Efficient Compression and Encryption for Digital Data Transmission

Table 8

Compression with Lossless JPEG and then encryption.

FILE	PLAIN	LOSSLESS; JPEG	LOSSLESS JPEG + DES	LOSSLESS JPEG + 3DES	LOSSLESS JPEG + AES	LOSSLESS JPEG + RC4
TsukubaR.ppm	331791	222547	222552	222552	222560	222547
Zlatuost.ppm	417645	307076	307080	307080	307088	307076
couple.ppm	1665645	890998	891000	891000	891008	890998
emir.ppm	1766859	1209945	1209952	1209952	1209952	1209945
etud.ppm	2801710	2118361	2118368	2118368	2118368	2118361
model.ppm	1724418	906468	906472	906472	906480	906468