diff options
Diffstat (limited to 'arch/x86/crypto/twofish-avx-x86_64-asm_64.S')
| -rw-r--r-- | arch/x86/crypto/twofish-avx-x86_64-asm_64.S | 48 |
1 files changed, 47 insertions, 1 deletions
diff --git a/arch/x86/crypto/twofish-avx-x86_64-asm_64.S b/arch/x86/crypto/twofish-avx-x86_64-asm_64.S index 8d3e113b2c95..05058134c443 100644 --- a/arch/x86/crypto/twofish-avx-x86_64-asm_64.S +++ b/arch/x86/crypto/twofish-avx-x86_64-asm_64.S @@ -4,7 +4,7 @@ * Copyright (C) 2012 Johannes Goetzfried * <Johannes.Goetzfried@informatik.stud.uni-erlangen.de> * - * Copyright © 2012 Jussi Kivilinna <jussi.kivilinna@mbnet.fi> + * Copyright © 2012-2013 Jussi Kivilinna <jussi.kivilinna@iki.fi> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -33,6 +33,8 @@ .Lbswap128_mask: .byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 +.Lxts_gf128mul_and_shl1_mask: + .byte 0x87, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0 .text @@ -408,3 +410,47 @@ ENTRY(twofish_ctr_8way) ret; ENDPROC(twofish_ctr_8way) + +ENTRY(twofish_xts_enc_8way) + /* input: + * %rdi: ctx, CTX + * %rsi: dst + * %rdx: src + * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸)) + */ + + 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, + RX0, RX1, RY0, .Lxts_gf128mul_and_shl1_mask); + + call __twofish_enc_blk8; + + /* dst <= regs xor IVs(in dst) */ + store_xts_8way(%r11, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2); + + ret; +ENDPROC(twofish_xts_enc_8way) + +ENTRY(twofish_xts_dec_8way) + /* input: + * %rdi: ctx, CTX + * %rsi: dst + * %rdx: src + * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸)) + */ + + movq %rsi, %r11; + + /* regs <= src, dst <= IVs, regs <= regs xor IVs */ + load_xts_8way(%rcx, %rdx, %rsi, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2, + RX0, RX1, RY0, .Lxts_gf128mul_and_shl1_mask); + + call __twofish_dec_blk8; + + /* dst <= regs xor IVs(in dst) */ + store_xts_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2); + + ret; +ENDPROC(twofish_xts_dec_8way) |