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mcrypt_enc_get_block_size

(PHP 4 >= 4.0.2, PHP 5)

mcrypt_enc_get_block_size -- Returns the blocksize of the opened algorithm

Description

int mcrypt_enc_get_block_size ( resource td)

This function returns the block size of the algorithm specified by the encryption descriptor td in bytes.

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mcrypt_enc_get_algorithms_nameUpmcrypt_enc_get_iv_size
. "\n";
  
    $td = mcrypt_module_open('cast-256', '', MCRYPT_MODE_CFB, '');
    echo mcrypt_enc_get_algorithms_name($td). "\n";
?>

Prints:
CAST-256
CAST-256