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author | Egor Tensin <Egor.Tensin@gmail.com> | 2015-06-10 05:13:30 +0300 |
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committer | Egor Tensin <Egor.Tensin@gmail.com> | 2015-06-10 05:13:30 +0300 |
commit | 1429346822e56485acc4f4af4d1458e9df4115b9 (patch) | |
tree | 5985cca7b2b9877416ec6b227055169014292ae7 /src/aes192.asm | |
parent | rename source files (diff) | |
download | aes-tools-1429346822e56485acc4f4af4d1458e9df4115b9.tar.gz aes-tools-1429346822e56485acc4f4af4d1458e9df4115b9.zip |
src/aes*.asm -> src/asm/, src/aes*.c -> src/c/
Diffstat (limited to 'src/aes192.asm')
-rw-r--r-- | src/aes192.asm | 248 |
1 files changed, 0 insertions, 248 deletions
diff --git a/src/aes192.asm b/src/aes192.asm deleted file mode 100644 index 5cc8ded..0000000 --- a/src/aes192.asm +++ /dev/null @@ -1,248 +0,0 @@ -; Copyright 2015 Egor Tensin <Egor.Tensin@gmail.com> -; This file is licensed under the terms of the MIT License. -; See LICENSE.txt for details. - -.586 -.xmm -.model flat - -.code - -@raw_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 -@raw_aes192_encrypt_block@20 endp - -@raw_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 -@raw_aes192_decrypt_block@20 endp - -@raw_aes192_expand_key_schedule@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 xmm7, xmm1, 1 ; xmm7[63:32] = RotWord(SubWord(w[5]))^Rcon, - call aes192_keygen_assist - movdqu [ecx + 18h], xmm0 - movq qword ptr [ecx + 28h], xmm1 - aeskeygenassist xmm7, xmm1, 2 ; xmm7[63:32] = RotWord(SubWord(w[11]))^Rcon - call aes192_keygen_assist - movdqa [ecx + 30h], xmm0 - movq qword ptr [ecx + 40h], xmm1 - aeskeygenassist xmm7, xmm1, 4 ; xmm7[63:32] = RotWord(SubWord(w[17]))^Rcon - call aes192_keygen_assist - movdqu [ecx + 48h], xmm0 - movq qword ptr [ecx + 58h], xmm1 - aeskeygenassist xmm7, xmm1, 8 ; xmm7[63:32] = RotWord(SubWord(w[23]))^Rcon - call aes192_keygen_assist - movdqa [ecx + 60h], xmm0 - movq qword ptr [ecx + 70h], xmm1 - aeskeygenassist xmm7, xmm1, 10h ; xmm7[63:32] = RotWord(SubWord(w[29]))^Rcon - call aes192_keygen_assist - movdqu [ecx + 78h], xmm0 - movq qword ptr [ecx + 88h], xmm1 - aeskeygenassist xmm7, xmm1, 20h ; xmm7[63:32] = RotWord(SubWord(w[35]))^Rcon - call aes192_keygen_assist - movdqa [ecx + 90h], xmm0 - movq qword ptr [ecx + 0a0h], xmm1 - aeskeygenassist xmm7, xmm1, 40h ; xmm7[63:32] = RotWord(SubWord(w[41]))^Rcon - call aes192_keygen_assist - movdqu [ecx + 0a8h], xmm0 - movq qword ptr [ecx + 0b8h], xmm1 - aeskeygenassist xmm7, xmm1, 80h ; xmm7[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], - ; * xmm7[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 xmm6 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 xmm6, xmm0 ; xmm6 = xmm0 - pslldq xmm6, 4 ; xmm6 <<= 32 - pxor xmm0, xmm6 ; xmm0 ^= xmm6 - pslldq xmm6, 4 ; xmm6 <<= 32 - pxor xmm0, xmm6 ; xmm0 ^= xmm6 - pslldq xmm6, 4 ; xmm6 <<= 32 - pxor xmm0, xmm6 ; xmm0 ^= xmm6 - ; 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 xmm6, xmm7, 55h ; xmm6[127:96] = xmm6[95:64] = xmm6[63:32] = xmm6[31:0] = xmm7[63:32] - pxor xmm0, xmm6 ; xmm0 ^= xmm6 - ; 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 xmm6, xmm1, 0F3h ; xmm6 = xmm1[31:0] << 32 - pxor xmm1, xmm6 ; xmm1 ^= xmm7 - ; 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 xmm6, xmm0, 0FFh ; xmm6[127:96] = xmm6[95:64] = xmm6[63:32] = xmm6[31:0] = xmm0[127:96] - psrldq xmm6, 8 ; xmm6 >>= 64 - pxor xmm1, xmm6 ; xmm1 ^= xmm6 - ; 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 -@raw_aes192_expand_key_schedule@36 endp - -@raw_aes192_invert_key_schedule@8 proc - movdqa xmm7, [ecx] - movdqa xmm6, [ecx + 0C0h] - movdqa [edx], xmm6 - movdqa [edx + 0C0h], xmm7 - - aesimc xmm7, [ecx + 10h] - aesimc xmm6, [ecx + 0B0h] - movdqa [edx + 10h], xmm6 - movdqa [edx + 0B0h], xmm7 - - aesimc xmm7, [ecx + 20h] - aesimc xmm6, [ecx + 0A0h] - movdqa [edx + 20h], xmm6 - movdqa [edx + 0A0h], xmm7 - - aesimc xmm7, [ecx + 30h] - aesimc xmm6, [ecx + 90h] - movdqa [edx + 30h], xmm6 - movdqa [edx + 90h], xmm7 - - aesimc xmm7, [ecx + 40h] - aesimc xmm6, [ecx + 80h] - movdqa [edx + 40h], xmm6 - movdqa [edx + 80h], xmm7 - - aesimc xmm7, [ecx + 50h] - aesimc xmm6, [ecx + 70h] - movdqa [edx + 50h], xmm6 - movdqa [edx + 70h], xmm7 - - aesimc xmm7, [ecx + 60h] - movdqa [edx + 60h], xmm7 - - ret -@raw_aes192_invert_key_schedule@8 endp - -end |