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49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
// Copyright 1998-2018 Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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#include "Math/BigInt.h"
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/**
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* Encryption keys: public and private
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*/
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struct FKeyPair
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{
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/** Public decryption key */
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FEncryptionKey PublicKey;
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/** Private encryption key */
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FEncryptionKey PrivateKey;
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friend FArchive& operator<<(FArchive& Ar, FKeyPair& Pair)
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{
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Ar << Pair.PublicKey.Exponent;
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Ar << Pair.PublicKey.Modulus;
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Ar << Pair.PrivateKey.Exponent;
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Ar << Pair.PrivateKey.Modulus;
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return Ar;
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}
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bool IsValid() const
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{
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return !PrivateKey.Exponent.IsZero()
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&& !PrivateKey.Modulus.IsZero()
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&& !PublicKey.Exponent.IsZero()
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&& !PublicKey.Modulus.IsZero();
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}
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};
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/**
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* Generates a prime number table where the max prime number value is less than MaxValue
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*/
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void GeneratePrimeNumberTable(int64 MaxValue, const TCHAR* Filename);
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/**
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* Generates a file with the encryption keys
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*/
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bool GenerateKeys(const TCHAR* KeyFilename);
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bool SaveKeysToFile(const FKeyPair& Keys, const TCHAR* KeyFilename);
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bool ReadKeysFromFile(const TCHAR* KeyFilename, FKeyPair& OutKeys);
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bool TestKeys(FKeyPair& Pair);
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