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The document contains various code snippets for different encryption algorithms, including a Caesar cipher, Hill cipher, Diffie-Hellman key exchange, SHA hashing, and RSA encryption. Each section includes prompts for user input and processes for encryption and decryption. The code is written in C and Java, demonstrating basic cryptographic techniques.
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Save ns record(2) For Later poiRanee(Caecay cipher)
include
qinclucled Shing hy
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“include (29)
CipherCi)= cipher CiJ - 26, -
Print FU'7.c", cipher iJ i oS
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Paiotf (“laine AFTER DecRypTion :*)5
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FraioCid = cipherCt)- Keg;
itLisupper Cipher CiI) 22 (plain Ci] ae ))
Plan Ct) = plain Ci} 1265
Vliclower cipher Ci OR (plain CJ" 6):
Print (°C, plain Ci) y
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gerchor,
Enter the plain text shello
Enter the key value: 3
Plain! “TEXT: hell6
ENcRYPTED TEXT + choo
AFTER DECRYPTION hello ”
Program (Hill cipher)
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# include <¢tdiosh> ;
Hinclude < Conioh>
tH Include
int main) -
unsigned Ink A033 2 8$¢. 24 18 sw
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Encrypted cipher Teat : pot |
Decrypted cipher Text: A cT |
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long, long int power (int a,
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long long int +3
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FEU (EFL) y mod ;
long int Glouleteker lint a int 4 fat)
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Enter Finck prime number: |
Enley anether prime number
Enter the value o, nand y:
1 9
Enter the value 4% bor the fist person: &
Enley the value o] 4 for the secmd person: 5°
Key fov the first pets to: I
Key for the Second person to: |
Peniran | Gecure on Algorithm)
Import Java: Security. 4; |
Public. class SHAL ¢ |
Public Static void main( Shing ty a)
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Message Digest mol = Mew i i
Guat, “IPI Digest gettavtnce
Systen-ouk-printly e
Syslem cub: prlally
Sting put = ° iy
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| byte cy output = ma: digert (5)
Provider -“tmd. Jetprovidert )) ;
TANG = amd tasting. 9); he
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System -out prtintlol sa | (\" He inoul-t* \") = Hbyley
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‘input = “abe”;
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Output: md-digest Or;
Spleen “oul paiat In SHAT UC" 4 apt #N") "aby
Totter (output)
Anput> “ab ede Fqh\jkl mnopanstuvny 5”
mavupdate Unpuk - gek Bytes 0);
Output = md paiintty (> i
Splen out - print c) j
System Out paintln US| CS + inpuk "(Jet bojles Tot)
(output) ; |
Systin out printin C5 3
tah (Exception ¢) &
Systern. out: printin(" Exception" 42) ; i
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Public Stake String bytes Totten CbytetIb) j
ee headigit C92 VO) Ns 234 44/589), 24 RB,
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+_——————————— HL!
ovTpuTy } FE
4H C Hi
SHAL (°") = DA 34 A3EE SE bgUB0p3 255 BFEF ISG)
0134 0A F090709
SHA (Yabo) = A1993E 36440 691648 3615417 (
950C26C9CD00310 {
SHA L Cavedetghijktmnop-vrstuvwry3 “je {
320loc7 BF CFI6SA OCACU CE3q Falacayaud i
03A 341 |
Fin A} |
RSA
OGRAM : (wi iphey )
PROGRAM : (wiqhthe cipher
Finclude
# include ¢ shing-h>
long ink 5
Prank, Heyy Cd, ae dep cies j tie en)
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Chat m9 Elev},
int Prime (tong int) «
Hyoid Cec); Lo
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Voiel encrypt),
long
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Flag = Prime (9),
1Flflag-20) &
Paint Clntneng input la");
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Paint f("\n Enter another prime numbet \n"),
Stank Ud” Bad; |
flags prime La); |
IF (Cag =-oltp== al) § |
Patntt(*\n waong input \s"), |
JetchO 5 3 |
PAnIE( Yacketey message\n") | |
FeiushCstdind,
Scank (*y. Ss", m4);
fos (iso; mgt) += Nott; itr)
mei) Femsg Ci)
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beb-1)# (ait), |
ce QO, a |
PATALE [q Possible values 4 ¢ ane d axe \e");
Fos (120) 1 fags
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tong int CAUlong int wg
long int kely
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return (Kf)? 5
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Long int pe ck, Kege €(oJ,k, Len;
feo,
Leng = strlen (ms);
Painth OA”, cLY)) F |
fev (iso; ied 5144) b |
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for jz 05)S 4 tt) &
t= kt CaliliJ ed) 3
ACiJe bn 26) 3
Pxinth (“Mnttnoypted cipher teat: *)j |
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Paint C7c7 d cije or):
JF iso 123 51D E
+20)
Por Ljros eB sjtt yb
Leet CbwWUIAAGD)) 7
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prcatt CWBeenypated Cipher Text :")5
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Patt Cue’, cLij tes) 5
gJetchO;
Achan Oj 3
y A.
Tents first Pure number F
another Prime numbex 13
Ente message hetlo
Fae
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ted ciphey dont = hello
lithe Recn
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