diff options
Diffstat (limited to 'arch/x86/crypto')
| -rw-r--r-- | arch/x86/crypto/Makefile | 4 | ||||
| -rw-r--r-- | arch/x86/crypto/serpent-sse2-i586-asm_32.S | 638 | ||||
| -rw-r--r-- | arch/x86/crypto/serpent-sse2-x86_64-asm_64.S | 761 | ||||
| -rw-r--r-- | arch/x86/crypto/serpent_sse2_glue.c | 1070 | ||||
| -rw-r--r-- | arch/x86/crypto/twofish_glue_3way.c | 218 |
5 files changed, 2691 insertions, 0 deletions
diff --git a/arch/x86/crypto/Makefile b/arch/x86/crypto/Makefile index 3537d4b91f74..2b0b9631474b 100644 --- a/arch/x86/crypto/Makefile +++ b/arch/x86/crypto/Makefile @@ -5,12 +5,14 @@ obj-$(CONFIG_CRYPTO_AES_586) += aes-i586.o obj-$(CONFIG_CRYPTO_TWOFISH_586) += twofish-i586.o obj-$(CONFIG_CRYPTO_SALSA20_586) += salsa20-i586.o +obj-$(CONFIG_CRYPTO_SERPENT_SSE2_586) += serpent-sse2-i586.o obj-$(CONFIG_CRYPTO_AES_X86_64) += aes-x86_64.o obj-$(CONFIG_CRYPTO_BLOWFISH_X86_64) += blowfish-x86_64.o obj-$(CONFIG_CRYPTO_TWOFISH_X86_64) += twofish-x86_64.o obj-$(CONFIG_CRYPTO_TWOFISH_X86_64_3WAY) += twofish-x86_64-3way.o obj-$(CONFIG_CRYPTO_SALSA20_X86_64) += salsa20-x86_64.o +obj-$(CONFIG_CRYPTO_SERPENT_SSE2_X86_64) += serpent-sse2-x86_64.o obj-$(CONFIG_CRYPTO_AES_NI_INTEL) += aesni-intel.o obj-$(CONFIG_CRYPTO_GHASH_CLMUL_NI_INTEL) += ghash-clmulni-intel.o @@ -20,12 +22,14 @@ obj-$(CONFIG_CRYPTO_SHA1_SSSE3) += sha1-ssse3.o aes-i586-y := aes-i586-asm_32.o aes_glue.o twofish-i586-y := twofish-i586-asm_32.o twofish_glue.o salsa20-i586-y := salsa20-i586-asm_32.o salsa20_glue.o +serpent-sse2-i586-y := serpent-sse2-i586-asm_32.o serpent_sse2_glue.o aes-x86_64-y := aes-x86_64-asm_64.o aes_glue.o blowfish-x86_64-y := blowfish-x86_64-asm_64.o blowfish_glue.o twofish-x86_64-y := twofish-x86_64-asm_64.o twofish_glue.o twofish-x86_64-3way-y := twofish-x86_64-asm_64-3way.o twofish_glue_3way.o salsa20-x86_64-y := salsa20-x86_64-asm_64.o salsa20_glue.o +serpent-sse2-x86_64-y := serpent-sse2-x86_64-asm_64.o serpent_sse2_glue.o aesni-intel-y := aesni-intel_asm.o aesni-intel_glue.o fpu.o diff --git a/arch/x86/crypto/serpent-sse2-i586-asm_32.S b/arch/x86/crypto/serpent-sse2-i586-asm_32.S new file mode 100644 index 000000000000..4e37677ca851 --- /dev/null +++ b/arch/x86/crypto/serpent-sse2-i586-asm_32.S @@ -0,0 +1,638 @@ +/* + * Serpent Cipher 4-way parallel algorithm (i586/SSE2) + * + * Copyright (C) 2011 Jussi Kivilinna <jussi.kivilinna@mbnet.fi> + * + * Based on crypto/serpent.c by + * Copyright (C) 2002 Dag Arne Osvik <osvik@ii.uib.no> + * 2003 Herbert Valerio Riedel <hvr@gnu.org> + * + * 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 + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + */ + +.file "serpent-sse2-i586-asm_32.S" +.text + +#define arg_ctx 4 +#define arg_dst 8 +#define arg_src 12 +#define arg_xor 16 + +/********************************************************************** + 4-way SSE2 serpent + **********************************************************************/ +#define CTX %edx + +#define RA %xmm0 +#define RB %xmm1 +#define RC %xmm2 +#define RD %xmm3 +#define RE %xmm4 + +#define RT0 %xmm5 +#define RT1 %xmm6 + +#define RNOT %xmm7 + +#define get_key(i, j, t) \ + movd (4*(i)+(j))*4(CTX), t; \ + pshufd $0, t, t; + +#define K(x0, x1, x2, x3, x4, i) \ + get_key(i, 0, x4); \ + get_key(i, 1, RT0); \ + get_key(i, 2, RT1); \ + pxor x4, x0; \ + pxor RT0, x1; \ + pxor RT1, x2; \ + get_key(i, 3, x4); \ + pxor x4, x3; + +#define LK(x0, x1, x2, x3, x4, i) \ + movdqa x0, x4; \ + pslld $13, x0; \ + psrld $(32 - 13), x4; \ + por x4, x0; \ + pxor x0, x1; \ + movdqa x2, x4; \ + pslld $3, x2; \ + psrld $(32 - 3), x4; \ + por x4, x2; \ + pxor x2, x1; \ + movdqa x1, x4; \ + pslld $1, x1; \ + psrld $(32 - 1), x4; \ + por x4, x1; \ + movdqa x0, x4; \ + pslld $3, x4; \ + pxor x2, x3; \ + pxor x4, x3; \ + movdqa x3, x4; \ + pslld $7, x3; \ + psrld $(32 - 7), x4; \ + por x4, x3; \ + movdqa x1, x4; \ + pslld $7, x4; \ + pxor x1, x0; \ + pxor x3, x0; \ + pxor x3, x2; \ + pxor x4, x2; \ + movdqa x0, x4; \ + get_key(i, 1, RT0); \ + pxor RT0, x1; \ + get_key(i, 3, RT0); \ + pxor RT0, x3; \ + pslld $5, x0; \ + psrld $(32 - 5), x4; \ + por x4, x0; \ + movdqa x2, x4; \ + pslld $22, x2; \ + psrld $(32 - 22), x4; \ + por x4, x2; \ + get_key(i, 0, RT0); \ + pxor RT0, x0; \ + get_key(i, 2, RT0); \ + pxor RT0, x2; + +#define KL(x0, x1, x2, x3, x4, i) \ + K(x0, x1, x2, x3, x4, i); \ + movdqa x0, x4; \ + psrld $5, x0; \ + pslld $(32 - 5), x4; \ + por x4, x0; \ + movdqa x2, x4; \ + psrld $22, x2; \ + pslld $(32 - 22), x4; \ + por x4, x2; \ + pxor x3, x2; \ + pxor x3, x0; \ + movdqa x1, x4; \ + pslld $7, x4; \ + pxor x1, x0; \ + pxor x4, x2; \ + movdqa x1, x4; \ + psrld $1, x1; \ + pslld $(32 - 1), x4; \ + por x4, x1; \ + movdqa x3, x4; \ + psrld $7, x3; \ + pslld $(32 - 7), x4; \ + por x4, x3; \ + pxor x0, x1; \ + movdqa x0, x4; \ + pslld $3, x4; \ + pxor x4, x3; \ + movdqa x0, x4; \ + psrld $13, x0; \ + pslld $(32 - 13), x4; \ + por x4, x0; \ + pxor x2, x1; \ + pxor x2, x3; \ + movdqa x2, x4; \ + psrld $3, x2; \ + pslld $(32 - 3), x4; \ + por x4, x2; + +#define S0(x0, x1, x2, x3, x4) \ + movdqa x3, x4; \ + por x0, x3; \ + pxor x4, x0; \ + pxor x2, x4; \ + pxor RNOT, x4; \ + pxor x1, x3; \ + pand x0, x1; \ + pxor x4, x1; \ + pxor x0, x2; \ + pxor x3, x0; \ + por x0, x4; \ + pxor x2, x0; \ + pand x1, x2; \ + pxor x2, x3; \ + pxor RNOT, x1; \ + pxor x4, x2; \ + pxor x2, x1; + +#define S1(x0, x1, x2, x3, x4) \ + movdqa x1, x4; \ + pxor x0, x1; \ + pxor x3, x0; \ + pxor RNOT, x3; \ + pand x1, x4; \ + por x1, x0; \ + pxor x2, x3; \ + pxor x3, x0; \ + pxor x3, x1; \ + pxor x4, x3; \ + por x4, x1; \ + pxor x2, x4; \ + pand x0, x2; \ + pxor x1, x2; \ + por x0, x1; \ + pxor RNOT, x0; \ + pxor x2, x0; \ + pxor x1, x4; + +#define S2(x0, x1, x2, x3, x4) \ + pxor RNOT, x3; \ + pxor x0, x1; \ + movdqa x0, x4; \ + pand x2, x0; \ + pxor x3, x0; \ + por x4, x3; \ + pxor x1, x2; \ + pxor x1, x3; \ + pand x0, x1; \ + pxor x2, x0; \ + pand x3, x2; \ + por x1, x3; \ + pxor RNOT, x0; \ + pxor x0, x3; \ + pxor x0, x4; \ + pxor x2, x0; \ + por x2, x1; + +#define S3(x0, x1, x2, x3, x4) \ + movdqa x1, x4; \ + pxor x3, x1; \ + por x0, x3; \ + pand x0, x4; \ + pxor x2, x0; \ + pxor x1, x2; \ + pand x3, x1; \ + pxor x3, x2; \ + por x4, x0; \ + pxor x3, x4; \ + pxor x0, x1; \ + pand x3, x0; \ + pand x4, x3; \ + pxor x2, x3; \ + por x1, x4; \ + pand x1, x2; \ + pxor x3, x4; \ + pxor x3, x0; \ + pxor x2, x3; + +#define S4(x0, x1, x2, x3, x4) \ + movdqa x3, x4; \ + pand x0, x3; \ + pxor x4, x0; \ + pxor x2, x3; \ + por x4, x2; \ + pxor x1, x0; \ + pxor x3, x4; \ + por x0, x2; \ + pxor x1, x2; \ + pand x0, x1; \ + pxor x4, x1; \ + pand x2, x4; \ + pxor x3, x2; \ + pxor x0, x4; \ + por x1, x3; \ + pxor RNOT, x1; \ + pxor x0, x3; + +#define S5(x0, x1, x2, x3, x4) \ + movdqa x1, x4; \ + por x0, x1; \ + pxor x1, x2; \ + pxor RNOT, x3; \ + pxor x0, x4; \ + pxor x2, x0; \ + pand x4, x1; \ + por x3, x4; \ + pxor x0, x4; \ + pand x3, x0; \ + pxor x3, x1; \ + pxor x2, x3; \ + pxor x1, x0; \ + pand x4, x2; \ + pxor x2, x1; \ + pand x0, x2; \ + pxor x2, x3; + +#define S6(x0, x1, x2, x3, x4) \ + movdqa x1, x4; \ + pxor x0, x3; \ + pxor x2, x1; \ + pxor x0, x2; \ + pand x3, x0; \ + por x3, x1; \ + pxor RNOT, x4; \ + pxor x1, x0; \ + pxor x2, x1; \ + pxor x4, x3; \ + pxor x0, x4; \ + pand x0, x2; \ + pxor x1, x4; \ + pxor x3, x2; \ + pand x1, x3; \ + pxor x0, x3; \ + pxor x2, x1; + +#define S7(x0, x1, x2, x3, x4) \ + pxor RNOT, x1; \ + movdqa x1, x4; \ + pxor RNOT, x0; \ + pand x2, x1; \ + pxor x3, x1; \ + por x4, x3; \ + pxor x2, x4; \ + pxor x3, x2; \ + pxor x0, x3; \ + por x1, x0; \ + pand x0, x2; \ + pxor x4, x0; \ + pxor x3, x4; \ + pand x0, x3; \ + pxor x1, x4; \ + pxor x4, x2; \ + pxor x1, x3; \ + por x0, x4; \ + pxor x1, x4; + +#define SI0(x0, x1, x2, x3, x4) \ + movdqa x3, x4; \ + pxor x0, x1; \ + por x1, x3; \ + pxor x1, x4; \ + pxor RNOT, x0; \ + pxor x3, x2; \ + pxor x0, x3; \ + pand x1, x0; \ + pxor x2, x0; \ + pand x3, x2; \ + pxor x4, x3; \ + pxor x3, x2; \ + pxor x3, x1; \ + pand x0, x3; \ + pxor x0, x1; \ + pxor x2, x0; \ + pxor x3, x4; + +#define SI1(x0, x1, x2, x3, x4) \ + pxor x3, x1; \ + movdqa x0, x4; \ + pxor x2, x0; \ + pxor RNOT, x2; \ + por x1, x4; \ + pxor x3, x4; \ + pand x1, x3; \ + pxor x2, x1; \ + pand x4, x2; \ + pxor x1, x4; \ + por x3, x1; \ + pxor x0, x3; \ + pxor x0, x2; \ + por x4, x0; \ + pxor x4, x2; \ + pxor x0, x1; \ + pxor x1, x4; + +#define SI2(x0, x1, x2, x3, x4) \ + pxor x1, x2; \ + movdqa x3, x4; \ + pxor RNOT, x3; \ + por x2, x3; \ + pxor x4, x2; \ + pxor x0, x4; \ + pxor x1, x3; \ + por x2, x1; \ + pxor x0, x2; \ + pxor x4, x1; \ + por x3, x4; \ + pxor x3, x2; \ + pxor x2, x4; \ + pand x1, x2; \ + pxor x3, x2; \ + pxor x4, x3; \ + pxor x0, x4; + +#define SI3(x0, x1, x2, x3, x4) \ + pxor x1, x2; \ + movdqa x1, x4; \ + pand x2, x1; \ + pxor x0, x1; \ + por x4, x0; \ + pxor x3, x4; \ + pxor x3, x0; \ + por x1, x3; \ + pxor x2, x1; \ + pxor x3, x1; \ + pxor x2, x0; \ + pxor x3, x2; \ + pand x1, x3; \ + pxor x0, x1; \ + pand x2, x0; \ + pxor x3, x4; \ + pxor x0, x3; \ + pxor x1, x0; + +#define SI4(x0, x1, x2, x3, x4) \ + pxor x3, x2; \ + movdqa x0, x4; \ + pand x1, x0; \ + pxor x2, x0; \ + por x3, x2; \ + pxor RNOT, x4; \ + pxor x0, x1; \ + pxor x2, x0; \ + pand x4, x2; \ + pxor x0, x2; \ + por x4, x0; \ + pxor x3, x0; \ + pand x2, x3; \ + pxor x3, x4; \ + pxor x1, x3; \ + pand x0, x1; \ + pxor x1, x4; \ + pxor x3, x0; + +#define SI5(x0, x1, x2, x3, x4) \ + movdqa x1, x4; \ + por x2, x1; \ + pxor x4, x2; \ + pxor x3, x1; \ + pand x4, x3; \ + pxor x3, x2; \ + por x0, x3; \ + pxor RNOT, x0; \ + pxor x2, x3; \ + por x0, x2; \ + pxor x1, x4; \ + pxor x4, x2; \ + pand x0, x4; \ + pxor x1, x0; \ + pxor x3, x1; \ + pand x2, x0; \ + pxor x3, x2; \ + pxor x2, x0; \ + pxor x4, x2; \ + pxor x3, x4; + +#define SI6(x0, x1, x2, x3, x4) \ + pxor x2, x0; \ + movdqa x0, x4; \ + pand x3, x0; \ + pxor x3, x2; \ + pxor x2, x0; \ + pxor x1, x3; \ + por x4, x2; \ + pxor x3, x2; \ + pand x0, x3; \ + pxor RNOT, x0; \ + pxor x1, x3; \ + pand x2, x1; \ + pxor x0, x4; \ + pxor x4, x3; \ + pxor x2, x4; \ + pxor x1, x0; \ + pxor x0, x2; + +#define SI7(x0, x1, x2, x3, x4) \ + movdqa x3, x4; \ + pand x0, x3; \ + pxor x2, x0; \ + por x4, x2; \ + pxor x1, x4; \ + pxor RNOT, x0; \ + por x3, x1; \ + pxor x0, x4; \ + pand x2, x0; \ + pxor x1, x0; \ + pand x2, x1; \ + pxor x2, x3; \ + pxor x3, x4; \ + pand x3, x2; \ + por x0, x3; \ + pxor x4, x1; \ + pxor x4, x3; \ + pand x0, x4; \ + pxor x2, x4; + +#define transpose_4x4(x0, x1, x2, x3, t1, t2, t3) \ + movdqa x2, t3; \ + movdqa x0, t1; \ + unpcklps x3, t3; \ + movdqa x0, t2; \ + unpcklps x1, t1; \ + unpckhps x1, t2; \ + movdqa t3, x1; \ + unpckhps x3, x2; \ + movdqa t1, x0; \ + movhlps t1, x1; \ + movdqa t2, t1; \ + movlhps t3, x0; \ + movlhps x2, t1; \ + movhlps t2, x2; \ + movdqa x2, x3; \ + movdqa t1, x2; + +#define read_blocks(in, x0, x1, x2, x3, t0, t1, t2) \ + movdqu (0*4*4)(in), x0; \ + movdqu (1*4*4)(in), x1; \ + movdqu (2*4*4)(in), x2; \ + movdqu (3*4*4)(in), x3; \ + \ + transpose_4x4(x0, x1, x2, x3, t0, t1, t2) + +#define write_blocks(out, x0, x1, x2, x3, t0, t1, t2) \ + transpose_4x4(x0, x1, x2, x3, t0, t1, t2) \ + \ + movdqu x0, (0*4*4)(out); \ + movdqu x1, (1*4*4)(out); \ + movdqu x2, (2*4*4)(out); \ + movdqu x3, (3*4*4)(out); + +#define xor_blocks(out, x0, x1, x2, x3, t0, t1, t2) \ + transpose_4x4(x0, x1, x2, x3, t0, t1, t2) \ + \ + movdqu (0*4*4)(out), t0; \ + pxor t0, x0; \ + movdqu x0, (0*4*4)(out); \ + movdqu (1*4*4)(out), t0; \ + pxor t0, x1; \ + movdqu x1, (1*4*4)(out); \ + movdqu (2*4*4)(out), t0; \ + pxor t0, x2; \ + movdqu x2, (2*4*4)(out); \ + movdqu (3*4*4)(out), t0; \ + pxor t0, x3; \ + movdqu x3, (3*4*4)(out); + +.align 8 +.global __serpent_enc_blk_4way +.type __serpent_enc_blk_4way,@function; + +__serpent_enc_blk_4way: + /* input: + * arg_ctx(%esp): ctx, CTX + * arg_dst(%esp): dst + * arg_src(%esp): src + * arg_xor(%esp): bool, if true: xor output + */ + + pcmpeqd RNOT, RNOT; + + movl arg_ctx(%esp), CTX; + + movl arg_src(%esp), %eax; + read_blocks(%eax, RA, RB, RC, RD, RT0, RT1, RE); + + K(RA, RB, RC, RD, RE, 0); + S0(RA, RB, RC, RD, RE); LK(RC, RB, RD, RA, RE, 1); + S1(RC, RB, RD, RA, RE); LK(RE, RD, RA, RC, RB, 2); + S2(RE, RD, RA, RC, RB); LK(RB, RD, RE, RC, RA, 3); + S3(RB, RD, RE, RC, RA); LK(RC, RA, RD, RB, RE, 4); + S4(RC, RA, RD, RB, RE); LK(RA, RD, RB, RE, RC, 5); + S5(RA, RD, RB, RE, RC); LK(RC, RA, RD, RE, RB, 6); + S6(RC, RA, RD, RE, RB); LK(RD, RB, RA, RE, RC, 7); + S7(RD, RB, RA, RE, RC); LK(RC, RA, RE, RD, RB, 8); + S0(RC, RA, RE, RD, RB); LK(RE, RA, RD, RC, RB, 9); + S1(RE, RA, RD, RC, RB); LK(RB, RD, RC, RE, RA, 10); + S2(RB, RD, RC, RE, RA); LK(RA, RD, RB, RE, RC, 11); + S3(RA, RD, RB, RE, RC); LK(RE, RC, RD, RA, RB, 12); + S4(RE, RC, RD, RA, RB); LK(RC, RD, RA, RB, RE, 13); + S5(RC, RD, RA, RB, RE); LK(RE, RC, RD, RB, RA, 14); + S6(RE, RC, RD, RB, RA); LK(RD, RA, RC, RB, RE, 15); + S7(RD, RA, RC, RB, RE); LK(RE, RC, RB, RD, RA, 16); + S0(RE, RC, RB, RD, RA); LK(RB, RC, RD, RE, RA, 17); + S1(RB, RC, RD, RE, RA); LK(RA, RD, RE, RB, RC, 18); + S2(RA, RD, RE, RB, RC); LK(RC, RD, RA, RB, RE, 19); + S3(RC, RD, RA, RB, RE); LK(RB, RE, RD, RC, RA, 20); + S4(RB, RE, RD, RC, RA); LK(RE, RD, RC, RA, RB, 21); + S5(RE, RD, RC, RA, RB); LK(RB, RE, RD, RA, RC, 22); + S6(RB, RE, RD, RA, RC); LK(RD, RC, RE, RA, RB, 23); + S7(RD, RC, RE, RA, RB); LK(RB, RE, RA, RD, RC, 24); + S0(RB, RE, RA, RD, RC); LK(RA, RE, RD, RB, RC, 25); + S1(RA, RE, RD, RB, RC); LK(RC, RD, RB, RA, RE, 26); + S2(RC, RD, RB, RA, RE); LK(RE, RD, RC, RA, RB, 27); + S3(RE, RD, RC, RA, RB); LK(RA, RB, RD, RE, RC, 28); + S4(RA, RB, RD, RE, RC); LK(RB, RD, RE, RC, RA, 29); + S5(RB, RD, RE, RC, RA); LK(RA, RB, RD, RC, RE, 30); + S6(RA, RB, RD, RC, RE); LK(RD, RE, RB, RC, RA, 31); + S7(RD, RE, RB, RC, RA); K(RA, RB, RC, RD, RE, 32); + + movl arg_dst(%esp), %eax; + + cmpb $0, arg_xor(%esp); + jnz __enc_xor4; + + write_blocks(%eax, RA, RB, RC, RD, RT0, RT1, RE); + + ret; + +__enc_xor4: + xor_blocks(%eax, RA, RB, RC, RD, RT0, RT1, RE); + + ret; + +.align 8 +.global serpent_dec_blk_4way +.type serpent_dec_blk_4way,@function; + +serpent_dec_blk_4way: + /* input: + * arg_ctx(%esp): ctx, CTX + * arg_dst(%esp): dst + * arg_src(%esp): src + */ + + pcmpeqd RNOT, RNOT; + + movl arg_ctx(%esp), CTX; + + movl arg_src(%esp), %eax; + read_blocks(%eax, RA, RB, RC, RD, RT0, RT1, RE); + + K(RA, RB, RC, RD, RE, 32); + SI7(RA, RB, RC, RD, RE); KL(RB, RD, RA, RE, RC, 31); + SI6(RB, RD, RA, RE, RC); KL(RA, RC, RE, RB, RD, 30); + SI5(RA, RC, RE, RB, RD); KL(RC, RD, RA, RE, RB, 29); + SI4(RC, RD, RA, RE, RB); KL(RC, RA, RB, RE, RD, 28); + SI3(RC, RA, RB, RE, RD); KL(RB, RC, RD, RE, RA, 27); + SI2(RB, RC, RD, RE, RA); KL(RC, RA, RE, RD, RB, 26); + SI1(RC, RA, RE, RD, RB); KL(RB, RA, RE, RD, RC, 25); + SI0(RB, RA, RE, RD, RC); KL(RE, RC, RA, RB, RD, 24); + SI7(RE, RC, RA, RB, RD); KL(RC, RB, RE, RD, RA, 23); + SI6(RC, RB, RE, RD, RA); KL(RE, RA, RD, RC, RB, 22); + SI5(RE, RA, RD, RC, RB); KL(RA, RB, RE, RD, RC, 21); + SI4(RA, RB, RE, RD, RC); KL(RA, RE, RC, RD, RB, 20); + SI3(RA, RE, RC, RD, RB); KL(RC, RA, RB, RD, RE, 19); + SI2(RC, RA, RB, RD, RE); KL(RA, RE, RD, RB, RC, 18); + SI1(RA, RE, RD, RB, RC); KL(RC, RE, RD, RB, RA, 17); + SI0(RC, RE, RD, RB, RA); KL(RD, RA, RE, RC, RB, 16); + SI7(RD, RA, RE, RC, RB); KL(RA, RC, RD, RB, RE, 15); + SI6(RA, RC, RD, RB, RE); KL(RD, RE, RB, RA, RC, 14); + SI5(RD, RE, RB, RA, RC); KL(RE, RC, RD, RB, RA, 13); + SI4(RE, RC, RD, RB, RA); KL(RE, RD, RA, RB, RC, 12); + SI3(RE, RD, RA, RB, RC); KL(RA, RE, RC, RB, RD, 11); + SI2(RA, RE, RC, RB, RD); KL(RE, RD, RB, RC, RA, 10); + SI1(RE, RD, RB, RC, RA); KL(RA, RD, RB, RC, RE, 9); + SI0(RA, RD, RB, RC, RE); KL(RB, RE, RD, RA, RC, 8); + SI7(RB, RE, RD, RA, RC); KL(RE, RA, RB, RC, RD, 7); + SI6(RE, RA, RB, RC, RD); KL(RB, RD, RC, RE, RA, 6); + SI5(RB, RD, RC, RE, RA); KL(RD, RA, RB, RC, RE, 5); + SI4(RD, RA, RB, RC, RE); KL(RD, RB, RE, RC, RA, 4); + SI3(RD, RB, RE, RC, RA); KL(RE, RD, RA, RC, RB, 3); + SI2(RE, RD, RA, RC, RB); KL(RD, RB, RC, RA, RE, 2); + SI1(RD, RB, RC, RA, RE); KL(RE, RB, RC, RA, RD, 1); + SI0(RE, RB, RC, RA, RD); K(RC, RD, RB, RE, RA, 0); + + movl arg_dst(%esp), %eax; + write_blocks(%eax, RC, RD, RB, RE, RT0, RT1, RA); + + ret; diff --git a/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S b/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S new file mode 100644 index 000000000000..7f24a1540821 --- /dev/null +++ b/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S @@ -0,0 +1,761 @@ +/* + * Serpent Cipher 8-way parallel algorithm (x86_64/SSE2) + * + * Copyright (C) 2011 Jussi Kivilinna <jussi.kivilinna@mbnet.fi> + * + * Based on crypto/serpent.c by + * Copyright (C) 2002 Dag Arne Osvik <osvik@ii.uib.no> + * 2003 Herbert Valerio Riedel <hvr@gnu.org> + * + * 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 + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + */ + +.file "serpent-sse2-x86_64-asm_64.S" +.text + +#define CTX %rdi + +/********************************************************************** + 8-way SSE2 serpent + **********************************************************************/ +#define RA1 %xmm0 +#define RB1 %xmm1 +#define RC1 %xmm2 +#define RD1 %xmm3 +#define RE1 %xmm4 + +#define RA2 %xmm5 +#define RB2 %xmm6 +#define RC2 %xmm7 +#define RD2 %xmm8 +#define RE2 %xmm9 + +#define RNOT %xmm10 + +#define RK0 %xmm11 +#define RK1 %xmm12 +#define RK2 %xmm13 +#define RK3 %xmm14 + +#define S0_1(x0, x1, x2, x3, x4) \ + movdqa x3, x4; \ + por x0, x3; \ + pxor x4, x0; \ + pxor x2, x4; \ + pxor RNOT, x4; \ + pxor x1, x3; \ + pand x0, x1; \ + pxor x4, x1; \ + pxor x0, x2; +#define S0_2(x0, x1, x2, x3, x4) \ + pxor x3, x0; \ + por x0, x4; \ + pxor x2, x0; \ + pand x1, x2; \ + pxor x2, x3; \ + pxor RNOT, x1; \ + pxor x4, x2; \ + pxor x2, x1; + +#define S1_1(x0, x1, x2, x3, x4) \ + movdqa x1, x4; \ + pxor x0, x1; \ + pxor x3, x0; \ + pxor RNOT, x3; \ + pand x1, x4; \ + por x1, x0; \ + pxor x2, x3; \ + pxor x3, x0; \ + pxor x3, x1; +#define S1_2(x0, x1, x2, x3, x4) \ + pxor x4, x3; \ + por x4, x1; \ + pxor x2, x4; \ + pand x0, x2; \ + pxor x1, x2; \ + por x0, x1; \ + pxor RNOT, x0; \ + pxor x2, x0; \ + pxor x1, x4; + +#define S2_1(x0, x1, x2, x3, x4) \ + pxor RNOT, x3; \ + pxor x0, x1; \ + movdqa x0, x4; \ + pand x2, x0; \ + pxor x3, x0; \ + por x4, x3; \ + pxor x1, x2; \ + pxor x1, x3; \ + pand x0, x1; +#define S2_2(x0, x1, x2, x3, x4) \ + pxor x2, x0; \ + pand x3, x2; \ + por x1, x3; \ + pxor RNOT, x0; \ + pxor x0, x3; \ + pxor x0, x4; \ + pxor x2, x0; \ + por x2, x1; + +#define S3_1(x0, x1, x2, x3, x4) \ + movdqa x1, x4; \ + pxor x3, x1; \ + por x0, x3; \ + pand x0, x4; \ + pxor x2, x0; \ + pxor x1, x2; \ + pand x3, x1; \ + pxor x3, x2; \ + por x4, x0; \ + pxor x3, x4; +#define S3_2(x0, x1, x2, x3, x4) \ + pxor x0, x1; \ + pand x3, x0; \ + pand x4, x3; \ + pxor x2, x3; \ + por x1, x4; \ + pand x1, x2; \ + pxor x3, x4; \ + pxor x3, x0; \ + pxor x2, x3; + +#define S4_1(x0, x1, x2, x3, x4) \ + movdqa x3, x4; \ + pand x0, x3; \ + pxor x4, x0; \ + pxor x2, x3; \ + por x4, x2; \ + pxor x1, x0; \ + pxor x3, x4; \ + por x0, x2; \ + pxor x1, x2; +#define S4_2(x0, x1, x2, x3, x4) \ + pand x0, x1; \ + pxor x4, x1; \ + pand x2, x4; \ + pxor x3, x2; \ + pxor x0, x4; \ + por x1, x3; \ + pxor RNOT, x1; \ + pxor x0, x3; + +#define S5_1(x0, x1, x2, x3, x4) \ + movdqa x1, x4; \ + por x0, x1; \ + pxor x1, x2; \ + pxor RNOT, x3; \ + pxor x0, x4; \ + pxor x2, x0; \ + pand x4, x1; \ + por x3, x4; \ + pxor x0, x4; +#define S5_2(x0, x1, x2, x3, x4) \ + pand x3, x0; \ + pxor x3, x1; \ + pxor x2, x3; \ + pxor x1, x0; \ + pand x4, x2; \ + pxor x2, x1; \ + pand x0, x2; \ + pxor x2, x3; + +#define S6_1(x0, x1, x2, x3, x4) \ + movdqa x1, x4; \ + pxor x0, x3; \ + pxor x2, x1; \ + pxor x0, x2; \ + pand x3, x0; \ + por x3, x1; \ + pxor RNOT, x4; \ + pxor x1, x0; \ + pxor x2, x1; +#define S6_2(x0, x1, x2, x3, x4) \ + pxor x4, x3; \ + pxor x0, x4; \ + pand x0, x2; \ + pxor x1, x4; \ + pxor x3, x2; \ + pand x1, x3; \ + pxor x0, x3; \ + pxor x2, x1; + +#define S7_1(x0, x1, x2, x3, x4) \ + pxor RNOT, x1; \ + movdqa x1, x4; \ + pxor RNOT, x0; \ + pand x2, x1; \ + pxor x3, x1; \ + por x4, x3; \ + pxor x2, x4; \ + pxor x3, x2; \ + pxor x0, x3; \ + por x1, x0; +#define S7_2(x0, x1, x2, x3, x4) \ + pand x0, x2; \ + pxor x4, x0; \ + pxor x3, x4; \ + pand x0, x3; \ + pxor x1, x4; \ + pxor x4, x2; \ + pxor x1, x3; \ + por x0, x4; \ + pxor x1, x4; + +#define SI0_1(x0, x1, x2, x3, x4) \ + movdqa x3, x4; \ + pxor x0, x1; \ + por x1, x3; \ + pxor x1, x4; \ + pxor RNOT, x0; \ + pxor x3, x2; \ + pxor x0, x3; \ + pand x1, x0; \ + pxor x2, x0; +#define SI0_2(x0, x1, x2, x3, x4) \ + pand x3, x2; \ + pxor x4, x3; \ + pxor x3, x2; \ + pxor x3, x1; \ + pand x0, x3; \ + pxor x0, x1; \ + pxor x2, x0; \ + pxor x3, x4; + +#define SI1_1(x0, x1, x2, x3, x4) \ + pxor x3, x1; \ + movdqa x0, x4; \ + pxor x2, x0; \ + pxor RNOT, x2; \ + por x1, x4; \ + pxor x3, x4; \ + pand x1, x3; \ + pxor x2, x1; \ + pand x4, x2; +#define SI1_2(x0, x1, x2, x3, x4) \ + pxor x1, x4; \ + por x3, x1; \ + pxor x0, x3; \ + pxor x0, x2; \ + por x4, x0; \ + pxor x4, x2; \ + pxor x0, x1; \ + pxor x1, x4; + +#define SI2_1(x0, x1, x2, x3, x4) \ + pxor x1, x2; \ + movdqa x3, x4; \ + pxor RNOT, x3; \ + por x2, x3; \ + pxor x4, x2; \ + pxor x0, x4; \ + pxor x1, x3; \ + por x2, x1; \ + pxor x0, x2; +#define SI2_2(x0, x1, x2, x3, x4) \ + pxor x4, x1; \ + por x3, x4; \ + pxor x3, x2; \ + pxor x2, x4; \ + pand x1, x2; \ + pxor x3, x2; \ + pxor x4, x3; \ + pxor x0, x4; + +#define SI3_1(x0, x1, x2, x3, x4) \ + pxor x1, x2; \ + movdqa x1, x4; \ + pand x2, x1; \ + pxor x0, x1; \ + por x4, x0; \ + pxor x3, x4; \ + pxor x3, x0; \ + por x1, x3; \ + pxor x2, x1; +#define SI3_2(x0, x1, x2, x3, x4) \ + pxor x3, x1; \ + pxor x2, x0; \ + pxor x3, x2; \ + pand x1, x3; \ + pxor x0, x1; \ + pand x2, x0; \ + pxor x3, x4; \ + pxor x0, x3; \ + pxor x1, x0; + +#define SI4_1(x0, x1, x2, x3, x4) \ + pxor x3, x2; \ + movdqa x0, x4; \ + pand x1, x0; \ + pxor x2, x0; \ + por x3, x2; \ + pxor RNOT, x4; \ + pxor x0, x1; \ + pxor x2, x0; \ + pand x4, x2; +#define SI4_2(x0, x1, x2, x3, x4) \ + pxor x0, x2; \ + por x4, x0; \ + pxor x3, x0; \ + pand x2, x3; \ + pxor x3, x4; \ + pxor x1, x3; \ + pand x0, x1; \ + pxor x1, x4; \ + pxor x3, x0; + +#define SI5_1(x0, x1, x2, x3, x4) \ + movdqa x1, x4; \ + por x2, x1; \ + pxor x4, x2; \ + pxor x3, x1; \ + pand x4, x3; \ + pxor x3, x2; \ + por x0, x3; \ + pxor RNOT, x0; \ + pxor x2, x3; \ + por x0, x2; +#define SI5_2(x0, x1, x2, x3, x4) \ + pxor x1, x4; \ + pxor x4, x2; \ + pand x0, x4; \ + pxor x1, x0; \ + pxor x3, x1; \ + pand x2, x0; \ + pxor x3, x2; \ + pxor x2, x0; \ + pxor x4, x2; \ + pxor x3, x4; + +#define SI6_1(x0, x1, x2, x3, x4) \ + pxor x2, x0; \ + movdqa x0, x4; \ + pand x3, x0; \ + pxor x3, x2; \ + pxor x2, x0; \ + pxor x1, x3; \ + por x4, x2; \ + pxor x3, x2; \ + pand x0, x3; +#define SI6_2(x0, x1, x2, x3, x4) \ + pxor RNOT, x0; \ + pxor x1, x3; \ + pand x2, x1; \ + pxor x0, x4; \ + pxor x4, x3; \ + pxor x2, x4; \ + pxor x1, x0; \ + pxor x0, x2; + +#define SI7_1(x0, x1, x2, x3, x4) \ + movdqa x3, x4; \ + pand x0, x3; \ + pxor x2, x0; \ + por x4, x2; \ + pxor x1, x4; \ + pxor RNOT, x0; \ + por x3, x1; \ + pxor x0, x4; \ + pand x2, x0; \ + pxor x1, x0; +#define SI7_2(x0, x1, x2, x3, x4) \ + pand x2, x1; \ + pxor x2, x3; \ + pxor x3, x4; \ + pand x3, x2; \ + por x0, x3; \ + pxor x4, x1; \ + pxor x4, x3; \ + pand x0, x4; \ + pxor x2, x4; + +#define get_key(i, j, t) \ + movd (4*(i)+(j))*4(CTX), t; \ + pshufd $0, t, t; + +#define K2(x0, x1, x2, x3, x4, i) \ + get_key(i, 0, RK0); \ + get_key(i, 1, RK1); \ + get_key(i, 2, RK2); \ + get_key(i, 3, RK3); \ + pxor RK0, x0 ## 1; \ + pxor RK1, x1 ## 1; \ + pxor RK2, x2 ## 1; \ + pxor RK3, x3 ## 1; \ + pxor RK0, x0 ## 2; \ + pxor RK1, x1 ## 2; \ + pxor RK2, x2 ## 2; \ + pxor RK3, x3 ## 2; + +#define LK2(x0, x1, x2, x3, x4, i) \ + movdqa x0 ## 1, x4 ## 1; \ + pslld $13, x0 ## 1; \ + psrld $(32 - 13), x4 ## 1; \ + por x4 ## 1, x0 ## 1; \ + pxor x0 ## 1, x1 ## 1; \ + movdqa x2 ## 1, x4 ## 1; \ + pslld $3, x2 ## 1; \ + psrld $(32 - 3), x4 ## 1; \ + por x4 ## 1, x2 ## 1; \ + pxor x2 ## 1, x1 ## 1; \ + movdqa x0 ## 2, x4 ## 2; \ + pslld $13, x0 ## 2; \ + psrld $(32 - 13), x4 ## 2; \ + por x4 ## 2, x0 ## 2; \ + pxor x0 ## 2, x1 ## 2; \ + movdqa x2 ## 2, x4 ## 2; \ + pslld $3, x2 ## 2; \ + psrld $(32 - 3), x4 ## 2; \ + por x4 ## 2, x2 ## 2; \ + pxor x2 ## 2, x1 ## 2; \ + movdqa x1 ## 1, x4 ## 1; \ + pslld $1, x1 ## 1; \ + psrld $(32 - 1), x4 ## 1; \ + por x4 ## 1, x1 ## 1; \ + movdqa x0 ## 1, x4 ## 1; \ + pslld $3, x4 ## 1; \ + pxor x2 ## 1, x3 ## 1; \ + pxor x4 ## 1, x3 ## 1; \ + movdqa x3 ## 1, x4 ## 1; \ + get_key(i, 1, RK1); \ + movdqa x1 ## 2, x4 ## 2; \ + pslld $1, x1 ## 2; \ + psrld $(32 - 1), x4 ## 2; \ + por x4 ## 2, x1 ## 2; \ + movdqa x0 ## 2, x4 ## 2; \ + pslld $3, x4 ## 2; \ + pxor x2 ## 2, x3 ## 2; \ + pxor x4 ## 2, x3 ## 2; \ + movdqa x3 ## 2, x4 ## 2; \ + get_key(i, 3, RK3); \ + pslld $7, x3 ## 1; \ + psrld $(32 - 7), x4 ## 1; \ + por x4 ## 1, x3 ## 1; \ + movdqa x1 ## 1, x4 ## 1; \ + pslld $7, x4 ## 1; \ + pxor x1 ## 1, x0 ## 1; \ + pxor x3 ## 1, x0 ## 1; \ + pxor x3 ## 1, x2 ## 1; \ + pxor x4 ## 1, x2 ## 1; \ + get_key(i, 0, RK0); \ + pslld $7, x3 ## 2; \ + psrld $(32 - 7), x4 ## 2; \ + por x4 ## 2, x3 ## 2; \ + movdqa x1 ## 2, x4 ## 2; \ + pslld $7, x4 ## 2; \ + pxor x1 ## 2, x0 ## 2; \ + pxor x3 ## 2, x0 ## 2; \ + pxor x3 ## 2, x2 ## 2; \ + pxor x4 ## 2, x2 ## 2; \ + get_key(i, 2, RK2); \ + pxor RK1, x1 ## 1; \ + pxor RK3, x3 ## 1; \ + movdqa x0 ## 1, x4 ## 1; \ + pslld $5, x0 ## 1; \ + psrld $(32 - 5), x4 ## 1; \ + por x4 ## 1, x0 ## 1; \ + movdqa x2 ## 1, x4 ## 1; \ + pslld $22, x2 ## 1; \ + psrld $(32 - 22), x4 ## 1; \ + por x4 ## 1, x2 ## 1; \ + pxor RK0, x0 ## 1; \ + pxor RK2, x2 ## 1; \ + pxor RK1, x1 ## 2; \ + pxor RK3, x3 ## 2; \ + movdqa x0 ## 2, x4 ## 2; \ + pslld $5, x0 ## 2; \ + psrld $(32 - 5), x4 ## 2; \ + por x4 ## 2, x0 ## 2; \ + movdqa x2 ## 2, x4 ## 2; \ + pslld $22, x2 ## 2; \ + psrld $(32 - 22), x4 ## 2; \ + por x4 ## 2, x2 ## 2; \ + pxor RK0, x0 ## 2; \ + pxor RK2, x2 ## 2; + +#define KL2(x0, x1, x2, x3, x4, i) \ + pxor RK0, x0 ## 1; \ + pxor RK2, x2 ## 1; \ + movdqa x0 ## 1, x4 ## 1; \ + psrld $5, x0 ## 1; \ + pslld $(32 - 5), x4 ## 1; \ + por x4 ## 1, x0 ## 1; \ + pxor RK3, x3 ## 1; \ + pxor RK1, x1 ## 1; \ + movdqa x2 ## 1, x4 ## 1; \ + psrld $22, x2 ## 1; \ + pslld $(32 - 22), x4 ## 1; \ + por x4 ## 1, x2 ## 1; \ + pxor x3 ## 1, x2 ## 1; \ + pxor RK0, x0 ## 2; \ + pxor RK2, x2 ## 2; \ + movdqa x0 ## 2, x4 ## 2; \ + psrld $5, x0 ## 2; \ + pslld $(32 - 5), x4 ## 2; \ + por x4 ## 2, x0 ## 2; \ + pxor RK3, x3 ## 2; \ + pxor RK1, x1 ## 2; \ + movdqa x2 ## 2, x4 ## 2; \ + psrld $22, x2 ## 2; \ + pslld $(32 - 22), x4 ## 2; \ + por x4 ## 2, x2 ## 2; \ + pxor x3 ## 2, x2 ## 2; \ + pxor x3 ## 1, x0 ## 1; \ + movdqa x1 ## 1, x4 ## 1; \ + pslld $7, x4 ## 1; \ + pxor x1 ## 1, x0 ## 1; \ + pxor x4 ## 1, x2 ## 1; \ + movdqa x1 ## 1, x4 ## 1; \ + psrld $1, x1 ## 1; \ + pslld $(32 - 1), x4 ## 1; \ + por x4 ## 1, x1 ## 1; \ + pxor x3 ## 2, x0 ## 2; \ + movdqa x1 ## 2, x4 ## 2; \ + pslld $7, x4 ## 2; \ + pxor x1 ## 2, x0 ## 2; \ + pxor x4 ## 2, x2 ## 2; \ + movdqa x1 ## 2, x4 ## 2; \ + psrld $1, x1 ## 2; \ + pslld $(32 - 1), x4 ## 2; \ + por x4 ## 2, x1 ## 2; \ + movdqa x3 ## 1, x4 ## 1; \ + psrld $7, x3 ## 1; \ + pslld $(32 - 7), x4 ## 1; \ + por x4 ## 1, x3 ## 1; \ + pxor x0 ## 1, x1 ## 1; \ + movdqa x0 ## 1, x4 ## 1; \ + pslld $3, x4 ## 1; \ + pxor x4 ## 1, x3 ## 1; \ + movdqa x0 ## 1, x4 ## 1; \ + movdqa x3 ## 2, x4 ## 2; \ + psrld $7, x3 ## 2; \ + pslld $(32 - 7), x4 ## 2; \ + por x4 ## 2, x3 ## 2; \ + pxor x0 ## 2, x1 ## 2; \ + movdqa x0 ## 2, x4 ## 2; \ + pslld $3, x4 ## 2; \ + pxor x4 ## 2, x3 ## 2; \ + movdqa x0 ## 2, x4 ## 2; \ + psrld $13, x0 ## 1; \ + pslld $(32 - 13), x4 ## 1; \ + por x4 ## 1, x0 ## 1; \ + pxor x2 ## 1, x1 ## 1; \ + pxor x2 ## 1, x3 ## 1; \ + movdqa x2 ## 1, x4 ## 1; \ + psrld $3, x2 ## 1; \ + pslld $(32 - 3), x4 ## 1; \ + por x4 ## 1, x2 ## 1; \ + psrld $13, x0 ## 2; \ + pslld $(32 - 13), x4 ## 2; \ + por x4 ## 2, x0 ## 2; \ + pxor x2 ## 2, x1 ## 2; \ + pxor x2 ## 2, x3 ## 2; \ + movdqa x2 ## 2, x4 ## 2; \ + psrld $3, x2 ## 2; \ + pslld $(32 - 3), x4 ## 2; \ + por x4 ## 2, x2 ## 2; + +#define S(SBOX, x0, x1, x2, x3, x4) \ + SBOX ## _1(x0 ## 1, x1 ## 1, x2 ## 1, x3 ## 1, x4 ## 1); \ + SBOX ## _2(x0 ## 1, x1 ## 1, x2 ## 1, x3 ## 1, x4 ## 1); \ + SBOX ## _1(x0 ## 2, x1 ## 2, x2 ## 2, x3 ## 2, x4 ## 2); \ + SBOX ## _2(x0 ## 2, x1 ## 2, x2 ## 2, x3 ## 2, x4 ## 2); + +#define SP(SBOX, x0, x1, x2, x3, x4, i) \ + get_key(i, 0, RK0); \ + SBOX ## _1(x0 ## 1, x1 ## 1, x2 ## 1, x3 ## 1, x4 ## 1); \ + get_key(i, 2, RK2); \ + SBOX ## _1(x0 ## 2, x1 ## 2, x2 ## 2, x3 ## 2, x4 ## 2); \ + get_key(i, 3, RK3); \ + SBOX ## _2(x0 ## 1, x1 ## 1, x2 ## 1, x3 ## 1, x4 ## 1); \ + get_key(i, 1, RK1); \ + SBOX ## _2(x0 ## 2, x1 ## 2, x2 ## 2, x3 ## 2, x4 ## 2); \ + +#define transpose_4x4(x0, x1, x2, x3, t1, t2, t3) \ + movdqa x2, t3; \ + movdqa x0, t1; \ + unpcklps x3, t3; \ + movdqa x0, t2; \ + unpcklps x1, t1; \ + unpckhps x1, t2; \ + movdqa t3, x1; \ + unpckhps x3, x2; \ + movdqa t1, x0; \ + movhlps t1, x1; \ + movdqa t2, t1; \ + movlhps t3, x0; \ + movlhps x2, t1; \ + movhlps t2, x2; \ + movdqa x2, x3; \ + movdqa t1, x2; + +#define read_blocks(in, x0, x1, x2, x3, t0, t1, t2) \ + movdqu (0*4*4)(in), x0; \ + movdqu (1*4*4)(in), x1; \ + movdqu (2*4*4)(in), x2; \ + movdqu (3*4*4)(in), x3; \ + \ + transpose_4x4(x0, x1, x2, x3, t0, t1, t2) + +#define write_blocks(out, x0, x1, x2, x3, t0, t1, t2) \ + transpose_4x4(x0, x1, x2, x3, t0, t1, t2) \ + \ + movdqu x0, (0*4*4)(out); \ + movdqu x1, (1*4*4)(out); \ + movdqu x2, (2*4*4)(out); \ + movdqu x3, (3*4*4)(out); + +#define xor_blocks(out, x0, x1, x2, x3, t0, t1, t2) \ + transpose_4x4(x0, x1, x2, x3, t0, t1, t2) \ + \ + movdqu (0*4*4)(out), t0; \ + pxor t0, x0; \ + movdqu x0, (0*4*4)(out); \ + movdqu (1*4*4)(out), t0; \ + pxor t0, x1; \ + movdqu x1, (1*4*4)(out); \ + movdqu (2*4*4)(out), t0; \ + pxor t0, x2; \ + movdqu x2, (2*4*4)(out); \ + movdqu (3*4*4)(out), t0; \ + pxor t0, x3; \ + movdqu x3, (3*4*4)(out); + +.align 8 +.global __serpent_enc_blk_8way +.type __serpent_enc_blk_8way,@function; + +__serpent_enc_blk_8way: + /* input: + * %rdi: ctx, CTX + * %rsi: dst + * %rdx: src + * %rcx: bool, if true: xor output + */ + + pcmpeqd RNOT, RNOT; + + leaq (4*4*4)(%rdx), %rax; + read_blocks(%rdx, RA1, RB1, RC1, RD1, RK0, RK1, RK2); + read_blocks(%rax, RA2, RB2, RC2, RD2, RK0, RK1, RK2); + + K2(RA, RB, RC, RD, RE, 0); + S(S0, RA, RB, RC, RD, RE); LK2(RC, RB, RD, RA, RE, 1); + S(S1, RC, RB, RD, RA, RE); LK2(RE, RD, RA, RC, RB, 2); + S(S2, RE, RD, RA, RC, RB); LK2(RB, RD, RE, RC, RA, 3); + S(S3, RB, RD, RE, RC, RA); LK2(RC, RA, RD, RB, RE, 4); + S(S4, RC, RA, RD, RB, RE); LK2(RA, RD, RB, RE, RC, 5); + S(S5, RA, RD, RB, RE, RC); LK2(RC, RA, RD, RE, RB, 6); + S(S6, RC, RA, RD, RE, RB); LK2(RD, RB, RA, RE, RC, 7); + S(S7, RD, RB, RA, RE, RC); LK2(RC, RA, RE, RD, RB, 8); + S(S0, RC, RA, RE, RD, RB); LK2(RE, RA, RD, RC, RB, 9); + S(S1, RE, RA, RD, RC, RB); LK2(RB, RD, RC, RE, RA, 10); + S(S2, RB, RD, RC, RE, RA); LK2(RA, RD, RB, RE, RC, 11); + S(S3, RA, RD, RB, RE, RC); LK2(RE, RC, RD, RA, RB, 12); + S(S4, RE, RC, RD, RA, RB); LK2(RC, RD, RA, RB, RE, 13); + S(S5, RC, RD, RA, RB, RE); LK2(RE, RC, RD, RB, RA, 14); + S(S6, RE, RC, RD, RB, RA); LK2(RD, RA, RC, RB, RE, 15); + S(S7, RD, RA, RC, RB, RE); LK2(RE, RC, RB, RD, RA, 16); + S(S0, RE, RC, RB, RD, RA); LK2(RB, RC, RD, RE, RA, 17); + S(S1, RB, RC, RD, RE, RA); LK2(RA, RD, RE, RB, RC, 18); + S(S2, RA, RD, RE, RB, RC); LK2(RC, RD, RA, RB, RE, 19); + S(S3, RC, RD, RA, RB, RE); LK2(RB, RE, RD, RC, RA, 20); + S(S4, RB, RE, RD, RC, RA); LK2(RE, RD, RC, RA, RB, 21); + S(S5, RE, RD, RC, RA, RB); LK2(RB, RE, RD, RA, RC, 22); + S(S6, RB, RE, RD, RA, RC); LK2(RD, RC, RE, RA, RB, 23); + S(S7, RD, RC, RE, RA, RB); LK2(RB, RE, RA, RD, RC, 24); + S(S0, RB, RE, RA, RD, RC); LK2(RA, RE, RD, RB, RC, 25); + S(S1, RA, RE, RD, RB, RC); LK2(RC, RD, RB, RA, RE, 26); + S(S2, RC, RD, RB, RA, RE); LK2(RE, RD, RC, RA, RB, 27); + S(S3, RE, RD, RC, RA, RB); LK2(RA, RB, RD, RE, RC, 28); + S(S4, RA, RB, RD, RE, RC); LK2(RB, RD, RE, RC, RA, 29); + S(S5, RB, RD, RE, RC, RA); LK2(RA, RB, RD, RC, RE, 30); + S(S6, RA, RB, RD, RC, RE); LK2(RD, RE, RB, RC, RA, 31); + S(S7, RD, RE, RB, RC, RA); K2(RA, RB, RC, RD, RE, 32); + + leaq (4*4*4)(%rsi), %rax; + + testb %cl, %cl; + jnz __enc_xor8; + + write_blocks(%rsi, RA1, RB1, RC1, RD1, RK0, RK1, RK2); + write_blocks(%rax, RA2, RB2, RC2, RD2, RK0, RK1, RK2); + + ret; + +__enc_xor8: + xor_blocks(%rsi, RA1, RB1, RC1, RD1, RK0, RK1, RK2); + xor_blocks(%rax, RA2, RB2, RC2, RD2, RK0, RK1, RK2); + + ret; + +.align 8 +.global serpent_dec_blk_8way +.type serpent_dec_blk_8way,@function; + +serpent_dec_blk_8way: + /* input: + * %rdi: ctx, CTX + * %rsi: dst + * %rdx: src + */ + + pcmpeqd RNOT, RNOT; + + leaq (4*4*4)(%rdx), %rax; + read_blocks(%rdx, RA1, RB1, RC1, RD1, RK0, RK1, RK2); + read_blocks(%rax, RA2, RB2, RC2, RD2, RK0, RK1, RK2); + + K2(RA, RB, RC, RD, RE, 32); + SP(SI7, RA, RB, RC, RD, RE, 31); KL2(RB, RD, RA, RE, RC, 31); + SP(SI6, RB, RD, RA, RE, RC, 30); KL2(RA, RC, RE, RB, RD, 30); + SP(SI5, RA, RC, RE, RB, RD, 29); KL2(RC, RD, RA, RE, RB, 29); + SP(SI4, RC, RD, RA, RE, RB, 28); KL2(RC, RA, RB, RE, RD, 28); + SP(SI3, RC, RA, RB, RE, RD, 27); KL2(RB, RC, RD, RE, RA, 27); + SP(SI2, RB, RC, RD, RE, RA, 26); KL2(RC, RA, RE, RD, RB, 26); + SP(SI1, RC, RA, RE, RD, RB, 25); KL2(RB, RA, RE, RD, RC, 25); + SP(SI0, RB, RA, RE, RD, RC, 24); KL2(RE, RC, RA, RB, RD, 24); + SP(SI7, RE, RC, RA, RB, RD, 23); KL2(RC, RB, RE, RD, RA, 23); + SP(SI6, RC, RB, RE, RD, RA, 22); KL2(RE, RA, RD, RC, RB, 22); + SP(SI5, RE, RA, RD, RC, RB, 21); KL2(RA, RB, RE, RD, RC, 21); + SP(SI4, RA, RB, RE, RD, RC, 20); KL2(RA, RE, RC, RD, RB, 20); + SP(SI3, RA, RE, RC, RD, RB, 19); KL2(RC, RA, RB, RD, RE, 19); + SP(SI2, RC, RA, RB, RD, RE, 18); KL2(RA, RE, RD, RB, RC, 18); + SP(SI1, RA, RE, RD, RB, RC, 17); KL2(RC, RE, RD, RB, RA, 17); + SP(SI0, RC, RE, RD, RB, RA, 16); KL2(RD, RA, RE, RC, RB, 16); + SP(SI7, RD, RA, RE, RC, RB, 15); KL2(RA, RC, RD, RB, RE, 15); + SP(SI6, RA, RC, RD, RB, RE, 14); KL2(RD, RE, RB, RA, RC, 14); + SP(SI5, RD, RE, RB, RA, RC, 13); KL2(RE, RC, RD, RB, RA, 13); + SP(SI4, RE, RC, RD, RB, RA, 12); KL2(RE, RD, RA, RB, RC, 12); + SP(SI3, RE, RD, RA, RB, RC, 11); KL2(RA, RE, RC, RB, RD, 11); + SP(SI2, RA, RE, RC, RB, RD, 10); KL2(RE, RD, RB, RC, RA, 10); + SP(SI1, RE, RD, RB, RC, RA, 9); KL2(RA, RD, RB, RC, RE, 9); + SP(SI0, RA, RD, RB, RC, RE, 8); KL2(RB, RE, RD, RA, RC, 8); + SP(SI7, RB, RE, RD, RA, RC, 7); KL2(RE, RA, RB, RC, RD, 7); + SP(SI6, RE, RA, RB, RC, RD, 6); KL2(RB, RD, RC, RE, RA, 6); + SP(SI5, RB, RD, RC, RE, RA, 5); KL2(RD, RA, RB, RC, RE, 5); + SP(SI4, RD, RA, RB, RC, RE, 4); KL2(RD, RB, RE, RC, RA, 4); + SP(SI3, RD, RB, RE, RC, RA, 3); KL2(RE, RD, RA, RC, RB, 3); + SP(SI2, RE, RD, RA, RC, RB, 2); KL2(RD, RB, RC, RA, RE, 2); + SP(SI1, RD, RB, RC, RA, RE, 1); KL2(RE, RB, RC, RA, RD, 1); + S(SI0, RE, RB, RC, RA, RD); K2(RC, RD, RB, RE, RA, 0); + + leaq (4*4*4)(%rsi), %rax; + write_blocks(%rsi, RC1, RD1, RB1, RE1, RK0, RK1, RK2); + write_blocks(%rax, RC2, RD2, RB2, RE2, RK0, RK1, RK2); + + ret; diff --git a/arch/x86/crypto/serpent_sse2_glue.c b/arch/x86/crypto/serpent_sse2_glue.c new file mode 100644 index 000000000000..7955a9b76b91 --- /dev/null +++ b/arch/x86/crypto/serpent_sse2_glue.c @@ -0,0 +1,1070 @@ +/* + * Glue Code for SSE2 assembler versions of Serpent Cipher + * + * Copyright (c) 2011 Jussi Kivilinna <jussi.kivilinna@mbnet.fi> + * + * Glue code based on aesni-intel_glue.c by: + * Copyright (C) 2008, Intel Corp. + * Author: Huang Ying <ying.huang@intel.com> + * + * CBC & ECB parts based on code (crypto/cbc.c,ecb.c) by: + * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au> + * CTR part based on code (crypto/ctr.c) by: + * (C) Copyright IBM Corp. 2007 - Joy Latten <latten@us.ibm.com> + * + * 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 + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + * USA + * + */ + +#include <linux/module.h> +#include <linux/hardirq.h> +#include <linux/types.h> +#include <linux/crypto.h> +#include <linux/err.h> +#include <crypto/algapi.h> +#include <crypto/serpent.h> +#include <crypto/cryptd.h> +#include <crypto/b128ops.h> +#include <crypto/ctr.h> +#include <crypto/lrw.h> +#include <crypto/xts.h> +#include <asm/i387.h> +#include <asm/serpent.h> +#include <crypto/scatterwalk.h> +#include <linux/workqueue.h> +#include <linux/spinlock.h> + +struct async_serpent_ctx { + struct cryptd_ablkcipher *cryptd_tfm; +}; + +static inline bool serpent_fpu_begin(bool fpu_enabled, unsigned int nbytes) +{ + if (fpu_enabled) + return true; + + /* SSE2 is only used when chunk to be processed is large enough, so + * do not enable FPU until it is necessary. + */ + if (nbytes < SERPENT_BLOCK_SIZE * SERPENT_PARALLEL_BLOCKS) + return false; + + kernel_fpu_begin(); + return true; +} + +static inline void serpent_fpu_end(bool fpu_enabled) +{ + if (fpu_enabled) + kernel_fpu_end(); +} + +static int ecb_crypt(struct blkcipher_desc *desc, struct blkcipher_walk *walk, + bool enc) +{ + bool fpu_enabled = false; + struct serpent_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + const unsigned int bsize = SERPENT_BLOCK_SIZE; + unsigned int nbytes; + int err; + + err = blkcipher_walk_virt(desc, walk); + desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; + + while ((nbytes = walk->nbytes)) { + u8 *wsrc = walk->src.virt.addr; + u8 *wdst = walk->dst.virt.addr; + + fpu_enabled = serpent_fpu_begin(fpu_enabled, nbytes); + + /* Process multi-block batch */ + if (nbytes >= bsize * SERPENT_PARALLEL_BLOCKS) { + do { + if (enc) + serpent_enc_blk_xway(ctx, wdst, wsrc); + else + serpent_dec_blk_xway(ctx, wdst, wsrc); + + wsrc += bsize * SERPENT_PARALLEL_BLOCKS; + wdst += bsize * SERPENT_PARALLEL_BLOCKS; + nbytes -= bsize * SERPENT_PARALLEL_BLOCKS; + } while (nbytes >= bsize * SERPENT_PARALLEL_BLOCKS); + + if (nbytes < bsize) + goto done; + } + + /* Handle leftovers */ + do { + if (enc) + __serpent_encrypt(ctx, wdst, wsrc); + else + __serpent_decrypt(ctx, wdst, wsrc); + + wsrc += bsize; + wdst += bsize; + nbytes -= bsize; + } while (nbytes >= bsize); + +done: + err = blkcipher_walk_done(desc, walk, nbytes); + } + + serpent_fpu_end(fpu_enabled); + return err; +} + +static int ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + struct blkcipher_walk walk; + + blkcipher_walk_init(&walk, dst, src, nbytes); + return ecb_crypt(desc, &walk, true); +} + +static int ecb_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + struct blkcipher_walk walk; + + blkcipher_walk_init(&walk, dst, src, nbytes); + return ecb_crypt(desc, &walk, false); +} + +static struct crypto_alg blk_ecb_alg = { + .cra_name = "__ecb-serpent-sse2", + .cra_driver_name = "__driver-ecb-serpent-sse2", + .cra_priority = 0, + .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, + .cra_blocksize = SERPENT_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct serpent_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_blkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(blk_ecb_alg.cra_list), + .cra_u = { + .blkcipher = { + .min_keysize = SERPENT_MIN_KEY_SIZE, + .max_keysize = SERPENT_MAX_KEY_SIZE, + .setkey = serpent_setkey, + .encrypt = ecb_encrypt, + .decrypt = ecb_decrypt, + }, + }, +}; + +static unsigned int __cbc_encrypt(struct blkcipher_desc *desc, + struct blkcipher_walk *walk) +{ + struct serpent_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + const unsigned int bsize = SERPENT_BLOCK_SIZE; + unsigned int nbytes = walk->nbytes; + u128 *src = (u128 *)walk->src.virt.addr; + u128 *dst = (u128 *)walk->dst.virt.addr; + u128 *iv = (u128 *)walk->iv; + + do { + u128_xor(dst, src, iv); + __serpent_encrypt(ctx, (u8 *)dst, (u8 *)dst); + iv = dst; + + src += 1; + dst += 1; + nbytes -= bsize; + } while (nbytes >= bsize); + + u128_xor((u128 *)walk->iv, (u128 *)walk->iv, iv); + return nbytes; +} + +static int cbc_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + struct blkcipher_walk walk; + int err; + + blkcipher_walk_init(&walk, dst, src, nbytes); + err = blkcipher_walk_virt(desc, &walk); + + while ((nbytes = walk.nbytes)) { + nbytes = __cbc_encrypt(desc, &walk); + err = blkcipher_walk_done(desc, &walk, nbytes); + } + + return err; +} + +static unsigned int __cbc_decrypt(struct blkcipher_desc *desc, + struct blkcipher_walk *walk) +{ + struct serpent_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + const unsigned int bsize = SERPENT_BLOCK_SIZE; + unsigned int nbytes = walk->nbytes; + u128 *src = (u128 *)walk->src.virt.addr; + u128 *dst = (u128 *)walk->dst.virt.addr; + u128 ivs[SERPENT_PARALLEL_BLOCKS - 1]; + u128 last_iv; + int i; + + /* Start of the last block. */ + src += nbytes / bsize - 1; + dst += nbytes / bsize - 1; + + last_iv = *src; + + /* Process multi-block batch */ + if (nbytes >= bsize * SERPENT_PARALLEL_BLOCKS) { + do { + nbytes -= bsize * (SERPENT_PARALLEL_BLOCKS - 1); + src -= SERPENT_PARALLEL_BLOCKS - 1; + dst -= SERPENT_PARALLEL_BLOCKS - 1; + + for (i = 0; i < SERPENT_PARALLEL_BLOCKS - 1; i++) + ivs[i] = src[i]; + + serpent_dec_blk_xway(ctx, (u8 *)dst, (u8 *)src); + + for (i = 0; i < SERPENT_PARALLEL_BLOCKS - 1; i++) + u128_xor(dst + (i + 1), dst + (i + 1), ivs + i); + + nbytes -= bsize; + if (nbytes < bsize) + goto done; + + u128_xor(dst, dst, src - 1); + src -= 1; + dst -= 1; + } while (nbytes >= bsize * SERPENT_PARALLEL_BLOCKS); + + if (nbytes < bsize) + goto done; + } + + /* Handle leftovers */ + for (;;) { + __serpent_decrypt(ctx, (u8 *)dst, (u8 *)src); + + nbytes -= bsize; + if (nbytes < bsize) + break; + + u128_xor(dst, dst, src - 1); + src -= 1; + dst -= 1; + } + +done: + u128_xor(dst, dst, (u128 *)walk->iv); + *(u128 *)walk->iv = last_iv; + + return nbytes; +} + +static int cbc_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + bool fpu_enabled = false; + struct blkcipher_walk walk; + int err; + + blkcipher_walk_init(&walk, dst, src, nbytes); + err = blkcipher_walk_virt(desc, &walk); + desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; + + while ((nbytes = walk.nbytes)) { + fpu_enabled = serpent_fpu_begin(fpu_enabled, nbytes); + nbytes = __cbc_decrypt(desc, &walk); + err = blkcipher_walk_done(desc, &walk, nbytes); + } + + serpent_fpu_end(fpu_enabled); + return err; +} + +static struct crypto_alg blk_cbc_alg = { + .cra_name = "__cbc-serpent-sse2", + .cra_driver_name = "__driver-cbc-serpent-sse2", + .cra_priority = 0, + .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, + .cra_blocksize = SERPENT_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct serpent_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_blkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(blk_cbc_alg.cra_list), + .cra_u = { + .blkcipher = { + .min_keysize = SERPENT_MIN_KEY_SIZE, + .max_keysize = SERPENT_MAX_KEY_SIZE, + .setkey = serpent_setkey, + .encrypt = cbc_encrypt, + .decrypt = cbc_decrypt, + }, + }, +}; + +static inline void u128_to_be128(be128 *dst, const u128 *src) +{ + dst->a = cpu_to_be64(src->a); + dst->b = cpu_to_be64(src->b); +} + +static inline void be128_to_u128(u128 *dst, const be128 *src) +{ + dst->a = be64_to_cpu(src->a); + dst->b = be64_to_cpu(src->b); +} + +static inline void u128_inc(u128 *i) +{ + i->b++; + if (!i->b) + i->a++; +} + +static void ctr_crypt_final(struct blkcipher_desc *desc, + struct blkcipher_walk *walk) +{ + struct serpent_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + u8 *ctrblk = walk->iv; + u8 keystream[SERPENT_BLOCK_SIZE]; + u8 *src = walk->src.virt.addr; + u8 *dst = walk->dst.virt.addr; + unsigned int nbytes = walk->nbytes; + + __serpent_encrypt(ctx, keystream, ctrblk); + crypto_xor(keystream, src, nbytes); + memcpy(dst, keystream, nbytes); + + crypto_inc(ctrblk, SERPENT_BLOCK_SIZE); +} + +static unsigned int __ctr_crypt(struct blkcipher_desc *desc, + struct blkcipher_walk *walk) +{ + struct serpent_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + const unsigned int bsize = SERPENT_BLOCK_SIZE; + unsigned int nbytes = walk->nbytes; + u128 *src = (u128 *)walk->src.virt.addr; + u128 *dst = (u128 *)walk->dst.virt.addr; + u128 ctrblk; + be128 ctrblocks[SERPENT_PARALLEL_BLOCKS]; + int i; + + be128_to_u128(&ctrblk, (be128 *)walk->iv); + + /* Process multi-block batch */ + if (nbytes >= bsize * SERPENT_PARALLEL_BLOCKS) { + do { + /* create ctrblks for parallel encrypt */ + for (i = 0; i < SERPENT_PARALLEL_BLOCKS; i++) { + if (dst != src) + dst[i] = src[i]; + + u128_to_be128(&ctrblocks[i], &ctrblk); + u128_inc(&ctrblk); + } + + serpent_enc_blk_xway_xor(ctx, (u8 *)dst, + (u8 *)ctrblocks); + + src += SERPENT_PARALLEL_BLOCKS; + dst += SERPENT_PARALLEL_BLOCKS; + nbytes -= bsize * SERPENT_PARALLEL_BLOCKS; + } while (nbytes >= bsize * SERPENT_PARALLEL_BLOCKS); + + if (nbytes < bsize) + goto done; + } + + /* Handle leftovers */ + do { + if (dst != src) + *dst = *src; + + u128_to_be128(&ctrblocks[0], &ctrblk); + u128_inc(&ctrblk); + + __serpent_encrypt(ctx, (u8 *)ctrblocks, (u8 *)ctrblocks); + u128_xor(dst, dst, (u128 *)ctrblocks); + + src += 1; + dst += 1; + nbytes -= bsize; + } while (nbytes >= bsize); + +done: + u128_to_be128((be128 *)walk->iv, &ctrblk); + return nbytes; +} + +static int ctr_crypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + bool fpu_enabled = false; + struct blkcipher_walk walk; + int err; + + blkcipher_walk_init(&walk, dst, src, nbytes); + err = blkcipher_walk_virt_block(desc, &walk, SERPENT_BLOCK_SIZE); + desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; + + while ((nbytes = walk.nbytes) >= SERPENT_BLOCK_SIZE) { + fpu_enabled = serpent_fpu_begin(fpu_enabled, nbytes); + nbytes = __ctr_crypt(desc, &walk); + err = blkcipher_walk_done(desc, &walk, nbytes); + } + + serpent_fpu_end(fpu_enabled); + + if (walk.nbytes) { + ctr_crypt_final(desc, &walk); + err = blkcipher_walk_done(desc, &walk, 0); + } + + return err; +} + +static struct crypto_alg blk_ctr_alg = { + .cra_name = "__ctr-serpent-sse2", + .cra_driver_name = "__driver-ctr-serpent-sse2", + .cra_priority = 0, + .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, + .cra_blocksize = 1, + .cra_ctxsize = sizeof(struct serpent_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_blkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(blk_ctr_alg.cra_list), + .cra_u = { + .blkcipher = { + .min_keysize = SERPENT_MIN_KEY_SIZE, + .max_keysize = SERPENT_MAX_KEY_SIZE, + .ivsize = SERPENT_BLOCK_SIZE, + .setkey = serpent_setkey, + .encrypt = ctr_crypt, + .decrypt = ctr_crypt, + }, + }, +}; + +struct crypt_priv { + struct serpent_ctx *ctx; + bool fpu_enabled; +}; + +static void encrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes) +{ + const unsigned int bsize = SERPENT_BLOCK_SIZE; + struct crypt_priv *ctx = priv; + int i; + + ctx->fpu_enabled = serpent_fpu_begin(ctx->fpu_enabled, nbytes); + + if (nbytes == bsize * SERPENT_PARALLEL_BLOCKS) { + serpent_enc_blk_xway(ctx->ctx, srcdst, srcdst); + return; + } + + for (i = 0; i < nbytes / bsize; i++, srcdst += bsize) + __serpent_encrypt(ctx->ctx, srcdst, srcdst); +} + +static void decrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes) +{ + const unsigned int bsize = SERPENT_BLOCK_SIZE; + struct crypt_priv *ctx = priv; + int i; + + ctx->fpu_enabled = serpent_fpu_begin(ctx->fpu_enabled, nbytes); + + if (nbytes == bsize * SERPENT_PARALLEL_BLOCKS) { + serpent_dec_blk_xway(ctx->ctx, srcdst, srcdst); + return; + } + + for (i = 0; i < nbytes / bsize; i++, srcdst += bsize) + __serpent_decrypt(ctx->ctx, srcdst, srcdst); +} + +struct serpent_lrw_ctx { + struct lrw_table_ctx lrw_table; + struct serpent_ctx serpent_ctx; +}; + +static int lrw_serpent_setkey(struct crypto_tfm *tfm, const u8 *key, + unsigned int keylen) +{ + struct serpent_lrw_ctx *ctx = crypto_tfm_ctx(tfm); + int err; + + err = __serpent_setkey(&ctx->serpent_ctx, key, keylen - + SERPENT_BLOCK_SIZE); + if (err) + return err; + + return lrw_init_table(&ctx->lrw_table, key + keylen - + SERPENT_BLOCK_SIZE); +} + +static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + struct serpent_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + be128 buf[SERPENT_PARALLEL_BLOCKS]; + struct crypt_priv crypt_ctx = { + .ctx = &ctx->serpent_ctx, + .fpu_enabled = false, + }; + struct lrw_crypt_req req = { + .tbuf = buf, + .tbuflen = sizeof(buf), + + .table_ctx = &ctx->lrw_table, + .crypt_ctx = &crypt_ctx, + .crypt_fn = encrypt_callback, + }; + int ret; + + desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; + ret = lrw_crypt(desc, dst, src, nbytes, &req); + serpent_fpu_end(crypt_ctx.fpu_enabled); + + return ret; +} + +static int lrw_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + struct serpent_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + be128 buf[SERPENT_PARALLEL_BLOCKS]; + struct crypt_priv crypt_ctx = { + .ctx = &ctx->serpent_ctx, + .fpu_enabled = false, + }; + struct lrw_crypt_req req = { + .tbuf = buf, + .tbuflen = sizeof(buf), + + .table_ctx = &ctx->lrw_table, + .crypt_ctx = &crypt_ctx, + .crypt_fn = decrypt_callback, + }; + int ret; + + desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; + ret = lrw_crypt(desc, dst, src, nbytes, &req); + serpent_fpu_end(crypt_ctx.fpu_enabled); + + return ret; +} + +static void lrw_exit_tfm(struct crypto_tfm *tfm) +{ + struct serpent_lrw_ctx *ctx = crypto_tfm_ctx(tfm); + + lrw_free_table(&ctx->lrw_table); +} + +static struct crypto_alg blk_lrw_alg = { + .cra_name = "__lrw-serpent-sse2", + .cra_driver_name = "__driver-lrw-serpent-sse2", + .cra_priority = 0, + .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, + .cra_blocksize = SERPENT_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct serpent_lrw_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_blkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(blk_lrw_alg.cra_list), + .cra_exit = lrw_exit_tfm, + .cra_u = { + .blkcipher = { + .min_keysize = SERPENT_MIN_KEY_SIZE + + SERPENT_BLOCK_SIZE, + .max_keysize = SERPENT_MAX_KEY_SIZE + + SERPENT_BLOCK_SIZE, + .ivsize = SERPENT_BLOCK_SIZE, + .setkey = lrw_serpent_setkey, + .encrypt = lrw_encrypt, + .decrypt = lrw_decrypt, + }, + }, +}; + +struct serpent_xts_ctx { + struct serpent_ctx tweak_ctx; + struct serpent_ctx crypt_ctx; +}; + +static int xts_serpent_setkey(struct crypto_tfm *tfm, const u8 *key, + unsigned int keylen) +{ + struct serpent_xts_ctx *ctx = crypto_tfm_ctx(tfm); + u32 *flags = &tfm->crt_flags; + int err; + + /* key consists of keys of equal size concatenated, therefore + * the length must be even + */ + if (keylen % 2) { + *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; + return -EINVAL; + } + + /* first half of xts-key is for crypt */ + err = __serpent_setkey(&ctx->crypt_ctx, key, keylen / 2); + if (err) + return err; + + /* second half of xts-key is for tweak */ + return __serpent_setkey(&ctx->tweak_ctx, key + keylen / 2, keylen / 2); +} + +static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + struct serpent_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + be128 buf[SERPENT_PARALLEL_BLOCKS]; + struct crypt_priv crypt_ctx = { + .ctx = &ctx->crypt_ctx, + .fpu_enabled = false, + }; + struct xts_crypt_req req = { + .tbuf = buf, + .tbuflen = sizeof(buf), + + .tweak_ctx = &ctx->tweak_ctx, + .tweak_fn = XTS_TWEAK_CAST(__serpent_encrypt), + .crypt_ctx = &crypt_ctx, + .crypt_fn = encrypt_callback, + }; + int ret; + + desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; + ret = xts_crypt(desc, dst, src, nbytes, &req); + serpent_fpu_end(crypt_ctx.fpu_enabled); + + return ret; +} + +static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + struct serpent_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + be128 buf[SERPENT_PARALLEL_BLOCKS]; + struct crypt_priv crypt_ctx = { + .ctx = &ctx->crypt_ctx, + .fpu_enabled = false, + }; + struct xts_crypt_req req = { + .tbuf = buf, + .tbuflen = sizeof(buf), + + .tweak_ctx = &ctx->tweak_ctx, + .tweak_fn = XTS_TWEAK_CAST(__serpent_encrypt), + .crypt_ctx = &crypt_ctx, + .crypt_fn = decrypt_callback, + }; + int ret; + + desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; + ret = xts_crypt(desc, dst, src, nbytes, &req); + serpent_fpu_end(crypt_ctx.fpu_enabled); + + return ret; +} + +static struct crypto_alg blk_xts_alg = { + .cra_name = "__xts-serpent-sse2", + .cra_driver_name = "__driver-xts-serpent-sse2", + .cra_priority = 0, + .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, + .cra_blocksize = SERPENT_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct serpent_xts_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_blkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(blk_xts_alg.cra_list), + .cra_u = { + .blkcipher = { + .min_keysize = SERPENT_MIN_KEY_SIZE * 2, + .max_keysize = SERPENT_MAX_KEY_SIZE * 2, + .ivsize = SERPENT_BLOCK_SIZE, + .setkey = xts_serpent_setkey, + .encrypt = xts_encrypt, + .decrypt = xts_decrypt, + }, + }, +}; + +static int ablk_set_key(struct crypto_ablkcipher *tfm, const u8 *key, + unsigned int key_len) +{ + struct async_serpent_ctx *ctx = crypto_ablkcipher_ctx(tfm); + struct crypto_ablkcipher *child = &ctx->cryptd_tfm->base; + int err; + + crypto_ablkcipher_clear_flags(child, CRYPTO_TFM_REQ_MASK); + crypto_ablkcipher_set_flags(child, crypto_ablkcipher_get_flags(tfm) + & CRYPTO_TFM_REQ_MASK); + err = crypto_ablkcipher_setkey(child, key, key_len); + crypto_ablkcipher_set_flags(tfm, crypto_ablkcipher_get_flags(child) + & CRYPTO_TFM_RES_MASK); + return err; +} + +static int __ablk_encrypt(struct ablkcipher_request *req) +{ + struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); + struct async_serpent_ctx *ctx = crypto_ablkcipher_ctx(tfm); + struct blkcipher_desc desc; + + desc.tfm = cryptd_ablkcipher_child(ctx->cryptd_tfm); + desc.info = req->info; + desc.flags = 0; + + return crypto_blkcipher_crt(desc.tfm)->encrypt( + &desc, req->dst, req->src, req->nbytes); +} + +static int ablk_encrypt(struct ablkcipher_request *req) +{ + struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); + struct async_serpent_ctx *ctx = crypto_ablkcipher_ctx(tfm); + + if (!irq_fpu_usable()) { + struct ablkcipher_request *cryptd_req = + ablkcipher_request_ctx(req); + + memcpy(cryptd_req, req, sizeof(*req)); + ablkcipher_request_set_tfm(cryptd_req, &ctx->cryptd_tfm->base); + + return crypto_ablkcipher_encrypt(cryptd_req); + } else { + return __ablk_encrypt(req); + } +} + +static int ablk_decrypt(struct ablkcipher_request *req) +{ + struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); + struct async_serpent_ctx *ctx = crypto_ablkcipher_ctx(tfm); + + if (!irq_fpu_usable()) { + struct ablkcipher_request *cryptd_req = + ablkcipher_request_ctx(req); + + memcpy(cryptd_req, req, sizeof(*req)); + ablkcipher_request_set_tfm(cryptd_req, &ctx->cryptd_tfm->base); + + return crypto_ablkcipher_decrypt(cryptd_req); + } else { + struct blkcipher_desc desc; + + desc.tfm = cryptd_ablkcipher_child(ctx->cryptd_tfm); + desc.info = req->info; + desc.flags = 0; + + return crypto_blkcipher_crt(desc.tfm)->decrypt( + &desc, req->dst, req->src, req->nbytes); + } +} + +static void ablk_exit(struct crypto_tfm *tfm) +{ + struct async_serpent_ctx *ctx = crypto_tfm_ctx(tfm); + + cryptd_free_ablkcipher(ctx->cryptd_tfm); +} + +static void ablk_init_common(struct crypto_tfm *tfm, + struct cryptd_ablkcipher *cryptd_tfm) +{ + struct async_serpent_ctx *ctx = crypto_tfm_ctx(tfm); + + ctx->cryptd_tfm = cryptd_tfm; + tfm->crt_ablkcipher.reqsize = sizeof(struct ablkcipher_request) + + crypto_ablkcipher_reqsize(&cryptd_tfm->base); +} + +static int ablk_ecb_init(struct crypto_tfm *tfm) +{ + struct cryptd_ablkcipher *cryptd_tfm; + + cryptd_tfm = cryptd_alloc_ablkcipher("__driver-ecb-serpent-sse2", 0, 0); + if (IS_ERR(cryptd_tfm)) + return PTR_ERR(cryptd_tfm); + ablk_init_common(tfm, cryptd_tfm); + return 0; +} + +static struct crypto_alg ablk_ecb_alg = { + .cra_name = "ecb(serpent)", + .cra_driver_name = "ecb-serpent-sse2", + .cra_priority = 400, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, + .cra_blocksize = SERPENT_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct async_serpent_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(ablk_ecb_alg.cra_list), + .cra_init = ablk_ecb_init, + .cra_exit = ablk_exit, + .cra_u = { + .ablkcipher = { + .min_keysize = SERPENT_MIN_KEY_SIZE, + .max_keysize = SERPENT_MAX_KEY_SIZE, + .setkey = ablk_set_key, + .encrypt = ablk_encrypt, + .decrypt = ablk_decrypt, + }, + }, +}; + +static int ablk_cbc_init(struct crypto_tfm *tfm) +{ + struct cryptd_ablkcipher *cryptd_tfm; + + cryptd_tfm = cryptd_alloc_ablkcipher("__driver-cbc-serpent-sse2", 0, 0); + if (IS_ERR(cryptd_tfm)) + return PTR_ERR(cryptd_tfm); + ablk_init_common(tfm, cryptd_tfm); + return 0; +} + +static struct crypto_alg ablk_cbc_alg = { + .cra_name = "cbc(serpent)", + .cra_driver_name = "cbc-serpent-sse2", + .cra_priority = 400, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, + .cra_blocksize = SERPENT_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct async_serpent_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(ablk_cbc_alg.cra_list), + .cra_init = ablk_cbc_init, + .cra_exit = ablk_exit, + .cra_u = { + .ablkcipher = { + .min_keysize = SERPENT_MIN_KEY_SIZE, + .max_keysize = SERPENT_MAX_KEY_SIZE, + .ivsize = SERPENT_BLOCK_SIZE, + .setkey = ablk_set_key, + .encrypt = __ablk_encrypt, + .decrypt = ablk_decrypt, + }, + }, +}; + +static int ablk_ctr_init(struct crypto_tfm *tfm) +{ + struct cryptd_ablkcipher *cryptd_tfm; + + cryptd_tfm = cryptd_alloc_ablkcipher("__driver-ctr-serpent-sse2", 0, 0); + if (IS_ERR(cryptd_tfm)) + return PTR_ERR(cryptd_tfm); + ablk_init_common(tfm, cryptd_tfm); + return 0; +} + +static struct crypto_alg ablk_ctr_alg = { + .cra_name = "ctr(serpent)", + .cra_driver_name = "ctr-serpent-sse2", + .cra_priority = 400, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, + .cra_blocksize = 1, + .cra_ctxsize = sizeof(struct async_serpent_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(ablk_ctr_alg.cra_list), + .cra_init = ablk_ctr_init, + .cra_exit = ablk_exit, + .cra_u = { + .ablkcipher = { + .min_keysize = SERPENT_MIN_KEY_SIZE, + .max_keysize = SERPENT_MAX_KEY_SIZE, + .ivsize = SERPENT_BLOCK_SIZE, + .setkey = ablk_set_key, + .encrypt = ablk_encrypt, + .decrypt = ablk_encrypt, + .geniv = "chainiv", + }, + }, +}; + +static int ablk_lrw_init(struct crypto_tfm *tfm) +{ + struct cryptd_ablkcipher *cryptd_tfm; + + cryptd_tfm = cryptd_alloc_ablkcipher("__driver-lrw-serpent-sse2", 0, 0); + if (IS_ERR(cryptd_tfm)) + return PTR_ERR(cryptd_tfm); + ablk_init_common(tfm, cryptd_tfm); + return 0; +} + +static struct crypto_alg ablk_lrw_alg = { + .cra_name = "lrw(serpent)", + .cra_driver_name = "lrw-serpent-sse2", + .cra_priority = 400, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, + .cra_blocksize = SERPENT_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct async_serpent_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(ablk_lrw_alg.cra_list), + .cra_init = ablk_lrw_init, + .cra_exit = ablk_exit, + .cra_u = { + .ablkcipher = { + .min_keysize = SERPENT_MIN_KEY_SIZE + + SERPENT_BLOCK_SIZE, + .max_keysize = SERPENT_MAX_KEY_SIZE + + SERPENT_BLOCK_SIZE, + .ivsize = SERPENT_BLOCK_SIZE, + .setkey = ablk_set_key, + .encrypt = ablk_encrypt, + .decrypt = ablk_decrypt, + }, + }, +}; + +static int ablk_xts_init(struct crypto_tfm *tfm) +{ + struct cryptd_ablkcipher *cryptd_tfm; + + cryptd_tfm = cryptd_alloc_ablkcipher("__driver-xts-serpent-sse2", 0, 0); + if (IS_ERR(cryptd_tfm)) + return PTR_ERR(cryptd_tfm); + ablk_init_common(tfm, cryptd_tfm); + return 0; +} + +static struct crypto_alg ablk_xts_alg = { + .cra_name = "xts(serpent)", + .cra_driver_name = "xts-serpent-sse2", + .cra_priority = 400, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, + .cra_blocksize = SERPENT_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct async_serpent_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(ablk_xts_alg.cra_list), + .cra_init = ablk_xts_init, + .cra_exit = ablk_exit, + .cra_u = { + .ablkcipher = { + .min_keysize = SERPENT_MIN_KEY_SIZE * 2, + .max_keysize = SERPENT_MAX_KEY_SIZE * 2, + .ivsize = SERPENT_BLOCK_SIZE, + .setkey = ablk_set_key, + .encrypt = ablk_encrypt, + .decrypt = ablk_decrypt, + }, + }, +}; + +static int __init serpent_sse2_init(void) +{ + int err; + + if (!cpu_has_xmm2) { + printk(KERN_INFO "SSE2 instructions are not detected.\n"); + return -ENODEV; + } + + err = crypto_register_alg(&blk_ecb_alg); + if (err) + goto blk_ecb_err; + err = crypto_register_alg(&blk_cbc_alg); + if (err) + goto blk_cbc_err; + err = crypto_register_alg(&blk_ctr_alg); + if (err) + goto blk_ctr_err; + err = crypto_register_alg(&ablk_ecb_alg); + if (err) + goto ablk_ecb_err; + err = crypto_register_alg(&ablk_cbc_alg); + if (err) + goto ablk_cbc_err; + err = crypto_register_alg(&ablk_ctr_alg); + if (err) + goto ablk_ctr_err; + err = crypto_register_alg(&blk_lrw_alg); + if (err) + goto blk_lrw_err; + err = crypto_register_alg(&ablk_lrw_alg); + if (err) + goto ablk_lrw_err; + err = crypto_register_alg(&blk_xts_alg); + if (err) + goto blk_xts_err; + err = crypto_register_alg(&ablk_xts_alg); + if (err) + goto ablk_xts_err; + return err; + + crypto_unregister_alg(&ablk_xts_alg); +ablk_xts_err: + crypto_unregister_alg(&blk_xts_alg); +blk_xts_err: + crypto_unregister_alg(&ablk_lrw_alg); +ablk_lrw_err: + crypto_unregister_alg(&blk_lrw_alg); +blk_lrw_err: + crypto_unregister_alg(&ablk_ctr_alg); +ablk_ctr_err: + crypto_unregister_alg(&ablk_cbc_alg); +ablk_cbc_err: + crypto_unregister_alg(&ablk_ecb_alg); +ablk_ecb_err: + crypto_unregister_alg(&blk_ctr_alg); +blk_ctr_err: + crypto_unregister_alg(&blk_cbc_alg); +blk_cbc_err: + crypto_unregister_alg(&blk_ecb_alg); +blk_ecb_err: + return err; +} + +static void __exit serpent_sse2_exit(void) +{ + crypto_unregister_alg(&ablk_xts_alg); + crypto_unregister_alg(&blk_xts_alg); + crypto_unregister_alg(&ablk_lrw_alg); + crypto_unregister_alg(&blk_lrw_alg); + crypto_unregister_alg(&ablk_ctr_alg); + crypto_unregister_alg(&ablk_cbc_alg); + crypto_unregister_alg(&ablk_ecb_alg); + crypto_unregister_alg(&blk_ctr_alg); + crypto_unregister_alg(&blk_cbc_alg); + crypto_unregister_alg(&blk_ecb_alg); +} + +module_init(serpent_sse2_init); +module_exit(serpent_sse2_exit); + +MODULE_DESCRIPTION("Serpent Cipher Algorithm, SSE2 optimized"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("serpent"); diff --git a/arch/x86/crypto/twofish_glue_3way.c b/arch/x86/crypto/twofish_glue_3way.c index 5ede9c444c3e..7fee8c152f93 100644 --- a/arch/x86/crypto/twofish_glue_3way.c +++ b/arch/x86/crypto/twofish_glue_3way.c @@ -32,6 +32,8 @@ #include <crypto/algapi.h> #include <crypto/twofish.h> #include <crypto/b128ops.h> +#include <crypto/lrw.h> +#include <crypto/xts.h> /* regular block cipher functions from twofish_x86_64 module */ asmlinkage void twofish_enc_blk(struct twofish_ctx *ctx, u8 *dst, @@ -432,6 +434,209 @@ static struct crypto_alg blk_ctr_alg = { }, }; +static void encrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes) +{ + const unsigned int bsize = TF_BLOCK_SIZE; + struct twofish_ctx *ctx = priv; + int i; + + if (nbytes == 3 * bsize) { + twofish_enc_blk_3way(ctx, srcdst, srcdst); + return; + } + + for (i = 0; i < nbytes / bsize; i++, srcdst += bsize) + twofish_enc_blk(ctx, srcdst, srcdst); +} + +static void decrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes) +{ + const unsigned int bsize = TF_BLOCK_SIZE; + struct twofish_ctx *ctx = priv; + int i; + + if (nbytes == 3 * bsize) { + twofish_dec_blk_3way(ctx, srcdst, srcdst); + return; + } + + for (i = 0; i < nbytes / bsize; i++, srcdst += bsize) + twofish_dec_blk(ctx, srcdst, srcdst); +} + +struct twofish_lrw_ctx { + struct lrw_table_ctx lrw_table; + struct twofish_ctx twofish_ctx; +}; + +static int lrw_twofish_setkey(struct crypto_tfm *tfm, const u8 *key, + unsigned int keylen) +{ + struct twofish_lrw_ctx *ctx = crypto_tfm_ctx(tfm); + int err; + + err = __twofish_setkey(&ctx->twofish_ctx, key, keylen - TF_BLOCK_SIZE, + &tfm->crt_flags); + if (err) + return err; + + return lrw_init_table(&ctx->lrw_table, key + keylen - TF_BLOCK_SIZE); +} + +static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + struct twofish_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + be128 buf[3]; + struct lrw_crypt_req req = { + .tbuf = buf, + .tbuflen = sizeof(buf), + + .table_ctx = &ctx->lrw_table, + .crypt_ctx = &ctx->twofish_ctx, + .crypt_fn = encrypt_callback, + }; + + return lrw_crypt(desc, dst, src, nbytes, &req); +} + +static int lrw_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + struct twofish_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + be128 buf[3]; + struct lrw_crypt_req req = { + .tbuf = buf, + .tbuflen = sizeof(buf), + + .table_ctx = &ctx->lrw_table, + .crypt_ctx = &ctx->twofish_ctx, + .crypt_fn = decrypt_callback, + }; + + return lrw_crypt(desc, dst, src, nbytes, &req); +} + +static void lrw_exit_tfm(struct crypto_tfm *tfm) +{ + struct twofish_lrw_ctx *ctx = crypto_tfm_ctx(tfm); + + lrw_free_table(&ctx->lrw_table); +} + +static struct crypto_alg blk_lrw_alg = { + .cra_name = "lrw(twofish)", + .cra_driver_name = "lrw-twofish-3way", + .cra_priority = 300, + .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, + .cra_blocksize = TF_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct twofish_lrw_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_blkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(blk_lrw_alg.cra_list), + .cra_exit = lrw_exit_tfm, + .cra_u = { + .blkcipher = { + .min_keysize = TF_MIN_KEY_SIZE + TF_BLOCK_SIZE, + .max_keysize = TF_MAX_KEY_SIZE + TF_BLOCK_SIZE, + .ivsize = TF_BLOCK_SIZE, + .setkey = lrw_twofish_setkey, + .encrypt = lrw_encrypt, + .decrypt = lrw_decrypt, + }, + }, +}; + +struct twofish_xts_ctx { + struct twofish_ctx tweak_ctx; + struct twofish_ctx crypt_ctx; +}; + +static int xts_twofish_setkey(struct crypto_tfm *tfm, const u8 *key, + unsigned int keylen) +{ + struct twofish_xts_ctx *ctx = crypto_tfm_ctx(tfm); + u32 *flags = &tfm->crt_flags; + int err; + + /* key consists of keys of equal size concatenated, therefore + * the length must be even + */ + if (keylen % 2) { + *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; + return -EINVAL; + } + + /* first half of xts-key is for crypt */ + err = __twofish_setkey(&ctx->crypt_ctx, key, keylen / 2, flags); + if (err) + return err; + + /* second half of xts-key is for tweak */ + return __twofish_setkey(&ctx->tweak_ctx, key + keylen / 2, keylen / 2, + flags); +} + +static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + struct twofish_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + be128 buf[3]; + struct xts_crypt_req req = { + .tbuf = buf, + .tbuflen = sizeof(buf), + + .tweak_ctx = &ctx->tweak_ctx, + .tweak_fn = XTS_TWEAK_CAST(twofish_enc_blk), + .crypt_ctx = &ctx->crypt_ctx, + .crypt_fn = encrypt_callback, + }; + + return xts_crypt(desc, dst, src, nbytes, &req); +} + +static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + struct twofish_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + be128 buf[3]; + struct xts_crypt_req req = { + .tbuf = buf, + .tbuflen = sizeof(buf), + + .tweak_ctx = &ctx->tweak_ctx, + .tweak_fn = XTS_TWEAK_CAST(twofish_enc_blk), + .crypt_ctx = &ctx->crypt_ctx, + .crypt_fn = decrypt_callback, + }; + + return xts_crypt(desc, dst, src, nbytes, &req); +} + +static struct crypto_alg blk_xts_alg = { + .cra_name = "xts(twofish)", + .cra_driver_name = "xts-twofish-3way", + .cra_priority = 300, + .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, + .cra_blocksize = TF_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct twofish_xts_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_blkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(blk_xts_alg.cra_list), + .cra_u = { + .blkcipher = { + .min_keysize = TF_MIN_KEY_SIZE * 2, + .max_keysize = TF_MAX_KEY_SIZE * 2, + .ivsize = TF_BLOCK_SIZE, + .setkey = xts_twofish_setkey, + .encrypt = xts_encrypt, + .decrypt = xts_decrypt, + }, + }, +}; + int __init init(void) { int err; @@ -445,9 +650,20 @@ int __init init(void) err = crypto_register_alg(&blk_ctr_alg); if (err) goto ctr_err; + err = crypto_register_alg(&blk_lrw_alg); + if (err) + goto blk_lrw_err; + err = crypto_register_alg(&blk_xts_alg); + if (err) + goto blk_xts_err; return 0; + crypto_unregister_alg(&blk_xts_alg); +blk_xts_err: + crypto_unregister_alg(&blk_lrw_alg); +blk_lrw_err: + crypto_unregister_alg(&blk_ctr_alg); ctr_err: crypto_unregister_alg(&blk_cbc_alg); cbc_err: @@ -458,6 +674,8 @@ ecb_err: void __exit fini(void) { + crypto_unregister_alg(&blk_xts_alg); + crypto_unregister_alg(&blk_lrw_alg); crypto_unregister_alg(&blk_ctr_alg); crypto_unregister_alg(&blk_cbc_alg); crypto_unregister_alg(&blk_ecb_alg); |