VeraCrypt
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+
+; ---------------------------------------------------------------------------
+; Copyright (c) 1998-2007, Brian Gladman, Worcester, UK. All rights reserved.
+;
+; LICENSE TERMS
+;
+; The free distribution and use of this software is allowed (with or without
+; changes) provided that:
+;
+; 1. source code distributions include the above copyright notice, this
+; list of conditions and the following disclaimer;
+;
+; 2. binary distributions include the above copyright notice, this list
+; of conditions and the following disclaimer in their documentation;
+;
+; 3. the name of the copyright holder is not used to endorse products
+; built using this software without specific written permission.
+;
+; DISCLAIMER
+;
+; This software is provided 'as is' with no explicit or implied warranties
+; in respect of its properties, including, but not limited to, correctness
+; and/or fitness for purpose.
+; ---------------------------------------------------------------------------
+; Issue 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.
+
+;
+; Adapted for TrueCrypt:
+; - Compatibility with NASM
+;
+
+; 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, 102 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 file aes.h
+
+; %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
+%define AES_REV_DKS ; define if key decryption schedule is reversed
+%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 provided here
+; is used.
+;
+; The DLL interface must use the _stdcall convention in which the number
+; of bytes of parameter space is added after an @ to the sutine'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_encrypt
+%ifdef DLL_EXPORT
+ export aes_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_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_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_decrypt
+%ifdef DLL_EXPORT
+ export aes_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_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_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