ktore sifre pre mcrypt()?

ktore z tychto sifier alebo ako to nazvat su najbezpecnejsie?

MCRYPT_3DES
MCRYPT_ARCFOUR_IV (libmcrypt > 2.4.x only)
MCRYPT_ARCFOUR (libmcrypt > 2.4.x only)
MCRYPT_BLOWFISH
MCRYPT_CAST_128
MCRYPT_CAST_256
MCRYPT_CRYPT
MCRYPT_DES
MCRYPT_DES_COMPAT (libmcrypt 2.2.x only)
MCRYPT_ENIGMA (libmcrypt > 2.4.x only, alias for MCRYPT_CRYPT)
MCRYPT_GOST
MCRYPT_IDEA (non-free)
MCRYPT_LOKI97 (libmcrypt > 2.4.x only)
MCRYPT_MARS (libmcrypt > 2.4.x only, non-free)
MCRYPT_PANAMA (libmcrypt > 2.4.x only)
MCRYPT_RIJNDAEL_128 (libmcrypt > 2.4.x only)
MCRYPT_RIJNDAEL_192 (libmcrypt > 2.4.x only)
MCRYPT_RIJNDAEL_256 (libmcrypt > 2.4.x only)
MCRYPT_RC2
MCRYPT_RC4 (libmcrypt 2.2.x only)
MCRYPT_RC6 (libmcrypt > 2.4.x only)
MCRYPT_RC6_128 (libmcrypt 2.2.x only)
MCRYPT_RC6_192 (libmcrypt 2.2.x only)
MCRYPT_RC6_256 (libmcrypt 2.2.x only)
MCRYPT_SAFER64
MCRYPT_SAFER128
MCRYPT_SAFERPLUS (libmcrypt > 2.4.x only)
MCRYPT_SERPENT(libmcrypt > 2.4.x only)
MCRYPT_SERPENT_128 (libmcrypt 2.2.x only)
MCRYPT_SERPENT_192 (libmcrypt 2.2.x only)
MCRYPT_SERPENT_256 (libmcrypt 2.2.x only)
MCRYPT_SKIPJACK (libmcrypt > 2.4.x only)
MCRYPT_TEAN (libmcrypt 2.2.x only)
MCRYPT_THREEWAY
MCRYPT_TRIPLEDES (libmcrypt > 2.4.x only)
MCRYPT_TWOFISH (for older mcrypt 2.x versions, or mcrypt > 2.4.x )
MCRYPT_TWOFISH128 (TWOFISHxxx are available in newer 2.x versions, but not in the 2.4.x versions)
MCRYPT_TWOFISH192
MCRYPT_TWOFISH256
MCRYPT_WAKE (libmcrypt > 2.4.x only)
MCRYPT_XTEA (libmcrypt > 2.4.x only)

http://cr.php.net/manual/sk/ref.mcrypt.php