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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/arm64/crypto/aes-ce.S
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm64/crypto/aes-ce.S')
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1 files changed, 152 insertions, 0 deletions
diff --git a/arch/arm64/crypto/aes-ce.S b/arch/arm64/crypto/aes-ce.S
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+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * linux/arch/arm64/crypto/aes-ce.S - AES cipher for ARMv8 with
+ * Crypto Extensions
+ *
+ * Copyright (C) 2013 - 2017 Linaro Ltd <ard.biesheuvel@linaro.org>
+ */
+
+#include <linux/linkage.h>
+#include <asm/assembler.h>
+
+#define AES_FUNC_START(func) SYM_FUNC_START(ce_ ## func)
+#define AES_FUNC_END(func) SYM_FUNC_END(ce_ ## func)
+
+ .arch armv8-a+crypto
+
+ xtsmask .req v16
+ cbciv .req v16
+ vctr .req v16
+
+ .macro xts_reload_mask, tmp
+ .endm
+
+ .macro xts_cts_skip_tw, reg, lbl
+ .endm
+
+ /* preload all round keys */
+ .macro load_round_keys, rounds, rk
+ cmp \rounds, #12
+ blo 2222f /* 128 bits */
+ beq 1111f /* 192 bits */
+ ld1 {v17.4s-v18.4s}, [\rk], #32
+1111: ld1 {v19.4s-v20.4s}, [\rk], #32
+2222: ld1 {v21.4s-v24.4s}, [\rk], #64
+ ld1 {v25.4s-v28.4s}, [\rk], #64
+ ld1 {v29.4s-v31.4s}, [\rk]
+ .endm
+
+ /* prepare for encryption with key in rk[] */
+ .macro enc_prepare, rounds, rk, temp
+ mov \temp, \rk
+ load_round_keys \rounds, \temp
+ .endm
+
+ /* prepare for encryption (again) but with new key in rk[] */
+ .macro enc_switch_key, rounds, rk, temp
+ mov \temp, \rk
+ load_round_keys \rounds, \temp
+ .endm
+
+ /* prepare for decryption with key in rk[] */
+ .macro dec_prepare, rounds, rk, temp
+ mov \temp, \rk
+ load_round_keys \rounds, \temp
+ .endm
+
+ .macro do_enc_Nx, de, mc, k, i0, i1, i2, i3, i4
+ aes\de \i0\().16b, \k\().16b
+ aes\mc \i0\().16b, \i0\().16b
+ .ifnb \i1
+ aes\de \i1\().16b, \k\().16b
+ aes\mc \i1\().16b, \i1\().16b
+ .ifnb \i3
+ aes\de \i2\().16b, \k\().16b
+ aes\mc \i2\().16b, \i2\().16b
+ aes\de \i3\().16b, \k\().16b
+ aes\mc \i3\().16b, \i3\().16b
+ .ifnb \i4
+ aes\de \i4\().16b, \k\().16b
+ aes\mc \i4\().16b, \i4\().16b
+ .endif
+ .endif
+ .endif
+ .endm
+
+ /* up to 5 interleaved encryption rounds with the same round key */
+ .macro round_Nx, enc, k, i0, i1, i2, i3, i4
+ .ifc \enc, e
+ do_enc_Nx e, mc, \k, \i0, \i1, \i2, \i3, \i4
+ .else
+ do_enc_Nx d, imc, \k, \i0, \i1, \i2, \i3, \i4
+ .endif
+ .endm
+
+ /* up to 5 interleaved final rounds */
+ .macro fin_round_Nx, de, k, k2, i0, i1, i2, i3, i4
+ aes\de \i0\().16b, \k\().16b
+ .ifnb \i1
+ aes\de \i1\().16b, \k\().16b
+ .ifnb \i3
+ aes\de \i2\().16b, \k\().16b
+ aes\de \i3\().16b, \k\().16b
+ .ifnb \i4
+ aes\de \i4\().16b, \k\().16b
+ .endif
+ .endif
+ .endif
+ eor \i0\().16b, \i0\().16b, \k2\().16b
+ .ifnb \i1
+ eor \i1\().16b, \i1\().16b, \k2\().16b
+ .ifnb \i3
+ eor \i2\().16b, \i2\().16b, \k2\().16b
+ eor \i3\().16b, \i3\().16b, \k2\().16b
+ .ifnb \i4
+ eor \i4\().16b, \i4\().16b, \k2\().16b
+ .endif
+ .endif
+ .endif
+ .endm
+
+ /* up to 5 interleaved blocks */
+ .macro do_block_Nx, enc, rounds, i0, i1, i2, i3, i4
+ cmp \rounds, #12
+ blo 2222f /* 128 bits */
+ beq 1111f /* 192 bits */
+ round_Nx \enc, v17, \i0, \i1, \i2, \i3, \i4
+ round_Nx \enc, v18, \i0, \i1, \i2, \i3, \i4
+1111: round_Nx \enc, v19, \i0, \i1, \i2, \i3, \i4
+ round_Nx \enc, v20, \i0, \i1, \i2, \i3, \i4
+2222: .irp key, v21, v22, v23, v24, v25, v26, v27, v28, v29
+ round_Nx \enc, \key, \i0, \i1, \i2, \i3, \i4
+ .endr
+ fin_round_Nx \enc, v30, v31, \i0, \i1, \i2, \i3, \i4
+ .endm
+
+ .macro encrypt_block, in, rounds, t0, t1, t2
+ do_block_Nx e, \rounds, \in
+ .endm
+
+ .macro encrypt_block4x, i0, i1, i2, i3, rounds, t0, t1, t2
+ do_block_Nx e, \rounds, \i0, \i1, \i2, \i3
+ .endm
+
+ .macro encrypt_block5x, i0, i1, i2, i3, i4, rounds, t0, t1, t2
+ do_block_Nx e, \rounds, \i0, \i1, \i2, \i3, \i4
+ .endm
+
+ .macro decrypt_block, in, rounds, t0, t1, t2
+ do_block_Nx d, \rounds, \in
+ .endm
+
+ .macro decrypt_block4x, i0, i1, i2, i3, rounds, t0, t1, t2
+ do_block_Nx d, \rounds, \i0, \i1, \i2, \i3
+ .endm
+
+ .macro decrypt_block5x, i0, i1, i2, i3, i4, rounds, t0, t1, t2
+ do_block_Nx d, \rounds, \i0, \i1, \i2, \i3, \i4
+ .endm
+
+#define MAX_STRIDE 5
+
+#include "aes-modes.S"