Codebusters C

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Riptide
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Re: Codebusters C

Postby Riptide » March 20th, 2019, 8:25 pm

Next question:

Caesar shift, decrypt this questionably translated quote from Albert Camus: "CXMJH, VJVJW MRNM. XA VJHKN HNBCNAMJH; R LJW'C KN BDAN."
TODAY, MAMAN(?) DIED. OR MAYBE YESTERDAY; I CAN'T BE SURE
Encode the following word (one letter at a time) using RSA with e = 5 and n = 101.
TREES
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Re: Codebusters C

Postby UTF-8 U+6211 U+662F » March 21st, 2019, 12:17 pm

Next question:

Caesar shift, decrypt this questionably translated quote from Albert Camus: "CXMJH, VJVJW MRNM. XA VJHKN HNBCNAMJH; R LJW'C KN BDAN."
TODAY, MAMAN(?) DIED. OR MAYBE YESTERDAY; I CAN'T BE SURE
Encode the following word (one letter at a time) using RSA with e = 5 and n = 101.
TREES
You're right.

Isn't n supposed to be the product of two primes though?
Also, do you want me to use A=0, B=1, C=2, D=3, ..., Z=25 or convert the letters to ASCII code?

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Re: Codebusters C

Postby Riptide » March 21st, 2019, 12:45 pm

Next question:

Caesar shift, decrypt this questionably translated quote from Albert Camus: "CXMJH, VJVJW MRNM. XA VJHKN HNBCNAMJH; R LJW'C KN BDAN."
TODAY, MAMAN(?) DIED. OR MAYBE YESTERDAY; I CAN'T BE SURE
Encode the following word (one letter at a time) using RSA with e = 5 and n = 101.
TREES
You're right.

Isn't n supposed to be the product of two primes though?
Also, do you want me to use A=0, B=1, C=2, D=3, ..., Z=25 or convert the letters to ASCII code?
Yeah my bad I just chose a random n. n=102 should work? (51*2) and yeah just convert the letters directly (A=0, B=1, etc).
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Re: Codebusters C

Postby UTF-8 U+6211 U+662F » March 21st, 2019, 12:54 pm

TODAY, MAMAN(?) DIED. OR MAYBE YESTERDAY; I CAN'T BE SURE
Encode the following word (one letter at a time) using RSA with e = 5 and n = 101.
TREES
You're right.

Isn't n supposed to be the product of two primes though?
Also, do you want me to use A=0, B=1, C=2, D=3, ..., Z=25 or convert the letters to ASCII code?
Yeah my bad I just chose a random n. n=102 should work? (51*2) and yeah just convert the letters directly (A=0, B=1, etc).
49 17 24 24 18 (Interestingly, 17 and 18 encode to themselves?)

or I guess XRYYS

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Re: Codebusters C

Postby TheWood » March 22nd, 2019, 9:36 am

TODAY, MAMAN(?) DIED. OR MAYBE YESTERDAY; I CAN'T BE SURE
Encode the following word (one letter at a time) using RSA with e = 5 and n = 101.
TREES
You're right.

Isn't n supposed to be the product of two primes though?
Also, do you want me to use A=0, B=1, C=2, D=3, ..., Z=25 or convert the letters to ASCII code?
Yeah my bad I just chose a random n. n=102 should work? (51*2) and yeah just convert the letters directly (A=0, B=1, etc).
51 is not prime.
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Riptide
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Re: Codebusters C

Postby Riptide » March 22nd, 2019, 9:45 am

You're right.

Isn't n supposed to be the product of two primes though?
Also, do you want me to use A=0, B=1, C=2, D=3, ..., Z=25 or convert the letters to ASCII code?
Yeah my bad I just chose a random n. n=102 should work? (51*2) and yeah just convert the letters directly (A=0, B=1, etc).
Riptide has left the server (UTF please ask a question so I can bury this mess) (also I got 4 for E not 24? but then again I clearly don't know RSA or math)
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Re: Codebusters C

Postby UTF-8 U+6211 U+662F » March 22nd, 2019, 11:40 am

Yeah my bad I just chose a random n. n=102 should work? (51*2) and yeah just convert the letters directly (A=0, B=1, etc).
Riptide has left the server (UTF please ask a question so I can bury this mess) (also I got 4 for E not 24? but then again I clearly don't know RSA or math)
*shrug*
Decode IYS ZIJFPE BTXAHCRZ IEKMIZAX, which was encoded using a Vigenere cipher with the keyword PROTEST

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Re: Codebusters C

Postby olivia.m19 » March 22nd, 2019, 5:12 pm

Riptide has left the server (UTF please ask a question so I can bury this mess) (also I got 4 for E not 24? but then again I clearly don't know RSA or math)
*shrug*
Decode IYS ZIJFPE BTXAHCRZ IEKMIZAX, which was encoded using a Vigenere cipher with the keyword PROTEST
THE GERMAN NATIONAL PASTTIME
Duke/Reg/Cornell/State/Nat
Codebusters: 3/1/1/1/? Sounds of Music: 4/2/-/-/- Boomilever: 5/2/9/8/? Fermi Questions: 6/2/11/1/?

2017-18:
Reg/State/Nat
Fermi Questions: 4/-/- Helicopters: 4/-/- Towers: 1/-/-
Wifi Lab: -/4/13 Indoor Bottle Rocket: -/1/- Codebusters: -/-/1

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Re: Codebusters C

Postby UTF-8 U+6211 U+662F » March 22nd, 2019, 6:46 pm

Riptide has left the server (UTF please ask a question so I can bury this mess) (also I got 4 for E not 24? but then again I clearly don't know RSA or math)
*shrug*
Decode IYS ZIJFPE BTXAHCRZ IEKMIZAX, which was encoded using a Vigenere cipher with the keyword PROTEST
THE GERMAN NATIONAL PASTTIME
Yep, your turn

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Re: Codebusters C

Postby olivia.m19 » March 22nd, 2019, 7:09 pm

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
Duke/Reg/Cornell/State/Nat
Codebusters: 3/1/1/1/? Sounds of Music: 4/2/-/-/- Boomilever: 5/2/9/8/? Fermi Questions: 6/2/11/1/?

2017-18:
Reg/State/Nat
Fermi Questions: 4/-/- Helicopters: 4/-/- Towers: 1/-/-
Wifi Lab: -/4/13 Indoor Bottle Rocket: -/1/- Codebusters: -/-/1


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