I'm reposting this because it never appeared on the list for some reason, even after 12 hours. ---------------- I was going to use GnuPG for encrypting some very large backup files on disk (~200 GB). However, the symmetric ciphers in GnuPG seem to be fairly slow. Using the Windows build of 1.4.2, I only modest throughputs piping GPG output from a fast 7200 RPM disk to >NUL (the Windows equivalent of /dev/nul). (See table at end of email).
The process is not disk bound, since it uses 100% CPU and the different algorithms take different times. Compression was turned off. I have seen references on the net to fast software implementations of AES that are an order of magnitude faster than GnuPG on a P4 (~1.5 Gbps). See http://www.via.com.tw/en/resources/pressroom/2003_archive/pr031014edenn.jsp. Has anyone made a GnuPG patch that includes faster implementations of the core symmetric algorithms? What other tools are people using for encrypting backups in datacenter operations (as GnuPG seems to be too slow for this task)? Thanks for any help, Ryan ------------ Tests encrypting a 1 GB file on a 2.4 GHz Pentium 4. Cipher Algorithm Speed (Mbps) ------------------------------- CAST5 153.39 BLOWFISH 59.24 AES 102.26 3DES 64.59 AES-256 81.81 TWOFISH 124.49 -- RPM ========================= All problems can be solved by diplomacy, but violence and treachery are equally effective, and more fun. -Anonymous _______________________________________________ Gnupg-users mailing list Gnupg-users@gnupg.org http://lists.gnupg.org/mailman/listinfo/gnupg-users
