Implementation of Speech Encryption and Decryption using Advanced Encryption Standard

Speech encryption is always been a very important part of secured communication. As Digital transmission is much more efficient than analog transmission and it is much easier for digital encryption techniques to achieve high security. Modern cryptographic algorithms have potential to provide security services like data confidentiality, data integrity, authentication, and access control. With the advent of reconfigurable devices like FPGAs, hardware implementation of complex algorithms has become quite easy which makes it possible to achieve significant improvement in speed.