Crypto++
5.6.3
Free C++ class library of cryptographic schemes
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Applies the inverse of the trapdoor function. More...
Public Member Functions | |
Integer | CalculateRandomizedInverse (RandomNumberGenerator &rng, const Integer &x) const |
Applies the inverse of the trapdoor function. More... | |
bool | IsRandomized () const |
Determines if the decryption algorithm is randomized. More... | |
virtual Integer | CalculateInverse (RandomNumberGenerator &rng, const Integer &x) const =0 |
Applies the inverse of the trapdoor function.
CalculateInverse()
is the foundation for decrypting a message under a private key in a public key cryptosystem. Derived classes will override it at some point.
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inlinevirtual |
Applies the inverse of the trapdoor function.
rng | a RandomNumberGenerator derived class |
x | the message on which the decryption function is applied |
x
decrypted under the private keyCalculateRandomizedInverse
is a generalization of decryption using the private key
Internally, CalculateRandomizedInverse()
calls CalculateInverse()
without the RandomNumberGenerator
.
Implements RandomizedTrapdoorFunctionInverse.
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inlinevirtual |
Determines if the decryption algorithm is randomized.
true
if the decryption algorithm is randomized, false
otherwiseIf IsRandomized()
returns false
, then NullRNG()
can be used.
Reimplemented from RandomizedTrapdoorFunctionInverse.