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sm4: ppc64x, use NIBBLE_MASK as round key

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Sun Yimin 2024-09-11 16:36:35 +08:00 committed by GitHub
parent 7cc5130380
commit c279984922
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GPG Key ID: B5690EEEBB952194
1 changed files with 3 additions and 7 deletions
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sm4/asm_ppc64x.s
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@ -102,7 +102,7 @@ GLOBL ·rcon(SB), RODATA, $192
// - y: 128 bits temp register
// - z: 128 bits temp register
#define AFFINE_TRANSFORM_NOTX(L, H, V_FOUR, x, y, z) \
VNOR x, x, z; \
VNOR x, x, z; \ // z = NOT(x)
VAND NIBBLE_MASK, z, z; \
VPERM L, L, z, y; \
VSRD x, V_FOUR, x; \
@ -116,13 +116,10 @@ GLOBL ·rcon(SB), RODATA, $192
// - y: 128 bits temp register
// - z: 128 bits temp register
#define SM4_SBOX(x, y, z) \
; \
AFFINE_TRANSFORM(M1L, M1H, V_FOUR, x, y, z); \
; \
VPERM x, x, INVERSE_SHIFT_ROWS, x; \
VCIPHERLAST x, ZERO, x; \
; \
AFFINE_TRANSFORM(M2L, M2H, V_FOUR, x, y, z)
VCIPHERLAST x, NIBBLE_MASK, x; \
AFFINE_TRANSFORM_NOTX(M2L, M2H, V_FOUR, x, y, z)
#define SM4_TAO_L2(x, y, z) \
SM4_SBOX(x, y, z); \
@ -165,7 +162,6 @@ 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