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Any encryption that can be udecrypted and read is eventually crackable. (theoretically at least, it may not be feasible or realistic, but it is doable).
Obviously its possible to encrypt something to the point where it can never be decrypted, but then it would not be worth anything neways.
In order to make a cipher that is unbreakable, it also needs to be un decryptable. (if you use a one time pad and throw away the key, the message will never be decrypted, but will also just be gibberish and also unusable. If you keep the key it can be found and thus used to decrypt the message.
A one time pad also has the problem of using a key as long as the message, and since the key either has to be in plaintext, or be encrypted in a breakable manor, (else regression until the previous statement is true). the key becomes breakable and therefore the message is breakable.
if the key wasnt generated randomly, then it is mathematically breakable via cryptology.
Mathematically unbreakable and theoretically unbreakable are different ideas.
A one time pad is the closest I know of to being unbreakable, as the only known solution is "get the key," but that is still a viable solution.
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[–] Fortune-5Billion ago (edited ago)
Any encryption that can be udecrypted and read is eventually crackable. (theoretically at least, it may not be feasible or realistic, but it is doable).
Obviously its possible to encrypt something to the point where it can never be decrypted, but then it would not be worth anything neways.
[–] HexTree ago
Well no, clearly one time pad is a case that is uncrackable.
[–] Fortune-5Billion ago (edited ago)
In order to make a cipher that is unbreakable, it also needs to be un decryptable. (if you use a one time pad and throw away the key, the message will never be decrypted, but will also just be gibberish and also unusable. If you keep the key it can be found and thus used to decrypt the message.
A one time pad also has the problem of using a key as long as the message, and since the key either has to be in plaintext, or be encrypted in a breakable manor, (else regression until the previous statement is true). the key becomes breakable and therefore the message is breakable.
if the key wasnt generated randomly, then it is mathematically breakable via cryptology.
Mathematically unbreakable and theoretically unbreakable are different ideas.
A one time pad is the closest I know of to being unbreakable, as the only known solution is "get the key," but that is still a viable solution.