PHP Simple implementation des encryption and decryption method _php skills

This article illustrates the simple method of implementing DES encryption and decryption by PHP. Share to everyone for your reference, specific as follows:

DES encryption:

function Des_encrypt ($STR, $key) {
  $block = mcrypt_get_block_size (' des ', ' ECB ');
  $pad = $block-(strlen ($STR)% $block);
  $str. = Str_repeat (Chr ($pad), $pad);
  Return Mcrypt_encrypt (Mcrypt_des, $key, $str, MCRYPT_MODE_ECB);
}

Des decryption:

function Des_decrypt ($STR, $key) {
  $str = Mcrypt_decrypt (Mcrypt_des, $key, $str, MCRYPT_MODE_ECB);
  $len = strlen ($STR);
  $block = Mcrypt_get_block_size (' des ', ' ECB ');
  $pad = Ord ($str [$len-1]);
  Return substr ($str, 0, $len-$pad);

PS: About encryption and decryption interested friends can also refer to the site online tools:

Password Security online detection:
Http://tools.jb51.net/password/my_password_safe

High Strength Password Generator:
Http://tools.jb51.net/password/CreateStrongPassword

MD5 Online Encryption Tool:
Http://tools.jb51.net/password/CreateMD5Password

Thunderbolt, Express, Cyclone URL encryption/decryption tool:
Http://tools.jb51.net/password/urlrethunder

Online hashing/hashing algorithm encryption tool:
Http://tools.jb51.net/password/hash_encrypt

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I hope this article will help you with the PHP program design.