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aes_amd64.asm
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aes_amd64.asm
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; ---------------------------------------------------------------------------
; Copyright (c) 1998-2013, Brian Gladman, Worcester, UK. All rights reserved.
;
; The redistribution and use of this software (with or without changes)
; is allowed without the payment of fees or royalties provided that:
;
; source code distributions include the above copyright notice, this
; list of conditions and the following disclaimer;
;
; binary distributions include the above copyright notice, this list
; of conditions and the following disclaimer in their documentation.
;
; This software is provided 'as is' with no explicit or implied warranties
; in respect of its operation, including, but not limited to, correctness
; and fitness for purpose.
; ---------------------------------------------------------------------------
; Issue Date: 20/12/2007
;
; I am grateful to Dag Arne Osvik for many discussions of the techniques that
; can be used to optimise AES assembler code on AMD64/EM64T architectures.
; Some of the techniques used in this implementation are the result of
; suggestions made by him for which I am most grateful.
; An AES implementation for AMD64 processors using the YASM assembler. This
; implemetation provides only encryption, decryption and hence requires key
; scheduling support in C. It uses 8k bytes of tables but its encryption and
; decryption performance is very close to that obtained using large tables.
; It can use either Windows or Gnu/Linux calling conventions, which are as
; follows:
; windows gnu/linux
;
; in_blk rcx rdi
; out_blk rdx rsi
; context (cx) r8 rdx
;
; preserved rsi - + rbx, rbp, rsp, r12, r13, r14 & r15
; registers rdi - on both
;
; destroyed - rsi + rax, rcx, rdx, r8, r9, r10 & r11
; registers - rdi on both
;
; The default convention is that for windows, the gnu/linux convention being
; used if __GNUC__ is defined.
;
; Define _SEH_ to include support for Win64 structured exception handling
; (this requires YASM version 0.6 or later).
;
; This code provides the standard AES block size (128 bits, 16 bytes) and the
; three standard AES key sizes (128, 192 and 256 bits). It has the same call
; interface as my C implementation. It uses the Microsoft C AMD64 calling
; conventions in which the three parameters are placed in rcx, rdx and r8
; respectively. The rbx, rsi, rdi, rbp and r12..r15 registers are preserved.
;
; AES_RETURN aes_encrypt(const unsigned char in_blk[],
; unsigned char out_blk[], const aes_encrypt_ctx cx[1]);
;
; AES_RETURN aes_decrypt(const unsigned char in_blk[],
; unsigned char out_blk[], const aes_decrypt_ctx cx[1]);
;
; AES_RETURN aes_encrypt_key<NNN>(const unsigned char key[],
; const aes_encrypt_ctx cx[1]);
;
; AES_RETURN aes_decrypt_key<NNN>(const unsigned char key[],
; const aes_decrypt_ctx cx[1]);
;
; AES_RETURN aes_encrypt_key(const unsigned char key[],
; unsigned int len, const aes_decrypt_ctx cx[1]);
;
; AES_RETURN aes_decrypt_key(const unsigned char key[],
; unsigned int len, const aes_decrypt_ctx cx[1]);
;
; where <NNN> is 128, 192 or 256. In the last two calls the length can be in
; either bits or bytes.
;----------------------------------------------------------------------------
; Comment in/out the following lines to obtain the desired subroutines. These
; selections MUST match those in the C header files aes.h and aesopt.h
%define USE_INTEL_AES_IF_PRESENT
%define AES_128 ; define if AES with 128 bit keys is needed
%define AES_192 ; define if AES with 192 bit keys is needed
%define AES_256 ; define if AES with 256 bit keys is needed
%define AES_VAR ; define if a variable key size is needed
%define ENCRYPTION ; define if encryption is needed
%define DECRYPTION ; define if decryption is needed
;----------------------------------------------------------------------------
%ifdef USE_INTEL_AES_IF_PRESENT
%define aes_ni(x) aes_ %+ x %+ _i
%undef AES_REV_DKS
%else
%define aes_ni(x) aes_ %+ x
%define AES_REV_DKS
%endif
%define LAST_ROUND_TABLES ; define for the faster version using extra tables
; The encryption key schedule has the following in memory layout where N is the
; number of rounds (10, 12 or 14):
;
; lo: | input key (round 0) | ; each round is four 32-bit words
; | encryption round 1 |
; | encryption round 2 |
; ....
; | encryption round N-1 |
; hi: | encryption round N |
;
; The decryption key schedule is normally set up so that it has the same
; layout as above by actually reversing the order of the encryption key
; schedule in memory (this happens when AES_REV_DKS is set):
;
; lo: | decryption round 0 | = | encryption round N |
; | decryption round 1 | = INV_MIX_COL[ | encryption round N-1 | ]
; | decryption round 2 | = INV_MIX_COL[ | encryption round N-2 | ]
; .... ....
; | decryption round N-1 | = INV_MIX_COL[ | encryption round 1 | ]
; hi: | decryption round N | = | input key (round 0) |
;
; with rounds except the first and last modified using inv_mix_column()
; But if AES_REV_DKS is NOT set the order of keys is left as it is for
; encryption so that it has to be accessed in reverse when used for
; decryption (although the inverse mix column modifications are done)
;
; lo: | decryption round 0 | = | input key (round 0) |
; | decryption round 1 | = INV_MIX_COL[ | encryption round 1 | ]
; | decryption round 2 | = INV_MIX_COL[ | encryption round 2 | ]
; .... ....
; | decryption round N-1 | = INV_MIX_COL[ | encryption round N-1 | ]
; hi: | decryption round N | = | encryption round N |
;
; This layout is faster when the assembler key scheduling is used (not
; used here).
;
; The DLL interface must use the _stdcall convention in which the number
; of bytes of parameter space is added after an @ to the rouutine's name.
; We must also remove our parameters from the stack before return (see
; the do_exit macro). Define DLL_EXPORT for the Dynamic Link Library version.
; %define DLL_EXPORT
; End of user defines
%ifdef AES_VAR
%ifndef AES_128
%define AES_128
%endif
%ifndef AES_192
%define AES_192
%endif
%ifndef AES_256
%define AES_256
%endif
%endif
%ifdef AES_VAR
%define KS_LENGTH 60
%elifdef AES_256
%define KS_LENGTH 60
%elifdef AES_192
%define KS_LENGTH 52
%else
%define KS_LENGTH 44
%endif
%define r0 rax
%define r1 rdx
%define r2 rcx
%define r3 rbx
%define r4 rsi
%define r5 rdi
%define r6 rbp
%define r7 rsp
%define raxd eax
%define rdxd edx
%define rcxd ecx
%define rbxd ebx
%define rsid esi
%define rdid edi
%define rbpd ebp
%define rspd esp
%define raxb al
%define rdxb dl
%define rcxb cl
%define rbxb bl
%define rsib sil
%define rdib dil
%define rbpb bpl
%define rspb spl
%define r0h ah
%define r1h dh
%define r2h ch
%define r3h bh
%define r0d eax
%define r1d edx
%define r2d ecx
%define r3d ebx
; finite field multiplies by {02}, {04} and {08}
%define f2(x) ((x<<1)^(((x>>7)&1)*0x11b))
%define f4(x) ((x<<2)^(((x>>6)&1)*0x11b)^(((x>>6)&2)*0x11b))
%define f8(x) ((x<<3)^(((x>>5)&1)*0x11b)^(((x>>5)&2)*0x11b)^(((x>>5)&4)*0x11b))
; finite field multiplies required in table generation
%define f3(x) (f2(x) ^ x)
%define f9(x) (f8(x) ^ x)
%define fb(x) (f8(x) ^ f2(x) ^ x)
%define fd(x) (f8(x) ^ f4(x) ^ x)
%define fe(x) (f8(x) ^ f4(x) ^ f2(x))
; macro for expanding S-box data
%macro enc_vals 1
db %1(0x63),%1(0x7c),%1(0x77),%1(0x7b),%1(0xf2),%1(0x6b),%1(0x6f),%1(0xc5)
db %1(0x30),%1(0x01),%1(0x67),%1(0x2b),%1(0xfe),%1(0xd7),%1(0xab),%1(0x76)
db %1(0xca),%1(0x82),%1(0xc9),%1(0x7d),%1(0xfa),%1(0x59),%1(0x47),%1(0xf0)
db %1(0xad),%1(0xd4),%1(0xa2),%1(0xaf),%1(0x9c),%1(0xa4),%1(0x72),%1(0xc0)
db %1(0xb7),%1(0xfd),%1(0x93),%1(0x26),%1(0x36),%1(0x3f),%1(0xf7),%1(0xcc)
db %1(0x34),%1(0xa5),%1(0xe5),%1(0xf1),%1(0x71),%1(0xd8),%1(0x31),%1(0x15)
db %1(0x04),%1(0xc7),%1(0x23),%1(0xc3),%1(0x18),%1(0x96),%1(0x05),%1(0x9a)
db %1(0x07),%1(0x12),%1(0x80),%1(0xe2),%1(0xeb),%1(0x27),%1(0xb2),%1(0x75)
db %1(0x09),%1(0x83),%1(0x2c),%1(0x1a),%1(0x1b),%1(0x6e),%1(0x5a),%1(0xa0)
db %1(0x52),%1(0x3b),%1(0xd6),%1(0xb3),%1(0x29),%1(0xe3),%1(0x2f),%1(0x84)
db %1(0x53),%1(0xd1),%1(0x00),%1(0xed),%1(0x20),%1(0xfc),%1(0xb1),%1(0x5b)
db %1(0x6a),%1(0xcb),%1(0xbe),%1(0x39),%1(0x4a),%1(0x4c),%1(0x58),%1(0xcf)
db %1(0xd0),%1(0xef),%1(0xaa),%1(0xfb),%1(0x43),%1(0x4d),%1(0x33),%1(0x85)
db %1(0x45),%1(0xf9),%1(0x02),%1(0x7f),%1(0x50),%1(0x3c),%1(0x9f),%1(0xa8)
db %1(0x51),%1(0xa3),%1(0x40),%1(0x8f),%1(0x92),%1(0x9d),%1(0x38),%1(0xf5)
db %1(0xbc),%1(0xb6),%1(0xda),%1(0x21),%1(0x10),%1(0xff),%1(0xf3),%1(0xd2)
db %1(0xcd),%1(0x0c),%1(0x13),%1(0xec),%1(0x5f),%1(0x97),%1(0x44),%1(0x17)
db %1(0xc4),%1(0xa7),%1(0x7e),%1(0x3d),%1(0x64),%1(0x5d),%1(0x19),%1(0x73)
db %1(0x60),%1(0x81),%1(0x4f),%1(0xdc),%1(0x22),%1(0x2a),%1(0x90),%1(0x88)
db %1(0x46),%1(0xee),%1(0xb8),%1(0x14),%1(0xde),%1(0x5e),%1(0x0b),%1(0xdb)
db %1(0xe0),%1(0x32),%1(0x3a),%1(0x0a),%1(0x49),%1(0x06),%1(0x24),%1(0x5c)
db %1(0xc2),%1(0xd3),%1(0xac),%1(0x62),%1(0x91),%1(0x95),%1(0xe4),%1(0x79)
db %1(0xe7),%1(0xc8),%1(0x37),%1(0x6d),%1(0x8d),%1(0xd5),%1(0x4e),%1(0xa9)
db %1(0x6c),%1(0x56),%1(0xf4),%1(0xea),%1(0x65),%1(0x7a),%1(0xae),%1(0x08)
db %1(0xba),%1(0x78),%1(0x25),%1(0x2e),%1(0x1c),%1(0xa6),%1(0xb4),%1(0xc6)
db %1(0xe8),%1(0xdd),%1(0x74),%1(0x1f),%1(0x4b),%1(0xbd),%1(0x8b),%1(0x8a)
db %1(0x70),%1(0x3e),%1(0xb5),%1(0x66),%1(0x48),%1(0x03),%1(0xf6),%1(0x0e)
db %1(0x61),%1(0x35),%1(0x57),%1(0xb9),%1(0x86),%1(0xc1),%1(0x1d),%1(0x9e)
db %1(0xe1),%1(0xf8),%1(0x98),%1(0x11),%1(0x69),%1(0xd9),%1(0x8e),%1(0x94)
db %1(0x9b),%1(0x1e),%1(0x87),%1(0xe9),%1(0xce),%1(0x55),%1(0x28),%1(0xdf)
db %1(0x8c),%1(0xa1),%1(0x89),%1(0x0d),%1(0xbf),%1(0xe6),%1(0x42),%1(0x68)
db %1(0x41),%1(0x99),%1(0x2d),%1(0x0f),%1(0xb0),%1(0x54),%1(0xbb),%1(0x16)
%endmacro
%macro dec_vals 1
db %1(0x52),%1(0x09),%1(0x6a),%1(0xd5),%1(0x30),%1(0x36),%1(0xa5),%1(0x38)
db %1(0xbf),%1(0x40),%1(0xa3),%1(0x9e),%1(0x81),%1(0xf3),%1(0xd7),%1(0xfb)
db %1(0x7c),%1(0xe3),%1(0x39),%1(0x82),%1(0x9b),%1(0x2f),%1(0xff),%1(0x87)
db %1(0x34),%1(0x8e),%1(0x43),%1(0x44),%1(0xc4),%1(0xde),%1(0xe9),%1(0xcb)
db %1(0x54),%1(0x7b),%1(0x94),%1(0x32),%1(0xa6),%1(0xc2),%1(0x23),%1(0x3d)
db %1(0xee),%1(0x4c),%1(0x95),%1(0x0b),%1(0x42),%1(0xfa),%1(0xc3),%1(0x4e)
db %1(0x08),%1(0x2e),%1(0xa1),%1(0x66),%1(0x28),%1(0xd9),%1(0x24),%1(0xb2)
db %1(0x76),%1(0x5b),%1(0xa2),%1(0x49),%1(0x6d),%1(0x8b),%1(0xd1),%1(0x25)
db %1(0x72),%1(0xf8),%1(0xf6),%1(0x64),%1(0x86),%1(0x68),%1(0x98),%1(0x16)
db %1(0xd4),%1(0xa4),%1(0x5c),%1(0xcc),%1(0x5d),%1(0x65),%1(0xb6),%1(0x92)
db %1(0x6c),%1(0x70),%1(0x48),%1(0x50),%1(0xfd),%1(0xed),%1(0xb9),%1(0xda)
db %1(0x5e),%1(0x15),%1(0x46),%1(0x57),%1(0xa7),%1(0x8d),%1(0x9d),%1(0x84)
db %1(0x90),%1(0xd8),%1(0xab),%1(0x00),%1(0x8c),%1(0xbc),%1(0xd3),%1(0x0a)
db %1(0xf7),%1(0xe4),%1(0x58),%1(0x05),%1(0xb8),%1(0xb3),%1(0x45),%1(0x06)
db %1(0xd0),%1(0x2c),%1(0x1e),%1(0x8f),%1(0xca),%1(0x3f),%1(0x0f),%1(0x02)
db %1(0xc1),%1(0xaf),%1(0xbd),%1(0x03),%1(0x01),%1(0x13),%1(0x8a),%1(0x6b)
db %1(0x3a),%1(0x91),%1(0x11),%1(0x41),%1(0x4f),%1(0x67),%1(0xdc),%1(0xea)
db %1(0x97),%1(0xf2),%1(0xcf),%1(0xce),%1(0xf0),%1(0xb4),%1(0xe6),%1(0x73)
db %1(0x96),%1(0xac),%1(0x74),%1(0x22),%1(0xe7),%1(0xad),%1(0x35),%1(0x85)
db %1(0xe2),%1(0xf9),%1(0x37),%1(0xe8),%1(0x1c),%1(0x75),%1(0xdf),%1(0x6e)
db %1(0x47),%1(0xf1),%1(0x1a),%1(0x71),%1(0x1d),%1(0x29),%1(0xc5),%1(0x89)
db %1(0x6f),%1(0xb7),%1(0x62),%1(0x0e),%1(0xaa),%1(0x18),%1(0xbe),%1(0x1b)
db %1(0xfc),%1(0x56),%1(0x3e),%1(0x4b),%1(0xc6),%1(0xd2),%1(0x79),%1(0x20)
db %1(0x9a),%1(0xdb),%1(0xc0),%1(0xfe),%1(0x78),%1(0xcd),%1(0x5a),%1(0xf4)
db %1(0x1f),%1(0xdd),%1(0xa8),%1(0x33),%1(0x88),%1(0x07),%1(0xc7),%1(0x31)
db %1(0xb1),%1(0x12),%1(0x10),%1(0x59),%1(0x27),%1(0x80),%1(0xec),%1(0x5f)
db %1(0x60),%1(0x51),%1(0x7f),%1(0xa9),%1(0x19),%1(0xb5),%1(0x4a),%1(0x0d)
db %1(0x2d),%1(0xe5),%1(0x7a),%1(0x9f),%1(0x93),%1(0xc9),%1(0x9c),%1(0xef)
db %1(0xa0),%1(0xe0),%1(0x3b),%1(0x4d),%1(0xae),%1(0x2a),%1(0xf5),%1(0xb0)
db %1(0xc8),%1(0xeb),%1(0xbb),%1(0x3c),%1(0x83),%1(0x53),%1(0x99),%1(0x61)
db %1(0x17),%1(0x2b),%1(0x04),%1(0x7e),%1(0xba),%1(0x77),%1(0xd6),%1(0x26)
db %1(0xe1),%1(0x69),%1(0x14),%1(0x63),%1(0x55),%1(0x21),%1(0x0c),%1(0x7d)
%endmacro
%define u8(x) f2(x), x, x, f3(x), f2(x), x, x, f3(x)
%define v8(x) fe(x), f9(x), fd(x), fb(x), fe(x), f9(x), fd(x), x
%define w8(x) x, 0, 0, 0, x, 0, 0, 0
%define tptr rbp ; table pointer
%define kptr r8 ; key schedule pointer
%define fofs 128 ; adjust offset in key schedule to keep |disp| < 128
%define fk_ref(x,y) [kptr-16*x+fofs+4*y]
%ifdef AES_REV_DKS
%define rofs 128
%define ik_ref(x,y) [kptr-16*x+rofs+4*y]
%else
%define rofs -128
%define ik_ref(x,y) [kptr+16*x+rofs+4*y]
%endif
%define tab_0(x) [tptr+8*x]
%define tab_1(x) [tptr+8*x+3]
%define tab_2(x) [tptr+8*x+2]
%define tab_3(x) [tptr+8*x+1]
%define tab_f(x) byte [tptr+8*x+1]
%define tab_i(x) byte [tptr+8*x+7]
%define t_ref(x,r) tab_ %+ x(r)
%macro ff_rnd 5 ; normal forward round
mov %1d, fk_ref(%5,0)
mov %2d, fk_ref(%5,1)
mov %3d, fk_ref(%5,2)
mov %4d, fk_ref(%5,3)
movzx esi, al
movzx edi, ah
shr eax, 16
xor %1d, t_ref(0,rsi)
xor %4d, t_ref(1,rdi)
movzx esi, al
movzx edi, ah
xor %3d, t_ref(2,rsi)
xor %2d, t_ref(3,rdi)
movzx esi, bl
movzx edi, bh
shr ebx, 16
xor %2d, t_ref(0,rsi)
xor %1d, t_ref(1,rdi)
movzx esi, bl
movzx edi, bh
xor %4d, t_ref(2,rsi)
xor %3d, t_ref(3,rdi)
movzx esi, cl
movzx edi, ch
shr ecx, 16
xor %3d, t_ref(0,rsi)
xor %2d, t_ref(1,rdi)
movzx esi, cl
movzx edi, ch
xor %1d, t_ref(2,rsi)
xor %4d, t_ref(3,rdi)
movzx esi, dl
movzx edi, dh
shr edx, 16
xor %4d, t_ref(0,rsi)
xor %3d, t_ref(1,rdi)
movzx esi, dl
movzx edi, dh
xor %2d, t_ref(2,rsi)
xor %1d, t_ref(3,rdi)
mov eax,%1d
mov ebx,%2d
mov ecx,%3d
mov edx,%4d
%endmacro
%ifdef LAST_ROUND_TABLES
%macro fl_rnd 5 ; last forward round
add tptr, 2048
mov %1d, fk_ref(%5,0)
mov %2d, fk_ref(%5,1)
mov %3d, fk_ref(%5,2)
mov %4d, fk_ref(%5,3)
movzx esi, al
movzx edi, ah
shr eax, 16
xor %1d, t_ref(0,rsi)
xor %4d, t_ref(1,rdi)
movzx esi, al
movzx edi, ah
xor %3d, t_ref(2,rsi)
xor %2d, t_ref(3,rdi)
movzx esi, bl
movzx edi, bh
shr ebx, 16
xor %2d, t_ref(0,rsi)
xor %1d, t_ref(1,rdi)
movzx esi, bl
movzx edi, bh
xor %4d, t_ref(2,rsi)
xor %3d, t_ref(3,rdi)
movzx esi, cl
movzx edi, ch
shr ecx, 16
xor %3d, t_ref(0,rsi)
xor %2d, t_ref(1,rdi)
movzx esi, cl
movzx edi, ch
xor %1d, t_ref(2,rsi)
xor %4d, t_ref(3,rdi)
movzx esi, dl
movzx edi, dh
shr edx, 16
xor %4d, t_ref(0,rsi)
xor %3d, t_ref(1,rdi)
movzx esi, dl
movzx edi, dh
xor %2d, t_ref(2,rsi)
xor %1d, t_ref(3,rdi)
%endmacro
%else
%macro fl_rnd 5 ; last forward round
mov %1d, fk_ref(%5,0)
mov %2d, fk_ref(%5,1)
mov %3d, fk_ref(%5,2)
mov %4d, fk_ref(%5,3)
movzx esi, al
movzx edi, ah
shr eax, 16
movzx esi, t_ref(f,rsi)
movzx edi, t_ref(f,rdi)
xor %1d, esi
rol edi, 8
xor %4d, edi
movzx esi, al
movzx edi, ah
movzx esi, t_ref(f,rsi)
movzx edi, t_ref(f,rdi)
rol esi, 16
rol edi, 24
xor %3d, esi
xor %2d, edi
movzx esi, bl
movzx edi, bh
shr ebx, 16
movzx esi, t_ref(f,rsi)
movzx edi, t_ref(f,rdi)
xor %2d, esi
rol edi, 8
xor %1d, edi
movzx esi, bl
movzx edi, bh
movzx esi, t_ref(f,rsi)
movzx edi, t_ref(f,rdi)
rol esi, 16
rol edi, 24
xor %4d, esi
xor %3d, edi
movzx esi, cl
movzx edi, ch
movzx esi, t_ref(f,rsi)
movzx edi, t_ref(f,rdi)
shr ecx, 16
xor %3d, esi
rol edi, 8
xor %2d, edi
movzx esi, cl
movzx edi, ch
movzx esi, t_ref(f,rsi)
movzx edi, t_ref(f,rdi)
rol esi, 16
rol edi, 24
xor %1d, esi
xor %4d, edi
movzx esi, dl
movzx edi, dh
movzx esi, t_ref(f,rsi)
movzx edi, t_ref(f,rdi)
shr edx, 16
xor %4d, esi
rol edi, 8
xor %3d, edi
movzx esi, dl
movzx edi, dh
movzx esi, t_ref(f,rsi)
movzx edi, t_ref(f,rdi)
rol esi, 16
rol edi, 24
xor %2d, esi
xor %1d, edi
%endmacro
%endif
%macro ii_rnd 5 ; normal inverse round
mov %1d, ik_ref(%5,0)
mov %2d, ik_ref(%5,1)
mov %3d, ik_ref(%5,2)
mov %4d, ik_ref(%5,3)
movzx esi, al
movzx edi, ah
shr eax, 16
xor %1d, t_ref(0,rsi)
xor %2d, t_ref(1,rdi)
movzx esi, al
movzx edi, ah
xor %3d, t_ref(2,rsi)
xor %4d, t_ref(3,rdi)
movzx esi, bl
movzx edi, bh
shr ebx, 16
xor %2d, t_ref(0,rsi)
xor %3d, t_ref(1,rdi)
movzx esi, bl
movzx edi, bh
xor %4d, t_ref(2,rsi)
xor %1d, t_ref(3,rdi)
movzx esi, cl
movzx edi, ch
shr ecx, 16
xor %3d, t_ref(0,rsi)
xor %4d, t_ref(1,rdi)
movzx esi, cl
movzx edi, ch
xor %1d, t_ref(2,rsi)
xor %2d, t_ref(3,rdi)
movzx esi, dl
movzx edi, dh
shr edx, 16
xor %4d, t_ref(0,rsi)
xor %1d, t_ref(1,rdi)
movzx esi, dl
movzx edi, dh
xor %2d, t_ref(2,rsi)
xor %3d, t_ref(3,rdi)
mov eax,%1d
mov ebx,%2d
mov ecx,%3d
mov edx,%4d
%endmacro
%ifdef LAST_ROUND_TABLES
%macro il_rnd 5 ; last inverse round
add tptr, 2048
mov %1d, ik_ref(%5,0)
mov %2d, ik_ref(%5,1)
mov %3d, ik_ref(%5,2)
mov %4d, ik_ref(%5,3)
movzx esi, al
movzx edi, ah
shr eax, 16
xor %1d, t_ref(0,rsi)
xor %2d, t_ref(1,rdi)
movzx esi, al
movzx edi, ah
xor %3d, t_ref(2,rsi)
xor %4d, t_ref(3,rdi)
movzx esi, bl
movzx edi, bh
shr ebx, 16
xor %2d, t_ref(0,rsi)
xor %3d, t_ref(1,rdi)
movzx esi, bl
movzx edi, bh
xor %4d, t_ref(2,rsi)
xor %1d, t_ref(3,rdi)
movzx esi, cl
movzx edi, ch
shr ecx, 16
xor %3d, t_ref(0,rsi)
xor %4d, t_ref(1,rdi)
movzx esi, cl
movzx edi, ch
xor %1d, t_ref(2,rsi)
xor %2d, t_ref(3,rdi)
movzx esi, dl
movzx edi, dh
shr edx, 16
xor %4d, t_ref(0,rsi)
xor %1d, t_ref(1,rdi)
movzx esi, dl
movzx edi, dh
xor %2d, t_ref(2,rsi)
xor %3d, t_ref(3,rdi)
%endmacro
%else
%macro il_rnd 5 ; last inverse round
mov %1d, ik_ref(%5,0)
mov %2d, ik_ref(%5,1)
mov %3d, ik_ref(%5,2)
mov %4d, ik_ref(%5,3)
movzx esi, al
movzx edi, ah
movzx esi, t_ref(i,rsi)
movzx edi, t_ref(i,rdi)
shr eax, 16
xor %1d, esi
rol edi, 8
xor %2d, edi
movzx esi, al
movzx edi, ah
movzx esi, t_ref(i,rsi)
movzx edi, t_ref(i,rdi)
rol esi, 16
rol edi, 24
xor %3d, esi
xor %4d, edi
movzx esi, bl
movzx edi, bh
movzx esi, t_ref(i,rsi)
movzx edi, t_ref(i,rdi)
shr ebx, 16
xor %2d, esi
rol edi, 8
xor %3d, edi
movzx esi, bl
movzx edi, bh
movzx esi, t_ref(i,rsi)
movzx edi, t_ref(i,rdi)
rol esi, 16
rol edi, 24
xor %4d, esi
xor %1d, edi
movzx esi, cl
movzx edi, ch
movzx esi, t_ref(i,rsi)
movzx edi, t_ref(i,rdi)
shr ecx, 16
xor %3d, esi
rol edi, 8
xor %4d, edi
movzx esi, cl
movzx edi, ch
movzx esi, t_ref(i,rsi)
movzx edi, t_ref(i,rdi)
rol esi, 16
rol edi, 24
xor %1d, esi
xor %2d, edi
movzx esi, dl
movzx edi, dh
movzx esi, t_ref(i,rsi)
movzx edi, t_ref(i,rdi)
shr edx, 16
xor %4d, esi
rol edi, 8
xor %1d, edi
movzx esi, dl
movzx edi, dh
movzx esi, t_ref(i,rsi)
movzx edi, t_ref(i,rdi)
rol esi, 16
rol edi, 24
xor %2d, esi
xor %3d, edi
%endmacro
%endif
%ifdef ENCRYPTION
global aes_ni(encrypt)
%ifdef DLL_EXPORT
export aes_ni(encrypt)
%endif
section .data align=64
align 64
enc_tab:
enc_vals u8
%ifdef LAST_ROUND_TABLES
enc_vals w8
%endif
section .text align=16
align 16
%ifdef _SEH_
proc_frame aes_ni(encrypt)
alloc_stack 7*8 ; 7 to align stack to 16 bytes
save_reg rsi,4*8
save_reg rdi,5*8
save_reg rbx,1*8
save_reg rbp,2*8
save_reg r12,3*8
end_prologue
mov rdi, rcx ; input pointer
mov [rsp+0*8], rdx ; output pointer
%else
aes_ni(encrypt):
%ifdef __GNUC__
sub rsp, 4*8 ; gnu/linux binary interface
mov [rsp+0*8], rsi ; output pointer
mov r8, rdx ; context
%else
sub rsp, 6*8 ; windows binary interface
mov [rsp+4*8], rsi
mov [rsp+5*8], rdi
mov rdi, rcx ; input pointer
mov [rsp+0*8], rdx ; output pointer
%endif
mov [rsp+1*8], rbx ; input pointer in rdi
mov [rsp+2*8], rbp ; output pointer in [rsp]
mov [rsp+3*8], r12 ; context in r8
%endif
movzx esi, byte [kptr+4*KS_LENGTH]
lea tptr, [rel enc_tab]
sub kptr, fofs
mov eax, [rdi+0*4]
mov ebx, [rdi+1*4]
mov ecx, [rdi+2*4]
mov edx, [rdi+3*4]
xor eax, [kptr+fofs]
xor ebx, [kptr+fofs+4]
xor ecx, [kptr+fofs+8]
xor edx, [kptr+fofs+12]
lea kptr,[kptr+rsi]
cmp esi, 10*16
je .3
cmp esi, 12*16
je .2
cmp esi, 14*16
je .1
mov rax, -1
jmp .4
.1: ff_rnd r9, r10, r11, r12, 13
ff_rnd r9, r10, r11, r12, 12
.2: ff_rnd r9, r10, r11, r12, 11
ff_rnd r9, r10, r11, r12, 10
.3: ff_rnd r9, r10, r11, r12, 9
ff_rnd r9, r10, r11, r12, 8
ff_rnd r9, r10, r11, r12, 7
ff_rnd r9, r10, r11, r12, 6
ff_rnd r9, r10, r11, r12, 5
ff_rnd r9, r10, r11, r12, 4
ff_rnd r9, r10, r11, r12, 3
ff_rnd r9, r10, r11, r12, 2
ff_rnd r9, r10, r11, r12, 1
fl_rnd r9, r10, r11, r12, 0
mov rbx, [rsp]
mov [rbx], r9d
mov [rbx+4], r10d
mov [rbx+8], r11d
mov [rbx+12], r12d
xor rax, rax
.4:
mov rbx, [rsp+1*8]
mov rbp, [rsp+2*8]
mov r12, [rsp+3*8]
%ifdef __GNUC__
add rsp, 4*8
ret
%else
mov rsi, [rsp+4*8]
mov rdi, [rsp+5*8]
%ifdef _SEH_
add rsp, 7*8
ret
endproc_frame
%else
add rsp, 6*8
ret
%endif
%endif
%endif
%ifdef DECRYPTION
global aes_ni(decrypt)
%ifdef DLL_EXPORT
export aes_ni(decrypt)
%endif
section .data
align 64
dec_tab:
dec_vals v8
%ifdef LAST_ROUND_TABLES
dec_vals w8
%endif
section .text
align 16
%ifdef _SEH_
proc_frame aes_ni(decrypt)
alloc_stack 7*8 ; 7 to align stack to 16 bytes
save_reg rsi,4*8
save_reg rdi,5*8
save_reg rbx,1*8
save_reg rbp,2*8
save_reg r12,3*8
end_prologue
mov rdi, rcx ; input pointer
mov [rsp+0*8], rdx ; output pointer
%else
aes_ni(decrypt):
%ifdef __GNUC__
sub rsp, 4*8 ; gnu/linux binary interface
mov [rsp+0*8], rsi ; output pointer
mov r8, rdx ; context
%else
sub rsp, 6*8 ; windows binary interface
mov [rsp+4*8], rsi
mov [rsp+5*8], rdi
mov rdi, rcx ; input pointer
mov [rsp+0*8], rdx ; output pointer
%endif
mov [rsp+1*8], rbx ; input pointer in rdi
mov [rsp+2*8], rbp ; output pointer in [rsp]
mov [rsp+3*8], r12 ; context in r8
%endif
movzx esi, byte[kptr+4*KS_LENGTH]
lea tptr, [rel dec_tab]
sub kptr, rofs
mov eax, [rdi+0*4]
mov ebx, [rdi+1*4]
mov ecx, [rdi+2*4]
mov edx, [rdi+3*4]
%ifdef AES_REV_DKS
mov rdi, kptr
lea kptr,[kptr+rsi]
%else
lea rdi,[kptr+rsi]
%endif
xor eax, [rdi+rofs]
xor ebx, [rdi+rofs+4]
xor ecx, [rdi+rofs+8]
xor edx, [rdi+rofs+12]
cmp esi, 10*16
je .3
cmp esi, 12*16
je .2
cmp esi, 14*16
je .1
mov rax, -1
jmp .4
.1: ii_rnd r9, r10, r11, r12, 13
ii_rnd r9, r10, r11, r12, 12
.2: ii_rnd r9, r10, r11, r12, 11
ii_rnd r9, r10, r11, r12, 10
.3: ii_rnd r9, r10, r11, r12, 9
ii_rnd r9, r10, r11, r12, 8
ii_rnd r9, r10, r11, r12, 7
ii_rnd r9, r10, r11, r12, 6
ii_rnd r9, r10, r11, r12, 5
ii_rnd r9, r10, r11, r12, 4
ii_rnd r9, r10, r11, r12, 3
ii_rnd r9, r10, r11, r12, 2
ii_rnd r9, r10, r11, r12, 1
il_rnd r9, r10, r11, r12, 0
mov rbx, [rsp]
mov [rbx], r9d
mov [rbx+4], r10d
mov [rbx+8], r11d
mov [rbx+12], r12d
xor rax, rax
.4: mov rbx, [rsp+1*8]
mov rbp, [rsp+2*8]
mov r12, [rsp+3*8]
%ifdef __GNUC__
add rsp, 4*8
ret
%else
mov rsi, [rsp+4*8]
mov rdi, [rsp+5*8]
%ifdef _SEH_
add rsp, 7*8
ret
endproc_frame
%else
add rsp, 6*8
ret
%endif
%endif
%endif
end