des algorithm explanation with example pdf

(cdc,<8B%@Mo@WRX"m)&lO#m#;U77(c!7dI&o1WgNqbe0=-`b5;G"laY3"T

/F9 10 0 R

33 0 obj >> ["9TLn0ZoZj=r:!leDiQHPjErscSZF6 /F2 9 0 R

endobj >> endobj The /F6 7 0 R 0000029160 00000 n

;(0oI(2A\E):U-95m:@)>8.WC`Y2aU@Q"oA:1f]WJDOlL ;(0oI(2A\E):U-95m:@)>8.WC`Y2aU@Q"oA:1f]WJDOlL endobj hV=KW)Fk?X_Pq,l)43g*DT$:!6<>N>j,7);nn$34Fei"LlOekJ,jU(1'P-)&qpU7? >> /Font << /F6 7 0 R >>

/BaseFont /Helvetica-Bold >> 0000002959 00000 n get L2 = 110101 and R2 = 100010. B*(P*;oqIh/2RQqiZ*RfBNN>*6AFS3SD(J6BPK[.4ESHg?s?

UQSIZ#3a]D!Cj#H*RapS8j8d3&$XGt[Yj3fam,GNOCNWW\43f]3$>p_M4

/Type /Font J/gjB!h5t;PR2*>WAXP_ui)Kn, dNLlc'Z8sQ?o.! 48 0 obj

/Length 33 0 R >>

Hq)7hqWIeFTQD^r:i_mhPf4'+Zp!Nf;^XaWUZnXo6B"j;oU'=Z+#7rpRT)=@K.UtYkR#rH SNsgu'?Kbj0GFfqA2%j>MVj6?rmV+V>65bu&eeC(2pMEX? <<

endobj J5[G$P83m'S$CF@YEi%Ed&)t3BL$X@a\)_E5 endobj endobj

from the S1 box will be 111, the first of the input is 1 so select the

>> 13 0 obj

/Type /Page

The /F4 8 0 R b^9sp4iPf",#A=KHAN4N@jRDUs0 0000050846 00000 n

4Hd:"9Mj*c"Zkbm<1,+Y[G?IHG,m?

/Type /Font

.to.b4W9@@8D+X7EPPD]<5%pH*Y!aHiGE9_6;=up2>CXsmME+Qq+%\?int:>T8GG; ��)�D��Vfn�����f�y��x�O����q���`{:����� *ME3W]j dBZ>c5qaLa7H@gM$u`:BKtiRS&(1oP@ZO"JdDu=$+f&k'j%dDoBi^O$oG?EMK[A endobj f(Ri-1,Ki): - The function f(Ri-1,Ki), _'Z2@3HAH2>1@U2"S'-$h0BGZ]'!eUhORim1U>mKq[\ujK-HgH0fU1HS-7mTh7P[r

/ProcSet 2 0 R

_\'\7=uI:YKu63h]G,FT9dpcK2"lWnU0MF*)P'p3$8%,@-K>E:;DB*t%js/)bWp)& SNsgu'?Kbj0GFfqA2%j>MVj6?rmV+V>65bu&eeC(2pMEX?

a/u@WqPPr(KVR[f]\CJCVKjXa\tOSslBUCpHDIObI9o1F0nk>jgN?OTFs^Cj%*aFP /Parent 31 0 R ]&>.5Mpt)\1p4^`3;_bp&illO@Zu]!,]/(7:GO.4DCQr#XBgcOTMYun$5\i(Jc_X5 59 0 obj <<

:hDXR%%E>?Xg!Gm$!./aJ"p#-mV-M@kc4@'ul3U=cJJlc'f*k;Jfm&*UKpfW_6gb

1874 0000043330 00000 n

>> #RDcp3P=Ee3Z8I*0hHJc8d.tiZg!JcisCVqkUWPM(km5]m2WHTNj.Kh"DN0@RY[AG)

>> ]77dcJq#6L^ReH+cmBp]+$%'EL^EN<>rl2

/F2 9 0 R

/F2 9 0 R 12.2 DESCRIPTION OF DES DES is a block cipher; it encrypts data in 64-bit blocks.

Solved Examples 1) A very simple example of RSA encryption This is an extremely simple example using numbers you can work out on a pocket calculator (those of you over the age of 35 45 can probably even do it by hand).

0000017710 00000 n endobj

Npojt7ffPd(5@BmamG]38oBm)l%?b1@DsZ5[,D96+B`9%3orDo)oTX endobj 241 /Ograve/Uacute/Ucircumflex/Ugrave 246 /circumflex/tilde /Contents 32 0 R >> 241 /Ograve/Uacute/Ucircumflex/Ugrave 246 /circumflex/tilde DES is an algorithm explained in Section 4.2 of [4], endobj endobj /ProcSet 2 0 R

>> !6-sWUP-T) /Contents 64 0 R /F4 8 0 R

0000049809 00000 n /Filter [ /ASCII85Decode /LZWDecode ]

48 0 obj endstream

&5@n#H-"EU1`K2!P3Gf-$Ct,Ydi9CB'*No.7hCfEb[:,C&"u2ZjIPei/T[J2W&j!5^c`DBk*kKu(>Y(;?JmE#GR*UA34I /ProcSet 2 0 R &5@n#H-"EU1`K2!P3Gf-$Ct,Ydi9CB'*No.7hCfA+C$h&NJ?J5FpgrEe. endobj /Font 52 0 R 62 0 obj

stream 2PcUh5ZM):eJ>f\:0lY9l26dW9uq:u5T 11100011.

/Kids [53 0 R 57 0 R 60 0 R 63 0 R 66 0 R ]

+aSq]^R7U!9]'VMB;G5Q'A'sS9UQ/A$d#J:'aiO?.?Fb6l7fR:HOL8>DJW#. [Z#0r.'`+g)l%'mH5$UgoQHh5WJi='LFRa(^'+N;BoP-?idSVDper%$#3!. U&hgU1bk@67YOhQPagK:OU9@%"g&aYHu`A0I93u^&.HdQI#lX]'ZF-cJ.?:RSoUujc,%I!nS-CiGrtXfFTb.

@GhCu7U9u[:j+[`:AdjG+H=n!bXOr=IP7?*5B#g$a=53gC)B$+>>3NSMK!

>> /Contents 11 0 R U-]0(XN%99rE)=O5,"2IB$AcDT2JQLFK#G.jO]e9YH[7^Z72A)AW%[4&_#Gbpj#+Z bs;?I2b;Gc5VYY/9]%l?,2d&NL;PF]2M;0_jt_sl+Q"EgiF"o+Ku5lm"/(h*1@Im;

0000050227 00000 n stream E(R0) ;(0oI(2A\E):U-95m:@)>8.WC`Y2aU@Q"oA:1f]WJDOlL

/LastChar 255 /F4 8 0 R @ @VJ"MVk0uhb-H-eepbgFQloQ%]^:lm,3>`2M <<

5>=]Q6&Y:KTC[4G1DLs>%^dreFHdciU::Qq6e=YCcA*WJ0N^W('9mF!0U>mW69

_'Z2@3HAH2>1@U2"S'-$h0BGZ]'!eUhORim1U>mKq[\ujK-HgH0fU1HS-7mTh7P[r ac]/S71F:AQCKMKrG3F >> /Type /Font

@S:O\BFb

56h<3k-? 0000022625 00000 n /F9 10 0 R endobj /Differences [ 39 /quotesingle 96 /grave 128 /Adieresis/Aring/Ccedilla/Eacute startxref ���c��d�L��0H>m9vY�.

get L1 = 110101 and R1 = 001010. 216 /ydieresis/Ydieresis/fraction/currency/guilsinglleft/guilsinglright /F8 17 0 R !WcueC,Qk;#4h7\c=Ji.

1471 12 bits.

/Resources <<

36 0 obj #V%L06r=[fO`5mdL>eq@)TM\2-/9b j+,94%ZcN_gV/eZ<0Ie`6Qd4,CmkVZ07cCA$c=RnK&Nd;_YT4q9amXBLJ%E[O+kdl /Resources << 3 0 obj

;(0oI(2A\E):U-95m:@)>8.WC`Y2aU@Q"oA:1f]WJDOlL

/F4 8 0 R 1615 0000034259 00000 n

So the output for the function f(Ri-1,Ki) 51497 /Font << cOBGb_aqmkNgr!g(qeWHfJ3oiNX:>WeZR#f^j013:5h#8)eB-SW84'U:k!NE"i3jB (N"sh%cKs!

/Length 65 0 R

endobj /Name /F2 (t+W6QCR)7:>gF.WBgmX;s >> 0000022462 00000 n consists of the last 6 bits.

/Parent 31 0 R DKbIQ]j!CZY$5+4IBnmSV$`P_?=`)p7#M1VV=Zh$N=pTcm`pPH(Ig ]e^j&8@/153] 0000004089 00000 n

Input message be 100010110101 and the key be 111000111. stream /.notdef/.notdef/.notdef/ordfeminine/ordmasculine/.notdef /Subtype /Type1 endobj /Font << J/gjB!d=RR-(;c

/F2 9 0 R 23 0 obj /BaseFont /Helvetica

endobj /Font << ?XKl!mnm*#TVCndHWc5Rn! 0000046783 00000 n (LN""A6&(qPpBrN/@:]6AQ=OB8:@.%ud/LMM4rSSdm)8 ?dlT9O/_O` /Parent 5 0 R

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