FEncryption Namespace Reference

Functions
template<typename IntType >
static IntType	CalculateGCD (IntType ValueA, IntType ValueB)
template<typename IntType >
static IntType	CalculateMultiplicativeInverseOfExponent (IntType Exponent, IntType Totient)
template<typename IntType >
static void	GenerateKeyPair (const IntType &P, const IntType &Q, FEncryptionKey &PublicKey, FEncryptionKey &PrivateKey)
template<typename IntType >
static IntType	ModularPow (IntType Base, IntType Exponent, IntType Modulus)
template<typename IntType >
static void	EncryptBytes (IntType *EncryptedData, const uint8 *Data, const int64 DataLength, const FEncryptionKey &EncryptionKey)
template<typename IntType >
static void	DecryptBytes (uint8 *DecryptedData, const IntType *Data, const int64 DataLength, const FEncryptionKey &DecryptionKey)
static void	EncryptSignature (const FDecryptedSignature &InUnencryptedSignature, FEncryptedSignature &OutEncryptedSignature, const FEncryptionKey &EncryptionKey)
static void	DecryptSignature (const FEncryptedSignature &InEncryptedSignature, FDecryptedSignature &OutUnencryptedSignature, const FEncryptionKey &EncryptionKey)

Detailed Description

Math utils for encryption.

Function Documentation

CalculateGCD()

template<typename IntType >

static IntType FEncryption::CalculateGCD ( IntType ValueA, IntType ValueB )

static

Greatest common divisor of ValueA and ValueB.

Definition at line 1053 of file BigInt.h.

CalculateMultiplicativeInverseOfExponent()

template<typename IntType >

static IntType FEncryption::CalculateMultiplicativeInverseOfExponent ( IntType Exponent, IntType Totient )

static

Multiplicative inverse of exponent using extended GCD algorithm.

Extended gcd: ax + by = gcd(a, b), where a = exponent, b = fi(n), gcd(a, b) = gcd(e, fi(n)) = 1, fi(n) is the Euler's totient function of n We only care to find d = x, which is our multiplicatve inverse of e (a).

Definition at line 1106 of file BigInt.h.

DecryptBytes()

template<typename IntType >

static void FEncryption::DecryptBytes ( uint8 * DecryptedData, const IntType * Data, const int64 DataLength, const FEncryptionKey & DecryptionKey )

static

Decrypts a stream of bytes

Definition at line 1203 of file BigInt.h.

DecryptSignature()

static void FEncryption::DecryptSignature ( const FEncryptedSignature & InEncryptedSignature, FDecryptedSignature & OutUnencryptedSignature, const FEncryptionKey & EncryptionKey )

static

Definition at line 1302 of file BigInt.h.

EncryptBytes()

template<typename IntType >

static void FEncryption::EncryptBytes ( IntType * EncryptedData, const uint8 * Data, const int64 DataLength, const FEncryptionKey & EncryptionKey )

static

Encrypts a stream of bytes

Definition at line 1191 of file BigInt.h.

EncryptSignature()

static void FEncryption::EncryptSignature ( const FDecryptedSignature & InUnencryptedSignature, FEncryptedSignature & OutEncryptedSignature, const FEncryptionKey & EncryptionKey )

static

Definition at line 1297 of file BigInt.h.

GenerateKeyPair()

template<typename IntType >

static void FEncryption::GenerateKeyPair ( const IntType & P, const IntType & Q, FEncryptionKey & PublicKey, FEncryptionKey & PrivateKey )

static

Generate Key Pair for encryption and decryption.

Definition at line 1146 of file BigInt.h.

ModularPow()

template<typename IntType >

static IntType FEncryption::ModularPow ( IntType Base, IntType Exponent, IntType Modulus )

static

Raise Base to power of Exponent in mod Modulus.

Definition at line 1171 of file BigInt.h.