000001d0  42 9f 62 81 65 54 22 cb  4c a5 95 1b 2a 49 18 2f  |B.b.eT".L...*I./|
000001e0  fc 54 b4 38 27 3f cf ab  b0 97 3e 17 8b ae 98 a0  |.T.8'?....>.....|
000001f0  50 76 d6 79 39 e8 25 bc  3b d9 5a a4 a8 5e 08 6a  |Pv.y9.%.;.Z..^.j|
00000200  1c 48 b1 11 f0 d9 b9 48  39 e1 23 db 41 8c bf bd  |.H.....H9.#.A...|
00000210  20 27 7b 0c 89 10 1f b0  ae 70 18 9a 7f f2 b4 1d  | '{......p......|

>>> Flow 9 (client to server)
00000000  16 03 03 02 69 8a dc ce  d1 c0 85 30 95 6c da 57  |....i......0.l.W|
00000010  23 05 39 c1 4c 20 08 25  a2 96 f1 55 a1 77 3b 42  |#.9.L .%...U.w;B|
00000020  9f 3d 69 9b 56 49 b4 94  8a 3c d5 85 43 f1 b4 4b  |.=i.VI...<..C..K|
00000030  cd e0 67 95 83 34 90 89  81 f0 18 87 28 c0 42 88  |..g..4......(.B.|
00000040  b0 1c d1 cc 0a f0 bb 67  91 55 0b e4 ed 22 52 09  |.......g.U..."R.|

00000050  2e 00 2b 00 02 03 04 00  33 00 24 00 1d 00 20 3b  |..+.....3.$... ;|
00000060  6b 2a e6 c2 7e b6 59 68  e4 e3 f2 f3 14 e5 72 bc  |k*..~.Yh......r.|
00000070  c9 61 b4 b0 0a c6 41 0d  a9 8e d9 9b 7d 2a 11 14  |.a....A.....}*..|
00000080  03 03 00 01 01 17 03 03  00 17 43 af 38 b9 56 06  |..........C.8.V.|
00000090  2d 10 e3 e5 1d 1b 1e a9  5f 90 ca 0d a9 52 33 86  |-......._....R3.|

99 57 88 b5 e8 72 c2 0b b1 # p's CRT exponent dP: 02 6e 7e 28 01 0e cf 24 12 d9 52 3a d7 04 64 7f b4 fe 9b 66 b1 a6 81 58 1b 0e 15 55 3a 89 b1 54 28 28 89 8f 27 24 3e ba b4 5f f5 e1 ac b9 d4 df 1b 05 1f bc 62 82 4d bc 6f 6c 93 26 1a 78 b9 a7 59 # q's CRT exponent dQ: 01 2d dc c8 6e f6 55 99 8c 39 dd ae 11 71 86 69 e5 e4 6c f1 49 5b 07 e1 3b 10 14 cd 69 b3 af 68 30 4a d2 a6 b6 43 21 e7 8b f3 bb ca 9b b4 94 e9 1d 45 17 17 e2 d9 75 64 c6 54 94 65 d0 20 5c f4 21 # CRT coefficient qInv: 01 06 00 c4 c2 18...

00000030  3c 5d d9 67 05 4c 45 77  d0 d9 46 29 ed 25 fd 7d  |<].g.LEw..F).%.}|
00000040  b4 ef 39 d2 ee 3b a3 88  85 c5 78 9a cc a8 00 00  |..9..;....x.....|
00000050  11 ff 01 00 01 00 00 0b  00 04 03 00 01 02 00 17  |................|
00000060  00 00 16 03 03 02 59 0b  00 02 55 00 02 52 00 02  |......Y...U..R..|
00000070  4f 30 82 02 4b 30 82 01  b4 a0 03 02 01 02 02 09  |O0..K0..........|

000002d0  c7 51 5e a0 fb 55 5a 01  34 cc d1 a6 22 df d6 00  |.Q^..UZ.4..."...|
000002e0  f5 73 e0 9e b8 9d 2a a9  49 3a 99 ba 17 00 80 14  |.s....*.I:......|
000002f0  95 47 77 a1 48 b4 e7 ba  6a e8 0e 4e ee 55 25 f5  |.Gw.H...j..N.U%.|
00000300  ea 82 65 b4 3f db a2 94  03 cc d3 6c 4a e6 cf 57  |..e.?......lJ..W|
00000310  25 4c 79 b8 fb ab dd 1f  68 e4 55 87 b1 46 12 30  |%Ly.....h.U..F.0|

00000030  6f f4 cb 8a 13 74 a2 ee  b7 27 69 b4 41 c0 90 68  |o....t...'i.A..h|
00000040  bc 02 69 e1 c6 48 4f 39  36 30 25 ca 4c 17 ce 83  |..i..HO960%.L...|
00000050  9e 08 56 e3 05 49 93 9e  2e c4 fb e6 c8 01 f1 0f  |..V..I..........|
00000060  c5 70 0f 08 83 48 e9 48  ef 6e 50 8b 05 7e e5 84  |.p...H.H.nP..~..|
00000070  25 fa 55 c7 ae 31 02 27  00 ef 3f 98 86 20 12 89  |%.U..1.'..?.. ..|

00000030  fd aa 10 47 00 9a 5d ad  4c d8 90 f1 cf 13 10 73  |...G..].L......s|
00000040  31 f1 df 22 f3 42 58 b0  10 25 43 eb cc a8 00 01  |1..".BX..%C.....|
00000050  7e 00 12 01 69 01 67 00  75 00 a4 b9 09 90 b4 18  |~...i.g.u.......|
00000060  58 14 87 bb 13 a2 cc 67  70 0a 3c 35 98 04 f9 1b  |X......gp.<5....|
00000070  df b8 e3 77 cd 0e c8 0d  dc 10 00 00 01 47 97 99  |...w.........G..|

00000010  00 00 00 00 00 00 00 00  00 00 00 63 1a 77 66 2a  |...........c.wf*|
00000020  49 3a b2 17 83 74 e1 d9  70 96 de 01 84 09 f4 88  |I:...t..p.......|
00000030  c3 e7 3b 65 11 6f 13 32  b8 b4 f4 41 ca 6a d6 d7  |..;e.o.2...A.j..|
00000040  51 a3 a1 f0 2d 5b b4 55  29 f9 d3 17 03 03 00 40  |Q...-[.U)......@|
00000050  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|

func permuteInitialBlock(block uint64) uint64 {
	// block = b7 b6 b5 b4 b3 b2 b1 b0 (8 bytes)
	b1 := block >> 48
	b2 := block << 48
	block ^= b1 ^ b2 ^ b1<<48 ^ b2>>48

	// block = b1 b0 b5 b4 b3 b2 b7 b6
	b1 = block >> 32 & 0xff00ff
	b2 = (block & 0xff00ff00)
	block ^= b1<<32 ^ b2 ^ b1<<8 ^ b2<<24 // exchange b0 b4 with b3 b7

	// block is now b1 b3 b5 b7 b0 b2 b4 b6, the permutation:
	//                  ...  8