http://www.iaeme.com/IJECET/index.asp 91 editor@iaeme.com International Journal of Electronics and Communication Engineering and Technology (IJECET) Volume 7, Issue 6, November-December 2016, pp. 91–95, Article ID: IJECET_07_06_013 Available online at http://www.iaeme.com/IJECET/issues.asp?JType=IJECET&VType=7&IType=6 ISSN Print: 0976-6464 and ISSN Online: 0976-6472 © IAEME Publication LITERATURE SURVEY ON RECENT AUDIO ENCRYPTION TECHNIQUES Srividya L Department of ECE, Dayananda Sagar College of Engineering, Bangalore, India Dr. P.N. Sudha Department of ECE, K.S. Institute of Technology, Bangalore, India ABSTRACT Encryption of audio data is more complex with high computation complexity compared to text and documented data as audio signals are lengthy and has negative values which can be lost after some transformations. Encryption algorithms must meet the trade off between real time processing and security [8]. Most of the data encryption algorithm when applied to audio data resulted in low conversion efficiency. Hence there is a need for designing faster and secured encryption algorithms for audio data and this is the booming area for researchers. This is a survey paper about the study of various audio encryption techniques and its derivative to achieve various cryptographic security parameters. Key words: Audio encryption, biometric audio encryption, chaotic encryption. digital audio watermarking, selective encryption, audio shuffle encryption. Cite this Article: Srividya L and Dr. P.N. Sudha, Literature Survey on Recent Audio Encryption Techniques, International Journal of Electronics and Communication Engineering and Technology, 7(6), 2016, pp. 91–95. http://www.iaeme.com/IJECET/issues.asp?JType=IJECET&VType=7&IType=6 1. INTRODUCTION With the merging of wireless communications with multimedia and internet, wireless networks have expanded their applications in our day to day life. The wireless networks are open medium and hence are vulnerable to various security attacks. In this paper we discuss about one of the multimedia data i.e., audio data. The security of the audio data is achieved by various techniques like stegnography, cryptography and other techniques. Cryptography involves application of mathematical transformations on the secret information in order to protect the data over the insecure channel while transmission. This is known encryption. Steganography involves hiding of the secret information within the other information. Encryption of audio data is more complex and difficult compared to text and document data as audio signals are lengthy and has negative amplitude values which can be lost after some transformations. The section 2 and 3 brief’s the literature survey about the existing conventional encryption techniques along with comparison of their performances in terms of throughput, processing time, vulnerability and security.