Modify Speech Cryptosystem Based on Shuffling Overlapping Blocks Technique
A combination of high efficiency cryptosystem algorithms based on MOBS (Modified Overlapped Block Shuffling) and a HCS (Hybrid Chaotic System) are proposed to secure the transfer of an on-the-go audio signal (i.e. speech). As online voice based communication is becoming increasingly more common, the need to protect these signals from an unauthorized third party becomes more significant. In natural speech, the values and positions for neighboring samples are highly correlated. The proposed algorithm breaks the correlation by using MOBS and encrypting with a HCS.