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diff --git a/aes/src/asm/aes192.asm b/aes/src/asm/aes192.asm
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+; Copyright (c) 2015 Egor Tensin <Egor.Tensin@gmail.com>
+; This file is part of the "AES tools" project.
+; For details, see https://github.com/egor-tensin/aes-tools.
+; Distributed under the MIT License.
+
+.586
+.xmm
+.model flat
+
+.code
+
+@aes_AES192_encrypt_block_@20 proc
+ pxor xmm0, [ecx]
+ aesenc xmm0, [ecx + 10h]
+ aesenc xmm0, [ecx + 20h]
+ aesenc xmm0, [ecx + 30h]
+ aesenc xmm0, [ecx + 40h]
+ aesenc xmm0, [ecx + 50h]
+ aesenc xmm0, [ecx + 60h]
+ aesenc xmm0, [ecx + 70h]
+ aesenc xmm0, [ecx + 80h]
+ aesenc xmm0, [ecx + 90h]
+ aesenc xmm0, [ecx + 0A0h]
+ aesenc xmm0, [ecx + 0B0h]
+ aesenclast xmm0, [ecx + 0C0h]
+ ret
+@aes_AES192_encrypt_block_@20 endp
+
+@aes_AES192_decrypt_block_@20 proc
+ pxor xmm0, [ecx]
+ aesdec xmm0, [ecx + 10h]
+ aesdec xmm0, [ecx + 20h]
+ aesdec xmm0, [ecx + 30h]
+ aesdec xmm0, [ecx + 40h]
+ aesdec xmm0, [ecx + 50h]
+ aesdec xmm0, [ecx + 60h]
+ aesdec xmm0, [ecx + 70h]
+ aesdec xmm0, [ecx + 80h]
+ aesdec xmm0, [ecx + 90h]
+ aesdec xmm0, [ecx + 0A0h]
+ aesdec xmm0, [ecx + 0B0h]
+ aesdeclast xmm0, [ecx + 0C0h]
+ ret
+@aes_AES192_decrypt_block_@20 endp
+
+@aes_AES192_expand_key_@36 proc
+ ; A "word" (in terms of the FIPS 187 standard) is a 32-bit block.
+ ; Words are denoted by `w[N]`.
+ ;
+ ; A key schedule is composed of 12 "regular" keys and a dumb key for
+ ; the "whitening" step.
+ ;
+ ; A key schedule is thus composed of 52 "words".
+ ; The FIPS standard includes an algorithm to calculate these words via
+ ; a simple loop:
+ ;
+ ; i = 6
+ ; while i < 52:
+ ; temp = w[i - 1]
+ ; if i % 6 == 0:
+ ; temp = SubWord(RotWord(temp))^Rcon
+ ; w[i] = w[i - 6]^temp
+ ; i = i + 1
+ ;
+ ; The loop above may be unrolled like this:
+ ;
+ ; w[6] = SubWord(RotWord(w[5]))^Rcon^w[0]
+ ; w[7] = w[6]^w[1]
+ ; = SubWord(RotWord(w[5]))^Rcon^w[0]^w[1]
+ ; w[8] = w[7]^w[2]
+ ; = SubWord(RotWord(w[5]))^Rcon^w[0]^w[1]^w[2]
+ ; w[9] = w[8]^w[3]
+ ; = SubWord(RotWord(w[5]))^Rcon^w[0]^w[1]^w[2]^w[3]
+ ; w[10] = w[9]^w[4]
+ ; = SubWord(RotWord(w[5]))^Rcon^w[0]^w[1]^w[2]^w[3]^w[4]
+ ; w[11] = w[10]^w[5]
+ ; = SubWord(RotWord(w[5]))^Rcon^w[0]^w[1]^w[2]^w[3]^w[4]^w[5]
+ ; w[12] = SubWord(RotWord(w[11]))^Rcon^w[6]
+ ; w[13] = w[12]^w[7]
+ ; = SubWord(RotWord(w[11]))^Rcon^w[6]^w[7]
+ ; w[14] = w[13]^w[8]
+ ; = SubWord(RotWord(w[11]))^Rcon^w[6]^w[7]^w[8]
+ ; w[15] = w[14]^w[9]
+ ; = SubWord(RotWord(w[11]))^Rcon^w[6]^w[7]^w[8]^w[9]
+ ; w[16] = w[15]^w[10]
+ ; = SubWord(RotWord(w[11]))^Rcon^w[6]^w[7]^w[8]^w[9]^w[10]
+ ; w[17] = w[16]^w[11]
+ ; = SubWort(RotWord(w[11]))^Rcon^w[6]^w[7]^w[8]^w[9]^w[10]^w[11]
+ ;
+ ; ... and so on.
+ ;
+ ; The Intel AES-NI instruction set facilitates calculating SubWord
+ ; and RotWord using `aeskeygenassist`, which is used in this routine.
+ ;
+ ; Preconditions:
+ ; * xmm1[63:32] == w[5],
+ ; * xmm1[31:0] == w[4],
+ ; * xmm0[127:96] == w[3],
+ ; * xmm0[95:64] == w[2],
+ ; * xmm0[63:32] == w[1],
+ ; * xmm0[31:0] == w[0].
+
+ movdqa [ecx], xmm0 ; sets w[0], w[1], w[2], w[3]
+ movq qword ptr [ecx + 10h], xmm1 ; sets w[4], w[5]
+
+ aeskeygenassist xmm5, xmm1, 1 ; xmm5[63:32] = RotWord(SubWord(w[5]))^Rcon,
+ call aes192_keygen_assist
+ movdqu [ecx + 18h], xmm0
+ movq qword ptr [ecx + 28h], xmm1
+ aeskeygenassist xmm5, xmm1, 2 ; xmm5[63:32] = RotWord(SubWord(w[11]))^Rcon
+ call aes192_keygen_assist
+ movdqa [ecx + 30h], xmm0
+ movq qword ptr [ecx + 40h], xmm1
+ aeskeygenassist xmm5, xmm1, 4 ; xmm5[63:32] = RotWord(SubWord(w[17]))^Rcon
+ call aes192_keygen_assist
+ movdqu [ecx + 48h], xmm0
+ movq qword ptr [ecx + 58h], xmm1
+ aeskeygenassist xmm5, xmm1, 8 ; xmm5[63:32] = RotWord(SubWord(w[23]))^Rcon
+ call aes192_keygen_assist
+ movdqa [ecx + 60h], xmm0
+ movq qword ptr [ecx + 70h], xmm1
+ aeskeygenassist xmm5, xmm1, 10h ; xmm5[63:32] = RotWord(SubWord(w[29]))^Rcon
+ call aes192_keygen_assist
+ movdqu [ecx + 78h], xmm0
+ movq qword ptr [ecx + 88h], xmm1
+ aeskeygenassist xmm5, xmm1, 20h ; xmm5[63:32] = RotWord(SubWord(w[35]))^Rcon
+ call aes192_keygen_assist
+ movdqa [ecx + 90h], xmm0
+ movq qword ptr [ecx + 0a0h], xmm1
+ aeskeygenassist xmm5, xmm1, 40h ; xmm5[63:32] = RotWord(SubWord(w[41]))^Rcon
+ call aes192_keygen_assist
+ movdqu [ecx + 0a8h], xmm0
+ movq qword ptr [ecx + 0b8h], xmm1
+ aeskeygenassist xmm5, xmm1, 80h ; xmm5[63:32] = RotWord(SubWord(w[49]))^Rcon
+ call aes192_keygen_assist
+ movdqa [ecx + 0c0h], xmm0
+
+ ret
+
+aes192_keygen_assist:
+ ; Preconditions:
+ ; * xmm1[127:96] == 0,
+ ; * xmm1[95:64] == 0,
+ ; * xmm1[63:32] == w[i+5],
+ ; * xmm1[31:0] == w[i+4],
+ ; * xmm0[127:96] == w[i+3],
+ ; * xmm0[95:64] == w[i+2],
+ ; * xmm0[63:32] == w[i+1],
+ ; * xmm0[31:0] == w[i],
+ ; * xmm5[63:32] == RotWord(SubWord(w[i+5]))^Rcon.
+ ;
+ ; Postconditions:
+ ; * xmm1[127:96] == 0,
+ ; * xmm1[95:64] == 0,
+ ; * xmm1[63:32] == w[i+11] == RotWord(SubWord(w[i+5]))^Rcon^w[i+5]^w[i+4]^w[i+3]^w[i+2]^w[i+1]^w[i],
+ ; * xmm1[31:0] == w[i+10] == RotWord(SubWord(w[i+5]))^Rcon^w[i+4]^w[i+3]^w[i+2]^w[i+1]^w[i],
+ ; * xmm0[127:96] == w[i+9] == RotWord(SubWord(w[i+5]))^Rcon^w[i+3]^w[i+2]^w[i+1]^w[i],
+ ; * xmm0[95:64] == w[i+8] == RotWord(SubWord(w[i+5]))^Rcon^w[i+2]^w[i+1]^w[i],
+ ; * xmm0[63:32] == w[i+7] == RotWord(SubWord(w[i+5]))^Rcon^w[i+1]^w[i],
+ ; * xmm0[31:0] == w[i+6] == RotWord(SubWord(w[i+5]))^Rcon^w[i],
+ ; * the value in xmm4 is also modified.
+
+ ; Calculate
+ ; w[i+3]^w[i+2]^w[i+1]^w[i],
+ ; w[i+2]^w[i+1]^w[i],
+ ; w[i+1]^w[i] and
+ ; w[i].
+ movdqa xmm4, xmm0 ; xmm4 = xmm0
+ pslldq xmm4, 4 ; xmm4 <<= 32
+ pxor xmm0, xmm4 ; xmm0 ^= xmm4
+ pslldq xmm4, 4 ; xmm4 <<= 32
+ pxor xmm0, xmm4 ; xmm0 ^= xmm4
+ pslldq xmm4, 4 ; xmm4 <<= 32
+ pxor xmm0, xmm4 ; xmm0 ^= xmm4
+ ; xmm0[127:96] == w[i+3]^w[i+2]^w[i+1]^w[i]
+ ; xmm0[95:64] == w[i+2]^w[i+1]^w[i]
+ ; xmm0[63:32] == w[i+1]^w[i]
+ ; xmm0[31:0] == w[i]
+
+ ; Calculate
+ ; w[i+9] == RotWord(SubWord(w[i+5]))^Rcon^w[i+3]^w[i+2]^w[i+1]^w[i],
+ ; w[i+8] == RotWord(SubWord(w[i+5]))^Rcon^w[i+2]^w[i+1]^w[i],
+ ; w[i+7] == RotWord(SubWord(w[i+5]))^Rcon^w[i+1]^w[i] and
+ ; w[i+6] == RotWord(SubWord(w[i+5]))^Rcon^w[i].
+ pshufd xmm4, xmm5, 55h ; xmm4[127:96] = xmm4[95:64] = xmm4[63:32] = xmm4[31:0] = xmm5[63:32]
+ pxor xmm0, xmm4 ; xmm0 ^= xmm4
+ ; xmm0[127:96] == w[i+9] == RotWord(SubWord(w[i+5]))^Rcon^w[i+3]^w[i+2]^w[i+1]^w[i]
+ ; xmm0[95:64] == w[i+8] == RotWord(SubWord(w[i+5]))^Rcon^w[i+2]^w[i+1]^w[i]
+ ; xmm0[63:32] == w[i+7] == RotWord(SubWord(w[i+5]))^Rcon^w[i+1]^w[i]
+ ; xmm0[31:0] == w[i+6] == RotWord(SubWord(w[i+5]))^Rcon^w[i]
+
+ ; Calculate
+ ; w[i+5]^w[i+4],
+ ; w[i+4].
+ pshufd xmm4, xmm1, 0F3h ; xmm4 = xmm1[31:0] << 32
+ pxor xmm1, xmm4 ; xmm1 ^= xmm5
+ ; xmm1[63:32] == w[i+5]^w[i+4]
+ ; xmm1[31:0] == w[i+4]
+
+ ; Calculate
+ ; w[i+10] == RotWord(SubWord(w[i+5]))^Rcon^w[i+5]^w[i+4]^w[i+3]^w[i+2]^w[i+1]^w[i],
+ ; w[i+11] == RotWord(SubWord(w[i+5]))^Rcon^w[i+4]^w[i+3]^w[i+2]^w[i+1]^w[i].
+ pshufd xmm4, xmm0, 0FFh ; xmm4[127:96] = xmm4[95:64] = xmm4[63:32] = xmm4[31:0] = xmm0[127:96]
+ psrldq xmm4, 8 ; xmm4 >>= 64
+ pxor xmm1, xmm4 ; xmm1 ^= xmm4
+ ; xmm1[63:32] == w[i+11] == RotWord(SubWord(w[i+5]))^Rcon^w[i+5]^w[i+4]^w[i+3]^w[i+2]^w[i+1]^w[i]
+ ; xmm1[31:0] == w[i+10] == RotWord(SubWord(w[i+5]))^Rcon^w[i+4]^w[i+3]^w[i+2]^w[i+1]^w[i]
+
+ ret
+@aes_AES192_expand_key_@36 endp
+
+@aes_AES192_derive_decryption_keys_@8 proc
+ movdqa xmm5, [ecx]
+ movdqa xmm4, [ecx + 0C0h]
+ movdqa [edx], xmm4
+ movdqa [edx + 0C0h], xmm5
+
+ aesimc xmm5, [ecx + 10h]
+ aesimc xmm4, [ecx + 0B0h]
+ movdqa [edx + 10h], xmm4
+ movdqa [edx + 0B0h], xmm5
+
+ aesimc xmm5, [ecx + 20h]
+ aesimc xmm4, [ecx + 0A0h]
+ movdqa [edx + 20h], xmm4
+ movdqa [edx + 0A0h], xmm5
+
+ aesimc xmm5, [ecx + 30h]
+ aesimc xmm4, [ecx + 90h]
+ movdqa [edx + 30h], xmm4
+ movdqa [edx + 90h], xmm5
+
+ aesimc xmm5, [ecx + 40h]
+ aesimc xmm4, [ecx + 80h]
+ movdqa [edx + 40h], xmm4
+ movdqa [edx + 80h], xmm5
+
+ aesimc xmm5, [ecx + 50h]
+ aesimc xmm4, [ecx + 70h]
+ movdqa [edx + 50h], xmm4
+ movdqa [edx + 70h], xmm5
+
+ aesimc xmm5, [ecx + 60h]
+ movdqa [edx + 60h], xmm5
+
+ ret
+@aes_AES192_derive_decryption_keys_@8 endp
+
+end
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-09 17:00:33 +0000