Counter mode encryption for FNBDT/MELP

Author

Sleezer, R. ; Daniel, E. ; Raymond, J. ; Brewer, J. ; Teague, K.

Author_Institution

Electr. & Comput. Eng., Oklahoma State Univ., Stillwater, OK, USA

Volume

3

fYear

2002

fDate

4-7 Aug. 2002

Abstract

Counter mode encryption is the proposed method for encrypting Mixed Excitation Linear Predictor (MELP) data for the Future NarrowBand Digital Terminal (FNBDT). Counter mode encryption employs an indefinite keypad generated by an encrypting function applied to a counter. The clear (unencrypted) data is exclusive-or-ed with the next available key in the pad. When encrypted data is received, the clear data may be retrieved by exclusive-or-ing the encrypted data with the same key used for encryption. The benefits and drawbacks of implementing counter mode encryption for real time MELP audio applications are presented.

Keywords

audio coding; cryptography; linear predictive coding; synchronisation; telecommunication security; voice communication; FNBDT/MELP; Future NarrowBand Digital Terminal; MELP data; audio communication; counter mode encryption; encrypting function; encryption synchronization; mixed excitation linear predictor data; real time MELP audio applications; secure communication; Bandwidth; Codecs; Counting circuits; Cryptography; Data engineering; Information retrieval; NIST; Narrowband; Protocols; Speech;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2002. MWSCAS-2002. The 2002 45th Midwest Symposium on

Print_ISBN

0-7803-7523-8

Type

conf

DOI

10.1109/MWSCAS.2002.1187134

Filename

1187134