Re: Slow AES and RC4 performance on Intel Westmere

2010-05-13 Thread Andy Polyakov
As previously noted on this mailing list, the AES performance (without AES-NI) of v1.0.o on Intel Westmere chips seems a bit slow. As also noted, this is price for side-channel countermeasures. Normally CBC performance is lower for small blocks sizes and usual fast for =512B blocks. Intel has

Slow AES and RC4 performance on Intel Westmere

2010-04-26 Thread Iain Morgan
Hello, As previously noted on this mailing list, the AES performance (without AES-NI) of v1.0.o on Intel Westmere chips seems a bit slow. In addition, RC4 seems a bit slow compared to previous Intel chips. I've included below the speed output for several versions of OpenSSL for comparison. For