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sm4: ppc64x, use ZERO as VCIPHERLAST round key

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Sun Yimin 2024-09-11 10:18:46 +08:00 committed by GitHub
parent 3491cb091a
commit 44e6ef3444
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GPG Key ID: B5690EEEBB952194
1 changed files with 10 additions and 13 deletions
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23
sm4/asm_ppc64x.s
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@ -6,16 +6,17 @@
#include "textflag.h"
#define ZERO V18
#define REVERSE_WORDS V19
#define M1L V20
#define M1H V21
#define M2L V22
#define M2H V23
#define V_FOUR V24
#define M0 V25
#define M1 V26
#define M2 V27
#define M3 V28
#define M1L V20
#define M1H V21
#define M2L V22
#define M2H V23
#define NIBBLE_MASK V29
#define INVERSE_SHIFT_ROWS V30
// For instruction emulation
@ -101,7 +102,7 @@ GLOBL ·rcon(SB), RODATA, $192
// - y: 128 bits temp register
// - z: 128 bits temp register
#define AFFINE_TRANSFORM_N(L, H, V_FOUR, x, y, z) \
VNAND NIBBLE_MASK, x, z; \
VNAND NIBBLE_MASK, x, z; \ // VNAND is NOT same as AMD64 PANDN
VPERM L, L, z, y; \
VSRW x, V_FOUR, x; \
VAND NIBBLE_MASK, x, z; \
@ -118,9 +119,9 @@ GLOBL ·rcon(SB), RODATA, $192
AFFINE_TRANSFORM(M1L, M1H, V_FOUR, x, y, z); \
; \
VPERM x, x, INVERSE_SHIFT_ROWS, x; \
VCIPHERLAST x, NIBBLE_MASK, x; \
VCIPHERLAST x, ZERO, x; \
; \
AFFINE_TRANSFORM_N(M2L, M2H, V_FOUR, x, y, z)
AFFINE_TRANSFORM(M2L, M2H, V_FOUR, x, y, z)
#define SM4_TAO_L2(x, y, z) \
SM4_SBOX(x, y, z); \
@ -163,6 +164,7 @@ TEXT ·expandKeyAsm(SB),NOSPLIT,$0
LXVD2X (R4)(R3), M2L
MOVD $96, R3
LXVD2X (R4)(R3), M2H
VSPLTISB $0, ZERO // VZERO ZERO
MOVD key+0(FP), R3
MOVD ck+8(FP), R4
@ -181,11 +183,6 @@ TEXT ·expandKeyAsm(SB),NOSPLIT,$0
VSLDOI $4, V1, V1, V2
VSLDOI $4, V2, V2, V3
VNAND NIBBLE_MASK, REVERSE_WORDS, V5
STXVW4X V5, (R5)
VNAND REVERSE_WORDS, NIBBLE_MASK, V5
STXVW4X V5, (R6)
/*
ksLoop:
LXVW4X (R4), V4
SM4_EXPANDKEY_ROUND(V4, V7, V8, V9, V0, V1, V2, V3, V5)
@ -203,7 +200,7 @@ ksLoop:
ADD $16, R4
ADD $-16, R6
BDNZ ksLoop
*/
RET
// func encryptBlocksAsm(xk *uint32, dst, src []byte, inst int)