• Pushpalatha G S
• Dr.Ramesh S
• A. Raganna

The Demand for protection of data is increasing with the digital evolution. The advent of internet technologies made the multimedia data like speech, image or video is vulnerable to attack from various corners. Providing security for such data is at most important. In order to provide end to end security for speech data, an integrated approach of compression, water-marking and encryption of a speech signal has been proposed in this paper. Watermark provides authentication and ownership verification. Advanced Encryption Standard (AES) encryption is performed to provide security for watermarked speech signal. In addition to security, Discrete Cosine Transform (DCT) compression is performed to reduce the data-size of a speech signal.

DCT compression, speech watermarking, AES encryption, speech steganography, speech cryptography

"Voice Encryption with Watermarking for Secure Speech Communication", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 1, page no.406-414, January-2019, Available :http://www.jetir.org/papers/JETIR1901A52.pdf

"Voice Encryption with Watermarking for Secure Speech Communication", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 1, page no. pp406-414, January-2019, Available at : http://www.jetir.org/papers/JETIR1901A52.pdf