note 26574 modified in ref.mcrypt by derick

From: Date: Fri, 25 Apr 2003 19:11:39 +0000
Subject: note 26574 modified in ref.mcrypt by derick
References: 1  Groups: php.notes 
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The statement that use of the 'generic' functions is 'recommended' in 2.4+ should probably be 'required'. Having like many others struggled with a "mcrypt module initialization failed" error even when phpinfo() showed mcrypt installed and all its algorithms loaded, I found that: $key = mcrypt_ecb (MCRYPT_3DES, $magic, $input, MCRYPT_ENCRYPT); fails, but $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, $magic, $iv); $key = mcrypt_generic ($td, $input); mcrypt_generic_end ($td); works fine. You can't leave out the creation of the IV to the right length, even though ECB doesn't use it (happily, because I want it repeatable). --was-- The statement that use of the 'generic' functions is 'recommended' in 2.4+ should probably be 'required'. Having like many others struggled with a "mcrypt module initialization failed" error even when phpinfo() showed mcrypt installed and all its algorithms loaded, I found that: $key = mcrypt_ecb (MCRYPT_3DES, $magic, $input, MCRYPT_ENCRYPT); fails, but $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, $magic, $iv); $key = mcrypt_generic ($td, $input); mcrypt_generic_end ($td); works fine. You can't leave out the creation of the IV to the right length, even though ECB doesn't use it (happily, because I want it repeatable). I have to say 1 self-explanatory line into 5 lines (one of which is pointless) to do the same thing doesn't seem like progress! http://www.php.net/manual/en/ref.mcrypt.php

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