RE: [PHP-DB] md5() function
Thanks every body for your replies!! It is clear to me that I can not reverse a hased string!! Thanks!!! Guirao -Original Message- From: Jason Gerfen [mailto:[EMAIL PROTECTED] Sent: Lunes, 14 de Enero de 2008 02:04 p.m. Cc: php-db@lists.php.net Subject: Re: [PHP-DB] md5() function Steven Cruz wrote: > Hello; > > I maybe wrong, but I believe it is one way. What you need to do is take > your input and encrypt it and check if matches your current encrypted > value. :) > > peace and hugs. > > Miguel Guirao wrote: >> Hi!! >> >> I'm using the md5() function to encrypt a password and store it into a >> database. Now I want to retrieve that MD5 password and convert it into >> it's >> human readable condition. >> Is there a function opposite to md5()?? >> >> Best Regards, >> >> M Guirao >> >> > If you want to do a comparison on the md5() hash you just created you could always run your SQL query like: SELECT * FROM `table` WHERE `password` = md5( $password ) LIMIT 1; That will return a true or false value based on the md5() hash of the $password var. But you cannot reverse the md5 hash to obtain the original value unless you perform a crack on it using software available software. I think what you are looking for is the base64_encode() and base64_decode() functions which will perform a simple encoding of data. -- Jason Gerfen "I practice my religion while stepping on your toes..." ~The Ditty Bops -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP-DB] md5() function
Steven Cruz wrote: > Hello; > > I maybe wrong, but I believe it is one way. What you need to do is take > your input and encrypt it and check if matches your current encrypted > value. :) > > peace and hugs. > > Miguel Guirao wrote: >> Hi!! >> >> I'm using the md5() function to encrypt a password and store it into a >> database. Now I want to retrieve that MD5 password and convert it into >> it's >> human readable condition. >> Is there a function opposite to md5()?? >> >> Best Regards, >> >> M Guirao >> >> > If you want to do a comparison on the md5() hash you just created you could always run your SQL query like: SELECT * FROM `table` WHERE `password` = md5( $password ) LIMIT 1; That will return a true or false value based on the md5() hash of the $password var. But you cannot reverse the md5 hash to obtain the original value unless you perform a crack on it using software available software. I think what you are looking for is the base64_encode() and base64_decode() functions which will perform a simple encoding of data. -- Jason Gerfen "I practice my religion while stepping on your toes..." ~The Ditty Bops -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP-DB] md5() function
On Jan 14, 2008 2:26 PM, Miguel Guirao <[EMAIL PROTECTED]> wrote: > Hi!! > > I'm using the md5() function to encrypt a password and store it into a > database. Now I want to retrieve that MD5 password and convert it into it's > human readable condition. > Is there a function opposite to md5()?? Negative. Once it's hashed with an MD5, SHA1, or similar encryption method, it's (as of now) impossible to reverse. You could create a table with a column of unencrypted phrases, characters, and combinations, with a second column containing the correlating hashed string, but that's about it. -- Daniel P. Brown Senior Unix Geek and #1 Rated "Year's Coolest Guy" By Self Since Nineteen-Seventy-[mumble]. -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP-DB] md5() function
MD5 is also known as an one-way crypt system; you can encryptit but never unencrypted; only using brute force or a hash list you can retrive a 'string' that it's hash is the one stored; but it is not necesary the same original string; this is also known as a hash collision. So, in short... no, there isn't a unMd5(). If you need to retrive the original string, try GPG. On 14/01/2008, Miguel Guirao <[EMAIL PROTECTED]> wrote: > Hi!! > > I'm using the md5() function to encrypt a password and store it into a > database. Now I want to retrieve that MD5 password and convert it into it's > human readable condition. > Is there a function opposite to md5()?? > > Best Regards, > > M Guirao > > -- > PHP Database Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > > -- Atte, Andrés G. Montañez Técnico en Redes y Telecomunicaciones Montevideo - Uruguay -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP-DB] md5() function
Hello; I maybe wrong, but I believe it is one way. What you need to do is take your input and encrypt it and check if matches your current encrypted value. :) peace and hugs. Miguel Guirao wrote: Hi!! I'm using the md5() function to encrypt a password and store it into a database. Now I want to retrieve that MD5 password and convert it into it's human readable condition. Is there a function opposite to md5()?? Best Regards, M Guirao -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP-DB] md5() function
Hi!! I'm using the md5() function to encrypt a password and store it into a database. Now I want to retrieve that MD5 password and convert it into it's human readable condition. Is there a function opposite to md5()?? Best Regards, M Guirao -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
