CongminhTran wrote:Hey guys,
I was just wondering if any of you guys could help me with the Hill Cipher, both decryption and encryption?
For encryption, how do you make an encryption matrix given plaintext- ciphertext letter pairs?
For decryption, how do you make a decryption matrix given plaintext-ciphertext letter pairs? Also, how do you decrypt when given a key and some ciphertext? Lastly, what if they ask you to produce a decryption matrix given only some plaintext (with number values all arranged in a matrix)? I was asking because at the Regionals test for my school, a couple of Hill Cipher questions where you had to produce A (the other one was THE) decryption matrix showed up, and we had no idea on how to do them.
If you guys could try to help, I would very much appreciate that!
KITN1931 wrote:Can someone give me tips on solving patristocrats????
TheWood wrote:Sorry mb for not posting earlier.
Find the inverse of the following hill encryption key:
BRA
CEL
ETS
Name wrote:(I kinda stole this question, but I really liked the way they presented the Bacon cipher)
ADELE DEALT DEREK LAMPS DATED AS THE BLUNT CELLO DEALT FREED ACTORS GETS A DEATH FLYER EAGLE A YEAR YELLS OFTEN A ROAD
The first 4 letters in the ciphertext is "real"
dragonfruit35 wrote:Name wrote:(I kinda stole this question, but I really liked the way they presented the Bacon cipher)
ADELE DEALT DEREK LAMPS DATED AS THE BLUNT CELLO DEALT FREED ACTORS GETS A DEATH FLYER EAGLE A YEAR YELLS OFTEN A ROAD
The first 4 letters in the ciphertext is "real"
Hmmm... KINDA...
- Answer
PS: I think you added an extra "S" at the end of ACTORS, because that makes six letters in the group.
starfruit wrote:the e-field equals zero inside a conductor that is in static equilibrium
starfruit wrote:Translate the following message into Affine when x=12 and y=3
skittles-taste the rainbow
UTF-8 U+6211 U+662F wrote:starfruit wrote:Translate the following message into Affine when x=12 and y=3
skittles-taste the rainbow
- Answer
Anomaly wrote:UTF-8 U+6211 U+662F wrote:starfruit wrote:Translate the following message into Affine when x=12 and y=3
skittles-taste the rainbow
- Answer
wait, is it me or is that not a valid key? i thought that x can't be coprime with 26 or else it leads to letters being repeated...
Riptide wrote:Anomaly wrote:UTF-8 U+6211 U+662F wrote:
- Answer
wait, is it me or is that not a valid key? i thought that x can't be coprime with 26 or else it leads to letters being repeated...
yeah I believe the letters would start repeating after half of the alphabet?
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