Add AES-NI acceleration for AES-XTS
* cipher/cipher-internal.h (gcry_cipher_handle): Change bulk XTS function to take cipher context. * cipher/cipher-xts.c (_gcry_cipher_xts_crypt): Ditto. * cipher/cipher.c (_gcry_cipher_open_internal): Setup AES-NI XTS bulk function. * cipher/rijndael-aesni.c (xts_gfmul_const, _gcry_aes_aesni_xts_enc) (_gcry_aes_aesni_xts_enc, _gcry_aes_aesni_xts_crypt): New. * cipher/rijndael.c (_gcry_aes_aesni_xts_crypt) (_gcry_aes_xts_crypt): New. * src/cipher.h (_gcry_aes_xts_crypt): New.
Benchmarks on Intel Core i7-4790K, 4.0Ghz (no turbo):
Before:
XTS enc | 1.66 ns/B 575.7 MiB/s 6.63 c/B XTS dec | 1.66 ns/B 575.5 MiB/s 6.63 c/B
After (~6x faster):
XTS enc | 0.270 ns/B 3528.5 MiB/s 1.08 c/B XTS dec | 0.272 ns/B 3511.5 MiB/s 1.09 c/B
- Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>