diff options
| author | Martin Willi | 2015-07-16 19:14:03 +0200 |
|---|---|---|
| committer | Herbert Xu | 2015-07-17 21:20:25 +0800 |
| commit | 3d1e93cdf16cfe6f315167c65dc504e467e4681a (patch) | |
| tree | 500aae710ce50604b90858b4204e6fb54bfbe541 /crypto/Kconfig | |
| parent | 274f938e0a01286f465d84d5a3f1565225f4ec4b (diff) | |
crypto: chacha20 - Add an eight block AVX2 variant for x86_64
Extends the x86_64 ChaCha20 implementation by a function processing eight
ChaCha20 blocks in parallel using AVX2.
For large messages, throughput increases by ~55-70% compared to four block
SSSE3:
testing speed of chacha20 (chacha20-simd) encryption
test 0 (256 bit key, 16 byte blocks): 42249230 operations in 10 seconds (675987680 bytes)
test 1 (256 bit key, 64 byte blocks): 46441641 operations in 10 seconds (2972265024 bytes)
test 2 (256 bit key, 256 byte blocks): 33028112 operations in 10 seconds (8455196672 bytes)
test 3 (256 bit key, 1024 byte blocks): 11568759 operations in 10 seconds (11846409216 bytes)
test 4 (256 bit key, 8192 byte blocks): 1448761 operations in 10 seconds (11868250112 bytes)
testing speed of chacha20 (chacha20-simd) encryption
test 0 (256 bit key, 16 byte blocks): 41999675 operations in 10 seconds (671994800 bytes)
test 1 (256 bit key, 64 byte blocks): 45805908 operations in 10 seconds (2931578112 bytes)
test 2 (256 bit key, 256 byte blocks): 32814947 operations in 10 seconds (8400626432 bytes)
test 3 (256 bit key, 1024 byte blocks): 19777167 operations in 10 seconds (20251819008 bytes)
test 4 (256 bit key, 8192 byte blocks): 2279321 operations in 10 seconds (18672197632 bytes)
Benchmark results from a Core i5-4670T.
Signed-off-by: Martin Willi <martin@strongswan.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/Kconfig')
| -rw-r--r-- | crypto/Kconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig index 8f24185ee0a7..82caab0e8256 100644 --- a/crypto/Kconfig +++ b/crypto/Kconfig @@ -1214,7 +1214,7 @@ config CRYPTO_CHACHA20 <http://cr.yp.to/chacha/chacha-20080128.pdf> config CRYPTO_CHACHA20_X86_64 - tristate "ChaCha20 cipher algorithm (x86_64/SSSE3)" + tristate "ChaCha20 cipher algorithm (x86_64/SSSE3/AVX2)" depends on X86 && 64BIT select CRYPTO_BLKCIPHER select CRYPTO_CHACHA20 |