Основы защиты информации в МТС

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<p> , , ; ; , , ; ; , ; , ; , , , ; , , ; ; , , ; , ; , , , , , , . ; ; ; , ; , ; - , , ; . ; ; . : ; , ; : , , ; ; , . - () - --( - -, -..) -- 1.1 () 1.2 , 1.3 , , 1.4 1.5 , 1.6 1.7 , ( ) 1.8 , ( ) 1.9 , ( ) 1.10 , 1.10 , - 10,01,00,10,01St 1 St 2 St 3 St 4 St 5 St 6 St 7 St 8 St 9 1.11 St1 - , St2 - , St3 - , St4 - ( ) St5 - , St6 - AMPS(DAMPS), St7 - NMT, St8 - GSM, St9 - ( ). , , , ; ( , ) . ; ; ; ; , ; . , , . , . . , , ( ) 1.11 . . . . - .1.1.2.1 (D-)32-64/.2.1- -.2.1- -.2.2 .2.2 .2 ( )1,2-4,8/.2.2.2 1.13 1 2 ( ) 1.14 1.15 ()S1N0N1S1 1 2 1.16 w sh k kh h ) 1 ( + =E() | | df f G K hdffs s} = ln( ) | | dy y W K hyyw w} =maxminln N N N =1 (k=0,5) (k=0,1) - 87,8681 6-76,576,57107 - 32,572,43105 54,714,58104 -22,132,14109 11,281,43109 6-76,576,431011 44,284,41109 -N f N 2F f.0 = =2F f.0 =| | = = A A =10(k)! / ) sinc( ) )( ( f ) ( fNk nNkk nN t nN t osinc(o)=sin(o)/o, o=t(t-nNA)/NA,) N N (i f (i) f (i) f0 k 1 k c k + + + = 1.17 ) N N (i S (i) S (i) S0 k 2 k c k + + + = 1.18 1.19 : ( ), ( ), . . . ))() () ()() 1.20 Fr1 2 2 2 2 Fr1 Fr2B(f)f300 3400 3700B(f)f300 3400 3700Fr2 B(f)f300 3400 3700Fr1 1.21 213123213 312 1-3 - ;1-3, 1-3 - B(f)f300 34002 3 1 1 2 3B(f)f300 3400 1 2 3B(f)f300 3400 1.22 -0t t01 2 3 4 6 5 4 1 5 3 6 2 1.23 1.24 -t = 0t = 0 t1 2 3 4 510 9 8 7 611 12 13 14 1520 19 18 17 165 13310987201824116121411 1719615t 1.25 1.26 X(t) X(t) Y(t)=Fk[X(t)] X(t)=Zk(Fk[X(t)])k kY(t) = Fk[ X(t)], X(t) = Zk[Y(t)] = Zk{Fk[X(t)]}, 1.27 ()() 4,8...19,2 4,8...19,2 )()() 1,2...4,8 1,2...4,8 ) 1.28 - 1.29 A &lt; A A &gt; AA &lt; &lt; A =+) () () ( ) () (3 1n f n f n f n fn fkkk kk 1.30 1.31 DES RSADESRSA 56 300-600 - , . . . . . , . . I, U, -0,6 0,6 1.32 1.33 11 1.34 L2L1VD1...VD412 1.35 1.36 , , , )1 2 34 5 67 8 9* 8 # 1 2 34 5 67 8 9* 8 # ) 1.37 () () / 5 , 0 5 , 03 xt t V L = =( ) ( ) x xU U p p p p = + =0 0 1.38 1.39 1.40 1.41 1.42 1.43 * R* 1.44 , 1.45 1.46 2.1 - - () - () (), - - ( ) - (-), - - - - - -, - - - - - (), - (-, ,) - - - / - - - - - - () 2.2 - 2.3 SNP = [A(n,p)cos(n,p);A(n,p)sin(n,p)]NP 2.4 ) ) (2) (cos( 2 ) (0 0 000) (2) (00 0202 e o t ooo+ +=t tt te e A t et tt tff - (, Pulse-Code Modulation PCM); ( . Voice Coder); ( . Linear Predictor). G.721 ( 32 /); - G.722 ( 16 000 ); - G.723 ( 24 /); - Creative ADPCM (4, 2,6 2 ); - IMA/DVI ADPCM (4, 3 2 ); - Microsoft ADPCM. ; . , ( ) - , , ( ), ( ); , . - LPC (Linear Predictive Coding); - MPELP (Multi Pulse Excidet Linear Predictive) MPLPC (Multi Pulse Excited LPC); - RELP (Residual Excited Linear Predictive); - ELP (Code Excited Linear Predictive). CELP - 1015 (LPC-10E, 2400 /); - 1016 (E-CELP, 4800 /). - G.728 LD-CELP (16 /); - G.729 CS-ACELP (8 /). (64/c)(32-56 /)(16-32 /)----MPELP LPC CELP RELPMicrosoftADPCMIMA/DVIADPCM6,721 MKKTT(32 /)6,722 MKKTTfg=166,723 MKKTT(24 /)Creative ADPCM42,6:2 /. -LPC-10E2400 /E-CELP4800 /LD-CELP16 /CS-ACELP7 / 2.5 + - N 2.6 Z 1+) N N (i f (i) f (i) f0 k 1 k c k + + + = 2.7 2.8 ) ( S j ) ( Sc =.j / ) ( S ) ( Sc=.. 2.9 12i c i c/N ) j ( S ) ( G =12icic/N ) j ( S ) ( G. .=) ( G ) ( G : Hc ce e e.) ( G ) ( G : Lcce e e.{ } |.|</p> <p>\|.) ( G ) ( G ) ( G = ) ( Gi c1 - N/21 = iici c i c0 M ) ( G M1Hic= =((</p> <p>)` .2 D ) ( G D0Hic= =((</p> <p>)` .( ) { } { } 2 2F 1 D M 2F 1 P0 1 1 = = (n) G(n) G (n) G(n) G(n) G (n) G1 K0 n1 K0 n1 K0 nc1 K0 nc.c&gt;</p>

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