From 3cb7fdea950dd2d0377f0d9ad8a88fcb7c48b842 Mon Sep 17 00:00:00 2001 From: Jedidiah Barber Date: Wed, 14 Jul 2021 11:27:03 +1200 Subject: Initial mirror commit --- Crypto/Aes_x64.asm | 907 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 907 insertions(+) create mode 100644 Crypto/Aes_x64.asm (limited to 'Crypto/Aes_x64.asm') diff --git a/Crypto/Aes_x64.asm b/Crypto/Aes_x64.asm new file mode 100644 index 0000000..b29fdca --- /dev/null +++ b/Crypto/Aes_x64.asm @@ -0,0 +1,907 @@ + +; --------------------------------------------------------------------------- +; 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(const unsigned char key[], +; const aes_encrypt_ctx cx[1]); +; +; AES_RETURN aes_decrypt_key(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 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 -- cgit