PHP mcrypt_generic() Function for Data Encryption
The article explains PHP's mcrypt_generic() function, detailing its purpose for encrypting data, required parameters ($td as the encryption descriptor and $data as the plaintext), the need for block-size-aligned input, initialization and cleanup steps, and the nature of its returned encrypted output.
mcrypt_generic() is a PHP function used to encrypt data using a previously initialized encryption descriptor.
The function takes two parameters: $td, a resource representing the encryption descriptor initialized via mcrypt_generic_init(), and $data, the string data to be encrypted. The input data length must be a multiple of the block size; otherwise it should be padded with "\0".
It returns the encrypted data, which may be longer than the input due to padding.
Before calling mcrypt_generic(), initialize the encryption handle with mcrypt_generic_init(); after encryption, clean up with mcrypt_generic_deinit(). See also mcrypt_module_open() for opening the module.
Function signature:
string mcrypt_generic(resource $td, string $data)Signed-in readers can open the original source through BestHub's protected redirect.
This article has been distilled and summarized from source material, then republished for learning and reference. If you believe it infringes your rights, please contactand we will review it promptly.
Laravel Tech Community
Specializing in Laravel development, we continuously publish fresh content and grow alongside the elegant, stable Laravel framework.
How this landed with the community
Was this worth your time?
0 Comments
Thoughtful readers leave field notes, pushback, and hard-won operational detail here.