diff options
| author | Ard Biesheuvel <ardb@kernel.org> | 2021-01-05 17:47:50 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2021-01-14 17:10:27 +1100 |
| commit | 2cc0fedb8124ac7a75d132988f1e11f5de30c61f (patch) | |
| tree | 5111925efdefb15367712a2031e620e0b4f8a9c8 /arch/x86/crypto/cast6-avx-x86_64-asm_64.S | |
| parent | 55a7e88f016873ef1717295d8460416b1ccd05a5 (diff) | |
crypto: x86/cast6 - switch to XTS template
Now that the XTS template can wrap accelerated ECB modes, it can be
used to implement CAST6 in XTS mode as well, which turns out to
be at least as fast, and sometimes even faster
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/x86/crypto/cast6-avx-x86_64-asm_64.S')
| -rw-r--r-- | arch/x86/crypto/cast6-avx-x86_64-asm_64.S | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/arch/x86/crypto/cast6-avx-x86_64-asm_64.S b/arch/x86/crypto/cast6-avx-x86_64-asm_64.S index 932a3ce32a88..0c1ea836215a 100644 --- a/arch/x86/crypto/cast6-avx-x86_64-asm_64.S +++ b/arch/x86/crypto/cast6-avx-x86_64-asm_64.S @@ -212,8 +212,6 @@ .section .rodata.cst16, "aM", @progbits, 16 .align 16 -.Lxts_gf128mul_and_shl1_mask: - .byte 0x87, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0 .Lbswap_mask: .byte 3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12 .Lbswap128_mask: @@ -440,57 +438,3 @@ SYM_FUNC_START(cast6_ctr_8way) FRAME_END ret; SYM_FUNC_END(cast6_ctr_8way) - -SYM_FUNC_START(cast6_xts_enc_8way) - /* input: - * %rdi: ctx, CTX - * %rsi: dst - * %rdx: src - * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸)) - */ - FRAME_BEGIN - pushq %r15; - - movq %rdi, CTX - movq %rsi, %r11; - - /* regs <= src, dst <= IVs, regs <= regs xor IVs */ - load_xts_8way(%rcx, %rdx, %rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2, - RX, RKR, RKM, .Lxts_gf128mul_and_shl1_mask); - - call __cast6_enc_blk8; - - /* dst <= regs xor IVs(in dst) */ - store_xts_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2); - - popq %r15; - FRAME_END - ret; -SYM_FUNC_END(cast6_xts_enc_8way) - -SYM_FUNC_START(cast6_xts_dec_8way) - /* input: - * %rdi: ctx, CTX - * %rsi: dst - * %rdx: src - * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸)) - */ - FRAME_BEGIN - pushq %r15; - - movq %rdi, CTX - movq %rsi, %r11; - - /* regs <= src, dst <= IVs, regs <= regs xor IVs */ - load_xts_8way(%rcx, %rdx, %rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2, - RX, RKR, RKM, .Lxts_gf128mul_and_shl1_mask); - - call __cast6_dec_blk8; - - /* dst <= regs xor IVs(in dst) */ - store_xts_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2); - - popq %r15; - FRAME_END - ret; -SYM_FUNC_END(cast6_xts_dec_8way) |