A xenocrypt is a cipher in a foreign language, although this could inadvertently imply the possibility of xenocrypts in languages besides Spanish being allowed (which is probably not the intention) - I don't know whether another part of the rules is more explicit about that though.Rule 3.e.vi says "Xenocrypt - no more than one cryptogram can be in Spanish"
What does this rule mean besides that the cryptogram will be in Spanish.
I think that the intent of the rules is that xenocrypts are in Spanish only.A xenocrypt is a cipher in a foreign language, although this could inadvertently imply the possibility of xenocrypts in languages besides Spanish being allowed (which is probably not the intention) - I don't know whether another part of the rules is more explicit about that though.Rule 3.e.vi says "Xenocrypt - no more than one cryptogram can be in Spanish"
What does this rule mean besides that the cryptogram will be in Spanish.
A post was made on Soinc FAQ addressing xenocrypts.I think that the intent of the rules is that xenocrypts are in Spanish only.A xenocrypt is a cipher in a foreign language, although this could inadvertently imply the possibility of xenocrypts in languages besides Spanish being allowed (which is probably not the intention) - I don't know whether another part of the rules is more explicit about that though.Rule 3.e.vi says "Xenocrypt - no more than one cryptogram can be in Spanish"
What does this rule mean besides that the cryptogram will be in Spanish.
However, prepare for anything, and a liberal reading of the rules could allow for cryptograms in French, Spanish, etc., as well as Hill, Atbash, Affine, or Vignere ciphers - given that no letter encrypts to itself.
They can test a hill cipher so that when given a hill cipher matrix they can ask find the inverse key of the matrix or given 4 plaintext crib find the keyI was reading the rules to make sure I wasn't wasting to much time reading about the state/nats ciphers, and noticed that for the hill cipher it states, "Mathematical Cryptanalysis of the Hill Cipher - either producing a decryption matrix given a 2x2 encryption matrix or computing a decryption matrix given 4 plaintext-ciphertext letter pairs." What does this rule even mean.
Thanks
Thanks, for the help.They can test a hill cipher so that when given a hill cipher matrix they can ask find the inverse key of the matrix or given 4 plaintext crib find the keyI was reading the rules to make sure I wasn't wasting to much time reading about the state/nats ciphers, and noticed that for the hill cipher it states, "Mathematical Cryptanalysis of the Hill Cipher - either producing a decryption matrix given a 2x2 encryption matrix or computing a decryption matrix given 4 plaintext-ciphertext letter pairs." What does this rule even mean.
Thanks
So like they can asks find the inverse of
|1 2|
|3 7|
or something like that (usually in order to then decode something)
Or they can ask something like
if the plain text abcd corresponds to the ciphertext efgh find the key used to encrypt/decrypt it
Just ask someone to create one for you. It only takes a minute to make.I was wondering if anyone has any good sources for practice with Spanish Xenocrypts? I can't seem to find anything on the internet...
That’s because RSA isn’t on the list of invy/regs ciphers in the rules- it’s listed in the section to be used at state competitions and NatsI haven't ever seen questions related to RSA on any invite test so far
Wait, why is it nearly impossible to encode/decode with a 5 function calculatorI haven't ever seen questions related to RSA on any invite test so far, and it seems nearly impossible to encode/decode with only a 5 function calculator. Is the only thing that can be realistically tested is to find the decryption key given the encryption key?
RSA deals with encrypting/decrypting using exponents, which can get very large. Smaller exponents are doable but I don’t know if 4/5 function calculators can even handle going to such high numbers.Wait, why is it nearly impossible to encode/decode with a 5 function calculatorI haven't ever seen questions related to RSA on any invite test so far, and it seems nearly impossible to encode/decode with only a 5 function calculator. Is the only thing that can be realistically tested is to find the decryption key given the encryption key?
(Forgive me, I don't really do this event)
Presumably they won't use large exponents on the test (otherwise, the code would be very hard to decipher!). However, since RSA uses modular arithmetic, you can use various tricks to get smaller numbers after exponentiation.RSA deals with encrypting/decrypting using exponents, which can get very large. Smaller exponents are doable but I don’t know if 4/5 function calculators can even handle going to such high numbers.Wait, why is it nearly impossible to encode/decode with a 5 function calculatorI haven't ever seen questions related to RSA on any invite test so far, and it seems nearly impossible to encode/decode with only a 5 function calculator. Is the only thing that can be realistically tested is to find the decryption key given the encryption key?
(Forgive me, I don't really do this event)
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