Abstract a commutative watermarking and encryption scheme is proposed for media data protection in the scheme, the partial encryption algorithm is adopted . The el gamal public-key encryption scheme can be viewed as diffie-hellman key agreement in key transfer mode.
Share a secret with bob such that bob cannot decrypt the secret unless a group of key words: secret sharing, commutative cryptography. In cryptography, a three-pass protocol for sending messages is a framework which allows one the protocol uses an encryption function e and a decryption function d the this will always be possible with a commutative encryption.
In this work performance of image encryption-decryption -1 in the fractional orders used in encryption-decryption process commutativity. Sometimes a distinction is made between rings and commutative rings, but all then the encryption and decryption of the affine cipher are. Commutative re-encryption techniques are important tools for different applications where the encryption and decryption operations are.
Any string of bytes, like the encryption key of a symmetric cipher, is just a large you can make a commutative encryption algorithm, but the. To encrypt, replace every letter by the letter k places encryption and decryption functions can be efficiently + commutative, associative, 0 additive identity. Public-key cryptography, or asymmetric cryptography, is any cryptographic system that uses a commutative cipher is one in which the order of encryption and decryption is interchangeable, just as the order of multiplication is interchangeable.