From 4f2ee038f161f26452e001bbf48f8e7d103d8874 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Niels=20M=C3=B6ller?= Date: Mon, 13 Jul 2020 22:41:14 +0200 Subject: Reschedule first permutation --- arm/neon/chacha-3core.asm | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-) (limited to 'arm') diff --git a/arm/neon/chacha-3core.asm b/arm/neon/chacha-3core.asm index 23aad699..f1fa5cb8 100644 --- a/arm/neon/chacha-3core.asm +++ b/arm/neon/chacha-3core.asm @@ -120,35 +120,33 @@ PROLOGUE(_nettle_chacha_3core) vadd.i32 X2, X2, X3 vsri.u32 Y3, T0, #24 + vext.32 X3, X3, X3, #3 vshl.i32 Z3, T1, #8 veor T0, X1, X2 vadd.i32 Y2, Y2, Y3 vsri.u32 Z3, T1, #24 + vext.32 Y3, Y3, Y3, #3 vshl.i32 X1, T0, #7 veor T1, Y1, Y2 vadd.i32 Z2, Z2, Z3 vsri.u32 X1, T0, #25 vshl.i32 Y1, T1, #7 veor T0, Z1, Z2 + vext.32 X1, X1, X1, #1 vsri.u32 Y1, T1, #25 vshl.i32 Z1, T0, #7 + vext.32 Y2, Y2, Y2, #2 + vext.32 Y1, Y1, Y1, #1 vsri.u32 Z1, T0, #25 + vext.32 X2, X2, X2, #2 - vext.32 X1, X1, X1, #1 - vext.32 X2, X2, X2, #2 - vext.32 X3, X3, X3, #3 - - vext.32 Y1, Y1, Y1, #1 - vext.32 Y2, Y2, Y2, #2 - vext.32 Y3, Y3, Y3, #3 - - vext.32 Z1, Z1, Z1, #1 - vext.32 Z2, Z2, Z2, #2 - vext.32 Z3, Z3, Z3, #3 - + C Second QROUND vadd.i32 X0, X0, X1 + vext.32 Z2, Z2, Z2, #2 + vext.32 Z1, Z1, Z1, #1 veor X3, X3, X0 vadd.i32 Y0, Y0, Y1 + vext.32 Z3, Z3, Z3, #3 vrev32.16 X3, X3 C lrot 16 veor Y3, Y3, Y0 vadd.i32 Z0, Z0, Z1 -- cgit v1.2.1