mcrypt_enc_is_block_mode
mcrypt_encrypt
mcrypt
PHP Manual

# mcrypt_enc_self_test

(PHP 4 >= 4.0.2, PHP 5)

mcrypt_enc_self_test — Runs a self test on the opened module

### Description

int mcrypt_enc_self_test ( resource `$td` )

This function runs the self test on the algorithm specified by the descriptor `td` .

### Parameters

`td`

  The encryption descriptor.

### Return Values

If the self test succeeds it returns `FALSE`. In case of an error, it returns `TRUE`.

mcrypt_enc_is_block_mode
mcrypt_encrypt
mcrypt
PHP Manual