On 3/21/12 11:00 AM, Zooko Wilcox-O'Hearn wrote: > On 64-bit servers, the it costs something around 10 *nanoseconds* per > byte, and on François's little low-power ARM box, it costs about 200 > nanoseconds per byte.
FYI, djb and friends just published a paper about high-speed crypto on ARM processors with the "NEON" vector instruction set (which includes the iPad 1 and iPhone 4), specifically the NaCl algorithms (Salsa20, Poly1305, Curve25519, and Ed25519). They got encryption down to 5.6 CPU cycles per byte. http://cr.yp.to/highspeed/neoncrypto-20120320.pdf cheers, -Brian _______________________________________________ tahoe-dev mailing list [email protected] http://tahoe-lafs.org/cgi-bin/mailman/listinfo/tahoe-dev
