Patent ID: 7212630

Claim:
A method of encryption and decryption comprising the steps of: encrypting original information to generate encrypted information; binarizing at least a part of said encrypted information to generate binarized encrypted information, said binarizing at least said part of said encrypted information comprises binarizing at least one of a real part and an imaginary part of said encrypted information, said binarized encrypted information is expressed as φ R _ ⁡ ( x ) = { ⁢ 1 ⁢ ⁢ if ⁢ ⁢ Re [ φ ⁡ ( x ) ] > Median ⁢ { Re [ φ ⁢ ⁢ ( x ) ] } - 1 ⁢ ⁢ if ⁢ ⁢ Re [ φ ⁡ ( x ) ] < Median ⁢ { Re [ φ ( x ) ] } ⁢ for said real part, and φ 1 _ ⁡ ( x ) = { 1 ⁢ ⁢ if ⁢ ⁢ Im [ φ ⁡ ( x ) ] > Median ⁢ { Im ⁡ [ φ ⁡ ( x ) ] } - 1 ⁢ ⁢ if ⁢ ⁢ Im [ φ ⁡ ( x ) ] < Median ⁢ { Im [ φ ⁡ ( x ) ] } ⁢ . for said imaginary part; and decrypting said binarized encrypted information to provided decrypted information indicative of said original information.