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We Aad lurue dn Holne Ged * Meibttittton (-10 (c,u).(Zu . 24(491 Ja lo mane dur tubuonnorn (Lu} va dendd utve lo dle u P V ueni Wa veccmu mte] Sor n mholmd Anuee Ku...

Question

We Aad lurue dn Holne Ged * Meibttittton (-10 (c,u).(Zu . 24(491 Ja lo mane dur tubuonnorn (Lu} va dendd utve lo dle u P V ueni Wa veccmu mte] Sor n mholmd Anuee Kun Jue Ke v Wrltdpmrni (s,u takn Vate drm Ir 1-04 Eiei ttui you cuuk eot t4 huvol nt vardudIhy ste Ihn peotarm Son a ou mt Note tht nt ohnrrd t0 artdl] NOUA marmkAeun_

We Aad lurue dn Holne Ged * Meibttittton (-10 (c,u).(Zu . 24(491 Ja lo mane dur tubuonnorn (Lu} va dendd utve lo dle u P V ueni Wa veccmu mte] Sor n mholmd Anuee Kun Jue Ke v Wrltdpmrni (s,u takn Vate drm Ir 1-04 Eiei ttui you cuuk eot t4 huvol nt vardudIhy ste Ihn peotarm Son a ou mt Note tht nt ohnrrd t0 artdl] NOUA marmkAeun_



Answers

Suppose that the ciphertext ERC WYJIMGMIRXPC EHZERGIH XIGLRSPSKC MW MRHMWXM-
RKYMWLEFPI JVSQ QEKMG was produced by en- crypting a plaintext message using a shift cipher. What is the original plaintext?

Okay, So for this particular problem we have, Of course, I have my letters with their associated with. And then, of course, we have theory Jinling Cryptogram. And then I have already assigned the letters based on what they actually are. And we're gonna use Theo in first, So we're gonna use P minus K. Maude 26 Soapy is whatever the letter value is has been assigned in the cryptogram. And then K is the key And what letter it stands for. And then Maude 26 is you know, every 26 letters we have to subtract from 26 or 26 or what have you to get the appropriate letter. So, essentially, the idea behind it is the values they're going to equal 0 to 25. So we don't want if we have 26 we would subtract 26 from it and come back to zero, so that's kind of the idea behind it. So now what we do is we had to figure out our K value. So usually the rule of thumb that I follow when I do, these is I look through and see which letter do I usually see? The most common. And this case, it's V. So I have, I think, a total of 123 4567 V s in here. So out of all the letters, that's quite a few. The most common letter that's used in the English language is the letter e eso. Then at that point that I if he doesn't happen to fit, then I'll try other letters. A R s usually s and t um and go from there until I get the right one. So what I want to do is I wanna look at the letter V so V equals 21 this one equals four. So if we take 21 subtract for that gives us 17. So okay, this 17. So what I want to do is I want to go through and I want to just subtract 17 from each of these. So three minus 17 is going to be negative. 14 21 minus 17 is for and then four minus 17 is going to be negative. Working eso 26 we'll see. So four minus 17 would be negative. 13. So next, so to minus 17 would be negative. 15 um, and then five minus 17 would be negative. 12 12 minus 17. Negative. Five 21. Minus 17 is four. So negative. Seven. Negative. 12. Um, let's see. Negative four. And then negative. 12. Um, negative. 13 three for and then in the negative. Mine. Zero, um, four, minus 17 is negative. 13 and then three Negative seven. And then seven zero negative. Seven and then 14. So negative three negative. Eight weeks. Um, let's see. Tense. That's negative. Seven. 24 is going to be seven. And then what's 21? Minus 17 would be four groups. So then I'm going to go to the next one. So negative. Eight, 44 three negative 12 and then 22 would be five and the negative. Eight to seven, certainly eight. And then 21 is going to be four. Um, for would be negative. 13. 19 would be too. And then 21 would be four again. So now what I want to dio is I want to take 26 and I wanna add it to the negative numbers. But for example, now this one's going to become 12 so all of my negative fourteens will become 12 My negative thirteen's will become positive. 13. Those were not going to change. Oops. Okay, um, are 13 and then negative 15 will become 11. Okay, negative. 12 becomes 14. Um, negative. Five becomes 21 and then negative seven becomes 19. Okay. And then negative 12 becomes 14. Mhm. Ah. Four is going to become 22. Okay. And then negative nine. Eso 26 minus nine is going to end up being 17. Let's see, Negative. Three would be 25. I'm sorry. 26 minus three is gonna be 23 looks and the negative eight will become 18. So now we have our letters. So what I want to do finally is Look up the letters that we have. So it's going to be m e en. So far, so good then. L Oh, let's see. 21 is what's V then? For his e 19 is t 14 is oh w o in. Let's see. Let's see. B e 17 is our zero is a 13 is in and then use t then tea. H a t. Okay. 23 is, uh, pretty sure this one is incredible. Both in double Check it. Eso Let's see here. So Z was 14 and then we want to do minus seven, which was negative. Three mm are actually easy. Should be 25. This should have been negative. I'm sorry. Okay, So 25 minus 17 would be eight. This should be I. And then we have 19. So T h ive and then 18 is S E b and then oh, f and then s see I e in c e the men left toe wonder. And that is the seed of science.

In this question, we are asked to decipher the court using that encrypted using C South cipher. And this is I. According that, Caesar, the seas are like invented, supposedly on dhe. It just just simple shifting cipher going forward from three position and it is at the end, it go back to the front. So said Go back to ABC, Go go back to see And just that decipher would would mean we go backward tree characters ask you and we are given these tree according we can does easily just go backward by tree character I will show one off them So this one ish will be e the will be here. The bill will be t right. And this is do you i him and this You Him? Yeah, that makes sense. So you you can think of these as number and my Nazis by tree and then call for the number as well. But if you are familiar with English Carter, you probably can't do This is just three characters, so it's very simple. Now, if you decipher every takes before you're gonna get this tree is blue. Jean B is test today and see it in himself. Yeah, that makes sense. So these type off ship cipher, if you translated back, why you decide for you and the world doesn't make sense like some kinda is not correct in English Word that probably means you miscalculate something. So is easy to shake. It should make sense. The initial work. Okay, that's is it for this video. Thank you.

Okay, So for this one, we're told the s some encrypted messages that were encrypted using these cipher P plus 10 mod 26. Now, this was the encryption cipher. So to decrypt it, we need to undo that. Right? So we're going to use the decryption cipher P minus 10 mod 26. All right, so for a are given message is see e be be Oh, eggs an OBE, x y and G. OK, so first we need to convert that into numeric ce, where a call zero equals one Sequels to case of sea is going to ese for 11 14 23 13 14 and one, 23 24 and six. So now we could run it through our algorithm where we take the number. It's a track 10. And then take my 26. Right, So two months, 10 being negative. Eight mon 26 which is really 18. All right, so now well, cover into those numbers. So we get 18. Same thing here in native six month 26. That would be 20. Okay, then we get 17 17 four, 13 3 4 17 13 14 and 22. And then We just need to translate that back into the alphabet. So it's gonna be an S u R r e and D he r n o w spooky. It says surrender now it's probably how some of this homework makes you feel. Okay, So, onto part B here were given the phrase 00 W i p be s oh X. And so first, we want to translate this into the numbers numerals using the equal zero equals one Sequels too. Okay, so we get that Ella's 11. Oh, is 14 w is 22 eyes, eight p is 15 be is one s is 18 0 is 14 x is 23 it is 13 and I we're gonna use our cipher, right. Which recall is I'm going to be p minus 10 March 26. Yes. So when we take 11 minus 10 while 26 is could be the one 14 minus 10 is four 12 b negative. Tuesdays will be 24 five. That's negative. Nines. Women with 17 eighties gonna be 8 14 4 23 is 13 and 13 is three then Now we have to translate it back, and we do that we get Be? Yeah. And why f o r i e and d be my friend a little bit nicer than the last one. All right, so now we have the last one. Here we are, given the phrase d s. I should probably leave more space than this. A d s w Ow p Why be p e x? So again we translate it into the numbers using a zero beak Was one Sequels too? S o D is gonna be three s is 18 w is 22 0 is 14 a. P is 15. Why is 24 b is one? Why is 15 eat is four and X is 23. And then we put a cipher on it, which was P minus 10 mile 26 to get to the next stage. And when we do that. So this would be negative sevens that ends up giving us a 19. This will be an eight 12 four five, 14 1 becomes negative. Nine. That is a 17 five negative six is gonna be 20 and a 13. And then we translated back into letters, so ah, this time we get tea. I e f o r s u n time for fun

Hello and welcome to this video solution of numerous. Here we are given a link comprehension. So here in statement one were given that and iron or a on roasting with sodium carbonate and lying in the presence of air gives to compound PNC. And you're from option the second part the solution be in concentrated. It's alan reaction with production furrows and it gives a blue color on precipitated of compound their cost solution of C. On treatment with considerate statistical gives a yellow colored compound E. And the compound even treat it with a seal gives an orange red compound F. Which is used as an ox raise anything. So you have to make certain predictions to come into the solution. So let me show you how it's made. So first of all we take for if he oh she had to poetry thus eight and a two freedom global neck And with air that is given seven or 2 good line gives you to a free two or three that's eight the name so Seattle four. That's it. It's a frustration. Next we have if we two or three reacting with concentrate sales that is given gives you who official three Last three H 2. Right now this official tree reacts with who before if he 10 6 that is protection fellow sign a great this gives you the blue solution pushing blue solution of if the four if he CN six whole trade plus 12 cases. Mm Next From three we have two any he wanted to see our well for That's 8/10 of food gives you we need to the odd 47 is the yellow color solution. Greatness in A. Two so four. That's it too. No you have in A to see our two or seven. Okay, last case here is the orange color substance of people pr two or seven that's 2010. So this is the so let us state what is A what is B. The first we have me is If you see a 23, this is a Next we have every two or 3 SCB or Yes. So this suits also be ready And in in 204 this is C. Right BNC. That is mentioned. Yes. Now this pushing blue books. Mhm. Yeah. Yeah. Whoa it is. Mhm. Okay. To see again this election with the this one your local er this is E and we have orange. What are some common? It does if Yeah. Right. I hope this is clear to you and have a very good rest of the day. Thank you.


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