Survey and analysis of security issues on RSA algorithm for digital video data

摘要

RSA is an encryption algorithm which is used for remote login session, credit card payment systems, transport layer security, secure socket layer, pretty good privacy and email security. Optimal asymmetric encryption padding is used in RSA to avoid chosen-ciphertext attack, coppersmith attack and chosen-plaintext attack. However, encryption in context of high definition video files shows repetitions of parts of ciphertext which can lead to frequency analysis attack. Key length and padding which are used in attack are according to National Institute of Standards and Technology and public key cryptography standards respectively. Security issues in RSA padding are analysed and experimental results are used in removal of defects. New architecture also prevents adaptive-chosen ciphertext attack. Integers which are generated by protocol in PKCS padding are used in new design, thus it does not create overhead in performance and challenges in handling and distribution of integers. Two XOR operations are replaced by one for more speed. RSA combined with new design of padding gets security advantages of both block and stream ciphers.