Encryption/decryption of program data but not PSI data

MPEG
Tgonsporf
tream /12A
1 iso
Seed
Generator
l 562 564 S66 568 570
R d # 4 PK --P K
Guenneazwtor —-’ MUX 4 PK __> Mux Expoggion
Figure 3

728 B"—> KEYP RAM '
K '
|n,‘§Zr T>{_|r@_|<_e7]—> 32 X 44 X N

I4%8 Expvn e ey 128 Bi? Input , AES 128 an Dcfa to Encrypf Encryption > Output Encrypfed Data

Figure 4

22 i&z_¢_°"_':<fl—> e Q—~ 3 Modification 1 K ‘ Keys MUX —’ Enciypt —> 80 599 M d'f‘ MZs;Jg°£——> Memory sFe|e:-.; S82 v 590 $86 5100 5104 ixe 3 Fixed K —>K K —> Message 3 M eYs eys A Seig<r;Yen1 ’ ie;;‘$£%e -—H MUX _’ Exp|E;yder 3 F’ d * e ""> Ke)g“1(B Generator Hastisvalues l_> 2 ‘K8 <84 510 3 Fixgtk K R Fixed Check 3 Hgsyh Values I m Sum a20 _ Flgure 5

588 92 594
5
Madi{;c;tion KM
582 92 86
1
F d KA .| Message
I22; LUT Segment Keys
84
922
- K
F|'(xee;l B Latch
Table 0 Table 1 Table 2 Table 3
KM KA Kn K0 KM KA KB K1 KM KA KB K2 KM KA KB K3
0 O 0 0 0 O 0 0 O 0 0 O 0 0 0
0 0 l 0 0 0 1 T 0 0 ‘I 1 0 0 1 O
0 ‘I 0 l O ‘I 0 l 0 1 0 1 0 1 0 l
0 1 l l 0 ‘l 1 0 O ‘I ‘I 0 O "I ‘I ‘I
‘I 0 O 0 1 0 0 1 l 0 0 1 1 0 0 0
l 0 ‘I 1 ‘I 0 l 0 1 O l 'l 'l 0 ‘I 0
l 1 0 l 1 ‘I O 0 1 l 0 0 1 l O 1
1 1 1 0 ‘I l l 1 1 ‘I l 0 ‘I 1 l ‘l
Figure6'

II JO 9 was ZIOZ ‘LZ ‘WW meted ‘Sn

ZH 898‘VVI‘8 Sfl

Byte # Function Description
0-3 System Control Control
4-12 Fixed Ke & Address Pointers
Hash Va ues
13-23 TBD
Figure 8
Byte #0-3
Bits Action Function
0,1 XX None Copy Control
XX No more copies
XX Copy once
XX Display only
2-7 XXXXXX Reserved
8-‘I1 XXXX Table # Designate Table
12-15 XXXX Control Key Rotation

I iv I LControl/MM] [PK/MK/MM I LPK/MK/MM] 106 Hash A/A‘ Q V 5112 I Key A/A’ I—>I AES I 108 Q 15114 I Key B/B‘ I—+I AES I 110 Hash c/c' Q 1 15116 LKey C/C‘ I—>I AES I i Y v 1 7‘ I PK / MK / M I 18 Figure 11 64 Bit 64 Bit 64 Bit 64 Bit . |.v. Control PK/MK MSB PK/MK LSB F lgure 12 Control Byte Bits 4,5,6 = 5 oioixxxx Bit 7 = 0 / Modifier 1” Message Segment with Message Modification Keys and Program ID Control Byte Bits 4,5,6 = 5 1 ioixxxx Bit 7 = 1 / Modifier 2”‘ Message Segment with . Message New Program Keys F lg u re 13