Author_Institution :
Sch. of Comput. Sci., Univ. Sains Malaysia, Penang, Malaysia
Abstract :
Authentication of digital streams poses operational challenges which do not arise for block-oriented data, in particular the necessity for high authenticative (especially with respect receiver-side verification) performance and a robust tolerance against data packet loss. These issues can be addressed via selection of cryptographic protocols for specific functionality within a multi-protocol framework. We outline the application of: (1) Rabin (1979) number-theoretic signatures, (2) Even-Goldreich-Micali (1990) one-time signatures, (3) Wong-Lam (see Computer Science Technical Report TR-98-15, University of Texas, Austin) star-shaped hash graphs, (4) unbuffered hash chains, and (5) Golle (see The 3rd Workshop on Elliptic Curve Cryptography, 1999) hash chains; towards a two-scale authenticative framework. Intra-buffer packet-level and intra-group buffer-level structures are implemented via Golle and double chains respectively, with WL stars and EGM public-keys/signatures used to implement a Golle chain as an authenticator for a buffer group of Golle chain buffers. Rabin signatures are used to establish the origin of the EGM public-key sequence, with subsequent EGM public-keys/signatures verifiable using an earlier instance in the public-key sequence
Keywords :
buffer storage; cryptography; graph theory; message authentication; number theory; protocols; sequences; Golle chains; buffer group; chain buffers; cryptographic protocols; data packet loss tolerance; digital streams authentication; double chains; intra-buffer packet-level; intra-group buffer-level structure; multi-protocol cryptography; number-theoretic signatures; one-time signatures; public-key sequence; public-keys/signatures; receiver-side verification; star-shaped hash graphs; two-scale authentication; unbuffered hash chains; Authentication; Biomedical informatics; Communication networks; Cryptographic protocols; Cryptography; High performance computing; IP networks; Performance loss; Public key; Robustness;
