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11/32201A.B.C.D.ABC25af5A.B.C.D.3A.B.C.D.4AKAKABKBKBABMMM=KBKAMBA.KBKAMB.KAKAMC.KAKBMD.KBKAM5HashA.B.C.D.6A.B.C.D.7InternetA.InternetB.C.D.8PKIA.B.C.D.29H128(128)Hk0.5kA2128B264C232D225610Bell-LaPadulaBibaBell-LaPadulaBell-LaPadulaABCD1201ISO7498-2ISO7498-2234.DES6456RSA567NAT88241Ek=2034143210NowwearehavingatestL=55x3WnewohaaergvanittxseDk=1240343210L=55=1202DESSSS3(101101),SDES10110111ii=(11)2=(3)101011014jj=(0110)2=(6)10S33681000S643963657(963,657)963657963=1*657+306657=2*306+45306=6*45+3645=1*36+936=4*9+0(963,657)=9r(n-1),r(n-2),,r(3),r(2)9=45-1*36=45-306-6*45=7*45-306=7*657-2*306-306=7*657-3*306=7*657-3*963-657=22*657-15*9639=22*657-15*9637211S,AASA||B||RaSA:S||Ss(S||A||Ra||Kb)Ss()SSBKbSABBAS4ASA||C||RaSSA:S||Ss(S||A||Ra||Kc)KcAAKbKcAKb2(1)()(2)MD53(1)(2)(3)(4)(5)(6)(7)151P2DR25()P2DR2PolicyProtectionDetectionResponseRestore1P2DR2P2DR2PtDtRtPt(Dt+Rt)11EtEt=Dt+RtPt=02620WebServerPtDtRt1P2DR2P2DR252P2DR22P2DR2IPTCP/IPICMPTCPUDP,SaSpiS=Sa+Spi.72/3VPN1.2BABCD3DABCD4DA***B****CD5BABCDDOS6PKIBACABSSLCRADCR7DA***B***C**D8AABARPCTCPDDDOS9windowsCATasklistBNetsatCTaskkillDNetshare10DABCD11.12DOS\DDOS\DRDOS13AABShellcodeCD14AABCD15DipAIPBIPCIPDIP17ICMPDABCDprot18DABCD812DESSSDES6bit4bit3kerberos4ABBA1AliceBobAliceBobAliceBobBobAliceAlice(2)AliceBobAliceBobBobAlice(2)AliceBob9AliceBobBobAliceAliceBobBobBobAlice5ScreeningRouterScreeningHostDualHomedGatewayBastionHostScreenedSubnet6103/31DABCD2BABCDPlayFair3CABCD4DESCDESADESK6456PC-156BiiCiDPC-2iKi52000102NISTBAMARSBRijndaelCTwofishDBluefish6A11ABCD7HashCAMD4BSHA-1CwhirlpoolDMD58CABCD9DABCD10AABCD1212012345DES64645661976DiffeHellman7Elgamal812DES3DESCBC4510201X8+X4+X3+X+1GF2883H2RSAp=7,q=17,e=13,m=191084013111111Playfair1112DES640.5646416K1K2K16164IP0.5L0R0X=L0R0=IP(x)160.5iKifRi-1Ri-1E480.5Ri-148Ki0.5Ri-1S320.5Ri-1P0.5Ri-1Li-1iRi=Li-1f(Ri-1,Ki)0.5Li=Ri-10.516X=R16L161IP-10.5DES1314CBCDESCBC2DESCBC2DESDES22411111111515HashABMAMHashM2APraMEPRa(Hash(M))MM||EPRa(Hash(M)),2BAPuaHash(M)=DPUa(EPRa(Hash(M)))2BMHash(M)A,A2183H1000001120.5100000112X7+X+10.52QXA1XA2XA3XB1(X)B2XB3(X)10X8+X4+X3+X+101X7+X+1X01X7+X+11XX4+X3+X2+1X3+X2+11XX4+X3+X2+1X3+X2+1X4+X3+X+1X16X3+X2+XX3+X2+1X4+X3+X+1XX6+X2+X+1X71X7+X+1X7X71000000020.510000000280H0.583H80H3n=pq=717=119(n)=p-1q-1=616=960.5ededmod(n)=1,d=e-1mod(n),d1QA1A2A3B1B2B310960113701131-7521-75-21531-21533-22213-222-5371d=37e,n=(13,119),d=370.5m=1910RSAc=memodn=1913mod119e=13110122kbid31((12mod119)19)mod119=1921((192mod119)19)mod119=7610(76)2mod119=6401((64)2mod119)19)mod119=1171711710