.text

.type   _vpaes_consts,%object
.align  7       // totally strategic alignment
_vpaes_consts:
.Lk_mc_forward: //      mc_forward
.quad   0x0407060500030201, 0x0C0F0E0D080B0A09
.quad   0x080B0A0904070605, 0x000302010C0F0E0D
.quad   0x0C0F0E0D080B0A09, 0x0407060500030201
.quad   0x000302010C0F0E0D, 0x080B0A0904070605
.Lk_mc_backward:        //      mc_backward
.quad   0x0605040702010003, 0x0E0D0C0F0A09080B
.quad   0x020100030E0D0C0F, 0x0A09080B06050407
.quad   0x0E0D0C0F0A09080B, 0x0605040702010003
.quad   0x0A09080B06050407, 0x020100030E0D0C0F
.Lk_sr: //      sr
.quad   0x0706050403020100, 0x0F0E0D0C0B0A0908
.quad   0x030E09040F0A0500, 0x0B06010C07020D08
.quad   0x0F060D040B020900, 0x070E050C030A0108
.quad   0x0B0E0104070A0D00, 0x0306090C0F020508

//
// "Hot" constants
//
.Lk_inv:        //      inv, inva
.quad   0x0E05060F0D080180, 0x040703090A0B0C02
.quad   0x01040A060F0B0780, 0x030D0E0C02050809
.Lk_ipt:        //      input transform (lo, hi)
.quad   0xC2B2E8985A2A7000, 0xCABAE09052227808
.quad   0x4C01307D317C4D00, 0xCD80B1FCB0FDCC81
.Lk_sbo:        //      sbou, sbot
.quad   0xD0D26D176FBDC700, 0x15AABF7AC502A878
.quad   0xCFE474A55FBB6A00, 0x8E1E90D1412B35FA
.Lk_sb1:        //      sb1u, sb1t
.quad   0x3618D415FAE22300, 0x3BF7CCC10D2ED9EF
.quad   0xB19BE18FCB503E00, 0xA5DF7A6E142AF544
.Lk_sb2:        //      sb2u, sb2t
.quad   0x69EB88400AE12900, 0xC2A163C8AB82234A
.quad   0xE27A93C60B712400, 0x5EB7E955BC982FCD

//
//  Decryption stuff
//
.Lk_dipt:       //      decryption input transform
.quad   0x0F505B040B545F00, 0x154A411E114E451A
.quad   0x86E383E660056500, 0x12771772F491F194
.Lk_dsbo:       //      decryption sbox final output
.quad   0x1387EA537EF94000, 0xC7AA6DB9D4943E2D
.quad   0x12D7560F93441D00, 0xCA4B8159D8C58E9C
.Lk_dsb9:       //      decryption sbox output *9*u, *9*t
.quad   0x851C03539A86D600, 0xCAD51F504F994CC9
.quad   0xC03B1789ECD74900, 0x725E2C9EB2FBA565
.Lk_dsbd:       //      decryption sbox output *D*u, *D*t
.quad   0x7D57CCDFE6B1A200, 0xF56E9B13882A4439
.quad   0x3CE2FAF724C6CB00, 0x2931180D15DEEFD3
.Lk_dsbb:       //      decryption sbox output *B*u, *B*t
.quad   0xD022649296B44200, 0x602646F6B0F2D404
.quad   0xC19498A6CD596700, 0xF3FF0C3E3255AA6B
.Lk_dsbe:       //      decryption sbox output *E*u, *E*t
.quad   0x46F2929626D4D000, 0x2242600464B4F6B0
.quad   0x0C55A6CDFFAAC100, 0x9467F36B98593E32

//
//  Key schedule constants
//
.Lk_dksd:       //      decryption key schedule: invskew x*D
.quad   0xFEB91A5DA3E44700, 0x0740E3A45A1DBEF9
.quad   0x41C277F4B5368300, 0x5FDC69EAAB289D1E
.Lk_dksb:       //      decryption key schedule: invskew x*B
.quad   0x9A4FCA1F8550D500, 0x03D653861CC94C99
.quad   0x115BEDA7B6FC4A00, 0xD993256F7E3482C8
.Lk_dkse:       //      decryption key schedule: invskew x*E + 0x63
.quad   0xD5031CCA1FC9D600, 0x53859A4C994F5086
.quad   0xA23196054FDC7BE8, 0xCD5EF96A20B31487
.Lk_dks9:       //      decryption key schedule: invskew x*9
.quad   0xB6116FC87ED9A700, 0x4AED933482255BFC
.quad   0x4576516227143300, 0x8BB89FACE9DAFDCE

.Lk_rcon:       //      rcon
.quad   0x1F8391B9AF9DEEB6, 0x702A98084D7C7D81

.Lk_opt:        //      output transform
.quad   0xFF9F4929D6B66000, 0xF7974121DEBE6808
.quad   0x01EDBD5150BCEC00, 0xE10D5DB1B05C0CE0
.Lk_deskew:     //      deskew tables: inverts the sbox's "skew"
.quad   0x07E4A34047A4E300, 0x1DFEB95A5DBEF91A
.quad   0x5F36B5DC83EA6900, 0x2841C2ABF49D1E77

.byte   86,101,99,116,111,114,32,80,101,114,109,117,116,97,116,105,111,110,32,65,69,83,32,102,111,114,32,65,82,77,118,56,44,32,77,105,107,101,32,72,97,109,98,117,114,103,32,40,83,116,97,110,102,111,114,100,32,85,110,105,118,101,114,115,105,116,121,41,0
.align  2
.size   _vpaes_consts,.-_vpaes_consts
.align  6
//
//  _aes_preheat
//
//  Fills register %r10 -> .aes_consts (so you can -fPIC)
//  and %xmm9-%xmm15 as specified below.
//
.type   _vpaes_encrypt_preheat,%function
.align  4
_vpaes_encrypt_preheat:
        adr     x10, .Lk_inv
        movi    v17.16b, #0x0f
        ld1     {v18.2d,v19.2d}, [x10],#32      // .Lk_inv
        ld1     {v20.2d,v21.2d,v22.2d,v23.2d}, [x10],#64        // .Lk_ipt, .Lk_sbo
        ld1     {v24.2d,v25.2d,v26.2d,v27.2d}, [x10]            // .Lk_sb1, .Lk_sb2
        ret
.size   _vpaes_encrypt_preheat,.-_vpaes_encrypt_preheat

//
//  _aes_encrypt_core
//
//  AES-encrypt %xmm0.
//
//  Inputs:
//     %xmm0 = input
//     %xmm9-%xmm15 as in _vpaes_preheat
//    (%rdx) = scheduled keys
//
//  Output in %xmm0
//  Clobbers  %xmm1-%xmm5, %r9, %r10, %r11, %rax
//  Preserves %xmm6 - %xmm8 so you get some local vectors
//
//
.type   _vpaes_encrypt_core,%function
.align  4
_vpaes_encrypt_core:
        mov     x9, x2
        ldr     w8, [x2,#240]                   // pull rounds
        adr     x11, .Lk_mc_forward+16
                                                // vmovdqa      .Lk_ipt(%rip),  %xmm2   # iptlo
        ld1     {v16.2d}, [x9], #16             // vmovdqu      (%r9),  %xmm5           # round0 key
        and     v1.16b, v7.16b, v17.16b         // vpand        %xmm9,  %xmm0,  %xmm1
        ushr    v0.16b, v7.16b, #4              // vpsrlb       $4,     %xmm0,  %xmm0
        tbl     v1.16b, {v20.16b}, v1.16b       // vpshufb      %xmm1,  %xmm2,  %xmm1
                                                // vmovdqa      .Lk_ipt+16(%rip), %xmm3 # ipthi
        tbl     v2.16b, {v21.16b}, v0.16b       // vpshufb      %xmm0,  %xmm3,  %xmm2
        eor     v0.16b, v1.16b, v16.16b         // vpxor        %xmm5,  %xmm1,  %xmm0
        eor     v0.16b, v0.16b, v2.16b          // vpxor        %xmm2,  %xmm0,  %xmm0
        b       .Lenc_entry

.align  4
.Lenc_loop:
        // middle of middle round
        add     x10, x11, #0x40
        tbl     v4.16b, {v25.16b}, v2.16b               // vpshufb      %xmm2,  %xmm13, %xmm4   # 4 = sb1u
        ld1     {v1.2d}, [x11], #16             // vmovdqa      -0x40(%r11,%r10), %xmm1 # .Lk_mc_forward[]
        tbl     v0.16b, {v24.16b}, v3.16b               // vpshufb      %xmm3,  %xmm12, %xmm0   # 0 = sb1t
        eor     v4.16b, v4.16b, v16.16b         // vpxor        %xmm5,  %xmm4,  %xmm4   # 4 = sb1u + k
        tbl     v5.16b, {v27.16b}, v2.16b               // vpshufb      %xmm2,  %xmm15, %xmm5   # 4 = sb2u
        eor     v0.16b, v0.16b, v4.16b          // vpxor        %xmm4,  %xmm0,  %xmm0   # 0 = A
        tbl     v2.16b, {v26.16b}, v3.16b               // vpshufb      %xmm3,  %xmm14, %xmm2   # 2 = sb2t
        ld1     {v4.2d}, [x10]                  // vmovdqa      (%r11,%r10), %xmm4      # .Lk_mc_backward[]
        tbl     v3.16b, {v0.16b}, v1.16b        // vpshufb      %xmm1,  %xmm0,  %xmm3   # 0 = B
        eor     v2.16b, v2.16b, v5.16b          // vpxor        %xmm5,  %xmm2,  %xmm2   # 2 = 2A
        tbl     v0.16b, {v0.16b}, v4.16b        // vpshufb      %xmm4,  %xmm0,  %xmm0   # 3 = D
        eor     v3.16b, v3.16b, v2.16b          // vpxor        %xmm2,  %xmm3,  %xmm3   # 0 = 2A+B
        tbl     v4.16b, {v3.16b}, v1.16b        // vpshufb      %xmm1,  %xmm3,  %xmm4   # 0 = 2B+C
        eor     v0.16b, v0.16b, v3.16b          // vpxor        %xmm3,  %xmm0,  %xmm0   # 3 = 2A+B+D
        and     x11, x11, #~(1<<6)              // and          $0x30,  %r11            # ... mod 4
        eor     v0.16b, v0.16b, v4.16b          // vpxor        %xmm4,  %xmm0, %xmm0    # 0 = 2A+3B+C+D
        sub     w8, w8, #1                      // nr--

.Lenc_entry:
        // top of round
        and     v1.16b, v0.16b, v17.16b         // vpand        %xmm0,  %xmm9,  %xmm1   # 0 = k
        ushr    v0.16b, v0.16b, #4              // vpsrlb       $4,     %xmm0,  %xmm0   # 1 = i
        tbl     v5.16b, {v19.16b}, v1.16b       // vpshufb      %xmm1,  %xmm11, %xmm5   # 2 = a/k
        eor     v1.16b, v1.16b, v0.16b          // vpxor        %xmm0,  %xmm1,  %xmm1   # 0 = j
        tbl     v3.16b, {v18.16b}, v0.16b       // vpshufb      %xmm0,  %xmm10, %xmm3   # 3 = 1/i
        tbl     v4.16b, {v18.16b}, v1.16b       // vpshufb      %xmm1,  %xmm10, %xmm4   # 4 = 1/j
        eor     v3.16b, v3.16b, v5.16b          // vpxor        %xmm5,  %xmm3,  %xmm3   # 3 = iak = 1/i + a/k
        eor     v4.16b, v4.16b, v5.16b          // vpxor        %xmm5,  %xmm4,  %xmm4   # 4 = jak = 1/j + a/k
        tbl     v2.16b, {v18.16b}, v3.16b       // vpshufb      %xmm3,  %xmm10, %xmm2   # 2 = 1/iak
        tbl     v3.16b, {v18.16b}, v4.16b       // vpshufb      %xmm4,  %xmm10, %xmm3   # 3 = 1/jak
        eor     v2.16b, v2.16b, v1.16b          // vpxor        %xmm1,  %xmm2,  %xmm2   # 2 = io
        eor     v3.16b, v3.16b, v0.16b          // vpxor        %xmm0,  %xmm3,  %xmm3   # 3 = jo
        ld1     {v16.2d}, [x9],#16              // vmovdqu      (%r9),  %xmm5
        cbnz    w8, .Lenc_loop

        // middle of last round
        add     x10, x11, #0x80
                                                // vmovdqa      -0x60(%r10), %xmm4      # 3 : sbou      .Lk_sbo
                                                // vmovdqa      -0x50(%r10), %xmm0      # 0 : sbot      .Lk_sbo+16
        tbl     v4.16b, {v22.16b}, v2.16b               // vpshufb      %xmm2,  %xmm4,  %xmm4   # 4 = sbou
        ld1     {v1.2d}, [x10]                  // vmovdqa      0x40(%r11,%r10), %xmm1  # .Lk_sr[]
        tbl     v0.16b, {v23.16b}, v3.16b               // vpshufb      %xmm3,  %xmm0,  %xmm0   # 0 = sb1t
        eor     v4.16b, v4.16b, v16.16b         // vpxor        %xmm5,  %xmm4,  %xmm4   # 4 = sb1u + k
        eor     v0.16b, v0.16b, v4.16b          // vpxor        %xmm4,  %xmm0,  %xmm0   # 0 = A
        tbl     v0.16b, {v0.16b}, v1.16b        // vpshufb      %xmm1,  %xmm0,  %xmm0
        ret
.size   _vpaes_encrypt_core,.-_vpaes_encrypt_core

.globl  vpaes_encrypt
.type   vpaes_encrypt,%function
.align  4
vpaes_encrypt:
.inst   0xd503233f                      // paciasp
        stp     x29,x30,[sp,#-16]!
        add     x29,sp,#0

        ld1     {v7.16b}, [x0]
        bl      _vpaes_encrypt_preheat
        bl      _vpaes_encrypt_core
        st1     {v0.16b}, [x1]

        ldp     x29,x30,[sp],#16
.inst   0xd50323bf                      // autiasp
        ret
.size   vpaes_encrypt,.-vpaes_encrypt

.type   _vpaes_encrypt_2x,%function
.align  4
_vpaes_encrypt_2x:
        mov     x9, x2
        ldr     w8, [x2,#240]                   // pull rounds
        adr     x11, .Lk_mc_forward+16
                                                // vmovdqa      .Lk_ipt(%rip),  %xmm2   # iptlo
        ld1     {v16.2d}, [x9], #16             // vmovdqu      (%r9),  %xmm5           # round0 key
        and     v1.16b,  v14.16b,  v17.16b      // vpand        %xmm9,  %xmm0,  %xmm1
        ushr    v0.16b,  v14.16b,  #4           // vpsrlb       $4,     %xmm0,  %xmm0
        and     v9.16b,  v15.16b,  v17.16b
        ushr    v8.16b,  v15.16b,  #4
        tbl     v1.16b,  {v20.16b}, v1.16b      // vpshufb      %xmm1,  %xmm2,  %xmm1
        tbl     v9.16b,  {v20.16b}, v9.16b
                                                // vmovdqa      .Lk_ipt+16(%rip), %xmm3 # ipthi
        tbl     v2.16b,  {v21.16b}, v0.16b      // vpshufb      %xmm0,  %xmm3,  %xmm2
        tbl     v10.16b, {v21.16b}, v8.16b
        eor     v0.16b,  v1.16b,   v16.16b      // vpxor        %xmm5,  %xmm1,  %xmm0
        eor     v8.16b,  v9.16b,   v16.16b
        eor     v0.16b,  v0.16b,   v2.16b       // vpxor        %xmm2,  %xmm0,  %xmm0
        eor     v8.16b,  v8.16b,   v10.16b
        b       .Lenc_2x_entry

.align  4
.Lenc_2x_loop:
        // middle of middle round
        add     x10, x11, #0x40
        tbl     v4.16b,  {v25.16b}, v2.16b      // vpshufb      %xmm2,  %xmm13, %xmm4   # 4 = sb1u
        tbl     v12.16b, {v25.16b}, v10.16b
        ld1     {v1.2d}, [x11], #16             // vmovdqa      -0x40(%r11,%r10), %xmm1 # .Lk_mc_forward[]
        tbl     v0.16b,  {v24.16b}, v3.16b      // vpshufb      %xmm3,  %xmm12, %xmm0   # 0 = sb1t
        tbl     v8.16b,  {v24.16b}, v11.16b
        eor     v4.16b,  v4.16b,  v16.16b       // vpxor        %xmm5,  %xmm4,  %xmm4   # 4 = sb1u + k
        eor     v12.16b, v12.16b, v16.16b
        tbl     v5.16b,  {v27.16b}, v2.16b      // vpshufb      %xmm2,  %xmm15, %xmm5   # 4 = sb2u
        tbl     v13.16b, {v27.16b}, v10.16b
        eor     v0.16b,  v0.16b,  v4.16b        // vpxor        %xmm4,  %xmm0,  %xmm0   # 0 = A
        eor     v8.16b,  v8.16b,  v12.16b
        tbl     v2.16b,  {v26.16b}, v3.16b      // vpshufb      %xmm3,  %xmm14, %xmm2   # 2 = sb2t
        tbl     v10.16b, {v26.16b}, v11.16b
        ld1     {v4.2d}, [x10]                  // vmovdqa      (%r11,%r10), %xmm4      # .Lk_mc_backward[]
        tbl     v3.16b,  {v0.16b}, v1.16b       // vpshufb      %xmm1,  %xmm0,  %xmm3   # 0 = B
        tbl     v11.16b, {v8.16b}, v1.16b
        eor     v2.16b,  v2.16b,  v5.16b        // vpxor        %xmm5,  %xmm2,  %xmm2   # 2 = 2A
        eor     v10.16b, v10.16b, v13.16b
        tbl     v0.16b,  {v0.16b}, v4.16b       // vpshufb      %xmm4,  %xmm0,  %xmm0   # 3 = D
        tbl     v8.16b,  {v8.16b}, v4.16b
        eor     v3.16b,  v3.16b,  v2.16b        // vpxor        %xmm2,  %xmm3,  %xmm3   # 0 = 2A+B
        eor     v11.16b, v11.16b, v10.16b
        tbl     v4.16b,  {v3.16b}, v1.16b       // vpshufb      %xmm1,  %xmm3,  %xmm4   # 0 = 2B+C
        tbl     v12.16b, {v11.16b},v1.16b
        eor     v0.16b,  v0.16b,  v3.16b        // vpxor        %xmm3,  %xmm0,  %xmm0   # 3 = 2A+B+D
        eor     v8.16b,  v8.16b,  v11.16b
        and     x11, x11, #~(1<<6)              // and          $0x30,  %r11            # ... mod 4
        eor     v0.16b,  v0.16b,  v4.16b        // vpxor        %xmm4,  %xmm0, %xmm0    # 0 = 2A+3B+C+D
        eor     v8.16b,  v8.16b,  v12.16b
        sub     w8, w8, #1                      // nr--

.Lenc_2x_entry:
        // top of round
        and     v1.16b,  v0.16b, v17.16b        // vpand        %xmm0,  %xmm9,  %xmm1   # 0 = k
        ushr    v0.16b,  v0.16b, #4             // vpsrlb       $4,     %xmm0,  %xmm0   # 1 = i
        and     v9.16b,  v8.16b, v17.16b
        ushr    v8.16b,  v8.16b, #4
        tbl     v5.16b,  {v19.16b},v1.16b       // vpshufb      %xmm1,  %xmm11, %xmm5   # 2 = a/k
        tbl     v13.16b, {v19.16b},v9.16b
        eor     v1.16b,  v1.16b,  v0.16b        // vpxor        %xmm0,  %xmm1,  %xmm1   # 0 = j
        eor     v9.16b,  v9.16b,  v8.16b
        tbl     v3.16b,  {v18.16b},v0.16b       // vpshufb      %xmm0,  %xmm10, %xmm3   # 3 = 1/i
        tbl     v11.16b, {v18.16b},v8.16b
        tbl     v4.16b,  {v18.16b},v1.16b       // vpshufb      %xmm1,  %xmm10, %xmm4   # 4 = 1/j
        tbl     v12.16b, {v18.16b},v9.16b
        eor     v3.16b,  v3.16b,  v5.16b        // vpxor        %xmm5,  %xmm3,  %xmm3   # 3 = iak = 1/i + a/k
        eor     v11.16b, v11.16b, v13.16b
        eor     v4.16b,  v4.16b,  v5.16b        // vpxor        %xmm5,  %xmm4,  %xmm4   # 4 = jak = 1/j + a/k
        eor     v12.16b, v12.16b, v13.16b
        tbl     v2.16b,  {v18.16b},v3.16b       // vpshufb      %xmm3,  %xmm10, %xmm2   # 2 = 1/iak
        tbl     v10.16b, {v18.16b},v11.16b
        tbl     v3.16b,  {v18.16b},v4.16b       // vpshufb      %xmm4,  %xmm10, %xmm3   # 3 = 1/jak
        tbl     v11.16b, {v18.16b},v12.16b
        eor     v2.16b,  v2.16b,  v1.16b        // vpxor        %xmm1,  %xmm2,  %xmm2   # 2 = io
        eor     v10.16b, v10.16b, v9.16b
        eor     v3.16b,  v3.16b,  v0.16b        // vpxor        %xmm0,  %xmm3,  %xmm3   # 3 = jo
        eor     v11.16b, v11.16b, v8.16b
        ld1     {v16.2d}, [x9],#16              // vmovdqu      (%r9),  %xmm5
        cbnz    w8, .Lenc_2x_loop

        // middle of last round
        add     x10, x11, #0x80
                                                // vmovdqa      -0x60(%r10), %xmm4      # 3 : sbou      .Lk_sbo
                                                // vmovdqa      -0x50(%r10), %xmm0      # 0 : sbot      .Lk_sbo+16
        tbl     v4.16b,  {v22.16b}, v2.16b      // vpshufb      %xmm2,  %xmm4,  %xmm4   # 4 = sbou
        tbl     v12.16b, {v22.16b}, v10.16b
        ld1     {v1.2d}, [x10]                  // vmovdqa      0x40(%r11,%r10), %xmm1  # .Lk_sr[]
        tbl     v0.16b,  {v23.16b}, v3.16b      // vpshufb      %xmm3,  %xmm0,  %xmm0   # 0 = sb1t
        tbl     v8.16b,  {v23.16b}, v11.16b
        eor     v4.16b,  v4.16b,  v16.16b       // vpxor        %xmm5,  %xmm4,  %xmm4   # 4 = sb1u + k
        eor     v12.16b, v12.16b, v16.16b
        eor     v0.16b,  v0.16b,  v4.16b        // vpxor        %xmm4,  %xmm0,  %xmm0   # 0 = A
        eor     v8.16b,  v8.16b,  v12.16b
        tbl     v0.16b,  {v0.16b},v1.16b        // vpshufb      %xmm1,  %xmm0,  %xmm0
        tbl     v1.16b,  {v8.16b},v1.16b
        ret
.size   _vpaes_encrypt_2x,.-_vpaes_encrypt_2x

.type   _vpaes_decrypt_preheat,%function
.align  4
_vpaes_decrypt_preheat:
        adr     x10, .Lk_inv
        movi    v17.16b, #0x0f
        adr     x11, .Lk_dipt
        ld1     {v18.2d,v19.2d}, [x10],#32      // .Lk_inv
        ld1     {v20.2d,v21.2d,v22.2d,v23.2d}, [x11],#64        // .Lk_dipt, .Lk_dsbo
        ld1     {v24.2d,v25.2d,v26.2d,v27.2d}, [x11],#64        // .Lk_dsb9, .Lk_dsbd
        ld1     {v28.2d,v29.2d,v30.2d,v31.2d}, [x11]            // .Lk_dsbb, .Lk_dsbe
        ret
.size   _vpaes_decrypt_preheat,.-_vpaes_decrypt_preheat

//
//  Decryption core
//
//  Same API as encryption core.
//
.type   _vpaes_decrypt_core,%function
.align  4
_vpaes_decrypt_core:
        mov     x9, x2
        ldr     w8, [x2,#240]                   // pull rounds

                                                // vmovdqa      .Lk_dipt(%rip), %xmm2   # iptlo
        lsl     x11, x8, #4                     // mov  %rax,   %r11;   shl     $4, %r11
        eor     x11, x11, #0x30                 // xor          $0x30,  %r11
        adr     x10, .Lk_sr
        and     x11, x11, #0x30                 // and          $0x30,  %r11
        add     x11, x11, x10
        adr     x10, .Lk_mc_forward+48

        ld1     {v16.2d}, [x9],#16              // vmovdqu      (%r9),  %xmm4           # round0 key
        and     v1.16b, v7.16b, v17.16b         // vpand        %xmm9,  %xmm0,  %xmm1
        ushr    v0.16b, v7.16b, #4              // vpsrlb       $4,     %xmm0,  %xmm0
        tbl     v2.16b, {v20.16b}, v1.16b       // vpshufb      %xmm1,  %xmm2,  %xmm2
        ld1     {v5.2d}, [x10]                  // vmovdqa      .Lk_mc_forward+48(%rip), %xmm5
                                                // vmovdqa      .Lk_dipt+16(%rip), %xmm1 # ipthi
        tbl     v0.16b, {v21.16b}, v0.16b       // vpshufb      %xmm0,  %xmm1,  %xmm0
        eor     v2.16b, v2.16b, v16.16b         // vpxor        %xmm4,  %xmm2,  %xmm2
        eor     v0.16b, v0.16b, v2.16b          // vpxor        %xmm2,  %xmm0,  %xmm0
        b       .Ldec_entry

.align  4
.Ldec_loop:
//
//  Inverse mix columns
//
                                                // vmovdqa      -0x20(%r10),%xmm4               # 4 : sb9u
                                                // vmovdqa      -0x10(%r10),%xmm1               # 0 : sb9t
        tbl     v4.16b, {v24.16b}, v2.16b               // vpshufb      %xmm2,  %xmm4,  %xmm4           # 4 = sb9u
        tbl     v1.16b, {v25.16b}, v3.16b               // vpshufb      %xmm3,  %xmm1,  %xmm1           # 0 = sb9t
        eor     v0.16b, v4.16b, v16.16b         // vpxor        %xmm4,  %xmm0,  %xmm0
                                                // vmovdqa      0x00(%r10),%xmm4                # 4 : sbdu
        eor     v0.16b, v0.16b, v1.16b          // vpxor        %xmm1,  %xmm0,  %xmm0           # 0 = ch
                                                // vmovdqa      0x10(%r10),%xmm1                # 0 : sbdt

        tbl     v4.16b, {v26.16b}, v2.16b               // vpshufb      %xmm2,  %xmm4,  %xmm4           # 4 = sbdu
        tbl     v0.16b, {v0.16b}, v5.16b        // vpshufb      %xmm5,  %xmm0,  %xmm0           # MC ch
        tbl     v1.16b, {v27.16b}, v3.16b               // vpshufb      %xmm3,  %xmm1,  %xmm1           # 0 = sbdt
        eor     v0.16b, v0.16b, v4.16b          // vpxor        %xmm4,  %xmm0,  %xmm0           # 4 = ch
                                                // vmovdqa      0x20(%r10),     %xmm4           # 4 : sbbu
        eor     v0.16b, v0.16b, v1.16b          // vpxor        %xmm1,  %xmm0,  %xmm0           # 0 = ch
                                                // vmovdqa      0x30(%r10),     %xmm1           # 0 : sbbt

        tbl     v4.16b, {v28.16b}, v2.16b               // vpshufb      %xmm2,  %xmm4,  %xmm4           # 4 = sbbu
        tbl     v0.16b, {v0.16b}, v5.16b        // vpshufb      %xmm5,  %xmm0,  %xmm0           # MC ch
        tbl     v1.16b, {v29.16b}, v3.16b               // vpshufb      %xmm3,  %xmm1,  %xmm1           # 0 = sbbt
        eor     v0.16b, v0.16b, v4.16b          // vpxor        %xmm4,  %xmm0,  %xmm0           # 4 = ch
                                                // vmovdqa      0x40(%r10),     %xmm4           # 4 : sbeu
        eor     v0.16b, v0.16b, v1.16b          // vpxor        %xmm1,  %xmm0,  %xmm0           # 0 = ch
                                                // vmovdqa      0x50(%r10),     %xmm1           # 0 : sbet

        tbl     v4.16b, {v30.16b}, v2.16b               // vpshufb      %xmm2,  %xmm4,  %xmm4           # 4 = sbeu
        tbl     v0.16b, {v0.16b}, v5.16b        // vpshufb      %xmm5,  %xmm0,  %xmm0           # MC ch
        tbl     v1.16b, {v31.16b}, v3.16b               // vpshufb      %xmm3,  %xmm1,  %xmm1           # 0 = sbet
        eor     v0.16b, v0.16b, v4.16b          // vpxor        %xmm4,  %xmm0,  %xmm0           # 4 = ch
        ext     v5.16b, v5.16b, v5.16b, #12     // vpalignr $12,        %xmm5,  %xmm5,  %xmm5
        eor     v0.16b, v0.16b, v1.16b          // vpxor        %xmm1,  %xmm0,  %xmm0           # 0 = ch
        sub     w8, w8, #1                      // sub          $1,%rax                 # nr--

.Ldec_entry:
        // top of round
        and     v1.16b, v0.16b, v17.16b         // vpand        %xmm9,  %xmm0,  %xmm1   # 0 = k
        ushr    v0.16b, v0.16b, #4              // vpsrlb       $4,     %xmm0,  %xmm0   # 1 = i
        tbl     v2.16b, {v19.16b}, v1.16b       // vpshufb      %xmm1,  %xmm11, %xmm2   # 2 = a/k
        eor     v1.16b, v1.16b, v0.16b          // vpxor        %xmm0,  %xmm1,  %xmm1   # 0 = j
        tbl     v3.16b, {v18.16b}, v0.16b       // vpshufb      %xmm0,  %xmm10, %xmm3   # 3 = 1/i
        tbl     v4.16b, {v18.16b}, v1.16b       // vpshufb      %xmm1,  %xmm10, %xmm4   # 4 = 1/j
        eor     v3.16b, v3.16b, v2.16b          // vpxor        %xmm2,  %xmm3,  %xmm3   # 3 = iak = 1/i + a/k
        eor     v4.16b, v4.16b, v2.16b          // vpxor        %xmm2,  %xmm4,  %xmm4   # 4 = jak = 1/j + a/k
        tbl     v2.16b, {v18.16b}, v3.16b       // vpshufb      %xmm3,  %xmm10, %xmm2   # 2 = 1/iak
        tbl     v3.16b, {v18.16b}, v4.16b       // vpshufb      %xmm4,  %xmm10, %xmm3   # 3 = 1/jak
        eor     v2.16b, v2.16b, v1.16b          // vpxor        %xmm1,  %xmm2,  %xmm2   # 2 = io
        eor     v3.16b, v3.16b, v0.16b          // vpxor        %xmm0,  %xmm3,  %xmm3   # 3 = jo
        ld1     {v16.2d}, [x9],#16              // vmovdqu      (%r9),  %xmm0
        cbnz    w8, .Ldec_loop

        // middle of last round
                                                // vmovdqa      0x60(%r10),     %xmm4   # 3 : sbou
        tbl     v4.16b, {v22.16b}, v2.16b               // vpshufb      %xmm2,  %xmm4,  %xmm4   # 4 = sbou
                                                // vmovdqa      0x70(%r10),     %xmm1   # 0 : sbot
        ld1     {v2.2d}, [x11]                  // vmovdqa      -0x160(%r11),   %xmm2   # .Lk_sr-.Lk_dsbd=-0x160
        tbl     v1.16b, {v23.16b}, v3.16b               // vpshufb      %xmm3,  %xmm1,  %xmm1   # 0 = sb1t
        eor     v4.16b, v4.16b, v16.16b         // vpxor        %xmm0,  %xmm4,  %xmm4   # 4 = sb1u + k
        eor     v0.16b, v1.16b, v4.16b          // vpxor        %xmm4,  %xmm1,  %xmm0   # 0 = A
        tbl     v0.16b, {v0.16b}, v2.16b        // vpshufb      %xmm2,  %xmm0,  %xmm0
        ret
.size   _vpaes_decrypt_core,.-_vpaes_decrypt_core

.globl  vpaes_decrypt
.type   vpaes_decrypt,%function
.align  4
vpaes_decrypt:
.inst   0xd503233f                      // paciasp
        stp     x29,x30,[sp,#-16]!
        add     x29,sp,#0

        ld1     {v7.16b}, [x0]
        bl      _vpaes_decrypt_preheat
        bl      _vpaes_decrypt_core
        st1     {v0.16b}, [x1]

        ldp     x29,x30,[sp],#16
.inst   0xd50323bf                      // autiasp
        ret
.size   vpaes_decrypt,.-vpaes_decrypt

// v14-v15 input, v0-v1 output
.type   _vpaes_decrypt_2x,%function
.align  4
_vpaes_decrypt_2x:
        mov     x9, x2
        ldr     w8, [x2,#240]                   // pull rounds

                                                // vmovdqa      .Lk_dipt(%rip), %xmm2   # iptlo
        lsl     x11, x8, #4                     // mov  %rax,   %r11;   shl     $4, %r11
        eor     x11, x11, #0x30                 // xor          $0x30,  %r11
        adr     x10, .Lk_sr
        and     x11, x11, #0x30                 // and          $0x30,  %r11
        add     x11, x11, x10
        adr     x10, .Lk_mc_forward+48

        ld1     {v16.2d}, [x9],#16              // vmovdqu      (%r9),  %xmm4           # round0 key
        and     v1.16b,  v14.16b, v17.16b       // vpand        %xmm9,  %xmm0,  %xmm1
        ushr    v0.16b,  v14.16b, #4            // vpsrlb       $4,     %xmm0,  %xmm0
        and     v9.16b,  v15.16b, v17.16b
        ushr    v8.16b,  v15.16b, #4
        tbl     v2.16b,  {v20.16b},v1.16b       // vpshufb      %xmm1,  %xmm2,  %xmm2
        tbl     v10.16b, {v20.16b},v9.16b
        ld1     {v5.2d}, [x10]                  // vmovdqa      .Lk_mc_forward+48(%rip), %xmm5
                                                // vmovdqa      .Lk_dipt+16(%rip), %xmm1 # ipthi
        tbl     v0.16b,  {v21.16b},v0.16b       // vpshufb      %xmm0,  %xmm1,  %xmm0
        tbl     v8.16b,  {v21.16b},v8.16b
        eor     v2.16b,  v2.16b,  v16.16b       // vpxor        %xmm4,  %xmm2,  %xmm2
        eor     v10.16b, v10.16b, v16.16b
        eor     v0.16b,  v0.16b,  v2.16b        // vpxor        %xmm2,  %xmm0,  %xmm0
        eor     v8.16b,  v8.16b,  v10.16b
        b       .Ldec_2x_entry

.align  4
.Ldec_2x_loop:
//
//  Inverse mix columns
//
                                                // vmovdqa      -0x20(%r10),%xmm4               # 4 : sb9u
                                                // vmovdqa      -0x10(%r10),%xmm1               # 0 : sb9t
        tbl     v4.16b,  {v24.16b}, v2.16b      // vpshufb      %xmm2,  %xmm4,  %xmm4           # 4 = sb9u
        tbl     v12.16b, {v24.16b}, v10.16b
        tbl     v1.16b,  {v25.16b}, v3.16b      // vpshufb      %xmm3,  %xmm1,  %xmm1           # 0 = sb9t
        tbl     v9.16b,  {v25.16b}, v11.16b
        eor     v0.16b,  v4.16b,  v16.16b       // vpxor        %xmm4,  %xmm0,  %xmm0
        eor     v8.16b,  v12.16b, v16.16b
                                                // vmovdqa      0x00(%r10),%xmm4                # 4 : sbdu
        eor     v0.16b,  v0.16b,  v1.16b        // vpxor        %xmm1,  %xmm0,  %xmm0           # 0 = ch
        eor     v8.16b,  v8.16b,  v9.16b        // vpxor        %xmm1,  %xmm0,  %xmm0           # 0 = ch
                                                // vmovdqa      0x10(%r10),%xmm1                # 0 : sbdt

        tbl     v4.16b,  {v26.16b}, v2.16b      // vpshufb      %xmm2,  %xmm4,  %xmm4           # 4 = sbdu
        tbl     v12.16b, {v26.16b}, v10.16b
        tbl     v0.16b,  {v0.16b},v5.16b        // vpshufb      %xmm5,  %xmm0,  %xmm0           # MC ch
        tbl     v8.16b,  {v8.16b},v5.16b
        tbl     v1.16b,  {v27.16b}, v3.16b      // vpshufb      %xmm3,  %xmm1,  %xmm1           # 0 = sbdt
        tbl     v9.16b,  {v27.16b}, v11.16b
        eor     v0.16b,  v0.16b,  v4.16b        // vpxor        %xmm4,  %xmm0,  %xmm0           # 4 = ch
        eor     v8.16b,  v8.16b,  v12.16b
                                                // vmovdqa      0x20(%r10),     %xmm4           # 4 : sbbu
        eor     v0.16b,  v0.16b,  v1.16b        // vpxor        %xmm1,  %xmm0,  %xmm0           # 0 = ch
        eor     v8.16b,  v8.16b,  v9.16b
                                                // vmovdqa      0x30(%r10),     %xmm1           # 0 : sbbt

        tbl     v4.16b,  {v28.16b}, v2.16b      // vpshufb      %xmm2,  %xmm4,  %xmm4           # 4 = sbbu
        tbl     v12.16b, {v28.16b}, v10.16b
        tbl     v0.16b,  {v0.16b},v5.16b        // vpshufb      %xmm5,  %xmm0,  %xmm0           # MC ch
        tbl     v8.16b,  {v8.16b},v5.16b
        tbl     v1.16b,  {v29.16b}, v3.16b      // vpshufb      %xmm3,  %xmm1,  %xmm1           # 0 = sbbt
        tbl     v9.16b,  {v29.16b}, v11.16b
        eor     v0.16b,  v0.16b,  v4.16b        // vpxor        %xmm4,  %xmm0,  %xmm0           # 4 = ch
        eor     v8.16b,  v8.16b,  v12.16b
                                                // vmovdqa      0x40(%r10),     %xmm4           # 4 : sbeu
        eor     v0.16b,  v0.16b,  v1.16b        // vpxor        %xmm1,  %xmm0,  %xmm0           # 0 = ch
        eor     v8.16b,  v8.16b,  v9.16b
                                                // vmovdqa      0x50(%r10),     %xmm1           # 0 : sbet

        tbl     v4.16b,  {v30.16b}, v2.16b      // vpshufb      %xmm2,  %xmm4,  %xmm4           # 4 = sbeu
        tbl     v12.16b, {v30.16b}, v10.16b
        tbl     v0.16b,  {v0.16b},v5.16b        // vpshufb      %xmm5,  %xmm0,  %xmm0           # MC ch
        tbl     v8.16b,  {v8.16b},v5.16b
        tbl     v1.16b,  {v31.16b}, v3.16b      // vpshufb      %xmm3,  %xmm1,  %xmm1           # 0 = sbet
        tbl     v9.16b,  {v31.16b}, v11.16b
        eor     v0.16b,  v0.16b,  v4.16b        // vpxor        %xmm4,  %xmm0,  %xmm0           # 4 = ch
        eor     v8.16b,  v8.16b,  v12.16b
        ext     v5.16b,  v5.16b,  v5.16b, #12   // vpalignr $12,        %xmm5,  %xmm5,  %xmm5
        eor     v0.16b,  v0.16b,  v1.16b        // vpxor        %xmm1,  %xmm0,  %xmm0           # 0 = ch
        eor     v8.16b,  v8.16b,  v9.16b
        sub     w8, w8, #1                      // sub          $1,%rax                 # nr--

.Ldec_2x_entry:
        // top of round
        and     v1.16b,  v0.16b,  v17.16b       // vpand        %xmm9,  %xmm0,  %xmm1   # 0 = k
        ushr    v0.16b,  v0.16b,  #4            // vpsrlb       $4,     %xmm0,  %xmm0   # 1 = i
        and     v9.16b,  v8.16b,  v17.16b
        ushr    v8.16b,  v8.16b,  #4
        tbl     v2.16b,  {v19.16b},v1.16b       // vpshufb      %xmm1,  %xmm11, %xmm2   # 2 = a/k
        tbl     v10.16b, {v19.16b},v9.16b
        eor     v1.16b,  v1.16b,  v0.16b        // vpxor        %xmm0,  %xmm1,  %xmm1   # 0 = j
        eor     v9.16b,  v9.16b,  v8.16b
        tbl     v3.16b,  {v18.16b},v0.16b       // vpshufb      %xmm0,  %xmm10, %xmm3   # 3 = 1/i
        tbl     v11.16b, {v18.16b},v8.16b
        tbl     v4.16b,  {v18.16b},v1.16b       // vpshufb      %xmm1,  %xmm10, %xmm4   # 4 = 1/j
        tbl     v12.16b, {v18.16b},v9.16b
        eor     v3.16b,  v3.16b,  v2.16b        // vpxor        %xmm2,  %xmm3,  %xmm3   # 3 = iak = 1/i + a/k
        eor     v11.16b, v11.16b, v10.16b
        eor     v4.16b,  v4.16b,  v2.16b        // vpxor        %xmm2,  %xmm4,  %xmm4   # 4 = jak = 1/j + a/k
        eor     v12.16b, v12.16b, v10.16b
        tbl     v2.16b,  {v18.16b},v3.16b       // vpshufb      %xmm3,  %xmm10, %xmm2   # 2 = 1/iak
        tbl     v10.16b, {v18.16b},v11.16b
        tbl     v3.16b,  {v18.16b},v4.16b       // vpshufb      %xmm4,  %xmm10, %xmm3   # 3 = 1/jak
        tbl     v11.16b, {v18.16b},v12.16b
        eor     v2.16b,  v2.16b,  v1.16b        // vpxor        %xmm1,  %xmm2,  %xmm2   # 2 = io
        eor     v10.16b, v10.16b, v9.16b
        eor     v3.16b,  v3.16b,  v0.16b        // vpxor        %xmm0,  %xmm3,  %xmm3   # 3 = jo
        eor     v11.16b, v11.16b, v8.16b
        ld1     {v16.2d}, [x9],#16              // vmovdqu      (%r9),  %xmm0
        cbnz    w8, .Ldec_2x_loop

        // middle of last round
                                                // vmovdqa      0x60(%r10),     %xmm4   # 3 : sbou
        tbl     v4.16b,  {v22.16b}, v2.16b      // vpshufb      %xmm2,  %xmm4,  %xmm4   # 4 = sbou
        tbl     v12.16b, {v22.16b}, v10.16b
                                                // vmovdqa      0x70(%r10),     %xmm1   # 0 : sbot
        tbl     v1.16b,  {v23.16b}, v3.16b      // vpshufb      %xmm3,  %xmm1,  %xmm1   # 0 = sb1t
        tbl     v9.16b,  {v23.16b}, v11.16b
        ld1     {v2.2d}, [x11]                  // vmovdqa      -0x160(%r11),   %xmm2   # .Lk_sr-.Lk_dsbd=-0x160
        eor     v4.16b,  v4.16b,  v16.16b       // vpxor        %xmm0,  %xmm4,  %xmm4   # 4 = sb1u + k
        eor     v12.16b, v12.16b, v16.16b
        eor     v0.16b,  v1.16b,  v4.16b        // vpxor        %xmm4,  %xmm1,  %xmm0   # 0 = A
        eor     v8.16b,  v9.16b,  v12.16b
        tbl     v0.16b,  {v0.16b},v2.16b        // vpshufb      %xmm2,  %xmm0,  %xmm0
        tbl     v1.16b,  {v8.16b},v2.16b
        ret
.size   _vpaes_decrypt_2x,.-_vpaes_decrypt_2x
////////////////////////////////////////////////////////
//                                                    //
//                  AES key schedule                  //
//                                                    //
////////////////////////////////////////////////////////
.type   _vpaes_key_preheat,%function
.align  4
_vpaes_key_preheat:
        adr     x10, .Lk_inv
        movi    v16.16b, #0x5b                  // .Lk_s63
        adr     x11, .Lk_sb1
        movi    v17.16b, #0x0f                  // .Lk_s0F
        ld1     {v18.2d,v19.2d,v20.2d,v21.2d}, [x10]            // .Lk_inv, .Lk_ipt
        adr     x10, .Lk_dksd
        ld1     {v22.2d,v23.2d}, [x11]          // .Lk_sb1
        adr     x11, .Lk_mc_forward
        ld1     {v24.2d,v25.2d,v26.2d,v27.2d}, [x10],#64        // .Lk_dksd, .Lk_dksb
        ld1     {v28.2d,v29.2d,v30.2d,v31.2d}, [x10],#64        // .Lk_dkse, .Lk_dks9
        ld1     {v8.2d}, [x10]                  // .Lk_rcon
        ld1     {v9.2d}, [x11]                  // .Lk_mc_forward[0]
        ret
.size   _vpaes_key_preheat,.-_vpaes_key_preheat

.type   _vpaes_schedule_core,%function
.align  4
_vpaes_schedule_core:
.inst   0xd503233f                      // paciasp
        stp     x29, x30, [sp,#-16]!
        add     x29,sp,#0

        bl      _vpaes_key_preheat              // load the tables

        ld1     {v0.16b}, [x0],#16              // vmovdqu      (%rdi), %xmm0           # load key (unaligned)

        // input transform
        mov     v3.16b, v0.16b                  // vmovdqa      %xmm0,  %xmm3
        bl      _vpaes_schedule_transform
        mov     v7.16b, v0.16b                  // vmovdqa      %xmm0,  %xmm7

        adr     x10, .Lk_sr                     // lea  .Lk_sr(%rip),%r10
        add     x8, x8, x10
        cbnz    w3, .Lschedule_am_decrypting

        // encrypting, output zeroth round key after transform
        st1     {v0.2d}, [x2]                   // vmovdqu      %xmm0,  (%rdx)
        b       .Lschedule_go

.Lschedule_am_decrypting:
        // decrypting, output zeroth round key after shiftrows
        ld1     {v1.2d}, [x8]                   // vmovdqa      (%r8,%r10),     %xmm1
        tbl     v3.16b, {v3.16b}, v1.16b        // vpshufb  %xmm1,      %xmm3,  %xmm3
        st1     {v3.2d}, [x2]                   // vmovdqu      %xmm3,  (%rdx)
        eor     x8, x8, #0x30                   // xor  $0x30, %r8

.Lschedule_go:
        cmp     w1, #192                        // cmp  $192,   %esi
        b.hi    .Lschedule_256
        b.eq    .Lschedule_192
        // 128: fall though

//
//  .schedule_128
//
//  128-bit specific part of key schedule.
//
//  This schedule is really simple, because all its parts
//  are accomplished by the subroutines.
//
.Lschedule_128:
        mov     x0, #10                 // mov  $10, %esi

.Loop_schedule_128:
        sub     x0, x0, #1                      // dec  %esi
        bl      _vpaes_schedule_round
        cbz     x0, .Lschedule_mangle_last
        bl      _vpaes_schedule_mangle          // write output
        b       .Loop_schedule_128

//
//  .aes_schedule_192
//
//  192-bit specific part of key schedule.
//
//  The main body of this schedule is the same as the 128-bit
//  schedule, but with more smearing.  The long, high side is
//  stored in %xmm7 as before, and the short, low side is in
//  the high bits of %xmm6.
//
//  This schedule is somewhat nastier, however, because each
//  round produces 192 bits of key material, or 1.5 round keys.
//  Therefore, on each cycle we do 2 rounds and produce 3 round
//  keys.
//
.align  4
.Lschedule_192:
        sub     x0, x0, #8
        ld1     {v0.16b}, [x0]          // vmovdqu      8(%rdi),%xmm0           # load key part 2 (very unaligned)
        bl      _vpaes_schedule_transform       // input transform
        mov     v6.16b, v0.16b                  // vmovdqa      %xmm0,  %xmm6           # save short part
        eor     v4.16b, v4.16b, v4.16b          // vpxor        %xmm4,  %xmm4, %xmm4    # clear 4
        ins     v6.d[0], v4.d[0]                // vmovhlps     %xmm4,  %xmm6,  %xmm6           # clobber low side with zeros
        mov     x0, #4                  // mov  $4,     %esi

.Loop_schedule_192:
        sub     x0, x0, #1                      // dec  %esi
        bl      _vpaes_schedule_round
        ext     v0.16b, v6.16b, v0.16b, #8      // vpalignr     $8,%xmm6,%xmm0,%xmm0
        bl      _vpaes_schedule_mangle          // save key n
        bl      _vpaes_schedule_192_smear
        bl      _vpaes_schedule_mangle          // save key n+1
        bl      _vpaes_schedule_round
        cbz     x0, .Lschedule_mangle_last
        bl      _vpaes_schedule_mangle          // save key n+2
        bl      _vpaes_schedule_192_smear
        b       .Loop_schedule_192

//
//  .aes_schedule_256
//
//  256-bit specific part of key schedule.
//
//  The structure here is very similar to the 128-bit
//  schedule, but with an additional "low side" in
//  %xmm6.  The low side's rounds are the same as the
//  high side's, except no rcon and no rotation.
//
.align  4
.Lschedule_256:
        ld1     {v0.16b}, [x0]          // vmovdqu      16(%rdi),%xmm0          # load key part 2 (unaligned)
        bl      _vpaes_schedule_transform       // input transform
        mov     x0, #7                  // mov  $7, %esi

.Loop_schedule_256:
        sub     x0, x0, #1                      // dec  %esi
        bl      _vpaes_schedule_mangle          // output low result
        mov     v6.16b, v0.16b                  // vmovdqa      %xmm0,  %xmm6           # save cur_lo in xmm6

        // high round
        bl      _vpaes_schedule_round
        cbz     x0, .Lschedule_mangle_last
        bl      _vpaes_schedule_mangle

        // low round. swap xmm7 and xmm6
        dup     v0.4s, v0.s[3]                  // vpshufd      $0xFF,  %xmm0,  %xmm0
        movi    v4.16b, #0
        mov     v5.16b, v7.16b                  // vmovdqa      %xmm7,  %xmm5
        mov     v7.16b, v6.16b                  // vmovdqa      %xmm6,  %xmm7
        bl      _vpaes_schedule_low_round
        mov     v7.16b, v5.16b                  // vmovdqa      %xmm5,  %xmm7

        b       .Loop_schedule_256

//
//  .aes_schedule_mangle_last
//
//  Mangler for last round of key schedule
//  Mangles %xmm0
//    when encrypting, outputs out(%xmm0) ^ 63
//    when decrypting, outputs unskew(%xmm0)
//
//  Always called right before return... jumps to cleanup and exits
//
.align  4
.Lschedule_mangle_last:
        // schedule last round key from xmm0
        adr     x11, .Lk_deskew                 // lea  .Lk_deskew(%rip),%r11   # prepare to deskew
        cbnz    w3, .Lschedule_mangle_last_dec

        // encrypting
        ld1     {v1.2d}, [x8]                   // vmovdqa      (%r8,%r10),%xmm1
        adr     x11, .Lk_opt                    // lea  .Lk_opt(%rip),  %r11            # prepare to output transform
        add     x2, x2, #32                     // add  $32,    %rdx
        tbl     v0.16b, {v0.16b}, v1.16b        // vpshufb      %xmm1,  %xmm0,  %xmm0           # output permute

.Lschedule_mangle_last_dec:
        ld1     {v20.2d,v21.2d}, [x11]          // reload constants
        sub     x2, x2, #16                     // add  $-16,   %rdx
        eor     v0.16b, v0.16b, v16.16b         // vpxor        .Lk_s63(%rip),  %xmm0,  %xmm0
        bl      _vpaes_schedule_transform       // output transform
        st1     {v0.2d}, [x2]                   // vmovdqu      %xmm0,  (%rdx)          # save last key

        // cleanup
        eor     v0.16b, v0.16b, v0.16b          // vpxor        %xmm0,  %xmm0,  %xmm0
        eor     v1.16b, v1.16b, v1.16b          // vpxor        %xmm1,  %xmm1,  %xmm1
        eor     v2.16b, v2.16b, v2.16b          // vpxor        %xmm2,  %xmm2,  %xmm2
        eor     v3.16b, v3.16b, v3.16b          // vpxor        %xmm3,  %xmm3,  %xmm3
        eor     v4.16b, v4.16b, v4.16b          // vpxor        %xmm4,  %xmm4,  %xmm4
        eor     v5.16b, v5.16b, v5.16b          // vpxor        %xmm5,  %xmm5,  %xmm5
        eor     v6.16b, v6.16b, v6.16b          // vpxor        %xmm6,  %xmm6,  %xmm6
        eor     v7.16b, v7.16b, v7.16b          // vpxor        %xmm7,  %xmm7,  %xmm7
        ldp     x29, x30, [sp],#16
.inst   0xd50323bf                      // autiasp
        ret
.size   _vpaes_schedule_core,.-_vpaes_schedule_core

//
//  .aes_schedule_192_smear
//
//  Smear the short, low side in the 192-bit key schedule.
//
//  Inputs:
//    %xmm7: high side, b  a  x  y
//    %xmm6:  low side, d  c  0  0
//    %xmm13: 0
//
//  Outputs:
//    %xmm6: b+c+d  b+c  0  0
//    %xmm0: b+c+d  b+c  b  a
//
.type   _vpaes_schedule_192_smear,%function
.align  4
_vpaes_schedule_192_smear:
        movi    v1.16b, #0
        dup     v0.4s, v7.s[3]
        ins     v1.s[3], v6.s[2]        // vpshufd      $0x80,  %xmm6,  %xmm1   # d c 0 0 -> c 0 0 0
        ins     v0.s[0], v7.s[2]        // vpshufd      $0xFE,  %xmm7,  %xmm0   # b a _ _ -> b b b a
        eor     v6.16b, v6.16b, v1.16b  // vpxor        %xmm1,  %xmm6,  %xmm6   # -> c+d c 0 0
        eor     v1.16b, v1.16b, v1.16b  // vpxor        %xmm1,  %xmm1,  %xmm1
        eor     v6.16b, v6.16b, v0.16b  // vpxor        %xmm0,  %xmm6,  %xmm6   # -> b+c+d b+c b a
        mov     v0.16b, v6.16b          // vmovdqa      %xmm6,  %xmm0
        ins     v6.d[0], v1.d[0]        // vmovhlps     %xmm1,  %xmm6,  %xmm6   # clobber low side with zeros
        ret
.size   _vpaes_schedule_192_smear,.-_vpaes_schedule_192_smear

//
//  .aes_schedule_round
//
//  Runs one main round of the key schedule on %xmm0, %xmm7
//
//  Specifically, runs subbytes on the high dword of %xmm0
//  then rotates it by one byte and xors into the low dword of
//  %xmm7.
//
//  Adds rcon from low byte of %xmm8, then rotates %xmm8 for
//  next rcon.
//
//  Smears the dwords of %xmm7 by xoring the low into the
//  second low, result into third, result into highest.
//
//  Returns results in %xmm7 = %xmm0.
//  Clobbers %xmm1-%xmm4, %r11.
//
.type   _vpaes_schedule_round,%function
.align  4
_vpaes_schedule_round:
        // extract rcon from xmm8
        movi    v4.16b, #0                      // vpxor        %xmm4,  %xmm4,  %xmm4
        ext     v1.16b, v8.16b, v4.16b, #15     // vpalignr     $15,    %xmm8,  %xmm4,  %xmm1
        ext     v8.16b, v8.16b, v8.16b, #15     // vpalignr     $15,    %xmm8,  %xmm8,  %xmm8
        eor     v7.16b, v7.16b, v1.16b          // vpxor        %xmm1,  %xmm7,  %xmm7

        // rotate
        dup     v0.4s, v0.s[3]                  // vpshufd      $0xFF,  %xmm0,  %xmm0
        ext     v0.16b, v0.16b, v0.16b, #1      // vpalignr     $1,     %xmm0,  %xmm0,  %xmm0

        // fall through...

        // low round: same as high round, but no rotation and no rcon.
_vpaes_schedule_low_round:
        // smear xmm7
        ext     v1.16b, v4.16b, v7.16b, #12     // vpslldq      $4,     %xmm7,  %xmm1
        eor     v7.16b, v7.16b, v1.16b          // vpxor        %xmm1,  %xmm7,  %xmm7
        ext     v4.16b, v4.16b, v7.16b, #8      // vpslldq      $8,     %xmm7,  %xmm4

        // subbytes
        and     v1.16b, v0.16b, v17.16b         // vpand        %xmm9,  %xmm0,  %xmm1           # 0 = k
        ushr    v0.16b, v0.16b, #4              // vpsrlb       $4,     %xmm0,  %xmm0           # 1 = i
        eor     v7.16b, v7.16b, v4.16b          // vpxor        %xmm4,  %xmm7,  %xmm7
        tbl     v2.16b, {v19.16b}, v1.16b       // vpshufb      %xmm1,  %xmm11, %xmm2           # 2 = a/k
        eor     v1.16b, v1.16b, v0.16b          // vpxor        %xmm0,  %xmm1,  %xmm1           # 0 = j
        tbl     v3.16b, {v18.16b}, v0.16b       // vpshufb      %xmm0,  %xmm10, %xmm3           # 3 = 1/i
        eor     v3.16b, v3.16b, v2.16b          // vpxor        %xmm2,  %xmm3,  %xmm3           # 3 = iak = 1/i + a/k
        tbl     v4.16b, {v18.16b}, v1.16b       // vpshufb      %xmm1,  %xmm10, %xmm4           # 4 = 1/j
        eor     v7.16b, v7.16b, v16.16b         // vpxor        .Lk_s63(%rip),  %xmm7,  %xmm7
        tbl     v3.16b, {v18.16b}, v3.16b       // vpshufb      %xmm3,  %xmm10, %xmm3           # 2 = 1/iak
        eor     v4.16b, v4.16b, v2.16b          // vpxor        %xmm2,  %xmm4,  %xmm4           # 4 = jak = 1/j + a/k
        tbl     v2.16b, {v18.16b}, v4.16b       // vpshufb      %xmm4,  %xmm10, %xmm2           # 3 = 1/jak
        eor     v3.16b, v3.16b, v1.16b          // vpxor        %xmm1,  %xmm3,  %xmm3           # 2 = io
        eor     v2.16b, v2.16b, v0.16b          // vpxor        %xmm0,  %xmm2,  %xmm2           # 3 = jo
        tbl     v4.16b, {v23.16b}, v3.16b       // vpshufb      %xmm3,  %xmm13, %xmm4           # 4 = sbou
        tbl     v1.16b, {v22.16b}, v2.16b       // vpshufb      %xmm2,  %xmm12, %xmm1           # 0 = sb1t
        eor     v1.16b, v1.16b, v4.16b          // vpxor        %xmm4,  %xmm1,  %xmm1           # 0 = sbox output

        // add in smeared stuff
        eor     v0.16b, v1.16b, v7.16b          // vpxor        %xmm7,  %xmm1,  %xmm0
        eor     v7.16b, v1.16b, v7.16b          // vmovdqa      %xmm0,  %xmm7
        ret
.size   _vpaes_schedule_round,.-_vpaes_schedule_round

//
//  .aes_schedule_transform
//
//  Linear-transform %xmm0 according to tables at (%r11)
//
//  Requires that %xmm9 = 0x0F0F... as in preheat
//  Output in %xmm0
//  Clobbers %xmm1, %xmm2
//
.type   _vpaes_schedule_transform,%function
.align  4
_vpaes_schedule_transform:
        and     v1.16b, v0.16b, v17.16b         // vpand        %xmm9,  %xmm0,  %xmm1
        ushr    v0.16b, v0.16b, #4              // vpsrlb       $4,     %xmm0,  %xmm0
                                                // vmovdqa      (%r11), %xmm2   # lo
        tbl     v2.16b, {v20.16b}, v1.16b       // vpshufb      %xmm1,  %xmm2,  %xmm2
                                                // vmovdqa      16(%r11),       %xmm1 # hi
        tbl     v0.16b, {v21.16b}, v0.16b       // vpshufb      %xmm0,  %xmm1,  %xmm0
        eor     v0.16b, v0.16b, v2.16b          // vpxor        %xmm2,  %xmm0,  %xmm0
        ret
.size   _vpaes_schedule_transform,.-_vpaes_schedule_transform

//
//  .aes_schedule_mangle
//
//  Mangle xmm0 from (basis-transformed) standard version
//  to our version.
//
//  On encrypt,
//    xor with 0x63
//    multiply by circulant 0,1,1,1
//    apply shiftrows transform
//
//  On decrypt,
//    xor with 0x63
//    multiply by "inverse mixcolumns" circulant E,B,D,9
//    deskew
//    apply shiftrows transform
//
//
//  Writes out to (%rdx), and increments or decrements it
//  Keeps track of round number mod 4 in %r8
//  Preserves xmm0
//  Clobbers xmm1-xmm5
//
.type   _vpaes_schedule_mangle,%function
.align  4
_vpaes_schedule_mangle:
        mov     v4.16b, v0.16b                  // vmovdqa      %xmm0,  %xmm4   # save xmm0 for later
                                                // vmovdqa      .Lk_mc_forward(%rip),%xmm5
        cbnz    w3, .Lschedule_mangle_dec

        // encrypting
        eor     v4.16b, v0.16b, v16.16b         // vpxor        .Lk_s63(%rip),  %xmm0,  %xmm4
        add     x2, x2, #16                     // add  $16,    %rdx
        tbl     v4.16b, {v4.16b}, v9.16b        // vpshufb      %xmm5,  %xmm4,  %xmm4
        tbl     v1.16b, {v4.16b}, v9.16b        // vpshufb      %xmm5,  %xmm4,  %xmm1
        tbl     v3.16b, {v1.16b}, v9.16b        // vpshufb      %xmm5,  %xmm1,  %xmm3
        eor     v4.16b, v4.16b, v1.16b          // vpxor        %xmm1,  %xmm4,  %xmm4
        ld1     {v1.2d}, [x8]                   // vmovdqa      (%r8,%r10),     %xmm1
        eor     v3.16b, v3.16b, v4.16b          // vpxor        %xmm4,  %xmm3,  %xmm3

        b       .Lschedule_mangle_both
.align  4
.Lschedule_mangle_dec:
        // inverse mix columns
                                                // lea  .Lk_dksd(%rip),%r11
        ushr    v1.16b, v4.16b, #4              // vpsrlb       $4,     %xmm4,  %xmm1   # 1 = hi
        and     v4.16b, v4.16b, v17.16b         // vpand        %xmm9,  %xmm4,  %xmm4   # 4 = lo

                                                // vmovdqa      0x00(%r11),     %xmm2
        tbl     v2.16b, {v24.16b}, v4.16b       // vpshufb      %xmm4,  %xmm2,  %xmm2
                                                // vmovdqa      0x10(%r11),     %xmm3
        tbl     v3.16b, {v25.16b}, v1.16b       // vpshufb      %xmm1,  %xmm3,  %xmm3
        eor     v3.16b, v3.16b, v2.16b          // vpxor        %xmm2,  %xmm3,  %xmm3
        tbl     v3.16b, {v3.16b}, v9.16b        // vpshufb      %xmm5,  %xmm3,  %xmm3

                                                // vmovdqa      0x20(%r11),     %xmm2
        tbl     v2.16b, {v26.16b}, v4.16b       // vpshufb      %xmm4,  %xmm2,  %xmm2
        eor     v2.16b, v2.16b, v3.16b          // vpxor        %xmm3,  %xmm2,  %xmm2
                                                // vmovdqa      0x30(%r11),     %xmm3
        tbl     v3.16b, {v27.16b}, v1.16b       // vpshufb      %xmm1,  %xmm3,  %xmm3
        eor     v3.16b, v3.16b, v2.16b          // vpxor        %xmm2,  %xmm3,  %xmm3
        tbl     v3.16b, {v3.16b}, v9.16b        // vpshufb      %xmm5,  %xmm3,  %xmm3

                                                // vmovdqa      0x40(%r11),     %xmm2
        tbl     v2.16b, {v28.16b}, v4.16b       // vpshufb      %xmm4,  %xmm2,  %xmm2
        eor     v2.16b, v2.16b, v3.16b          // vpxor        %xmm3,  %xmm2,  %xmm2
                                                // vmovdqa      0x50(%r11),     %xmm3
        tbl     v3.16b, {v29.16b}, v1.16b       // vpshufb      %xmm1,  %xmm3,  %xmm3
        eor     v3.16b, v3.16b, v2.16b          // vpxor        %xmm2,  %xmm3,  %xmm3

                                                // vmovdqa      0x60(%r11),     %xmm2
        tbl     v2.16b, {v30.16b}, v4.16b       // vpshufb      %xmm4,  %xmm2,  %xmm2
        tbl     v3.16b, {v3.16b}, v9.16b        // vpshufb      %xmm5,  %xmm3,  %xmm3
                                                // vmovdqa      0x70(%r11),     %xmm4
        tbl     v4.16b, {v31.16b}, v1.16b       // vpshufb      %xmm1,  %xmm4,  %xmm4
        ld1     {v1.2d}, [x8]                   // vmovdqa      (%r8,%r10),     %xmm1
        eor     v2.16b, v2.16b, v3.16b          // vpxor        %xmm3,  %xmm2,  %xmm2
        eor     v3.16b, v4.16b, v2.16b          // vpxor        %xmm2,  %xmm4,  %xmm3

        sub     x2, x2, #16                     // add  $-16,   %rdx

.Lschedule_mangle_both:
        tbl     v3.16b, {v3.16b}, v1.16b        // vpshufb      %xmm1,  %xmm3,  %xmm3
        add     x8, x8, #64-16                  // add  $-16,   %r8
        and     x8, x8, #~(1<<6)                // and  $0x30,  %r8
        st1     {v3.2d}, [x2]                   // vmovdqu      %xmm3,  (%rdx)
        ret
.size   _vpaes_schedule_mangle,.-_vpaes_schedule_mangle

.globl  vpaes_set_encrypt_key
.type   vpaes_set_encrypt_key,%function
.align  4
vpaes_set_encrypt_key:
.inst   0xd503233f              // paciasp
        stp     x29,x30,[sp,#-16]!
        add     x29,sp,#0
        stp     d8,d9,[sp,#-16]!        // ABI spec says so

        lsr     w9, w1, #5              // shr  $5,%eax
        add     w9, w9, #5              // $5,%eax
        str     w9, [x2,#240]           // mov  %eax,240(%rdx)  # AES_KEY->rounds = nbits/32+5;

        mov     w3, #0          // mov  $0,%ecx
        mov     x8, #0x30               // mov  $0x30,%r8d
        bl      _vpaes_schedule_core
        eor     x0, x0, x0

        ldp     d8,d9,[sp],#16
        ldp     x29,x30,[sp],#16
.inst   0xd50323bf              // autiasp
        ret
.size   vpaes_set_encrypt_key,.-vpaes_set_encrypt_key

.globl  vpaes_set_decrypt_key
.type   vpaes_set_decrypt_key,%function
.align  4
vpaes_set_decrypt_key:
.inst   0xd503233f              // paciasp
        stp     x29,x30,[sp,#-16]!
        add     x29,sp,#0
        stp     d8,d9,[sp,#-16]!        // ABI spec says so

        lsr     w9, w1, #5              // shr  $5,%eax
        add     w9, w9, #5              // $5,%eax
        str     w9, [x2,#240]           // mov  %eax,240(%rdx)  # AES_KEY->rounds = nbits/32+5;
        lsl     w9, w9, #4              // shl  $4,%eax
        add     x2, x2, #16             // lea  16(%rdx,%rax),%rdx
        add     x2, x2, x9

        mov     w3, #1          // mov  $1,%ecx
        lsr     w8, w1, #1              // shr  $1,%r8d
        and     x8, x8, #32             // and  $32,%r8d
        eor     x8, x8, #32             // xor  $32,%r8d        # nbits==192?0:32
        bl      _vpaes_schedule_core

        ldp     d8,d9,[sp],#16
        ldp     x29,x30,[sp],#16
.inst   0xd50323bf              // autiasp
        ret
.size   vpaes_set_decrypt_key,.-vpaes_set_decrypt_key
.globl  vpaes_cbc_encrypt
.type   vpaes_cbc_encrypt,%function
.align  4
vpaes_cbc_encrypt:
        cbz     x2, .Lcbc_abort
        cmp     w5, #0                  // check direction
        b.eq    vpaes_cbc_decrypt

.inst   0xd503233f              // paciasp
        stp     x29,x30,[sp,#-16]!
        add     x29,sp,#0

        mov     x17, x2         // reassign
        mov     x2,  x3         // reassign

        ld1     {v0.16b}, [x4]  // load ivec
        bl      _vpaes_encrypt_preheat
        b       .Lcbc_enc_loop

.align  4
.Lcbc_enc_loop:
        ld1     {v7.16b}, [x0],#16      // load input
        eor     v7.16b, v7.16b, v0.16b  // xor with ivec
        bl      _vpaes_encrypt_core
        st1     {v0.16b}, [x1],#16      // save output
        subs    x17, x17, #16
        b.hi    .Lcbc_enc_loop

        st1     {v0.16b}, [x4]  // write ivec

        ldp     x29,x30,[sp],#16
.inst   0xd50323bf              // autiasp
.Lcbc_abort:
        ret
.size   vpaes_cbc_encrypt,.-vpaes_cbc_encrypt

.type   vpaes_cbc_decrypt,%function
.align  4
vpaes_cbc_decrypt:
.inst   0xd503233f              // paciasp
        stp     x29,x30,[sp,#-16]!
        add     x29,sp,#0
        stp     d8,d9,[sp,#-16]!        // ABI spec says so
        stp     d10,d11,[sp,#-16]!
        stp     d12,d13,[sp,#-16]!
        stp     d14,d15,[sp,#-16]!

        mov     x17, x2         // reassign
        mov     x2,  x3         // reassign
        ld1     {v6.16b}, [x4]  // load ivec
        bl      _vpaes_decrypt_preheat
        tst     x17, #16
        b.eq    .Lcbc_dec_loop2x

        ld1     {v7.16b}, [x0], #16     // load input
        bl      _vpaes_decrypt_core
        eor     v0.16b, v0.16b, v6.16b  // xor with ivec
        orr     v6.16b, v7.16b, v7.16b  // next ivec value
        st1     {v0.16b}, [x1], #16
        subs    x17, x17, #16
        b.ls    .Lcbc_dec_done

.align  4
.Lcbc_dec_loop2x:
        ld1     {v14.16b,v15.16b}, [x0], #32
        bl      _vpaes_decrypt_2x
        eor     v0.16b, v0.16b, v6.16b  // xor with ivec
        eor     v1.16b, v1.16b, v14.16b
        orr     v6.16b, v15.16b, v15.16b
        st1     {v0.16b,v1.16b}, [x1], #32
        subs    x17, x17, #32
        b.hi    .Lcbc_dec_loop2x

.Lcbc_dec_done:
        st1     {v6.16b}, [x4]

        ldp     d14,d15,[sp],#16
        ldp     d12,d13,[sp],#16
        ldp     d10,d11,[sp],#16
        ldp     d8,d9,[sp],#16
        ldp     x29,x30,[sp],#16
.inst   0xd50323bf              // autiasp
        ret
.size   vpaes_cbc_decrypt,.-vpaes_cbc_decrypt
.globl  vpaes_ecb_encrypt
.type   vpaes_ecb_encrypt,%function
.align  4
vpaes_ecb_encrypt:
.inst   0xd503233f              // paciasp
        stp     x29,x30,[sp,#-16]!
        add     x29,sp,#0
        stp     d8,d9,[sp,#-16]!        // ABI spec says so
        stp     d10,d11,[sp,#-16]!
        stp     d12,d13,[sp,#-16]!
        stp     d14,d15,[sp,#-16]!

        mov     x17, x2
        mov     x2,  x3
        bl      _vpaes_encrypt_preheat
        tst     x17, #16
        b.eq    .Lecb_enc_loop

        ld1     {v7.16b}, [x0],#16
        bl      _vpaes_encrypt_core
        st1     {v0.16b}, [x1],#16
        subs    x17, x17, #16
        b.ls    .Lecb_enc_done

.align  4
.Lecb_enc_loop:
        ld1     {v14.16b,v15.16b}, [x0], #32
        bl      _vpaes_encrypt_2x
        st1     {v0.16b,v1.16b}, [x1], #32
        subs    x17, x17, #32
        b.hi    .Lecb_enc_loop

.Lecb_enc_done:
        ldp     d14,d15,[sp],#16
        ldp     d12,d13,[sp],#16
        ldp     d10,d11,[sp],#16
        ldp     d8,d9,[sp],#16
        ldp     x29,x30,[sp],#16
.inst   0xd50323bf              // autiasp
        ret
.size   vpaes_ecb_encrypt,.-vpaes_ecb_encrypt

.globl  vpaes_ecb_decrypt
.type   vpaes_ecb_decrypt,%function
.align  4
vpaes_ecb_decrypt:
.inst   0xd503233f              // paciasp
        stp     x29,x30,[sp,#-16]!
        add     x29,sp,#0
        stp     d8,d9,[sp,#-16]!        // ABI spec says so
        stp     d10,d11,[sp,#-16]!
        stp     d12,d13,[sp,#-16]!
        stp     d14,d15,[sp,#-16]!

        mov     x17, x2
        mov     x2,  x3
        bl      _vpaes_decrypt_preheat
        tst     x17, #16
        b.eq    .Lecb_dec_loop

        ld1     {v7.16b}, [x0],#16
        bl      _vpaes_encrypt_core
        st1     {v0.16b}, [x1],#16
        subs    x17, x17, #16
        b.ls    .Lecb_dec_done

.align  4
.Lecb_dec_loop:
        ld1     {v14.16b,v15.16b}, [x0], #32
        bl      _vpaes_decrypt_2x
        st1     {v0.16b,v1.16b}, [x1], #32
        subs    x17, x17, #32
        b.hi    .Lecb_dec_loop

.Lecb_dec_done:
        ldp     d14,d15,[sp],#16
        ldp     d12,d13,[sp],#16
        ldp     d10,d11,[sp],#16
        ldp     d8,d9,[sp],#16
        ldp     x29,x30,[sp],#16
.inst   0xd50323bf              // autiasp
        ret
.size   vpaes_ecb_decrypt,.-vpaes_ecb_decrypt
