The one-time pad, subject to the three rules, is the only mathematically proven unbreakable crypto system. Claude Shannon proved that any solution to the cipher is as equally likely as any other.
The three rules:
The pad must be created with truly random numbers.
The pad must remain secure, only two copies of each pad can exist, one for Bob and one for Alice.
The pad must never be re-used.
The one-time pad, subject to the three rules, is the only mathematically proven unbreakable crypto system. Claude Shannon proved that any solution to the cipher is as equally likely as any other.
The three rules:
The pad must be created with truly random numbers.
The pad must remain secure, only two copies of each pad can exist, one for Bob and one for Alice.
The pad must never be re-used.
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