Codebusters C

User avatar
Name
Member
Member
Posts: 434
Joined: Sun Jan 21, 2018 4:41 pm
Division: C
State: NY
Pronouns: He/Him/His
Has thanked: 49 times
Been thanked: 46 times

Re: Codebusters C

Post by Name »

olivia.m19 wrote:Here's an excerpt from the lab I did in chem class today, encoded as a Caesar cipher:

Ze kyzj vogvizdvek, pfl nzcc jklup kyv vwwvtk fw zetivrjzex kyv tfetvekirkzfe fw re zfezt tfdgfleu fe tfeultkzmzkp.
shift = 17
IN THIS EXPERIMENT, YOU WILL STUDY THE EFFECT OF INCREASING THE CONCENTRATION OF AN IONIC COMPOUND ON CONDUCTIVITY.
Solve this following affine:
YOIMDOMCFSEBIQN
Where N=D and D=N
(It may appear at first that the question is unsolvable due to the a value not being coprime to 26, but the question is actually solveable).
Edit: also something interesting- the encryption key and decryption key are the same.
South Woods MS, Syosset HS '21
BirdSO TD/ES
Past Events: Microbe, Invasive, Matsci, Fermi, Astro, Code, Fossils 
1st place MIT Codebusters 2019-2020
1st place NYS Fermi Questions (2019), Astronomy and Codebusters (2021)
Science Olympiad Founder's Scholarship winner
Top
UTF-8 U+6211 U+662F
Exalted Member
Exalted Member
Posts: 1597
Joined: Sun Jan 18, 2015 7:42 am
Division: C
State: PA
Has thanked: 6 times
Been thanked: 15 times

Re: Codebusters C

Post by UTF-8 U+6211 U+662F »

Name wrote:
olivia.m19 wrote:Here's an excerpt from the lab I did in chem class today, encoded as a Caesar cipher:

Ze kyzj vogvizdvek, pfl nzcc jklup kyv vwwvtk fw zetivrjzex kyv tfetvekirkzfe fw re zfezt tfdgfleu fe tfeultkzmzkp.
shift = 17
IN THIS EXPERIMENT, YOU WILL STUDY THE EFFECT OF INCREASING THE CONCENTRATION OF AN IONIC COMPOUND ON CONDUCTIVITY.
Solve this following affine:
YOIMDOMCFSEBIQN
Where N=D and D=N
(It may appear at first that the question is unsolvable due to the a value not being coprime to 26, but the question is actually solveable).
Edit: also something interesting- the encryption key and decryption key are the same.
is a 12 and b 3?
Top
User avatar
Name
Member
Member
Posts: 434
Joined: Sun Jan 21, 2018 4:41 pm
Division: C
State: NY
Pronouns: He/Him/His
Has thanked: 49 times
Been thanked: 46 times

Re: Codebusters C

Post by Name »

UTF-8 U+6211 U+662F wrote:
Name wrote:
olivia.m19 wrote:Here's an excerpt from the lab I did in chem class today, encoded as a Caesar cipher:

Ze kyzj vogvizdvek, pfl nzcc jklup kyv vwwvtk fw zetivrjzex kyv tfetvekirkzfe fw re zfezt tfdgfleu fe tfeultkzmzkp.
shift = 17
IN THIS EXPERIMENT, YOU WILL STUDY THE EFFECT OF INCREASING THE CONCENTRATION OF AN IONIC COMPOUND ON CONDUCTIVITY.
Solve this following affine:
YOIMDOMCFSEBIQN
Where N=D and D=N
(It may appear at first that the question is unsolvable due to the a value not being coprime to 26, but the question is actually solveable).
Edit: also something interesting- the encryption key and decryption key are the same.
is a 12 and b 3?
No 
solve for B value first
South Woods MS, Syosset HS '21
BirdSO TD/ES
Past Events: Microbe, Invasive, Matsci, Fermi, Astro, Code, Fossils 
1st place MIT Codebusters 2019-2020
1st place NYS Fermi Questions (2019), Astronomy and Codebusters (2021)
Science Olympiad Founder's Scholarship winner
Top
UTF-8 U+6211 U+662F
Exalted Member
Exalted Member
Posts: 1597
Joined: Sun Jan 18, 2015 7:42 am
Division: C
State: PA
Has thanked: 6 times
Been thanked: 15 times

Re: Codebusters C

Post by UTF-8 U+6211 U+662F »

Name wrote:
UTF-8 U+6211 U+662F wrote:
Name wrote: 
IN THIS EXPERIMENT, YOU WILL STUDY THE EFFECT OF INCREASING THE CONCENTRATION OF AN IONIC COMPOUND ON CONDUCTIVITY.
Solve this following affine:
YOIMDOMCFSEBIQN
Where N=D and D=N
(It may appear at first that the question is unsolvable due to the a value not being coprime to 26, but the question is actually solveable).
Edit: also something interesting- the encryption key and decryption key are the same.
is a 12 and b 3?
No 
solve for B value first
SCIENCEOLYMPIAD
Encrypt this text with a Caesar shift of 17: WOW THAT TOOK ME WAY TOO LONG
Top
User avatar
olivia.m19
Member
Member
Posts: 43
Joined: Sun Nov 11, 2018 9:11 am
Division: C
State: VA
Has thanked: 5 times
Been thanked: 2 times

Re: Codebusters C

Post by olivia.m19 »

UTF-8 U+6211 U+662F wrote: Encrypt this text with a Caesar shift of 17: WOW THAT TOOK ME WAY TOO LONG
NFN KYRK KFFB DV NRP KFF CFEX
2020-21 snrszn lets goooo :-P
SOLVI/CMU/UChicago/Reg
Code: yikes/-/-/- Digital Structures: -/-/-/- Machines: yikes/-/-/- Sounds: yikes/-/-/-

2019-20
CMU/Reg/SOUP/State/Nat
Boomi: 4/4/-/-/- Code: 1/1/4/?/? Sounds: 1/1/3/?/? PPP: -/-/38/?/?
Top
UTF-8 U+6211 U+662F
Exalted Member
Exalted Member
Posts: 1597
Joined: Sun Jan 18, 2015 7:42 am
Division: C
State: PA
Has thanked: 6 times
Been thanked: 15 times

Re: Codebusters C

Post by UTF-8 U+6211 U+662F »

olivia.m19 wrote:
UTF-8 U+6211 U+662F wrote: Encrypt this text with a Caesar shift of 17: WOW THAT TOOK ME WAY TOO LONG
NFN KYRK KFFB DV NRP KFF CFEX
Yep, your turn
Top
User avatar
olivia.m19
Member
Member
Posts: 43
Joined: Sun Nov 11, 2018 9:11 am
Division: C
State: VA
Has thanked: 5 times
Been thanked: 2 times

Re: Codebustews C

Post by olivia.m19 »

Decrypt this Vigenere cipher, with key UWU

isi qdun’o nbem? bwjju ujscq biis’m xws!

(i’m very sorry lmao)
(There are some slang terms/kind-of-errors)
Last edited by olivia.m19 on Mon Apr 01, 2019 9:26 am, edited 1 time in total.
2020-21 snrszn lets goooo :-P
SOLVI/CMU/UChicago/Reg
Code: yikes/-/-/- Digital Structures: -/-/-/- Machines: yikes/-/-/- Sounds: yikes/-/-/-

2019-20
CMU/Reg/SOUP/State/Nat
Boomi: 4/4/-/-/- Code: 1/1/4/?/? Sounds: 1/1/3/?/? PPP: -/-/38/?/?
Top
User avatar
jimmy-bond
Member
Member
Posts: 417
Joined: Mon Jan 08, 2018 11:25 pm
Division: Grad
State: OH
Pronouns: He/Him/His
Has thanked: 11 times
Been thanked: 10 times

We: Codebustews C

Post by jimmy-bond »

olivia.m19 wrote:Decrypt this Vigenere cipher, with key UWU

isi qdun’o nbem? bwjju ujscq biis’m xws!

(i’m very sorry lmao)
There may be an issue solving here due to the April Fool's thing.
PCHS, HI '21 | CWRU, OH '25
Code(16), DD(40), FQ(39),4&6(36), WQ(27)
CriB(26), DP (11), FF(1), MM(14), P&P(6)
CriB(36), DD(35), FF(2), MM(20)
Top
User avatar
olivia.m19
Member
Member
Posts: 43
Joined: Sun Nov 11, 2018 9:11 am
Division: C
State: VA
Has thanked: 5 times
Been thanked: 2 times

Re: We: Codebustews C

Post by olivia.m19 »

jimmy-bond wrote:
olivia.m19 wrote:Decrypt this Vigenere cipher, with key UWU

isi qdun’o nbem? bwjju ujscq biis’m xws!

(i’m very sorry lmao)
thewe may be an issue solving hewe due to the apwiw foow's thing.
I doubled checked, it should work. However, I edited my post bc there are some details i forgot to mention oops
2020-21 snrszn lets goooo :-P
SOLVI/CMU/UChicago/Reg
Code: yikes/-/-/- Digital Structures: -/-/-/- Machines: yikes/-/-/- Sounds: yikes/-/-/-

2019-20
CMU/Reg/SOUP/State/Nat
Boomi: 4/4/-/-/- Code: 1/1/4/?/? Sounds: 1/1/3/?/? PPP: -/-/38/?/?
Top
User avatar
dragonfruit35
Exalted Member
Exalted Member
Posts: 296
Joined: Sat Feb 28, 2015 7:49 am
Division: Grad
State: VA
Pronouns: She/Her/Hers
Has thanked: 7 times
Been thanked: 1 time

We: Codebustews C

Post by dragonfruit35 »

olivia.m19 wrote:Decrypt this Vigenere cipher, with key UWU

isi qdun’o nbem? bwjju ujscq biis’m xws!

(i’m very sorry lmao)
(thewe awe some slang terms/kind-of-errors)
owo what’s this? happy apwiw foow’s day!
tjhsst '20
virginia tech '24
2x codebusters national medalist

"it's not a pen, it's a principle!" - annie edison
Top

Return to “2019 Question Marathons”