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Re: Codebusters C
Posted: January 29th, 2020, 8:25 pm
by Umaroth
ET2020 wrote: ↑January 29th, 2020, 8:22 pm
Does anyone know of some invitational tests that had an RSA question? The only one I've been able to find so far is Cornell.
MIT had one and I believe Carnegie Mellon.
Re: Codebusters C
Posted: January 29th, 2020, 9:12 pm
by Name
Umaroth wrote: ↑January 29th, 2020, 8:25 pm
ET2020 wrote: ↑January 29th, 2020, 8:22 pm
Does anyone know of some invitational tests that had an RSA question? The only one I've been able to find so far is Cornell.
MIT had one and I believe Carnegie Mellon.
Duke also had one.
Cornell's RSA was kinda dumb due to it not being toebes format. Also Duke's numbers used were too large to feasibly solve with 4 function calcs (it was toebes format tho).
If you want practice I suggest going on toebes and generating your own question. It doesn't really matter if you know the answer, as long as you can get the answer, so invite tests are semi useless for RSA practice.
Re: Codebusters C
Posted: January 30th, 2020, 9:30 am
by MacintoshJosh
Name wrote: ↑January 29th, 2020, 9:12 pm
Umaroth wrote: ↑January 29th, 2020, 8:25 pm
ET2020 wrote: ↑January 29th, 2020, 8:22 pm
Does anyone know of some invitational tests that had an RSA question? The only one I've been able to find so far is Cornell.
MIT had one and I believe Carnegie Mellon.
Duke also had one.
Cornell's RSA was kinda dumb due to it not being toebes format. Also Duke's numbers used were too large to feasibly solve with 4 function calcs (it was toebes format tho).
If you want practice I suggest going on toebes and generating your own question. It doesn't really matter if you know the answer, as long as you can get the answer, so invite tests are semi useless for RSA practice.
Carnegie Mellon didn't actually have an RSA cipher, just a bunch of funky questions. Also, Duke
did have another RSA question that was solvable, if you were wondering ET.
Since the Duke test used Toebes, and it still generated those numbers, should we contact Toebes to maybe limit the digits that the RSA cipher generates?
Re: Codebusters C
Posted: January 30th, 2020, 1:55 pm
by builderguy135
ET2020 wrote: ↑January 29th, 2020, 8:22 pm
Does anyone know of some invitational tests that had an RSA question? The only one I've been able to find so far is Cornell.
Go into whatever test dump folder you have and search for "rsa". This works for Google Drive at least.
Re: Codebusters C
Posted: January 31st, 2020, 9:18 am
by jlamslam
MacintoshJosh wrote: ↑January 30th, 2020, 9:30 am
Name wrote: ↑January 29th, 2020, 9:12 pm
Umaroth wrote: ↑January 29th, 2020, 8:25 pm
MIT had one and I believe Carnegie Mellon.
Duke also had one.
Cornell's RSA was kinda dumb due to it not being toebes format. Also Duke's numbers used were too large to feasibly solve with 4 function calcs (it was toebes format tho).
If you want practice I suggest going on toebes and generating your own question. It doesn't really matter if you know the answer, as long as you can get the answer, so invite tests are semi useless for RSA practice.
Carnegie Mellon didn't actually have an RSA cipher, just a bunch of funky questions. Also, Duke
did have another RSA question that was solvable, if you were wondering ET.
Since the Duke test used Toebes, and it still generated those numbers, should we contact Toebes to maybe limit the digits that the RSA cipher generates?
I believe on Toebes you can choose the number of digits you want to make the primes. So I think it's just up to the event supervisor's discretion if they want to be mean or not.
Re: Codebusters C
Posted: January 31st, 2020, 9:46 am
by Name
jlamslam wrote: ↑January 31st, 2020, 9:18 am
MacintoshJosh wrote: ↑January 30th, 2020, 9:30 am
Name wrote: ↑January 29th, 2020, 9:12 pm
Duke also had one.
Cornell's RSA was kinda dumb due to it not being toebes format. Also Duke's numbers used were too large to feasibly solve with 4 function calcs (it was toebes format tho).
If you want practice I suggest going on toebes and generating your own question. It doesn't really matter if you know the answer, as long as you can get the answer, so invite tests are semi useless for RSA practice.
Carnegie Mellon didn't actually have an RSA cipher, just a bunch of funky questions. Also, Duke
did have another RSA question that was solvable, if you were wondering ET.
Since the Duke test used Toebes, and it still generated those numbers, should we contact Toebes to maybe limit the digits that the RSA cipher generates?
I believe on Toebes you can choose the number of digits you want to make the primes. So I think it's just up to the event supervisor's discretion if they want to be mean or not.
There's no point in making questions that cannot be solved. As most teams are using 8 digit 4 function calculators, all possible RSA questions should be doable with the 8 digit 4 function calculators.
Re: Codebusters C
Posted: February 3rd, 2020, 1:51 pm
by ckenn4189
Help! I need to know the difference between K1 and K2 alphabets! I just need help with monoalphabetic substitution overall please!!! Can anyone help me? I would really appreciate it!
Re: Codebusters C
Posted: February 3rd, 2020, 8:01 pm
by jimmy-bond
ckenn4189 wrote: ↑February 3rd, 2020, 1:51 pm
Help! I need to know the difference between K1 and K2 alphabets! I just need help with monoalphabetic substitution overall please!!! Can anyone help me? I would really appreciate it!
As most people would say, the keyword for K1 is in the plaintext while for K2, it's in the ciphertext. I found these pretty easy to understand in you try to make a test on toebes and use the two alphabets to see how it works. I tried explaining it to my teammates but did a terrible job, so I recommend toebes as an explanation.
Re: Codebusters C
Posted: February 4th, 2020, 1:09 pm
by ckenn4189
jimmy-bond wrote: ↑February 3rd, 2020, 8:01 pm
ckenn4189 wrote: ↑February 3rd, 2020, 1:51 pm
Help! I need to know the difference between K1 and K2 alphabets! I just need help with monoalphabetic substitution overall please!!! Can anyone help me? I would really appreciate it!
As most people would say, the keyword for K1 is in the plaintext while for K2, it's in the ciphertext. I found these pretty easy to understand in you try to make a test on toebes and use the two alphabets to see how it works. I tried explaining it to my teammates but did a terrible job, so I recommend toebes as an explanation.
Do you think you could walk me through a k1?
https://toebes.com/codebusters/TestPrint.html?test=4
Question number 2 on here
Re: Codebusters C
Posted: February 4th, 2020, 10:20 pm
by jimmy-bond
The question you mentioned is not a K1