Implementations of compression algorithms for SSL/TLS protocols and their evaluations

摘要

In the SSL/TLS protocols, their specifications define that data from the upper layer may be compressed before the data are encrypted. Since no compression algorithm except non-compression is defined in the specifications, nobody can compress transmission data at the SSL/TLS protocols unless communication entities have a special agreement to use a compression algorithm. This paper discusses two implementation systems which introduce compression algorithms into an SSL/TLS program at HTTP level or SSL/TLS record layer. For the both systems, we observe their compression ratio and average transfer time for several text and compressed graphic files.