SUBSTITUTION TECHNIQUES IN NETWORK SECURITY || INFORMATION SECURITY||CEASER CIPHER||PLAY FAIR CIPHER

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  • เผยแพร่เมื่อ 24 ธ.ค. 2024

ความคิดเห็น • 207

  • @prabhakarjha1168
    @prabhakarjha1168 6 ปีที่แล้ว +10

    This channel is a hidden gem!

  • @maheshb3756
    @maheshb3756 3 ปีที่แล้ว +14

    Sir you have helped me a lot sir during my exams time. Your explonation is very goood and clear. Keep maintian that sir. You are one of the best teacher in my study career. I was scared about this subject and i found you on youtube. Now i learned lot of subject. Thank you very much sir.

  • @nasratt
    @nasratt 2 ปีที่แล้ว +4

    When the letters fall in different rows and columns, each letter is replaced with the letter in its own row and the column occupied by the other letter in group.
    HE -> FW
    LX -> PU
    LO -> SN

  • @ritajenifer3182
    @ritajenifer3182 4 ปีที่แล้ว +2

    Thank u sir your lectures are very easy to understand

  • @RkMusicEventsSurat
    @RkMusicEventsSurat 6 ปีที่แล้ว +10

    Thank you so much Sir. Your videos means very easy to understand concept. 🙏😀❤️

  • @saisanjay5015
    @saisanjay5015 3 ปีที่แล้ว

    Videos are very useful to us please continue the videos and give the more subject

  • @protrader7090
    @protrader7090 6 ปีที่แล้ว +2

    Due to my GATE Preparation I didnt listen classes in my clg isimply watch ur videos n attempt the exam thank you sir

    • @sundeepsaradhi
      @sundeepsaradhi  6 ปีที่แล้ว +1

      Hi krish
      Thanks for your support and interest towards our channel and share our channel with your friends. Keep following our channel.

    • @protrader7090
      @protrader7090 6 ปีที่แล้ว

      @@sundeepsaradhi I'm from RVR n JC
      My All Friends Watching Ur Videos
      Thank you sir

  • @Sagar-os2xu
    @Sagar-os2xu 6 ปีที่แล้ว +2

    Your teaching is the best..

    • @sundeepsaradhi
      @sundeepsaradhi  6 ปีที่แล้ว +1

      hi
      thanks for watching my sessions.
      thanks for your interest and support towards our channel.
      share my sessions with your friends and let them do subscribe to our channel.
      keep following our channel.

  • @Random-wn4uo
    @Random-wn4uo 6 ปีที่แล้ว +3

    Wow great lecture....i understood very well...keep going sir

    • @sundeepsaradhi
      @sundeepsaradhi  6 ปีที่แล้ว +1

      hi yogi
      thanks for your interest towards our channel and share my sessions with
      your friends and subscribe to our channel.Keep following our channel.

  • @ganeshjaggineni4097
    @ganeshjaggineni4097 ปีที่แล้ว

    NICE SUPER EXCELLENT MOTIVATED

  • @dr.yagnamnagesh1058
    @dr.yagnamnagesh1058 6 ปีที่แล้ว +1

    Videos are very helpful for remote areas people

    • @sundeepsaradhi
      @sundeepsaradhi  6 ปีที่แล้ว

      hi Nagesh
      thanks for your interest towards our channel and share my sessions with
      your friends and subscribe to our channel.Keep following our channel.

  • @maneeshareddy2085
    @maneeshareddy2085 ปีที่แล้ว +1

    In play-fair cipher ....if the diagonal element is i/j what we need to take sir ?

  • @muthuzpathuz
    @muthuzpathuz 3 ปีที่แล้ว

    Great class

  • @AnjaliKumari-ie2uw
    @AnjaliKumari-ie2uw 4 ปีที่แล้ว

    Very well explained the topic..thank you sir

  • @vikashchaudhary9063
    @vikashchaudhary9063 6 ปีที่แล้ว +1

    thank you sir
    your voice is amazing ....................
    I understand it

  • @angelfly6854
    @angelfly6854 6 ปีที่แล้ว +42

    SIr, In play fair, in the case of diagonal pairs , you have done wrong, HE -> FW and not by WF because it needs to be replaced by the letter that lies in its own row and the column occupied by the other plaintext letter.

    • @sundeepsaradhi
      @sundeepsaradhi  6 ปีที่แล้ว +22

      hi
      you are correct and i am sorry for my mistake it is FW and not WF
      Thanks for your correction and observation.

    • @nikhil4sharma
      @nikhil4sharma 6 ปีที่แล้ว +1

      what about LO->NS shouldn't it be SN?

    • @ramyaiyer5949
      @ramyaiyer5949 6 ปีที่แล้ว +19

      yes HE --> FW
      LX --> PU
      LO --> SN

    • @protrader7090
      @protrader7090 6 ปีที่แล้ว

      yeah

    • @anupam4338
      @anupam4338 6 ปีที่แล้ว +1

      angel fly thankyou dost hum bhi confuge ho gaye the ..thanks

  • @subhankarkaligithi3805
    @subhankarkaligithi3805 3 ปีที่แล้ว

    Super explanation sir🙏🙏🙏🙏

  • @sunnyjain630
    @sunnyjain630 6 ปีที่แล้ว +5

    hitzz likes guys....man deserves thousands of likes for such lucid explanations......

  • @vinaysagar4215
    @vinaysagar4215 6 ปีที่แล้ว +4

    sir, what about the case when we get h& d in ur example , for h should we use i or j??? or any one of them???

  • @mohammadjafar6594
    @mohammadjafar6594 6 ปีที่แล้ว +1

    thank u sir..for such an awsm video...👍👍 keep it up

  • @business-hy3lb
    @business-hy3lb 6 ปีที่แล้ว +2

    Sir great video . Slow and detailed really helped me prepare notes also at the same time .

  • @SandeepYadav-zv1qj
    @SandeepYadav-zv1qj 3 ปีที่แล้ว

    thank you so much sir. .your easy explaination helped me alot

  • @studywithpk5
    @studywithpk5 6 ปีที่แล้ว +2

    very helpfull vidio.thanks

    • @sundeepsaradhi
      @sundeepsaradhi  6 ปีที่แล้ว

      hi pandav
      thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

  • @honey6567
    @honey6567 6 ปีที่แล้ว +1

    thank you so much i really learn from your video

    • @sundeepsaradhi
      @sundeepsaradhi  5 ปีที่แล้ว

      hi
      thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

  • @buenology
    @buenology 7 ปีที่แล้ว +8

    You are the man! I like your videos. GREAT WORK!

    • @sundeepsaradhi
      @sundeepsaradhi  6 ปีที่แล้ว +1

      thank you very much. Hope your support will continue further.

  • @vininfosec3075
    @vininfosec3075 5 ปีที่แล้ว +1

    Excellent

  • @arjun7067
    @arjun7067 5 ปีที่แล้ว +3

    Sir if our plain text contain either of letter I/j then how the 5×5 matrix look like .

  • @arunendraprakashdubey7904
    @arunendraprakashdubey7904 6 ปีที่แล้ว +2

    great vdo very helpfull

  • @kollakarthikchowdary8481
    @kollakarthikchowdary8481 6 ปีที่แล้ว +1

    tnk you very much sir...Ur videos are very much helpful to us..u made the concept very simple and easily understandable..

    • @sundeepsaradhi
      @sundeepsaradhi  6 ปีที่แล้ว

      hi Karthik
      thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

  • @durishettyramkiran333
    @durishettyramkiran333 6 ปีที่แล้ว

    hi sir,your explanation is well and good.

  • @raghavendraprasad4923
    @raghavendraprasad4923 ปีที่แล้ว +1

    Hi Sir, how we will decide the value of K [ Key ]?

  • @OumarMarmar
    @OumarMarmar 10 หลายเดือนก่อน

    Thanks alot sir your the best

  • @muskanmathur5146
    @muskanmathur5146 2 ปีที่แล้ว

    You are awesome 🤩

  • @phanisaideepak.k866
    @phanisaideepak.k866 5 ปีที่แล้ว +1

    Can you please explain these topics..
    Polyalphabetic
    Substation Methods -- Permutation Methods -- Cryptanalysis of these Methods

  • @kajalwadate1180
    @kajalwadate1180 5 ปีที่แล้ว +1

    tysm sir for video 😊

  • @k.v.stilak9854
    @k.v.stilak9854 4 ปีที่แล้ว +2

    Nice explanation sir. How does these work if plain text contains number?

  • @vaskaran1
    @vaskaran1 6 ปีที่แล้ว +1

    REALLY SUPERB, I INSISTED MY STUDENTS TO SUBSCRIBE UR CHANNEL.

    • @sundeepsaradhi
      @sundeepsaradhi  6 ปีที่แล้ว

      hi vasnatha raj garu
      thats so nice and may i know where you are working and where you are from ?
      thanks for your interest towards our channel and share my sessions with
      your friends and subscribe to our channel.Keep following our channel.

    • @vaskaran1
      @vaskaran1 6 ปีที่แล้ว +1

      Myself Professor in SIDDARTH GROUPS, PUTTUR, AP. Urs is a great job, presenting in a clear and lucid manner, surely every student will get a clear idea after watching ur classess. Thanks a lot for making my job so easy.

    • @sundeepsaradhi
      @sundeepsaradhi  6 ปีที่แล้ว

      hi vasantha raj garu
      thats so nice to hear from you sir
      thanks for your comment and support towards my session and our channel.

    • @Sairam30722
      @Sairam30722 3 ปีที่แล้ว

      Absolutely my students also

  • @sahithyachowdary9720
    @sahithyachowdary9720 7 ปีที่แล้ว +1

    It is really good ND easy to understand sir. but there are two more technique, can u make vedio on hill cipher .......

    • @sundeepsaradhi
      @sundeepsaradhi  7 ปีที่แล้ว

      hi sahithya
      definitely i will try to upload them.
      thanks for watching my session and supporting our channel.

  • @chamarthykoushik204
    @chamarthykoushik204 2 ปีที่แล้ว

    1.7 lakh views but only 2k likes
    Common yaaar Encourage him by just clicking the Like button
    It doesn't cost you ....Right!!!!

  • @prakashkatiyar5879
    @prakashkatiyar5879 7 ปีที่แล้ว +1

    sir I liked your videos...
    and I wants videos on... topic of network security like..
    secret key cryptography
    hash function and msg digests
    public key cryptography
    authentication and kerberos.

    • @sundeepsaradhi
      @sundeepsaradhi  7 ปีที่แล้ว +1

      hi prakash
      thank you and definitely one by one i will upload every concept on information security
      keep on watching my sessions.

    • @prakashkatiyar5879
      @prakashkatiyar5879 7 ปีที่แล้ว

      Thanks Sir

    • @sundeepsaradhi
      @sundeepsaradhi  7 ปีที่แล้ว

      DES ALGORITHM
      th-cam.com/video/SaZGjQBItBc/w-d-xo.html

  • @kalyanchoudhury6254
    @kalyanchoudhury6254 6 ปีที่แล้ว +2

    If one of the Plain text element is V and Key is 4.then C(v)=(22+4)mod 26=0.then what will be the Cipher text of V?

    • @sundeepsaradhi
      @sundeepsaradhi  6 ปีที่แล้ว

      hi kalyan
      that depends on the numbering you have taken either 0 to 25 or 1 to 26.

    • @dbhagya2260
      @dbhagya2260 4 ปีที่แล้ว

      Hii sir ur teaching was just amazing. U told that in playfair text if we have repeated letters we have to add dummy letter,but u add only between l and l then what about o and o sirr?? Plzz give me kind explanation sir

  • @alirazzaq400
    @alirazzaq400 6 ปีที่แล้ว

    What about the Dummy letter ? We can remove the dummy cipher text or not ?

  • @durishettyramkiran333
    @durishettyramkiran333 6 ปีที่แล้ว +2

    explain OSI model in cryptography?

  • @saitejalaggani
    @saitejalaggani 3 ปีที่แล้ว

    what if key vale has i/j how to place 26 letters in matrix @Sundeep Saradhi Kanthety

  • @sarath6169
    @sarath6169 5 ปีที่แล้ว +1

    What if the key has the letters I and J seperately as the keyword --AJITH in play fair cipher..?

  • @SusheelKumar-dq7np
    @SusheelKumar-dq7np 3 ปีที่แล้ว

    Sir thank you but how to get orginal text after converting encryption in Caesar cipher

  • @ensrpavan
    @ensrpavan 6 ปีที่แล้ว

    Sir in play fair cipher if key having letter I then what latter should we merge because of 5*5 matrics contains 25 letter only

  • @umang0055
    @umang0055 4 ปีที่แล้ว

    what will be matrix for 6*6 (alphanumeric) in playfair cipher

  • @honey6567
    @honey6567 6 ปีที่แล้ว +1

    sir nice.....................

    • @sundeepsaradhi
      @sundeepsaradhi  5 ปีที่แล้ว

      hi
      thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

  • @butterfly12397
    @butterfly12397 3 ปีที่แล้ว

    In ceaser cipher When decrypting the example: zoo in cipher text for z the answer is not getting.can u explain me sir.while decrypting it is getting 0.so explain me what is the alphabet for 0.

  • @javier8910
    @javier8910 6 ปีที่แล้ว +2

    What happens if the pair of P.T characters are both I and J? They are merged into the same table cell...

    • @sundeepsaradhi
      @sundeepsaradhi  6 ปีที่แล้ว +4

      hi Javier
      if you combine I and J then the cipher text may also be consider 1 among two possibilities.
      Hope your doubt has been clarified.

  • @sagnikchakraborty165
    @sagnikchakraborty165 6 ปีที่แล้ว +2

    SIr if the key itself consist of i or j then which alphabets should we merged in 5*5 table?

    • @sundeepsaradhi
      @sundeepsaradhi  6 ปีที่แล้ว +2

      hi sagnik
      we can merge any two alphabets in one box but in general i and j will be merged in one box.
      hope your doubt has been cleared.

  • @rakeshpoloju265
    @rakeshpoloju265 3 ปีที่แล้ว

    What should be letter for 26 mod 26?

  • @sivalingamambigapathikalai3798
    @sivalingamambigapathikalai3798 6 ปีที่แล้ว

    sir tell me in caesar cipher my plain text is VAN after calculation then i am geeting 0 as a result but here there is no alphabet for zero. c=(k+p) mod26. key is 4, (for v) (22+4) mod 26, then 26 mod 26 sp getting as the answer as 0. ? pls clear sir.

  • @faisalkhan1346005
    @faisalkhan1346005 5 ปีที่แล้ว

    well Explanation of both techniques are perfect , now make a video on permutation-diffusion and Substitution-permutation network , explain transformation matrix , sensor matrix and measurement matrix

  • @prudhvir3ddy
    @prudhvir3ddy 6 ปีที่แล้ว

    great lectures

  • @thansurya
    @thansurya 5 ปีที่แล้ว

    Keep rocking Dude..how should i decrypt of encryption of plain text in play fair example

  • @Postbox857
    @Postbox857 6 ปีที่แล้ว

    Sir best teacher in India Sir u r

    • @sundeepsaradhi
      @sundeepsaradhi  6 ปีที่แล้ว

      hi naresh
      thanks for your interest towards our channel and share my sessions with
      your friends and subscribe to our channel.Keep following our channel.

  • @iqbalvoices
    @iqbalvoices 5 ปีที่แล้ว

    are videos in the playlist in order?

  • @AdarshYadav-ee6si
    @AdarshYadav-ee6si 6 ปีที่แล้ว +2

    Sir l like your teaching
    But a dot is that in the field of network security were these is acctually work such as you give example of balloon in chieper text

    • @sundeepsaradhi
      @sundeepsaradhi  6 ปีที่แล้ว

      hi Adarsh
      thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

  • @niharikaharika2774
    @niharikaharika2774 2 ปีที่แล้ว

    sir please explain 3rd substitition technique also as you have explained only 2

  • @hemavatigaitonde4625
    @hemavatigaitonde4625 6 ปีที่แล้ว +1

    ur video very good sir

    • @sundeepsaradhi
      @sundeepsaradhi  6 ปีที่แล้ว

      hi hemavati
      thanks for watching my sessions and your interest towards our channel.

  • @usmanishaqzunnurain5414
    @usmanishaqzunnurain5414 6 ปีที่แล้ว +1

    You are genus Sir

    • @sundeepsaradhi
      @sundeepsaradhi  6 ปีที่แล้ว

      hi Usman
      thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

  • @chintuch25
    @chintuch25 3 วันที่ผ่านมา

    sir for play fair case .. can u please write me a cipher text for pt(ACHYUTH) and key (CHINTU) and also pt (ACHYUTH) and key (MANGO). and I guess all rules will be applied for this examples.

  • @karunakaranparasuraman9446
    @karunakaranparasuraman9446 3 ปีที่แล้ว

    Thank you sir❤💞

  • @rukhsananazz2747
    @rukhsananazz2747 4 ปีที่แล้ว

    Thank u so much sir ...😍

  • @asimraza2429
    @asimraza2429 6 ปีที่แล้ว +1

    sir plz told me how k=4.
    Can we take any number between 1 to 26 or not

    • @sundeepsaradhi
      @sundeepsaradhi  6 ปีที่แล้ว

      hi asim
      there is no restriction with 4 we can have any number between 1 to 26
      Hope your doubt has been clarified.

  • @sonurajaryan8535
    @sonurajaryan8535 6 ปีที่แล้ว +1

    06:47 min,, how you write k=4????

    • @shimpipathak2472
      @shimpipathak2472 4 ปีที่แล้ว

      It will be mentioned by the question itself , we do not assume that

  • @Jayperkush
    @Jayperkush 3 หลายเดือนก่อน

    SIR I CAN CORRECT YOU KINDLY,,,,,ALWAYS COUNTING STARTS FROM ZERO NOT ONE,,,,FOR THAT REASON A TO Z WILL RANGE FROM 0-25

  • @vedprakash-xs5hy
    @vedprakash-xs5hy 6 ปีที่แล้ว

    Sir,, what will we do,if only single letter remain without leftmost repeated letter...,,

  • @Pranshusaxena14987
    @Pranshusaxena14987 5 ปีที่แล้ว

    Caeser cipher case what if pt in v what will be cipher text then

  • @sivamsivam837
    @sivamsivam837 6 ปีที่แล้ว

    Sir will you explain about hill cipher

  • @satishdhoni4096
    @satishdhoni4096 6 ปีที่แล้ว

    👏👏👏👏👏 tq sir

  • @bobbybindela1959
    @bobbybindela1959 3 ปีที่แล้ว

    Sir ,
    Isn't LO-SN ?
    Could please clarify.

  • @bhaktimodak7832
    @bhaktimodak7832 2 ปีที่แล้ว

    Thank you so much sir 😊 This videos are really helpful for me👏😊

  • @shubhamjha5085
    @shubhamjha5085 6 ปีที่แล้ว

    Sir what if there is 5 different letters in the plain text? Toh pair kaise banega sir...using dummy letter??? Is there any restriction on choosing the dummy letter??

  • @AA-ne3lc
    @AA-ne3lc 6 ปีที่แล้ว

    Great video!

  • @poojamann5394
    @poojamann5394 6 ปีที่แล้ว

    Hlo sir...for message WTAAD using caesar cipher with key 15...it should be LIPPS....correct me if i am wrong..

  • @Sheoranhe
    @Sheoranhe 5 ปีที่แล้ว

    Sir it looks similar to affine cipher to me are they same or different??

  • @Sonukumar-bj7pr
    @Sonukumar-bj7pr 5 ปีที่แล้ว

    Thank you sir ....for the vdo

  • @SHIVAMBHADUKA
    @SHIVAMBHADUKA ปีที่แล้ว

    sir why are we taking the key as 4 ONLY....like on what basis it is taken as 4

  • @purnimamohanty9526
    @purnimamohanty9526 6 ปีที่แล้ว

    how can we get the decrypted one using play fair method

  • @hazrinbabakr4002
    @hazrinbabakr4002 5 ปีที่แล้ว

    very helpful thanksss

  • @paulkennethprathipati
    @paulkennethprathipati 3 ปีที่แล้ว

    Thank you sir 😊

  • @lakshmidevi.p3344
    @lakshmidevi.p3344 6 ปีที่แล้ว +1

    Do we have Vigenere cipher video ?

    • @sundeepsaradhi
      @sundeepsaradhi  6 ปีที่แล้ว

      hi lakhsmi
      no i didn't have the video of vigenere cipher.
      thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

  • @rabeehkt
    @rabeehkt 3 ปีที่แล้ว

    In caesar cipher A shoud be taken as zero and z taken as 25

  • @kakanurumallikarjunreddy9515
    @kakanurumallikarjunreddy9515 5 ปีที่แล้ว

    Sir if the key is not given what we should can take

  • @subisfree5390
    @subisfree5390 4 ปีที่แล้ว +3

    In other youtube videos i have learned that
    The word balloon -ba lx ox nx
    Not like that.
    I believe you more but...

  • @RkMusicEventsSurat
    @RkMusicEventsSurat 6 ปีที่แล้ว

    Sir have one question...
    30 mode 26 = 4 in zoo. Why did you minus here???

    • @ravishankar8719
      @ravishankar8719 5 ปีที่แล้ว

      How you take k=4, plz tell me

    • @sundeepsaradhi
      @sundeepsaradhi  5 ปีที่แล้ว

      hi
      here k can be chosen any value as it is a key.

  • @gangavarapuabhishek8468
    @gangavarapuabhishek8468 6 ปีที่แล้ว +1

    sir how the key can be 4 why not 5 is it so because l character is repeating two times

    • @sundeepsaradhi
      @sundeepsaradhi  6 ปีที่แล้ว

      Hi abhishek
      The key value is not restricted to 4 but it can be any value. Just for example I have taken it as 4. Hope your doubt has been clarified. Thanks for your interest towards our channel and share my sessions with your friends and keep following our channel and don't forget to subscribe to our channel.

    • @pavanipakalapati5200
      @pavanipakalapati5200 5 ปีที่แล้ว

      Tqq for clarifying

  • @viswamahi7611
    @viswamahi7611 6 ปีที่แล้ว

    How can we do if we encounter merged one ( i & j )

  • @babithabalan2826
    @babithabalan2826 5 ปีที่แล้ว

    But sir gate syllabus is different rather than basic may know the difference between them

  • @binnusinha1492
    @binnusinha1492 6 ปีที่แล้ว +1

    if characters falls in same column then what we have to do?

    • @sundeepsaradhi
      @sundeepsaradhi  6 ปีที่แล้ว

      hi binnu
      if the characters falls in same column then replace with beneath character. hope your doubt has been clarified.
      thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

  • @supriyamanchiryala5799
    @supriyamanchiryala5799 5 ปีที่แล้ว

    Sir if plain text words didn't repeat so one letter is remaining how that one letter is sir

  • @nehapanwar8398
    @nehapanwar8398 5 ปีที่แล้ว

    Sir plz explain monoalphabetic and polyalphabetic cipher also

  • @chandana3836
    @chandana3836 6 ปีที่แล้ว +1

    Awesome sir you have explain so well.....I like your lectures....it is really helpful.....

    • @sundeepsaradhi
      @sundeepsaradhi  6 ปีที่แล้ว +2

      hi chandana
      thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

  • @learnit3
    @learnit3 5 ปีที่แล้ว

    Why can't be C. T in playfair for plain text be FWPUNS

  • @beautyofvoice3988
    @beautyofvoice3988 4 ปีที่แล้ว

    In the balloon "o" also repated na .. but why your not use .. another dummy letter

  • @adarimahato9544
    @adarimahato9544 5 ปีที่แล้ว

    Heavyyy

  • @pularirecipe9241
    @pularirecipe9241 7 ปีที่แล้ว +1

    sir ipv4 valid? how to chk old reply fast urgent I mean address

    • @sundeepsaradhi
      @sundeepsaradhi  7 ปีที่แล้ว

      hi ranjith sorry i didnt get your doubt exactly pls elaborate your doubt so that it will be easy to clarify.