GOLGE: A case study of a secure data communication subsystem for micro-satellites

Yesil S., Sever R., Okcan B., Ismailoglu N.

2nd International Conference on Recent Advances in Space Technologies, İstanbul, Turkey, 9 - 11 June 2005, pp.438-441, (Full Text) identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/rast.2005.1512607
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.438-441
  • Middle East Technical University Affiliated: No

Abstract

This paper presents a real-time data encryption/decryption subsystem developed for a satellite, which is planned to be launched in 2007 by TUBITAK-BILTEN. The subsystem GOLGE contains two ASICs, which perform encryption/decryption using AES (Advanced Encryption Standard) and RSA (Rivest-Shamir-Adleman) algorithms and a communication interface unit. The data/command interface of the GOLGE module is implemented on a reconfigurable ASIC (FPGA), where the encryption/decryption processors have previously been designed in TUBITAK-BILTEN and prototyped in AMIS 0.35-mu m CMOS technology. The system uses an 8-bit bidirectional data bus, which operates at a maximum frequency of 40MHz supplying a throughput of 160 Mbit/sec and a SpaceWire interface, which provides a 100 Mbit/sec serial data communication link.