Re: mcrypt

Hi, Thanks for the prompt answer. But I am still getting the same error. ///////////////////////////////////////////////////// original: meet at secret place encrypted: d40d72f1b224b9bf86a7dbc52402c1d02a5cf90adb9050f0 Warning: mcrypt_generic_init: Memory allocation error in /mount/marsellus/gwolfe/puruclient/staging/vhosts/partnersdev.sec.yaga.com/h tml/time/cancelsubscription/new.php on line 29 Warning: mdecrypt_generic(): 2 is not a valid MCrypt resource in /mount/marsellus/gwolfe/puruclient/staging/vhosts/partnersdev.sec.yaga.com/h tml/time/cancelsubscription/new.php on line 30 Warning: mcrypt_generic_end(): 2 is not a valid MCrypt resource in /mount/marsellus/gwolfe/puruclient/staging/vhosts/partnersdev.sec.yaga.com/h tml/time/cancelsubscription/new.php on line 31 decrypted: /////////////////////////////////////////// Regards, Purushotham Komaravolu Software Engineer Yaga, Inc. - "advanced payment services" Direct: 415-901-7343 Fax: 415-901-1586 http://www.yaga.com ----- Original Message ----- From: "Tech Support" <jgrill@web-1hosting.net> To: "Purushotham Komaravolu" <purikk@hotmail.com> Sent: Tuesday, July 30, 2002 11:34 AM Subject: Re: [PHP] mcrypt > Rather than tease you with hints I'll give you some working code ;-) > > Documentation for practical usage of mcrypt is weak. I agree. > > <? > // crypto.inc > $key = "secret key crap"; > > function hex2bin($data) > { > $len = strlen($data); > return pack("H" . $len, $data); > } > > function encrypt($string, $key) > { > // version 2.4.x of lib mcrypt > $td = mcrypt_module_open (MCRYPT_TripleDES, "", MCRYPT_MODE_ECB, ""); > $iv = mcrypt_create_iv (mcrypt_enc_get_iv_size ($td), MCRYPT_RAND); > mcrypt_generic_init ($td, $key, $iv); > $crypted = mcrypt_generic ($td, $string); > mcrypt_generic_end ($td); > return bin2hex($crypted); > } > > function decrypt($string, $key) > { > //version 2.4.x of lib mcrypt > $string = hex2bin($string); > $td = mcrypt_module_open (MCRYPT_TripleDES, "", MCRYPT_MODE_ECB, ""); > $iv = mcrypt_create_iv (mcrypt_enc_get_iv_size ($td), MCRYPT_RAND); > mcrypt_generic_init ($td, $key, $iv); > $decrypted = mdecrypt_generic ($td, $string); > mcrypt_generic_end ($td); > return trim($decrypted); > } > ?> > > > usage: > <? > include ("path/to/crypto.inc"); > $secret = "meet at secret place"; > $encrypted = encrypt($secret, $key); > print "original: " . $secret . "<br>"; > print "encrypted: " . $encrypted . "<br>"; > $decrypted = decrypt($encrypted, $key); > print "decrypted: " . $decrypted . "<br>"; > ?> > > Note: if you are encrypting really secret crap like credit card numbers or > something of that nature then NEVER include the key anywhere in your code. > Make a form where you have to type it in or something in order to display > the results. > > > Jim Grill > Support > Web-1 Hosting > http://www.web-1hosting.net > ----- Original Message ----- > From: "Purushotham Komaravolu" <purikk@hotmail.com> > To: <php-general@lists.php.net>; <php-dev@lists.php.net> > Sent: Tuesday, July 30, 2002 12:52 PM > Subject: [PHP] mcrypt > > > Hello, > I am getting some odd errors trying to get an encrypt/decrypt > process to > work. Looking at the manual examples and some other literature, I have > tried > the two approaches listed below. For each, I get a sometimes-works, > sometimes fails result. The manual entry has a string of user notes > with > problem like mine, but I still have problems. > > > > Server API Apache > > > > mcrypt > mcrypt support enabled > version 2.4.x > Supported ciphers twofish rijndael-128 rijndael-192 rijndael-256 > saferplus rc2 xtea serpent safer-sk64 safer-sk128 cast-256 loki97 gost > threeway cast-128 des tripledes enigma arcfour panama wake > Supported modes ofb cfb nofb cbc ecb stream > > > --] > > > > The first attempt used the following code: > > > --> > <?php > $key = "this is a secret key"; > $input = "Let us meet at 9 o'clock at the secret place."; > > > $td = mcrypt_module_open ('tripledes', '', 'ecb', > ''); > $iv = mcrypt_create_iv (mcrypt_enc_get_iv_size ($td), > MCRYPT_RAND); > mcrypt_generic_init ($td, $key, $iv); > $encrypted_data = mcrypt_generic ($td, $input); > $decrypted_data = mdecrypt_generic ($td, $encrypted_data); > mcrypt_generic_end ($td); > > > echo "key: > > $key<br>input:$input<br>encrypted:$encrypted_data<br>decrypted:$decrypted_da > ta"; > ?> > --] > > > This resulted, at first, in "key: this is a secret key > input:Let us meet at 9 o'clock at the secret place. > encrypted:\ºþêTÏ'áz(v¹FýaõFËU³æç SäÇÚÖzßù5Qì<±_T-:Í > decrypted:Let us meet at 9 o'clock at the secret place." > > > BUT after I refreshed/reloaded a couple of times, I got this: > "Warning: > mcrypt_generic_init: Memory allocation error in > /home/pndrdrm001/www/administrator/crypt.php on line 64 > > > Warning: 1 is not a valid MCrypt resource in > /home/pndrdrm001/www/administrator/crypt.php on line 65 > > > Warning: 1 is not a valid MCrypt resource in > /home/pndrdrm001/www/administrator/crypt.php on line 66 > > > Warning: 1 is not a valid MCrypt resource in > /home/pndrdrm001/www/administrator/crypt.php on line 67 > key: this is a secret key > input:Let us meet at 9 o'clock at the secret place. > encrypted: > decrypted: " > > > There were no changes to the code. > > > > The second try used the following: > > > In file 1, the functions: > --> > <?php > > > function my_encrypt($sString) > { > GLOBAL $sCryptoKey; > > > $iIV = mcrypt_create_iv (mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, > MCRYPT_MODE_ECB), MCRYPT_RAND); > > > $sEncrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $sCryptoKey, > $sString, > MCRYPT_MODE_ECB, $iIV); > > > return($sEncrypted); > } // End function my_encrypt > > > function my_decrypt($sString) > { > GLOBAL $sCryptoKey; > > > $iIV = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, > MCRYPT_MODE_ECB), MCRYPT_RAND); > > > $sDecrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $sCryptoKey, > $sString, > MCRYPT_MODE_ECB, $iIV); > > > return(trim($sDecrypted)); > > > } // End function my_decrypt > ?> > --] > and in file 2, the main page: > --> > <?php > include "cryption.php"; > $sCryptoKey = "key"; > $input = "test"; > $encrypted = my_encrypt($input); > $decrypted = my_decrypt($encrypted); > > > echo "key: > > $sCryptoKey<br>input:$input<br>encrypted:$encrypted<br>decrypted:$decrypted" > ; > > > > ?> > --] > > > This resulted in "key: key > input:test > encrypted: &foUÝø§ª~RM¡°Kz à¼O¼¿rw"x@nÉ > decrypted:test " the first time, but then I got "Fatal error: > generic_init > failed in /home/pndrdrm001/www/administrator/cryption.php on line 9" > on the > second refresh. > > > > Is there a missing call to free resources, or something? What can be > done? > > > Thanks! > Regards, > > Puru >