something else to them in the Db.

My idea is that then it is secured during and after transit from web server to Db. So if I say SHA1'd user and pw(making sure the password is a alphanumeric string) before calling MySQL, if someone picked them up using a sniffer etc could they work them out?

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Sep 1, 2005

The manual doesn't say which is better. But someone's comments in md5 chapter suggest sha1 is better. Any expert opinions? Should I use sha1 instead of md5?

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Md5 And Sha1

Aug 7, 2007

I'm building a registration/login script:

$result = "insert into users (username, password, email) values ('$username', sha1('$password'), '$email')";

I've tested this out by submitting (username1, password1) and (username2, password2) Both "password1" and "password2" are encrypted to the same string:

da39a3ee5e6b4b0d3255bfef95601890afd80709 or d41d8cd98f00b204e9800998ecf8427e to be exact....it doesn't matter what I use for the password

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MD5 Encryption Compatibilty With C # Encryption?

Dec 13, 2010

I am in the process of try to integrate some C# ASP.NET webservice into my PHP application however there is a big problem. The way the C# webservice does the encryption is not compatible with the way PHP does the MD5 encryption. I have found solution for converting the C# MD5 to PHP MD5 however I can't change the C# code. Is there a way to change the way that PHP does its MD5 encryption to match C#? The c# encryption works like this:

MD5CryptoServiceProvider MD5 = new MD5CryptoServiceProvider();
byte[] bs = System.Text.Encoding.UTF8.GetBytes(stringToEncrypt);
String myString = Convert.ToBase64String(MD5.ComputeHash(bs));

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MD5 Encryption Gives Wrong Encryption?

Mar 23, 2011

I have a registration script.At the script your password will be md5-encrypted and stored into the database.When you login the script md5-encrypts the password you type to login and checks if it is the correct one. For example I use the password: robin123
The registration md5-encrypts it as: 8dd1635ff2b8c9319526
The login-script md5-encrypts it as: 8dd1635ff2b8c931952663d4922956e7
[code...]

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Sha1 Implementation

Oct 31, 2005

I've experienced a vary strange problem working with PHP and payment gateways. If I use the sha1 function for some string I get the encrypted string, but this function output is different from the one I get using openssl on the command line of a linux machine. Ex:

inside a php I write: sha1("12345")
in the command line I type: echo 12345 ¦ openssl sha1

The output of both functions is different. However, if I store the string 12345 in a somefile.txt and I use sha1_file() function the result is the same as the standard expects, so following the previous example, when I write:

inside a php: sha1_file("somefile.txt")
in the command line I type: echo 12345 ¦ openssl sha1

The output of both functions is the same. Anybody knows if this behaviour is normal, and if it is what's it obeying to?

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Sha1 Error

Nov 28, 2007

To get the password from the database i use this:

$password2 = sha1(strip_tags($_POST['user_password'])); echo "password";

i change it so if i was adding to the database? Because when i add a new password its differnt to what it would be if im getting from the database.

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MD5 VS SHA1 VS AES_ENCRYPT?

Oct 20, 2007

I've been reading up on password encryption and I've always used MD5 but seems like its not very secure any more, so now am wondering what's better MD5 VS SHA1 VS AES_ENCRYPT?

AES_ENCRYPT seems like a secure way to encrypt passwords but being able to decrypt them seems a bit cautious. Any one any thought of the best way to encrypt passwords?

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Md5 / Sha1 - Any Real Difference?

Jul 16, 2005

I use md5 hash with some of my cookies and occassionally a hidden form
field - I know the physical data on my network is insecure (unless being
served via https) but I was wondering if there are any advantages to using
md5 over sha1 or versa vicea... I know md5 gives me a unique 32bit hash
while sha1 I've read is 'secure' (?) and gives a 40bit hash... Since The
technical webpage on sha1 is lengthy and for the most part over my head...
and other than today, I've never heard of it before... I was wondering if
anyone could offer any comments on it...

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Max Input Size SHA1

Aug 6, 2007

Is there a maximum input size for SHA1? Or can I input even 1000 characters and still get a different output than if I input 999?

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Converting Sha1() To String

Feb 21, 2006

I generated sha1() string in order to store a password in the table. But i want to know how to retrive back the original password as a normal string in order to send the password to the users who have submitted the forgotten request. I want to know is there any function that i can retireve the password in normal string form.

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Sha1 Column Type

Jun 26, 2006

I have read several online tutorials advocating storing a sha1() hashed
password in a column of type BLOB. As far as I can tell, sha1() always
returns a string of 40 characters, regardless of the size of the
original input. Is there any reason I can't store this as type CHAR? I
am running MySQL 4.1.x.

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User Authentication (Using Sha1)?

Sep 19, 2010

I am creating a login form. I am learning how to use SHA-1 to encrypt passwords. I used SHA-1 to encrypt the password that the user created during registration. In the database I inputted pretend username and password data, to have something to work with. I'm having problems getting my login form to work.

// Database Connection
$con = getConnection();
$sqlQuery = mysql_query("SELECT count(*) from Customers
[code]....

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Reset Password Thats Sha1?

Jun 14, 2011

I am creating users via a registration form, that when submitted, has made the password a sha1.
Registration script:

if($_POST['pass1']==$_POST['pass2']){
$password = sha1(mysqli_real_escape_string($connection, $_POST['pass1']));
}

[code]...

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Best Way To Encrypt Passwords - Md5 - Sha1 Or Others?

Jan 10, 2011

I've been doing basic programing and learning and I read somewhere that md5 is not secure that someone can do a brute and get the hash opened up. Is this correct? What would be the best method to encrypt a password in a login system? md5, sha1, I read something about SALT but have no idea what that means.

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Is It Impossible To Decrypt MD5 And SHA1?

Nov 10, 2007

Everyone in the PHP world knows its impossible to decrypt MD5 and SHA1 But A site has done it! But how? http://md5encryption.com/?mod=decrypt

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Sha1() Passwd In Mysql Help... (beginner)

Mar 26, 2007

For a log-in page I have created a mysql db and user registers
with a user name and password. The password field is encrypted with

$passwd = sha1($_REQUEST['passwd']);

I insert the $passwd in mysql_insert. The password gets
encrypted and stored in mysql. Now I want to check if the user has
entered the correct password when he logs in. How can I do that.

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Sha1() Undefined Function Error

May 22, 2007

I am using sha1 function for passwords as in the code below.

$uid=sha1($cols['pword']);

And I am getting this error;
Fatal error: Call to undefined function: sha1() in c:phpdevwwwalaskanerrandslogin.php on line 8

What's up with that?

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Java - Generate HMAC-SHA1 In C#?

May 20, 2011

I am trying to make use of a REST API using C#. The API creator has provided sample libraries in PHP, Ruby and Java. I am getting hung up on one part of it where I need to generate an HMAC.

Here's how it is done in the sample libraries they have provided.

PHP
hash_hmac('sha1', $signatureString, $secretKey, false);
Ruby
digest = OpenSSL::Digest::Digest.new('sha1')
return OpenSSL::HMAC.hexdigest(digest, secretKey, signatureString)
Java.............

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Converting SHA1 To Normal Form?

Dec 2, 2010

I have a database where every password is passed via SHA1. Sometimes, I want to go to the users dashboard and look how it feels like. Is there a way, I could convert SHA1 to normal form just for testing purposes?

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Generating SignatureValue Using HMAC-SHA1 In XML?

Oct 21, 2010

The signature method is HMAC-SHA1, and I already have <SignedInfo> generated. The problem is that I am not sure what to use as the key in the HMAC calculation.

I noticed that there are two <Entropy> with enclosing <BinarySecret> from the initial request (RST) and response (RSTR). I read from WS-Trust that this indicates that I could generate a proof key using these two binary values from the <BinarySecret> and PSHA1 as specified in <ComputeKey> tag from the response. However, I could never get the same signature value as the one in the sample from the service provider.

As an example:

The binary secret from RST is
grrlUUfhuNwlvQzQ4bV6TT3wA8ieZPltIf4+H7nIvCE=
The binary secret from RSTR is[code].....

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Creating A Database Table With SHA1?

Oct 17, 2010

The question right now is about how to create a table with PHP that will enable SHA1 hashing without requiring me to log in to phpMyAdmin and select it from the drop down. what I'm asking is can the SHA1 be written as part of a PHP table creation script?

Here's what I've tried.

$sql = "CREATE TABLE Members
(
mem_id int(3) NOT NULL AUTO_INCREMENT,
mem_username varchar(12) NOT NULL UNIQUE,
mem_password md5(varchar(12))
)

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Best Implementation Of RFC 2104 HMAC-SHA1?

Jan 12, 2011

What is the best implementation of RFC 2104 HMAC-SHA1 alg. in php?I have read http://us2.php.net/manual/en/function.hash-hmac.php but when I try them I getdifferent results.

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SHA1 And A Register/login File.

Nov 25, 2007

I am getting a couple of errors with a register/login file for a site.

Apache version†††1.3.39 (Unix)
PHP version†† †5.2.4
MySQL version†† †5.0.27-standard

I added the SHA1 encryption for the passwords, but not, even thought it encrypts, the email column in the MYSQL database does not appear. Meaning there must be another way to encrypt the password properly in the file.

Second problem is that the file keeps inserting blank columns into the table of USERS - i.e without any information - so instead of telling me exactly how many users I have, it has like an extra 50 rows of blank info. So something is wrong on the insertion. Code:

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Encrypt Passwords For The Database Use SHA1

Jul 22, 2007

Would it be safer if you were to like instead of just using SHA1 to encrypt passwords for the database use SHA1 and cut 2 numbers off the back of the string and add the front two or somin like that? Code:

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Hashing Functions Like Sha1 Use Only Up To 16 Different Char (hexadecimal)?

Jun 2, 2011

sha1 use [a-f0-9] chars for its hashing function.May I know why it doens't use all the chars possible [a-z0-9] by using all chars availabe it could grealty increase the number of possibile different hash, thus lowering the probabilty of possibile collision.

If you don't think this is a real question, just leave a comment I will instantly delete this question.As stated in the answer, sha1 does NOT uses only 16 chars. The correct fact is: sha1 is 160 bits of binary data (cit.).I have added this to prevent confusion.

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Oct 9, 2010

After knowing that hashing a password is my choice for making a login form. Now I am facing another issue - sha1, sha256 or sha512? This is a standard method using salt I think I got it from a reference book of mine,

# create a salt using the current timestamp
$salt = time();
# encrypt the password and salt with SHA1
$usr_password = sha1($usr_password.$salt);

but then after I have done some research on sha1, it was told it may not be so secure in the future, suggesting using hash().

But I don't quite understand using hash() - for instance - $usr_password = hash('sha256', $usr_password);

what is that 'sha256' or 'sha512' which I found it here?[URL]..can I put anything instead, like '@123'?

why is it called salt anyway - $salt = time(); is nothing else but just a unix timestamp isn't it?

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Create HMAC SHA1 Strings Like Objective C?

Dec 23, 2010

I am trying to implement an authentication solution with PHP and Objective-C. Both languages create their own HMAC-SHA1 encoded strings with the same key and the same secret. Apparently they seem to differ in their way how they do it. On Objective-C side I am using OAuthCustomer as signing class which produces the correct looking encoded string: /3n/d4sKN6k3I7nBm1qau59UukU= On PHP side I am using the built-in function hash_hmac('sha1',...) with base64 encoding which produces this:ZmY3OWZmNzc4YjBhMzdhOTM3MjNiOWMxOWI1YTlhYmI5ZjU0YmE0NQ==

Then I have tried to use another function (mentioned here) and this produces with base64 encoding this:NWY1ODUwOWE3NGI4NWU5ZTIxMDYzMTNmNzk3NTYxMDQ4OWE1MmUzNQ== I have absolutely no idea how I can fix this issue and I don't even know why this happens.

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Aug 19, 2010

I'm trying to replicate some C# code in PHP5 and am having some difficulties.

The C# code is as following, and it is important to note that it cannot be changed:

string s = strToHash;
UnicodeEncoding encoding = new UnicodeEncoding();
byte[] bytes = encoding.GetBytes(s);
SHA1Managed managed = new SHA1Managed();
bytes = encoding.GetBytes(Convert.ToBase64String(managed.ComputeHash(bytes)) + "Space");

[Code]....

However, the two outputs don't match up. I believe this is because the SHA1 method in PHP works on ASCII encoded strings, not the encoding actually used by the passed in string.

I would like to get this to work, and I can't achieve it by altering the c# code (although no-doubt that would be the easiest fix).

OK, I have altered the code following Artefacto's advice, and it still isn't working as expected.

The PHP Code now looks like this:

[code]...

And the outputed value of this method is:

1/Y5MCzI8vDJqc456YIicpwoyy0=

However, from the C# code, the value is this:

VPf7BhT1ksAfWbzeJw35g+bVKwY=

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Apr 1, 2011

i'm trying to develope the 'forget Password module ' in my website

passwords are stored in the tables using sha1 function

now when i tried to re-send the password back to the user i thought it's easy just pass the encrypted one to sha1 function again and you'll get the decrypted one

but it fails for sure

now how can i send the user back his password ??

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Validate Signing In With Password Singed Up With After Sha1 Hash/salt?

Jan 25, 2011

I am limbo with this one. What I have makes sense to me, but I know I'm missing something or doing something wrongI have been able to hash passwords with salt by new people registering to my site by doing this:

if(!$error)†{
$alpha†=†"ABCDEFGHIJKLMNOPQRSTUVWXYZabcedfghijklmnopqrstuvwxyz1234567890";
$rand†=†str_shuffle($alpha);
$salt†=†substr($rand,0,40)
[code]........

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Jun 20, 2011

PHP's "shm_get" function requires an integer semaphore key, which I realise to be a restriction of the underlying OS.I am using the "sha1" function to hash some user input and using the hash to uniquely identify a number of resulting files and and background processes.Is there a way to convince shm_get to accept an alphanumeric key or to convert a sha1 hash to an acceptable integer?

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Jan 25, 2010

on Game.php I used AJAX to transfer a value to Scores.php which will be saved on MySql. Even a newbie programmer can change the value at his own will. I want to use Sha1 to compare if the value on Game.php is similar to the value passed on Scores.php, if they are the same then the value will be saved. Is my thinking correct?

Game.php
Code: [Select] $(document).ready(function() {
$('#bregister').click(function(){
var data = $("#f1").formToArray();
$.ajax({
type: 'POST',
url: 'page2.php',
data: data,
success: function(result){.......

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Jan 15, 2002

why there is no need to decrypt the code before use? why it can still address to the 'bob' with decryption? what is php_self mean ? PHP Code:

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Jan 22, 2007

I'm italian and i got a problem (i mean... a problem beyond the fact that i'm italian)...

I'm making a newsletter engine, nothing special, just a browser html editor (FCKEditor) on a page that sends the text to a list of emails.

Now... in email i receive something like: "&agrave;&egrave;&ograve;" when i write "è à ò".

I tried with:
- $text = utf8_encode($_POST['text']) ;
- $text = utf8_decode($_POST['text']) ;
- $text = htmlspecialchars($_POST['text'], ENT_QUOTES);

...no need to say that nothing have worked.

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Jun 22, 2007

I have a simple database that lists files and the url is sent encoded I need to use the decoded url parameters as a query with my mysql database

$unencodedP = urldecode($_REQUEST['p']);
echo "<a href='page.php?$unencodedP'>Decoded Url[/url]
";

This displays the decoded url and when i click it the results are displayed from the mysql database but i want to skip having to click it and submit the decoded url to the database Or is there a way to load the page with the decoded url and not the encoded one.

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