Internet Security Cryptographic Principles, Algorithms and Protocols - Chapter 1 pptx

... field has the value of FF (11 11 111 1). • Control field: This field has the value of 03(0000 0 011 ). • Protocol field: This is a two-byte field whose value is 00 21( 0000 0000 0 010 00 01) for TCP/IP. • Data ... in Chapter 2. 4 INTERNET SECURITY • Flag field: Each frame starts with a one-byte flag whose value is 7E( 011 1 11 10). The flag is used for synchronisation at the bit level betwee...

Ngày tải lên: 09/08/2014, 06:23

... Bridges 6 1. 2.4 Routers 7 1. 2.5 Gateways 8 1. 3 The OSI Model 8 1. 4 TCP/IP Model 12 1. 4 .1 Network Access Layer 13 1. 4.2 Internet Layer 13 1. 4.3 Transport Layer 13 1. 4.4 Application Layer 13 2 TCP/IP ... Firewall (Dual-homed Bastion Host) 3 51 10.4.3 Screened Subnet Firewall 352 11 SET for E-commerce Transactions 355 11 .1 Business Requirements for SET 355 11 .2 S...

Ngày tải lên: 09/08/2014, 06:23

... 1/ 8 11 0 Reserved 1/ 8 11 10 Reserved 1/ 16 11 11 0 Reserved 1/ 32 11 11 10 Reserved 1/ 64 11 11 110 Reserved 1/ 128 11 11 111 0 0 Reserved 1/ 512 11 11 111 0 10 Link local addresses 1/ 1024 11 11 111 0 11 Site local ... : 10 0 011 01 000 011 10 0000 010 1 00 010 111 Mask : 11 111 111 11 111 111 00000000 00000000 Network address : 10 0 011 01 000 011 10 0000000...

Ngày tải lên: 09/08/2014, 06:23

... 14 112 124 713 15 015 103986 2 4 211 110 137 815 912 563 014 3 11 812 711 4 213 615 0 910 453 0 12 110 159268 013 3 414 7 511 S 6 1 1 015 42 712 95 611 314 011 38 2 914 1552 812 370 410 113 116 3 43 212 9 515 1 011 1 417 60 813 0 411 214 150 813 312 97 510 61 S 7 1 ... 13 649 815 3 011 1 212 510 147 3 11 013 06987 415 14 311 5 212 0 713 14306 910 128 511 12 415 S 4 1 13 811...

Ngày tải lên: 09/08/2014, 06:23

... First-word block process (M[0], T [1] , s = 7) Using Table 4.5, F(b, c, d) is computed as shown below: b: 11 10 11 11 110 0 11 01 1 010 10 11 1000 10 01 c: 10 01 1000 10 11 1 010 11 01 110 0 11 11 111 0 d: 00 01 ... AND HMAC 15 1 Table 4.7 Truth table of four nonlinear functions for SHA -1 BCDf 0 ,1, ,19 f 20, 21, ,39 f 40, 41, ,59 f 60, 61, ,79 0000000 0 011 1 01 010...

Ngày tải lên: 09/08/2014, 06:23

... character Blank00E05 J 10 O15 T 20Y25 A 01 F 06 K 11 P 16 U 21 Z 26 B 02G07 L 12 Q17V22 C 03 H 08 M 13 R 18 W 23 D 04 I 09 N 14 S 19 X 24 19 0 INTERNET SECURITY Example 5 .15 Let p = 17 . Choose a = 1 and b = 5 ... decryption key d = 10 19 such that: m ≡ c d (mod n) ≡ 15 70 10 19 (mod 3337) m = (15 70) 512 × (15 70) 256 × (15 70) 12 8 × (15 70) 64 × (15 70) 32 × (15...

Ngày tải lên: 09/08/2014, 06:23

... RSA and DSA are the most popular signature algorithms used in the Internet. They combine RSA with either MD5 or SHA -1 one-way hash functions; DSA is used in conjunction with the SHA -1 one-way ... in accordance with PCA and PAA policies. The CA must ensure that all key parameters Root CA CA CA Gateway 1 Gateway 2 Gateway 3 U 11 U12 U13 U14 U1 U2 U3 U4 Root CA CA CA CA U8 U9 U7 U5...

Ngày tải lên: 09/08/2014, 06:23

... bits (IV) 0 IV IV K′ = 512 bits M 0 M 1 M L 1 M bb b b = 512 bits K′ 16 0 bits (SHA -1 ) 12 8 bits (MD5) 16 0 bits (SHA -1 ) 12 8 bits (MD5) 12 8 bits (MD5) h= 16 0 bits (SHA -1 ) 16 0 bits (SHA -1 ) 12 8 bits (MD5) 16 0 bits ... b M M|| || K' = 512 bits b = 512 bits b = 512 bits Ω i Ω i M 0 M 1 M L 1 b = 512 bits b = 512 bits b = 512 bits h = 16 0 bits (SHA -1 ) 12 8...

Ngày tải lên: 09/08/2014, 06:23

... TLSV1 2 91 premaster_secret ClientHello.random ServerHello.random 1 2 3 1 2 3 ‘A’ 1 2 3 ‘BB’ 1 2 3 ‘CCC’ 1 2 3 SHA -1 SHA -1 SHA -1 MD5 MD5 MD5 H 1 1 H 2 1 H 3 1 master_secret (48 bytes) H 3 H 2 H 1 Figure ... b M M|| || K' = 512 bits b = 512 bits b = 512 bits Ω i Ω i M 0 M 1 M L 1 b = 512 bits b = 512 bits b = 512 bits h = 16 0 bits (SHA -1 ) 12 8 bits (MD5...

Ngày tải lên: 09/08/2014, 06:23

... radix-64 alphabet. 1. Input raw text: 0x 15 d0 2f 9e b7 4c 8-bit octets: 00 010 1 01 110 10000 0 010 111 1 10 011 110 10 110 111 010 011 00 6-bit index: 00 010 1 011 1 01 000000 10 111 1 10 011 1 10 1 011 011 1 01 0 011 00 Decimal: ... 010 011 01 2. Input raw text: 0x 15 d0 2f 9e b7 8-bit octets: 00 010 1 01 110 10000 0 010 111 1 10 011 110 10 110 111 6-bit index: 00 010 1 011...

Ngày tải lên: 09/08/2014, 06:23