From aacc4fa936aebdffca382744bedb37e331501d06 Mon Sep 17 00:00:00 2001
From: Sun Yimin <emmansun@users.noreply.github.com>
Date: Thu, 14 Sep 2023 11:24:12 +0800
Subject: [PATCH] =?UTF-8?q?Updated=20SM3=E6=80=A7=E8=83=BD=E4=BC=98?=
 =?UTF-8?q?=E5=8C=96=20(markdown)?=
MIME-Version: 1.0
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---
 SM3性能优化.md | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/SM3性能优化.md b/SM3性能优化.md
index ed63212..17bf4d7 100644
--- a/SM3性能优化.md
+++ b/SM3性能优化.md
@@ -169,35 +169,44 @@ VSHL $7, XTMP0.S4, XTMP1.S4;
 VSRI $25, XTMP0.S4, XTMP1.S4;                 // XTMP1 = W[-13] rol 7
 VEXT $8, XWORD3.B16, XWORD2.B16, XTMP0.B16;   // XTMP0 = W[-6] = {w13,w12,w11,w10}
 VEOR XTMP1.B16, XTMP0.B16, XTMP0.B16;         // XTMP0 = W[-6] ^ (W[-13] rol 7)
+
+// Prepare P1 parameters
 VEXT $12, XWORD2.B16, XWORD1.B16, XTMP1.B16;  // XTMP1 = W[-9] = {w10,w9,w8,w7}, Vm = XWORD2, Vn = XWORD1
 VEOR XWORD0.B16, XTMP1.B16, XTMP1.B16;        // XTMP1 = W[-9] ^ W[-16]
-
 VEXT $4, XWORD2.B16, XWORD3.B16, XTMP3.B16;   // XTMP3 = W[-3] {w11,w15,w14,w13}
 VSHL $15, XTMP3.S4, XTMP2.S4;                 
 VSRI $17, XTMP3.S4, XTMP2.S4;                 // XTMP2 = W[-3] rol 15 {xxBA}
 VEOR XTMP1.B16, XTMP2.B16, XTMP2.B16;         // XTMP2 = W[-9] ^ W[-16] ^ (W[-3] rol 15) {xxBA}
 
+// P1
 VSHL $15, XTMP2.S4, XTMP4.S4;
 VSRI $17, XTMP2.S4, XTMP4.S4;                 // XTMP4 =  = XTMP2 rol 15 {xxBA}
 VSHL $8, XTMP4.S4, XTMP3.S4;
 VSRI $24, XTMP4.S4, XTMP3.S4;                 // XTMP3 = XTMP2 rol 23 {xxBA}
 VEOR XTMP2.B16, XTMP4.B16, XTMP4.B16;         // XTMP4 = XTMP2 XOR (XTMP2 rol 15 {xxBA})
 VEOR XTMP4.B16, XTMP3.B16, XTMP4.B16;         // XTMP4 = XTMP2 XOR (XTMP2 rol 15 {xxBA}) XOR (XTMP2 rol 23 {xxBA})
+
+// First 2 words message schedule result
 VEOR XTMP4.B16, XTMP0.B16, XTMP2.B16;         // XTMP2 = {..., ..., W[1], W[0]}
 
+// Prepare P1 parameters
 VEXT $4, XTMP2.B16, XWORD3.B16, XTMP3.B16;    // XTMP3 = W[-3] {W[0],w15, w14, w13}, Vm = XTMP2, Vn = XWORD3
 VSHL $15, XTMP3.S4, XTMP4.S4;
 VSRI $17, XTMP3.S4, XTMP4.S4;                 // XTMP4 = W[-3] rol 15 {DCxx}
 VEOR XTMP1.B16, XTMP4.B16, XTMP4.B16;         // XTMP4 = W[-9] XOR W[-16] XOR (W[-3] rol 15) {DCxx}
 
+// P1
 VSHL $15, XTMP4.S4, XTMP3.S4;
 VSRI $17, XTMP4.S4, XTMP3.S4;                 // XTMP3 = XTMP4 rol 15 {DCxx}
 VSHL $8, XTMP3.S4, XTMP1.S4;
 VSRI $24, XTMP3.S4, XTMP1.S4;                 // XTMP1 = XTMP4 rol 23 {DCxx}
 VEOR XTMP3.B16, XTMP4.B16, XTMP3.B16;         // XTMP3 = XTMP4 XOR (XTMP4 rol 15 {DCxx})
 VEOR XTMP3.B16, XTMP1.B16, XTMP1.B16;         // XTMP1 = XTMP4 XOR (XTMP4 rol 15 {DCxx}) XOR (XTMP4 rol 23 {DCxx})
+
+// Last 2 words message schedule result
 VEOR XTMP1.B16, XTMP0.B16, XTMP1.B16;         // XTMP1 = {W[3], W[2], ..., ...}
 
+// 拼接结果
 VEXT $8, XTMP2.B16, XTMP1.B16, XTMP3.B16;     // XTMP3 = {W[1], W[0], W[3], W[2]}, Vm = XTMP2, Vn = XTMP1
 VEXT $8, XTMP3.B16, XTMP3.B16, XWORD0.B16;    // XWORD0 = {W[3], W[2], W[1], W[0]}
 ```