Paper
Watermark with Fast Encryption for FPGA Based Secured Realtime Speech Communication
- Authors:
- Hussain Mohammed Dipu Kabir; Saeed Anwar; Md. Liakot Ali; Abu Shahadat Md. Ibrahim; Md. Abdul Matin
- Abstract
- This paper presents a Field-Programmable Gate Array (FPGA) based secured speech communication system. Data-size is one of the major concerns of cryptographic systems. To maintain same data-rate compression is performed at first. Compression reduced data-size. Watermark and random key is embedded at the vacant places. There are many encryption techniques, but for realtime encryption, fast encryption is needed. FPGA is an efficient device for these operations on realtime signals. Conventional processors contain small number of registers and perform large operations in multiple cycles. FPGA can perform a large number of operations concurrently. Change has brought at the generation of random numbers. To generate more secured random number, nibble bit of noise signal is Xored with hardware-generated random number. In proposed method voice signal is compressed, watermarked, encrypted and sent through a transmission medium from the transmitting end. Receiver receives that signal and decrypts both signal and watermark.
- Keywords
- FPGA; Watermarking; Compression; AES; DES; Eavesdropping
- StartPage
- 75
- EndPage
- 84
- Doi