A New Symmetric Key Encryption Algorithm Based on 2-d Geometry

Symmetric Key Cryptography is one of the prominent means of secure data transfer through unreliable channel. It requires less overhead than Public Key Cryptosystem. We present here, a new algorithm based on 2-d geometry using property of circle, and circle-centered angle. It is a block cipher technique but has the advantage of producing fixed size encrypted messages in all cases. It incorporates low computational complexity with fairly high confidentiality