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/*-
* The white paper of AES-NI instructions can be downloaded from:
* http://softwarecommunity.intel.com/isn/downloads/intelavx/AES-Instructions-Set_WP.pdf
*
* Copyright (C) 2008-2010, Intel Corporation
* Author: Huang Ying <ying.huang@intel.com>
* Vinodh Gopal <vinodh.gopal@intel.com>
* Kahraman Akdemir
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* - Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <machine/asmacros.h>
.text
ENTRY(_key_expansion_128)
_key_expansion_256a:
.cfi_startproc
pshufd $0b11111111,%xmm1,%xmm1
shufps $0b00010000,%xmm0,%xmm4
pxor %xmm4,%xmm0
shufps $0b10001100,%xmm0,%xmm4
pxor %xmm4,%xmm0
pxor %xmm1,%xmm0
movaps %xmm0,(%edx)
addl $0x10,%edx
retl
.cfi_endproc
END(_key_expansion_128)
ENTRY(_key_expansion_192a)
.cfi_startproc
pshufd $0b01010101,%xmm1,%xmm1
shufps $0b00010000,%xmm0,%xmm4
pxor %xmm4,%xmm0
shufps $0b10001100,%xmm0,%xmm4
pxor %xmm4,%xmm0
pxor %xmm1,%xmm0
movaps %xmm2,%xmm5
movaps %xmm2,%xmm6
pslldq $4,%xmm5
pshufd $0b11111111,%xmm0,%xmm3
pxor %xmm3,%xmm2
pxor %xmm5,%xmm2
movaps %xmm0,%xmm1
shufps $0b01000100,%xmm0,%xmm6
movaps %xmm6,(%edx)
shufps $0b01001110,%xmm2,%xmm1
movaps %xmm1,0x10(%edx)
addl $0x20,%edx
retl
.cfi_endproc
END(_key_expansion_192a)
ENTRY(_key_expansion_192b)
.cfi_startproc
pshufd $0b01010101,%xmm1,%xmm1
shufps $0b00010000,%xmm0,%xmm4
pxor %xmm4,%xmm0
shufps $0b10001100,%xmm0,%xmm4
pxor %xmm4,%xmm0
pxor %xmm1,%xmm0
movaps %xmm2,%xmm5
pslldq $4,%xmm5
pshufd $0b11111111,%xmm0,%xmm3
pxor %xmm3,%xmm2
pxor %xmm5,%xmm2
movaps %xmm0,(%edx)
addl $0x10,%edx
retl
.cfi_endproc
END(_key_expansion_192b)
ENTRY(_key_expansion_256b)
.cfi_startproc
pshufd $0b10101010,%xmm1,%xmm1
shufps $0b00010000,%xmm2,%xmm4
pxor %xmm4,%xmm2
shufps $0b10001100,%xmm2,%xmm4
pxor %xmm4,%xmm2
pxor %xmm1,%xmm2
movaps %xmm2,(%edx)
addl $0x10,%edx
retl
.cfi_endproc
END(_key_expansion_256b)
ENTRY(aesni_set_enckey)
.cfi_startproc
pushl %ebp
.cfi_adjust_cfa_offset 4
movl %esp,%ebp
movl 8(%ebp),%ecx
movl 12(%ebp),%edx
movups (%ecx),%xmm0 # user key (first 16 bytes)
movaps %xmm0,(%edx)
addl $0x10,%edx # key addr
pxor %xmm4,%xmm4 # xmm4 is assumed 0 in _key_expansion_x
cmpl $12,16(%ebp) # rounds
jb .Lenc_key128
je .Lenc_key192
movups 0x10(%ecx),%xmm2 # other user key
movaps %xmm2,(%edx)
addl $0x10,%edx
// aeskeygenassist $0x1,%xmm2,%xmm1 # round 1
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x01
call _key_expansion_256a
// aeskeygenassist $0x1,%xmm0,%xmm1
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x01
call _key_expansion_256b
// aeskeygenassist $0x2,%xmm2,%xmm1 # round 2
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x02
call _key_expansion_256a
// aeskeygenassist $0x2,%xmm0,%xmm1
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x02
call _key_expansion_256b
// aeskeygenassist $0x4,%xmm2,%xmm1 # round 3
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x04
call _key_expansion_256a
// aeskeygenassist $0x4,%xmm0,%xmm1
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x04
call _key_expansion_256b
// aeskeygenassist $0x8,%xmm2,%xmm1 # round 4
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x08
call _key_expansion_256a
// aeskeygenassist $0x8,%xmm0,%xmm1
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x08
call _key_expansion_256b
// aeskeygenassist $0x10,%xmm2,%xmm1 # round 5
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x10
call _key_expansion_256a
// aeskeygenassist $0x10,%xmm0,%xmm1
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x10
call _key_expansion_256b
// aeskeygenassist $0x20,%xmm2,%xmm1 # round 6
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x20
call _key_expansion_256a
// aeskeygenassist $0x20,%xmm0,%xmm1
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x20
call _key_expansion_256b
// aeskeygenassist $0x40,%xmm2,%xmm1 # round 7
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x40
call _key_expansion_256a
.cfi_adjust_cfa_offset -4
leave
retl
.Lenc_key192:
movq 0x10(%ecx),%xmm2 # other user key
// aeskeygenassist $0x1,%xmm2,%xmm1 # round 1
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x01
call _key_expansion_192a
// aeskeygenassist $0x2,%xmm2,%xmm1 # round 2
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x02
call _key_expansion_192b
// aeskeygenassist $0x4,%xmm2,%xmm1 # round 3
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x04
call _key_expansion_192a
// aeskeygenassist $0x8,%xmm2,%xmm1 # round 4
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x08
call _key_expansion_192b
// aeskeygenassist $0x10,%xmm2,%xmm1 # round 5
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x10
call _key_expansion_192a
// aeskeygenassist $0x20,%xmm2,%xmm1 # round 6
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x20
call _key_expansion_192b
// aeskeygenassist $0x40,%xmm2,%xmm1 # round 7
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x40
call _key_expansion_192a
// aeskeygenassist $0x80,%xmm2,%xmm1 # round 8
.byte 0x66,0x0f,0x3a,0xdf,0xca,0x80
call _key_expansion_192b
leave
.cfi_adjust_cfa_offset -4
retl
.Lenc_key128:
// aeskeygenassist $0x1,%xmm0,%xmm1 # round 1
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x01
call _key_expansion_128
// aeskeygenassist $0x2,%xmm0,%xmm1 # round 2
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x02
call _key_expansion_128
// aeskeygenassist $0x4,%xmm0,%xmm1 # round 3
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x04
call _key_expansion_128
// aeskeygenassist $0x8,%xmm0,%xmm1 # round 4
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x08
call _key_expansion_128
// aeskeygenassist $0x10,%xmm0,%xmm1 # round 5
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x10
call _key_expansion_128
// aeskeygenassist $0x20,%xmm0,%xmm1 # round 6
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x20
call _key_expansion_128
// aeskeygenassist $0x40,%xmm0,%xmm1 # round 7
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x40
call _key_expansion_128
// aeskeygenassist $0x80,%xmm0,%xmm1 # round 8
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x80
call _key_expansion_128
// aeskeygenassist $0x1b,%xmm0,%xmm1 # round 9
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x1b
call _key_expansion_128
// aeskeygenassist $0x36,%xmm0,%xmm1 # round 10
.byte 0x66,0x0f,0x3a,0xdf,0xc8,0x36
call _key_expansion_128
leave
.cfi_adjust_cfa_offset -4
retl
.cfi_endproc
END(aesni_set_enckey)
ENTRY(aesni_set_deckey)
.cfi_startproc
pushl %ebp
.cfi_adjust_cfa_offset 4
movl %esp,%ebp
movl 16(%ebp),%eax /* rounds */
movl %eax,%ecx
shll $4,%ecx
addl 8(%ebp),%ecx /* encrypt_schedule last quad */
movl 12(%ebp),%edx /* decrypt_schedule */
movdqa (%ecx),%xmm0
movdqa %xmm0,(%edx)
decl %eax
1:
addl $0x10,%edx
subl $0x10,%ecx
// aesimc (%ecx),%xmm1
.byte 0x66,0x0f,0x38,0xdb,0x09
movdqa %xmm1,(%edx)
decl %eax
jne 1b
addl $0x10,%edx
subl $0x10,%ecx
movdqa (%ecx),%xmm0
movdqa %xmm0,(%edx)
leave
.cfi_adjust_cfa_offset -4
retl
.cfi_endproc
END(aesni_set_deckey)
.ident "$FreeBSD$"
|
