new file mode 100644
@@ -0,0 +1,209 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * SM4 helper macros for Crypto Extensions
+ * Copyright (C) 2022 Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
+ */
+
+#define SM4_PREPARE(ptr) \
+ ld1 {v24.16b-v27.16b}, [ptr], #64; \
+ ld1 {v28.16b-v31.16b}, [ptr];
+
+#define SM4_CRYPT_BLK_BE(b0) \
+ sm4e b0.4s, v24.4s; \
+ sm4e b0.4s, v25.4s; \
+ sm4e b0.4s, v26.4s; \
+ sm4e b0.4s, v27.4s; \
+ sm4e b0.4s, v28.4s; \
+ sm4e b0.4s, v29.4s; \
+ sm4e b0.4s, v30.4s; \
+ sm4e b0.4s, v31.4s; \
+ rev64 b0.4s, b0.4s; \
+ ext b0.16b, b0.16b, b0.16b, #8; \
+ rev32 b0.16b, b0.16b;
+
+#define SM4_CRYPT_BLK(b0) \
+ rev32 b0.16b, b0.16b; \
+ SM4_CRYPT_BLK_BE(b0);
+
+#define SM4_CRYPT_BLK2_BE(b0, b1) \
+ sm4e b0.4s, v24.4s; \
+ sm4e b1.4s, v24.4s; \
+ sm4e b0.4s, v25.4s; \
+ sm4e b1.4s, v25.4s; \
+ sm4e b0.4s, v26.4s; \
+ sm4e b1.4s, v26.4s; \
+ sm4e b0.4s, v27.4s; \
+ sm4e b1.4s, v27.4s; \
+ sm4e b0.4s, v28.4s; \
+ sm4e b1.4s, v28.4s; \
+ sm4e b0.4s, v29.4s; \
+ sm4e b1.4s, v29.4s; \
+ sm4e b0.4s, v30.4s; \
+ sm4e b1.4s, v30.4s; \
+ sm4e b0.4s, v31.4s; \
+ sm4e b1.4s, v31.4s; \
+ rev64 b0.4s, b0.4s; \
+ rev64 b1.4s, b1.4s; \
+ ext b0.16b, b0.16b, b0.16b, #8; \
+ ext b1.16b, b1.16b, b1.16b, #8; \
+ rev32 b0.16b, b0.16b; \
+ rev32 b1.16b, b1.16b; \
+
+#define SM4_CRYPT_BLK2(b0, b1) \
+ rev32 b0.16b, b0.16b; \
+ rev32 b1.16b, b1.16b; \
+ SM4_CRYPT_BLK2_BE(b0, b1);
+
+#define SM4_CRYPT_BLK4_BE(b0, b1, b2, b3) \
+ sm4e b0.4s, v24.4s; \
+ sm4e b1.4s, v24.4s; \
+ sm4e b2.4s, v24.4s; \
+ sm4e b3.4s, v24.4s; \
+ sm4e b0.4s, v25.4s; \
+ sm4e b1.4s, v25.4s; \
+ sm4e b2.4s, v25.4s; \
+ sm4e b3.4s, v25.4s; \
+ sm4e b0.4s, v26.4s; \
+ sm4e b1.4s, v26.4s; \
+ sm4e b2.4s, v26.4s; \
+ sm4e b3.4s, v26.4s; \
+ sm4e b0.4s, v27.4s; \
+ sm4e b1.4s, v27.4s; \
+ sm4e b2.4s, v27.4s; \
+ sm4e b3.4s, v27.4s; \
+ sm4e b0.4s, v28.4s; \
+ sm4e b1.4s, v28.4s; \
+ sm4e b2.4s, v28.4s; \
+ sm4e b3.4s, v28.4s; \
+ sm4e b0.4s, v29.4s; \
+ sm4e b1.4s, v29.4s; \
+ sm4e b2.4s, v29.4s; \
+ sm4e b3.4s, v29.4s; \
+ sm4e b0.4s, v30.4s; \
+ sm4e b1.4s, v30.4s; \
+ sm4e b2.4s, v30.4s; \
+ sm4e b3.4s, v30.4s; \
+ sm4e b0.4s, v31.4s; \
+ sm4e b1.4s, v31.4s; \
+ sm4e b2.4s, v31.4s; \
+ sm4e b3.4s, v31.4s; \
+ rev64 b0.4s, b0.4s; \
+ rev64 b1.4s, b1.4s; \
+ rev64 b2.4s, b2.4s; \
+ rev64 b3.4s, b3.4s; \
+ ext b0.16b, b0.16b, b0.16b, #8; \
+ ext b1.16b, b1.16b, b1.16b, #8; \
+ ext b2.16b, b2.16b, b2.16b, #8; \
+ ext b3.16b, b3.16b, b3.16b, #8; \
+ rev32 b0.16b, b0.16b; \
+ rev32 b1.16b, b1.16b; \
+ rev32 b2.16b, b2.16b; \
+ rev32 b3.16b, b3.16b;
+
+#define SM4_CRYPT_BLK4(b0, b1, b2, b3) \
+ rev32 b0.16b, b0.16b; \
+ rev32 b1.16b, b1.16b; \
+ rev32 b2.16b, b2.16b; \
+ rev32 b3.16b, b3.16b; \
+ SM4_CRYPT_BLK4_BE(b0, b1, b2, b3);
+
+#define SM4_CRYPT_BLK8_BE(b0, b1, b2, b3, b4, b5, b6, b7) \
+ sm4e b0.4s, v24.4s; \
+ sm4e b1.4s, v24.4s; \
+ sm4e b2.4s, v24.4s; \
+ sm4e b3.4s, v24.4s; \
+ sm4e b4.4s, v24.4s; \
+ sm4e b5.4s, v24.4s; \
+ sm4e b6.4s, v24.4s; \
+ sm4e b7.4s, v24.4s; \
+ sm4e b0.4s, v25.4s; \
+ sm4e b1.4s, v25.4s; \
+ sm4e b2.4s, v25.4s; \
+ sm4e b3.4s, v25.4s; \
+ sm4e b4.4s, v25.4s; \
+ sm4e b5.4s, v25.4s; \
+ sm4e b6.4s, v25.4s; \
+ sm4e b7.4s, v25.4s; \
+ sm4e b0.4s, v26.4s; \
+ sm4e b1.4s, v26.4s; \
+ sm4e b2.4s, v26.4s; \
+ sm4e b3.4s, v26.4s; \
+ sm4e b4.4s, v26.4s; \
+ sm4e b5.4s, v26.4s; \
+ sm4e b6.4s, v26.4s; \
+ sm4e b7.4s, v26.4s; \
+ sm4e b0.4s, v27.4s; \
+ sm4e b1.4s, v27.4s; \
+ sm4e b2.4s, v27.4s; \
+ sm4e b3.4s, v27.4s; \
+ sm4e b4.4s, v27.4s; \
+ sm4e b5.4s, v27.4s; \
+ sm4e b6.4s, v27.4s; \
+ sm4e b7.4s, v27.4s; \
+ sm4e b0.4s, v28.4s; \
+ sm4e b1.4s, v28.4s; \
+ sm4e b2.4s, v28.4s; \
+ sm4e b3.4s, v28.4s; \
+ sm4e b4.4s, v28.4s; \
+ sm4e b5.4s, v28.4s; \
+ sm4e b6.4s, v28.4s; \
+ sm4e b7.4s, v28.4s; \
+ sm4e b0.4s, v29.4s; \
+ sm4e b1.4s, v29.4s; \
+ sm4e b2.4s, v29.4s; \
+ sm4e b3.4s, v29.4s; \
+ sm4e b4.4s, v29.4s; \
+ sm4e b5.4s, v29.4s; \
+ sm4e b6.4s, v29.4s; \
+ sm4e b7.4s, v29.4s; \
+ sm4e b0.4s, v30.4s; \
+ sm4e b1.4s, v30.4s; \
+ sm4e b2.4s, v30.4s; \
+ sm4e b3.4s, v30.4s; \
+ sm4e b4.4s, v30.4s; \
+ sm4e b5.4s, v30.4s; \
+ sm4e b6.4s, v30.4s; \
+ sm4e b7.4s, v30.4s; \
+ sm4e b0.4s, v31.4s; \
+ sm4e b1.4s, v31.4s; \
+ sm4e b2.4s, v31.4s; \
+ sm4e b3.4s, v31.4s; \
+ sm4e b4.4s, v31.4s; \
+ sm4e b5.4s, v31.4s; \
+ sm4e b6.4s, v31.4s; \
+ sm4e b7.4s, v31.4s; \
+ rev64 b0.4s, b0.4s; \
+ rev64 b1.4s, b1.4s; \
+ rev64 b2.4s, b2.4s; \
+ rev64 b3.4s, b3.4s; \
+ rev64 b4.4s, b4.4s; \
+ rev64 b5.4s, b5.4s; \
+ rev64 b6.4s, b6.4s; \
+ rev64 b7.4s, b7.4s; \
+ ext b0.16b, b0.16b, b0.16b, #8; \
+ ext b1.16b, b1.16b, b1.16b, #8; \
+ ext b2.16b, b2.16b, b2.16b, #8; \
+ ext b3.16b, b3.16b, b3.16b, #8; \
+ ext b4.16b, b4.16b, b4.16b, #8; \
+ ext b5.16b, b5.16b, b5.16b, #8; \
+ ext b6.16b, b6.16b, b6.16b, #8; \
+ ext b7.16b, b7.16b, b7.16b, #8; \
+ rev32 b0.16b, b0.16b; \
+ rev32 b1.16b, b1.16b; \
+ rev32 b2.16b, b2.16b; \
+ rev32 b3.16b, b3.16b; \
+ rev32 b4.16b, b4.16b; \
+ rev32 b5.16b, b5.16b; \
+ rev32 b6.16b, b6.16b; \
+ rev32 b7.16b, b7.16b;
+
+#define SM4_CRYPT_BLK8(b0, b1, b2, b3, b4, b5, b6, b7) \
+ rev32 b0.16b, b0.16b; \
+ rev32 b1.16b, b1.16b; \
+ rev32 b2.16b, b2.16b; \
+ rev32 b3.16b, b3.16b; \
+ rev32 b4.16b, b4.16b; \
+ rev32 b5.16b, b5.16b; \
+ rev32 b6.16b, b6.16b; \
+ rev32 b7.16b, b7.16b; \
+ SM4_CRYPT_BLK8_BE(b0, b1, b2, b3, b4, b5, b6, b7);
@@ -10,10 +10,12 @@
#include <linux/linkage.h>
#include <asm/assembler.h>
+#include "sm4-ce-asm.h"
.arch armv8-a+crypto
-.irp b, 0, 1, 2, 3, 4, 5, 6, 7, 16, 20, 24, 25, 26, 27, 28, 29, 30, 31
+.irp b, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, \
+ 20, 24, 25, 26, 27, 28, 29, 30, 31
.set .Lv\b\().4s, \b
.endr
@@ -34,174 +36,6 @@
#define RIV v20
-/* Helper macros. */
-
-#define PREPARE \
- ld1 {v24.16b-v27.16b}, [x0], #64; \
- ld1 {v28.16b-v31.16b}, [x0];
-
-#define SM4_CRYPT_BLK(b0) \
- rev32 b0.16b, b0.16b; \
- sm4e b0.4s, v24.4s; \
- sm4e b0.4s, v25.4s; \
- sm4e b0.4s, v26.4s; \
- sm4e b0.4s, v27.4s; \
- sm4e b0.4s, v28.4s; \
- sm4e b0.4s, v29.4s; \
- sm4e b0.4s, v30.4s; \
- sm4e b0.4s, v31.4s; \
- rev64 b0.4s, b0.4s; \
- ext b0.16b, b0.16b, b0.16b, #8; \
- rev32 b0.16b, b0.16b;
-
-#define SM4_CRYPT_BLK4(b0, b1, b2, b3) \
- rev32 b0.16b, b0.16b; \
- rev32 b1.16b, b1.16b; \
- rev32 b2.16b, b2.16b; \
- rev32 b3.16b, b3.16b; \
- sm4e b0.4s, v24.4s; \
- sm4e b1.4s, v24.4s; \
- sm4e b2.4s, v24.4s; \
- sm4e b3.4s, v24.4s; \
- sm4e b0.4s, v25.4s; \
- sm4e b1.4s, v25.4s; \
- sm4e b2.4s, v25.4s; \
- sm4e b3.4s, v25.4s; \
- sm4e b0.4s, v26.4s; \
- sm4e b1.4s, v26.4s; \
- sm4e b2.4s, v26.4s; \
- sm4e b3.4s, v26.4s; \
- sm4e b0.4s, v27.4s; \
- sm4e b1.4s, v27.4s; \
- sm4e b2.4s, v27.4s; \
- sm4e b3.4s, v27.4s; \
- sm4e b0.4s, v28.4s; \
- sm4e b1.4s, v28.4s; \
- sm4e b2.4s, v28.4s; \
- sm4e b3.4s, v28.4s; \
- sm4e b0.4s, v29.4s; \
- sm4e b1.4s, v29.4s; \
- sm4e b2.4s, v29.4s; \
- sm4e b3.4s, v29.4s; \
- sm4e b0.4s, v30.4s; \
- sm4e b1.4s, v30.4s; \
- sm4e b2.4s, v30.4s; \
- sm4e b3.4s, v30.4s; \
- sm4e b0.4s, v31.4s; \
- sm4e b1.4s, v31.4s; \
- sm4e b2.4s, v31.4s; \
- sm4e b3.4s, v31.4s; \
- rev64 b0.4s, b0.4s; \
- rev64 b1.4s, b1.4s; \
- rev64 b2.4s, b2.4s; \
- rev64 b3.4s, b3.4s; \
- ext b0.16b, b0.16b, b0.16b, #8; \
- ext b1.16b, b1.16b, b1.16b, #8; \
- ext b2.16b, b2.16b, b2.16b, #8; \
- ext b3.16b, b3.16b, b3.16b, #8; \
- rev32 b0.16b, b0.16b; \
- rev32 b1.16b, b1.16b; \
- rev32 b2.16b, b2.16b; \
- rev32 b3.16b, b3.16b;
-
-#define SM4_CRYPT_BLK8(b0, b1, b2, b3, b4, b5, b6, b7) \
- rev32 b0.16b, b0.16b; \
- rev32 b1.16b, b1.16b; \
- rev32 b2.16b, b2.16b; \
- rev32 b3.16b, b3.16b; \
- rev32 b4.16b, b4.16b; \
- rev32 b5.16b, b5.16b; \
- rev32 b6.16b, b6.16b; \
- rev32 b7.16b, b7.16b; \
- sm4e b0.4s, v24.4s; \
- sm4e b1.4s, v24.4s; \
- sm4e b2.4s, v24.4s; \
- sm4e b3.4s, v24.4s; \
- sm4e b4.4s, v24.4s; \
- sm4e b5.4s, v24.4s; \
- sm4e b6.4s, v24.4s; \
- sm4e b7.4s, v24.4s; \
- sm4e b0.4s, v25.4s; \
- sm4e b1.4s, v25.4s; \
- sm4e b2.4s, v25.4s; \
- sm4e b3.4s, v25.4s; \
- sm4e b4.4s, v25.4s; \
- sm4e b5.4s, v25.4s; \
- sm4e b6.4s, v25.4s; \
- sm4e b7.4s, v25.4s; \
- sm4e b0.4s, v26.4s; \
- sm4e b1.4s, v26.4s; \
- sm4e b2.4s, v26.4s; \
- sm4e b3.4s, v26.4s; \
- sm4e b4.4s, v26.4s; \
- sm4e b5.4s, v26.4s; \
- sm4e b6.4s, v26.4s; \
- sm4e b7.4s, v26.4s; \
- sm4e b0.4s, v27.4s; \
- sm4e b1.4s, v27.4s; \
- sm4e b2.4s, v27.4s; \
- sm4e b3.4s, v27.4s; \
- sm4e b4.4s, v27.4s; \
- sm4e b5.4s, v27.4s; \
- sm4e b6.4s, v27.4s; \
- sm4e b7.4s, v27.4s; \
- sm4e b0.4s, v28.4s; \
- sm4e b1.4s, v28.4s; \
- sm4e b2.4s, v28.4s; \
- sm4e b3.4s, v28.4s; \
- sm4e b4.4s, v28.4s; \
- sm4e b5.4s, v28.4s; \
- sm4e b6.4s, v28.4s; \
- sm4e b7.4s, v28.4s; \
- sm4e b0.4s, v29.4s; \
- sm4e b1.4s, v29.4s; \
- sm4e b2.4s, v29.4s; \
- sm4e b3.4s, v29.4s; \
- sm4e b4.4s, v29.4s; \
- sm4e b5.4s, v29.4s; \
- sm4e b6.4s, v29.4s; \
- sm4e b7.4s, v29.4s; \
- sm4e b0.4s, v30.4s; \
- sm4e b1.4s, v30.4s; \
- sm4e b2.4s, v30.4s; \
- sm4e b3.4s, v30.4s; \
- sm4e b4.4s, v30.4s; \
- sm4e b5.4s, v30.4s; \
- sm4e b6.4s, v30.4s; \
- sm4e b7.4s, v30.4s; \
- sm4e b0.4s, v31.4s; \
- sm4e b1.4s, v31.4s; \
- sm4e b2.4s, v31.4s; \
- sm4e b3.4s, v31.4s; \
- sm4e b4.4s, v31.4s; \
- sm4e b5.4s, v31.4s; \
- sm4e b6.4s, v31.4s; \
- sm4e b7.4s, v31.4s; \
- rev64 b0.4s, b0.4s; \
- rev64 b1.4s, b1.4s; \
- rev64 b2.4s, b2.4s; \
- rev64 b3.4s, b3.4s; \
- rev64 b4.4s, b4.4s; \
- rev64 b5.4s, b5.4s; \
- rev64 b6.4s, b6.4s; \
- rev64 b7.4s, b7.4s; \
- ext b0.16b, b0.16b, b0.16b, #8; \
- ext b1.16b, b1.16b, b1.16b, #8; \
- ext b2.16b, b2.16b, b2.16b, #8; \
- ext b3.16b, b3.16b, b3.16b, #8; \
- ext b4.16b, b4.16b, b4.16b, #8; \
- ext b5.16b, b5.16b, b5.16b, #8; \
- ext b6.16b, b6.16b, b6.16b, #8; \
- ext b7.16b, b7.16b, b7.16b, #8; \
- rev32 b0.16b, b0.16b; \
- rev32 b1.16b, b1.16b; \
- rev32 b2.16b, b2.16b; \
- rev32 b3.16b, b3.16b; \
- rev32 b4.16b, b4.16b; \
- rev32 b5.16b, b5.16b; \
- rev32 b6.16b, b6.16b; \
- rev32 b7.16b, b7.16b;
-
.align 3
SYM_FUNC_START(sm4_ce_expand_key)
@@ -268,7 +102,7 @@ SYM_FUNC_START(sm4_ce_crypt_block)
* x1: dst
* x2: src
*/
- PREPARE;
+ SM4_PREPARE(x0)
ld1 {v0.16b}, [x2];
SM4_CRYPT_BLK(v0);
@@ -285,7 +119,7 @@ SYM_FUNC_START(sm4_ce_crypt)
* x2: src
* w3: nblocks
*/
- PREPARE;
+ SM4_PREPARE(x0)
.Lcrypt_loop_blk:
sub w3, w3, #8;
@@ -337,26 +171,50 @@ SYM_FUNC_START(sm4_ce_cbc_enc)
* x3: iv (big endian, 128 bit)
* w4: nblocks
*/
- PREPARE;
+ SM4_PREPARE(x0)
+
+ ld1 {RIV.16b}, [x3]
+
+.Lcbc_enc_loop_4x:
+ cmp w4, #4
+ blt .Lcbc_enc_loop_1x
+
+ sub w4, w4, #4
- ld1 {RIV.16b}, [x3];
+ ld1 {v0.16b-v3.16b}, [x2], #64
-.Lcbc_enc_loop:
- sub w4, w4, #1;
+ eor v0.16b, v0.16b, RIV.16b
+ SM4_CRYPT_BLK(v0)
+ eor v1.16b, v1.16b, v0.16b
+ SM4_CRYPT_BLK(v1)
+ eor v2.16b, v2.16b, v1.16b
+ SM4_CRYPT_BLK(v2)
+ eor v3.16b, v3.16b, v2.16b
+ SM4_CRYPT_BLK(v3)
- ld1 {RTMP0.16b}, [x2], #16;
- eor RIV.16b, RIV.16b, RTMP0.16b;
+ st1 {v0.16b-v3.16b}, [x1], #64
+ mov RIV.16b, v3.16b
- SM4_CRYPT_BLK(RIV);
+ cbz w4, .Lcbc_enc_end
+ b .Lcbc_enc_loop_4x
- st1 {RIV.16b}, [x1], #16;
+.Lcbc_enc_loop_1x:
+ sub w4, w4, #1
- cbnz w4, .Lcbc_enc_loop;
+ ld1 {v0.16b}, [x2], #16
+ eor RIV.16b, RIV.16b, v0.16b
+ SM4_CRYPT_BLK(RIV)
+
+ st1 {RIV.16b}, [x1], #16
+
+ cbnz w4, .Lcbc_enc_loop_1x
+
+.Lcbc_enc_end:
/* store new IV */
- st1 {RIV.16b}, [x3];
+ st1 {RIV.16b}, [x3]
- ret;
+ ret
SYM_FUNC_END(sm4_ce_cbc_enc)
.align 3
@@ -368,79 +226,93 @@ SYM_FUNC_START(sm4_ce_cbc_dec)
* x3: iv (big endian, 128 bit)
* w4: nblocks
*/
- PREPARE;
+ SM4_PREPARE(x0)
- ld1 {RIV.16b}, [x3];
+ ld1 {RIV.16b}, [x3]
-.Lcbc_loop_blk:
- sub w4, w4, #8;
- tbnz w4, #31, .Lcbc_tail8;
+.Lcbc_dec_loop_8x:
+ sub w4, w4, #8
+ tbnz w4, #31, .Lcbc_dec_4x
- ld1 {v0.16b-v3.16b}, [x2], #64;
- ld1 {v4.16b-v7.16b}, [x2];
+ ld1 {v0.16b-v3.16b}, [x2], #64
+ ld1 {v4.16b-v7.16b}, [x2], #64
- SM4_CRYPT_BLK8(v0, v1, v2, v3, v4, v5, v6, v7);
+ rev32 v8.16b, v0.16b
+ rev32 v9.16b, v1.16b
+ rev32 v10.16b, v2.16b
+ rev32 v11.16b, v3.16b
+ rev32 v12.16b, v4.16b
+ rev32 v13.16b, v5.16b
+ rev32 v14.16b, v6.16b
+ rev32 v15.16b, v7.16b
- sub x2, x2, #64;
- eor v0.16b, v0.16b, RIV.16b;
- ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64;
- eor v1.16b, v1.16b, RTMP0.16b;
- eor v2.16b, v2.16b, RTMP1.16b;
- eor v3.16b, v3.16b, RTMP2.16b;
- st1 {v0.16b-v3.16b}, [x1], #64;
+ SM4_CRYPT_BLK8_BE(v8, v9, v10, v11, v12, v13, v14, v15)
- eor v4.16b, v4.16b, RTMP3.16b;
- ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64;
- eor v5.16b, v5.16b, RTMP0.16b;
- eor v6.16b, v6.16b, RTMP1.16b;
- eor v7.16b, v7.16b, RTMP2.16b;
+ eor v8.16b, v8.16b, RIV.16b
+ eor v9.16b, v9.16b, v0.16b
+ eor v10.16b, v10.16b, v1.16b
+ eor v11.16b, v11.16b, v2.16b
+ eor v12.16b, v12.16b, v3.16b
+ eor v13.16b, v13.16b, v4.16b
+ eor v14.16b, v14.16b, v5.16b
+ eor v15.16b, v15.16b, v6.16b
- mov RIV.16b, RTMP3.16b;
- st1 {v4.16b-v7.16b}, [x1], #64;
+ st1 {v8.16b-v11.16b}, [x1], #64
+ st1 {v12.16b-v15.16b}, [x1], #64
- cbz w4, .Lcbc_end;
- b .Lcbc_loop_blk;
+ mov RIV.16b, v7.16b
-.Lcbc_tail8:
- add w4, w4, #8;
- cmp w4, #4;
- blt .Lcbc_tail4;
+ cbz w4, .Lcbc_dec_end
+ b .Lcbc_dec_loop_8x
- sub w4, w4, #4;
+.Lcbc_dec_4x:
+ add w4, w4, #8
+ cmp w4, #4
+ blt .Lcbc_dec_loop_1x
- ld1 {v0.16b-v3.16b}, [x2];
+ sub w4, w4, #4
- SM4_CRYPT_BLK4(v0, v1, v2, v3);
+ ld1 {v0.16b-v3.16b}, [x2], #64
- eor v0.16b, v0.16b, RIV.16b;
- ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64;
- eor v1.16b, v1.16b, RTMP0.16b;
- eor v2.16b, v2.16b, RTMP1.16b;
- eor v3.16b, v3.16b, RTMP2.16b;
+ rev32 v8.16b, v0.16b
+ rev32 v9.16b, v1.16b
+ rev32 v10.16b, v2.16b
+ rev32 v11.16b, v3.16b
- mov RIV.16b, RTMP3.16b;
- st1 {v0.16b-v3.16b}, [x1], #64;
+ SM4_CRYPT_BLK4_BE(v8, v9, v10, v11)
- cbz w4, .Lcbc_end;
+ eor v8.16b, v8.16b, RIV.16b
+ eor v9.16b, v9.16b, v0.16b
+ eor v10.16b, v10.16b, v1.16b
+ eor v11.16b, v11.16b, v2.16b
-.Lcbc_tail4:
- sub w4, w4, #1;
+ st1 {v8.16b-v11.16b}, [x1], #64
- ld1 {v0.16b}, [x2];
+ mov RIV.16b, v3.16b
- SM4_CRYPT_BLK(v0);
+ cbz w4, .Lcbc_dec_end
- eor v0.16b, v0.16b, RIV.16b;
- ld1 {RIV.16b}, [x2], #16;
- st1 {v0.16b}, [x1], #16;
+.Lcbc_dec_loop_1x:
+ sub w4, w4, #1
+
+ ld1 {v0.16b}, [x2], #16
+
+ rev32 v8.16b, v0.16b
+
+ SM4_CRYPT_BLK_BE(v8)
- cbnz w4, .Lcbc_tail4;
+ eor v8.16b, v8.16b, RIV.16b
+ st1 {v8.16b}, [x1], #16
-.Lcbc_end:
+ mov RIV.16b, v0.16b
+
+ cbnz w4, .Lcbc_dec_loop_1x
+
+.Lcbc_dec_end:
/* store new IV */
- st1 {RIV.16b}, [x3];
+ st1 {RIV.16b}, [x3]
- ret;
+ ret
SYM_FUNC_END(sm4_ce_cbc_dec)
.align 3
@@ -452,25 +324,57 @@ SYM_FUNC_START(sm4_ce_cfb_enc)
* x3: iv (big endian, 128 bit)
* w4: nblocks
*/
- PREPARE;
+ SM4_PREPARE(x0)
+
+ ld1 {RIV.16b}, [x3]
+
+.Lcfb_enc_loop_4x:
+ cmp w4, #4
+ blt .Lcfb_enc_loop_1x
+
+ sub w4, w4, #4
+
+ ld1 {v0.16b-v3.16b}, [x2], #64
+
+ rev32 v8.16b, RIV.16b
+ SM4_CRYPT_BLK_BE(v8)
+ eor v0.16b, v0.16b, v8.16b
+
+ rev32 v8.16b, v0.16b
+ SM4_CRYPT_BLK_BE(v8)
+ eor v1.16b, v1.16b, v8.16b
+
+ rev32 v8.16b, v1.16b
+ SM4_CRYPT_BLK_BE(v8)
+ eor v2.16b, v2.16b, v8.16b
+
+ rev32 v8.16b, v2.16b
+ SM4_CRYPT_BLK_BE(v8)
+ eor v3.16b, v3.16b, v8.16b
- ld1 {RIV.16b}, [x3];
+ st1 {v0.16b-v3.16b}, [x1], #64
+ mov RIV.16b, v3.16b
-.Lcfb_enc_loop:
- sub w4, w4, #1;
+ cbz w4, .Lcfb_enc_end
+ b .Lcfb_enc_loop_4x
- SM4_CRYPT_BLK(RIV);
+.Lcfb_enc_loop_1x:
+ sub w4, w4, #1
- ld1 {RTMP0.16b}, [x2], #16;
- eor RIV.16b, RIV.16b, RTMP0.16b;
- st1 {RIV.16b}, [x1], #16;
+ ld1 {v0.16b}, [x2], #16
- cbnz w4, .Lcfb_enc_loop;
+ SM4_CRYPT_BLK(RIV)
+ eor RIV.16b, RIV.16b, v0.16b
+ st1 {RIV.16b}, [x1], #16
+
+ cbnz w4, .Lcfb_enc_loop_1x
+
+.Lcfb_enc_end:
/* store new IV */
- st1 {RIV.16b}, [x3];
+ st1 {RIV.16b}, [x3]
- ret;
+ ret
SYM_FUNC_END(sm4_ce_cfb_enc)
.align 3
@@ -482,79 +386,91 @@ SYM_FUNC_START(sm4_ce_cfb_dec)
* x3: iv (big endian, 128 bit)
* w4: nblocks
*/
- PREPARE;
+ SM4_PREPARE(x0)
- ld1 {v0.16b}, [x3];
+ ld1 {RIV.16b}, [x3]
-.Lcfb_loop_blk:
- sub w4, w4, #8;
- tbnz w4, #31, .Lcfb_tail8;
+.Lcfb_dec_loop_8x:
+ sub w4, w4, #8
+ tbnz w4, #31, .Lcfb_dec_4x
- ld1 {v1.16b, v2.16b, v3.16b}, [x2], #48;
- ld1 {v4.16b-v7.16b}, [x2];
+ ld1 {v0.16b-v3.16b}, [x2], #64
+ ld1 {v4.16b-v7.16b}, [x2], #64
- SM4_CRYPT_BLK8(v0, v1, v2, v3, v4, v5, v6, v7);
+ rev32 v8.16b, RIV.16b
+ rev32 v9.16b, v0.16b
+ rev32 v10.16b, v1.16b
+ rev32 v11.16b, v2.16b
+ rev32 v12.16b, v3.16b
+ rev32 v13.16b, v4.16b
+ rev32 v14.16b, v5.16b
+ rev32 v15.16b, v6.16b
- sub x2, x2, #48;
- ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64;
- eor v0.16b, v0.16b, RTMP0.16b;
- eor v1.16b, v1.16b, RTMP1.16b;
- eor v2.16b, v2.16b, RTMP2.16b;
- eor v3.16b, v3.16b, RTMP3.16b;
- st1 {v0.16b-v3.16b}, [x1], #64;
+ SM4_CRYPT_BLK8_BE(v8, v9, v10, v11, v12, v13, v14, v15)
- ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64;
- eor v4.16b, v4.16b, RTMP0.16b;
- eor v5.16b, v5.16b, RTMP1.16b;
- eor v6.16b, v6.16b, RTMP2.16b;
- eor v7.16b, v7.16b, RTMP3.16b;
- st1 {v4.16b-v7.16b}, [x1], #64;
+ mov RIV.16b, v7.16b
- mov v0.16b, RTMP3.16b;
+ eor v0.16b, v0.16b, v8.16b
+ eor v1.16b, v1.16b, v9.16b
+ eor v2.16b, v2.16b, v10.16b
+ eor v3.16b, v3.16b, v11.16b
+ eor v4.16b, v4.16b, v12.16b
+ eor v5.16b, v5.16b, v13.16b
+ eor v6.16b, v6.16b, v14.16b
+ eor v7.16b, v7.16b, v15.16b
- cbz w4, .Lcfb_end;
- b .Lcfb_loop_blk;
+ st1 {v0.16b-v3.16b}, [x1], #64
+ st1 {v4.16b-v7.16b}, [x1], #64
-.Lcfb_tail8:
- add w4, w4, #8;
- cmp w4, #4;
- blt .Lcfb_tail4;
+ cbz w4, .Lcfb_dec_end
+ b .Lcfb_dec_loop_8x
- sub w4, w4, #4;
+.Lcfb_dec_4x:
+ add w4, w4, #8
+ cmp w4, #4
+ blt .Lcfb_dec_loop_1x
- ld1 {v1.16b, v2.16b, v3.16b}, [x2];
+ sub w4, w4, #4
- SM4_CRYPT_BLK4(v0, v1, v2, v3);
+ ld1 {v0.16b-v3.16b}, [x2], #64
- ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64;
- eor v0.16b, v0.16b, RTMP0.16b;
- eor v1.16b, v1.16b, RTMP1.16b;
- eor v2.16b, v2.16b, RTMP2.16b;
- eor v3.16b, v3.16b, RTMP3.16b;
- st1 {v0.16b-v3.16b}, [x1], #64;
+ rev32 v8.16b, RIV.16b
+ rev32 v9.16b, v0.16b
+ rev32 v10.16b, v1.16b
+ rev32 v11.16b, v2.16b
- mov v0.16b, RTMP3.16b;
+ SM4_CRYPT_BLK4_BE(v8, v9, v10, v11)
- cbz w4, .Lcfb_end;
+ mov RIV.16b, v3.16b
-.Lcfb_tail4:
- sub w4, w4, #1;
+ eor v0.16b, v0.16b, v8.16b
+ eor v1.16b, v1.16b, v9.16b
+ eor v2.16b, v2.16b, v10.16b
+ eor v3.16b, v3.16b, v11.16b
- SM4_CRYPT_BLK(v0);
+ st1 {v0.16b-v3.16b}, [x1], #64
- ld1 {RTMP0.16b}, [x2], #16;
- eor v0.16b, v0.16b, RTMP0.16b;
- st1 {v0.16b}, [x1], #16;
+ cbz w4, .Lcfb_dec_end
+
+.Lcfb_dec_loop_1x:
+ sub w4, w4, #1
+
+ ld1 {v0.16b}, [x2], #16
- mov v0.16b, RTMP0.16b;
+ SM4_CRYPT_BLK(RIV)
- cbnz w4, .Lcfb_tail4;
+ eor RIV.16b, RIV.16b, v0.16b
+ st1 {RIV.16b}, [x1], #16
-.Lcfb_end:
+ mov RIV.16b, v0.16b
+
+ cbnz w4, .Lcfb_dec_loop_1x
+
+.Lcfb_dec_end:
/* store new IV */
- st1 {v0.16b}, [x3];
+ st1 {RIV.16b}, [x3]
- ret;
+ ret
SYM_FUNC_END(sm4_ce_cfb_dec)
.align 3
@@ -566,95 +482,99 @@ SYM_FUNC_START(sm4_ce_ctr_enc)
* x3: ctr (big endian, 128 bit)
* w4: nblocks
*/
- PREPARE;
+ SM4_PREPARE(x0)
- ldp x7, x8, [x3];
- rev x7, x7;
- rev x8, x8;
+ ldp x7, x8, [x3]
+ rev x7, x7
+ rev x8, x8
-.Lctr_loop_blk:
- sub w4, w4, #8;
- tbnz w4, #31, .Lctr_tail8;
+.Lctr_loop_8x:
+ sub w4, w4, #8
+ tbnz w4, #31, .Lctr_4x
-#define inc_le128(vctr) \
- mov vctr.d[1], x8; \
- mov vctr.d[0], x7; \
- adds x8, x8, #1; \
- adc x7, x7, xzr; \
- rev64 vctr.16b, vctr.16b;
+#define inc_le128(vctr) \
+ mov vctr.d[1], x8; \
+ mov vctr.d[0], x7; \
+ adds x8, x8, #1; \
+ rev64 vctr.16b, vctr.16b; \
+ adc x7, x7, xzr;
/* construct CTRs */
- inc_le128(v0); /* +0 */
- inc_le128(v1); /* +1 */
- inc_le128(v2); /* +2 */
- inc_le128(v3); /* +3 */
- inc_le128(v4); /* +4 */
- inc_le128(v5); /* +5 */
- inc_le128(v6); /* +6 */
- inc_le128(v7); /* +7 */
+ inc_le128(v0) /* +0 */
+ inc_le128(v1) /* +1 */
+ inc_le128(v2) /* +2 */
+ inc_le128(v3) /* +3 */
+ inc_le128(v4) /* +4 */
+ inc_le128(v5) /* +5 */
+ inc_le128(v6) /* +6 */
+ inc_le128(v7) /* +7 */
+
+ ld1 {v8.16b-v11.16b}, [x2], #64
+ ld1 {v12.16b-v15.16b}, [x2], #64
+
+ SM4_CRYPT_BLK8(v0, v1, v2, v3, v4, v5, v6, v7)
+
+ eor v0.16b, v0.16b, v8.16b
+ eor v1.16b, v1.16b, v9.16b
+ eor v2.16b, v2.16b, v10.16b
+ eor v3.16b, v3.16b, v11.16b
+ eor v4.16b, v4.16b, v12.16b
+ eor v5.16b, v5.16b, v13.16b
+ eor v6.16b, v6.16b, v14.16b
+ eor v7.16b, v7.16b, v15.16b
+
+ st1 {v0.16b-v3.16b}, [x1], #64
+ st1 {v4.16b-v7.16b}, [x1], #64
+
+ cbz w4, .Lctr_end
+ b .Lctr_loop_8x
+
+.Lctr_4x:
+ add w4, w4, #8
+ cmp w4, #4
+ blt .Lctr_loop_1x
+
+ sub w4, w4, #4
- SM4_CRYPT_BLK8(v0, v1, v2, v3, v4, v5, v6, v7);
-
- ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64;
- eor v0.16b, v0.16b, RTMP0.16b;
- eor v1.16b, v1.16b, RTMP1.16b;
- eor v2.16b, v2.16b, RTMP2.16b;
- eor v3.16b, v3.16b, RTMP3.16b;
- st1 {v0.16b-v3.16b}, [x1], #64;
+ /* construct CTRs */
+ inc_le128(v0) /* +0 */
+ inc_le128(v1) /* +1 */
+ inc_le128(v2) /* +2 */
+ inc_le128(v3) /* +3 */
- ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64;
- eor v4.16b, v4.16b, RTMP0.16b;
- eor v5.16b, v5.16b, RTMP1.16b;
- eor v6.16b, v6.16b, RTMP2.16b;
- eor v7.16b, v7.16b, RTMP3.16b;
- st1 {v4.16b-v7.16b}, [x1], #64;
+ ld1 {v8.16b-v11.16b}, [x2], #64
- cbz w4, .Lctr_end;
- b .Lctr_loop_blk;
+ SM4_CRYPT_BLK4(v0, v1, v2, v3)
-.Lctr_tail8:
- add w4, w4, #8;
- cmp w4, #4;
- blt .Lctr_tail4;
+ eor v0.16b, v0.16b, v8.16b
+ eor v1.16b, v1.16b, v9.16b
+ eor v2.16b, v2.16b, v10.16b
+ eor v3.16b, v3.16b, v11.16b
- sub w4, w4, #4;
+ st1 {v0.16b-v3.16b}, [x1], #64
- /* construct CTRs */
- inc_le128(v0); /* +0 */
- inc_le128(v1); /* +1 */
- inc_le128(v2); /* +2 */
- inc_le128(v3); /* +3 */
+ cbz w4, .Lctr_end
- SM4_CRYPT_BLK4(v0, v1, v2, v3);
-
- ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64;
- eor v0.16b, v0.16b, RTMP0.16b;
- eor v1.16b, v1.16b, RTMP1.16b;
- eor v2.16b, v2.16b, RTMP2.16b;
- eor v3.16b, v3.16b, RTMP3.16b;
- st1 {v0.16b-v3.16b}, [x1], #64;
-
- cbz w4, .Lctr_end;
-
-.Lctr_tail4:
- sub w4, w4, #1;
+.Lctr_loop_1x:
+ sub w4, w4, #1
/* construct CTRs */
- inc_le128(v0);
+ inc_le128(v0)
- SM4_CRYPT_BLK(v0);
+ ld1 {v8.16b}, [x2], #16
- ld1 {RTMP0.16b}, [x2], #16;
- eor v0.16b, v0.16b, RTMP0.16b;
- st1 {v0.16b}, [x1], #16;
+ SM4_CRYPT_BLK(v0)
+
+ eor v0.16b, v0.16b, v8.16b
+ st1 {v0.16b}, [x1], #16
- cbnz w4, .Lctr_tail4;
+ cbnz w4, .Lctr_loop_1x
.Lctr_end:
/* store new CTR */
- rev x7, x7;
- rev x8, x8;
- stp x7, x8, [x3];
+ rev x7, x7
+ rev x8, x8
+ stp x7, x8, [x3]
- ret;
+ ret
SYM_FUNC_END(sm4_ce_ctr_enc)
@@ -26,9 +26,9 @@ asmlinkage void sm4_ce_crypt_block(const u32 *rkey, u8 *dst, const u8 *src);
asmlinkage void sm4_ce_crypt(const u32 *rkey, u8 *dst, const u8 *src,
unsigned int nblks);
asmlinkage void sm4_ce_cbc_enc(const u32 *rkey, u8 *dst, const u8 *src,
- u8 *iv, unsigned int nblks);
+ u8 *iv, unsigned int nblocks);
asmlinkage void sm4_ce_cbc_dec(const u32 *rkey, u8 *dst, const u8 *src,
- u8 *iv, unsigned int nblks);
+ u8 *iv, unsigned int nblocks);
asmlinkage void sm4_ce_cfb_enc(const u32 *rkey, u8 *dst, const u8 *src,
u8 *iv, unsigned int nblks);
asmlinkage void sm4_ce_cfb_dec(const u32 *rkey, u8 *dst, const u8 *src,
@@ -94,66 +94,56 @@ static int sm4_ecb_decrypt(struct skcipher_request *req)
return sm4_ecb_do_crypt(req, ctx->rkey_dec);
}
-static int sm4_cbc_encrypt(struct skcipher_request *req)
+static int sm4_cbc_crypt(struct skcipher_request *req,
+ struct sm4_ctx *ctx, bool encrypt)
{
- struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
- struct sm4_ctx *ctx = crypto_skcipher_ctx(tfm);
struct skcipher_walk walk;
unsigned int nbytes;
int err;
err = skcipher_walk_virt(&walk, req, false);
+ if (err)
+ return err;
while ((nbytes = walk.nbytes) > 0) {
const u8 *src = walk.src.virt.addr;
u8 *dst = walk.dst.virt.addr;
- unsigned int nblks;
+ unsigned int nblocks;
- kernel_neon_begin();
+ nblocks = nbytes / SM4_BLOCK_SIZE;
+ if (nblocks) {
+ kernel_neon_begin();
- nblks = BYTES2BLKS(nbytes);
- if (nblks) {
- sm4_ce_cbc_enc(ctx->rkey_enc, dst, src, walk.iv, nblks);
- nbytes -= nblks * SM4_BLOCK_SIZE;
- }
+ if (encrypt)
+ sm4_ce_cbc_enc(ctx->rkey_enc, dst, src,
+ walk.iv, nblocks);
+ else
+ sm4_ce_cbc_dec(ctx->rkey_dec, dst, src,
+ walk.iv, nblocks);
- kernel_neon_end();
+ kernel_neon_end();
+ }
- err = skcipher_walk_done(&walk, nbytes);
+ err = skcipher_walk_done(&walk, nbytes % SM4_BLOCK_SIZE);
}
return err;
}
-static int sm4_cbc_decrypt(struct skcipher_request *req)
+static int sm4_cbc_encrypt(struct skcipher_request *req)
{
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
struct sm4_ctx *ctx = crypto_skcipher_ctx(tfm);
- struct skcipher_walk walk;
- unsigned int nbytes;
- int err;
-
- err = skcipher_walk_virt(&walk, req, false);
- while ((nbytes = walk.nbytes) > 0) {
- const u8 *src = walk.src.virt.addr;
- u8 *dst = walk.dst.virt.addr;
- unsigned int nblks;
-
- kernel_neon_begin();
-
- nblks = BYTES2BLKS(nbytes);
- if (nblks) {
- sm4_ce_cbc_dec(ctx->rkey_dec, dst, src, walk.iv, nblks);
- nbytes -= nblks * SM4_BLOCK_SIZE;
- }
-
- kernel_neon_end();
+ return sm4_cbc_crypt(req, ctx, true);
+}
- err = skcipher_walk_done(&walk, nbytes);
- }
+static int sm4_cbc_decrypt(struct skcipher_request *req)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+ struct sm4_ctx *ctx = crypto_skcipher_ctx(tfm);
- return err;
+ return sm4_cbc_crypt(req, ctx, false);
}
static int sm4_cfb_encrypt(struct skcipher_request *req)
This patch does not add new features, but only refactors and simplifies the implementation of the Crypto Extension acceleration of the SM4 algorithm: Extract the macro optimized by SM4 Crypto Extension for reuse in the subsequent optimization of CCM/GCM modes. Encryption in CBC and CFB modes processes four blocks at a time instead of one, allowing the ld1 instruction to load 64 bytes of data at a time, which will reduces unnecessary memory accesses. CBC/CFB/CTR makes full use of free registers to reduce redundant memory accesses, and rearranges some instructions to improve out-of-order execution capabilities. Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com> --- arch/arm64/crypto/sm4-ce-asm.h | 209 +++++++++++ arch/arm64/crypto/sm4-ce-core.S | 646 ++++++++++++++------------------ arch/arm64/crypto/sm4-ce-glue.c | 64 ++-- 3 files changed, 519 insertions(+), 400 deletions(-) create mode 100644 arch/arm64/crypto/sm4-ce-asm.h