Data Security is encryption class for transforming plain text into cipher text. This ensures data confidentiality by using 160 bit key to encrypt blocks of plain text. The strength of key it's very high and to break the key it is needed ~2^160 attempts which is number with length of 17 numbers and today's processors aren't strong enough to break this key for a short time.
Encryption algorithm is designed and discovered by Arlind Nushi, author of this script and named ANCrypt.