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| // Gets the unsigned char at specified postion, position based in array of unsigned char
unsigned char* BaseCryptoRandomStream::GetUCAddressPosition(unsigned long int pos) {
if ( pos >= this->GetUCLength() )
return NULL;
else
return (unsigned char *)(&(this->cryptoStream[pos * sizeof(unsigned char)]));
}
// Gets the unsigned short at specified postion, position based in array of unsigned short
unsigned short int* BaseCryptoRandomStream::GetUSAddressPosition(unsigned long int pos) {
if ( pos >= this->GetUSLength() )
return NULL;
else
return (unsigned short int *)(&(this->cryptoStream[pos * sizeof(unsigned short int)]));
}
// Gets the unsigned long at specified postion, position based in array of unsigned long
unsigned long int* BaseCryptoRandomStream::GetULAddressPosition(unsigned long int pos) {
if ( pos >= this->GetULLength() )
return NULL;
else
return (unsigned long int *)(&(this->cryptoStream[pos * sizeof(unsigned long int)]));
}
// Gets the unsigned 64 bit at specified postion, position based in array of unsigned 64 bit
unsigned __int64* BaseCryptoRandomStream::Get64AddressPosition(unsigned __int64 pos) {
if ( pos >= this->Get64Length() )
return NULL;
else
return (unsigned __int64 *)(&(this->cryptoStream[pos * sizeof(unsigned __int64)]));
}
// Gets the baseCryptoRandomStream portion at specified postion with
// from baseCryptoRandomStream object, position and length based in array of unsigned char
void BaseCryptoRandomStream::GetUCSubRandomStream(BaseCryptoRandomStream* subStream, unsigned long int pos) {
try {
if ( pos >= this->GetUCLength() ) {
throw "Positions exceeded stream length !";
}
else {
subStream->bitLength = this->GetBitLength() - (pos * BYTEBITS);
subStream->cryptoStream = (bitItem *)(&(this->cryptoStream[pos * sizeof(unsigned char)]));
}
}
catch (char* str) {
throw str;
}
}
// Gets the baseCryptoRandomStream portion at specified postion
// from baseCryptoRandomStream object, position and length based in array of unsigned short int
void BaseCryptoRandomStream::GetUSSubRandomStream(BaseCryptoRandomStream* subStream, unsigned long int pos) {
try {
if ( pos >= this->GetUSLength() ) {
throw "Positions exceeded stream length !";
}
else {
subStream->bitLength = this->GetBitLength() - (pos * BYTEBITS * sizeof(unsigned short int));
subStream->cryptoStream = (bitItem *)(&(this->cryptoStream[pos * sizeof(unsigned short int)]));
}
}
catch (char* str) {
throw str;
}
}
// Gets the baseCryptoRandomStream portion at specified postion
// from baseCryptoRandomStream object, position and length based in array of unsigned long int
void BaseCryptoRandomStream::GetULSubRandomStream(BaseCryptoRandomStream* subStream, unsigned long int pos) {
try {
if ( pos >= this->GetULLength() ) {
throw "Positions exceeded stream length !";
}
else {
subStream->bitLength = this->GetBitLength() - (pos * BYTEBITS * sizeof(unsigned long int));
subStream->cryptoStream = (bitItem *)(&(this->cryptoStream[pos * sizeof(unsigned long int)]));
}
}
catch (char* str) {
throw str;
}
}
// Gets the baseCryptoRandomStream portion at specified postion with a specified length
// from baseCryptoRandomStream object, position and length based in array of unsigned char
void BaseCryptoRandomStream::GetUCSubRandomStream(BaseCryptoRandomStream* subStream, unsigned long int pos, unsigned long int length) {
try {
if ( pos >= this->GetUCLength() ) {
throw "Positions exceeded stream length !";
}
else {
if ( (pos + length) > (this->GetBitLength() / (BYTEBITS * sizeof(unsigned char))) ) {
throw "Positions plus length exceeded stream length !";
}
else {
subStream->bitLength = length * BYTEBITS;
subStream->cryptoStream = (bitItem *)(&(this->cryptoStream[pos * sizeof(unsigned char)]));
}
}
}
catch (char* str) {
throw str;
}
}
// Gets the baseCryptoRandomStream portion at specified postion with a specified length
// from baseCryptoRandomStream object, position and length based in array of unsigned short int
void BaseCryptoRandomStream::GetUSSubRandomStream(BaseCryptoRandomStream* subStream, unsigned long int pos, unsigned long int length) {
try {
if ( pos >= this->GetUSLength() ) {
throw "Positions exceeded stream length !";
}
else {
if ( (pos + length) > (this->GetBitLength() / (BYTEBITS * sizeof(unsigned short int))) ) {
throw "Positions plus length exceeded stream length !";
}
else {
subStream->bitLength = length * BYTEBITS * sizeof(unsigned short int);
subStream->cryptoStream = (bitItem *)(&(this->cryptoStream[pos * sizeof(unsigned short int)]));
}
}
}
catch (char* str) {
throw str;
}
}
// Gets the baseCryptoRandomStream portion at specified postion with a specified length
// from baseCryptoRandomStream object, position and length based in array of unsigned long int
void BaseCryptoRandomStream::GetULSubRandomStream(BaseCryptoRandomStream* subStream, unsigned long int pos, unsigned long int length) {
try {
if ( pos >= this->GetULLength() ) {
throw "Positions exceeded stream length !";
}
else {
if ( (pos + length) > (this->GetBitLength() / (BYTEBITS * sizeof(unsigned long int))) ) {
throw "Positions plus length exceeded stream length !";
}
else {
subStream->bitLength = length * BYTEBITS * sizeof(unsigned long int);
subStream->cryptoStream = (bitItem *)(&(this->cryptoStream[pos * sizeof(unsigned long int)]));
}
}
}
catch (char* str) {
throw str;
}
}
// Reduces considered length of BaseCryptoRandomStream, real length is mantained,
// but any access to BaseCryptoRandomStream through the interface will be limited to
// the new considered length. BaseCryptoRandomStream will remain with its original
// length and using the specified memory.
// Reduces length in bits.
void BaseCryptoRandomStream::ReduceBitLength(unsigned long int value) {
if ( this->reducedBitLength ) {
this->reducedBitLength -= value;
}
else {
this->reducedBitLength = this->bitLength - value;
}
}
// Reduces considered length of BaseCryptoRandomStream, real length is mantained,
// but any access to BaseCryptoRandomStream through the interface will be limited to
// the new considered length. BaseCryptoRandomStream will remain with its original
// length and using the specified memory.
// Reduces length in unsigned chars.
void BaseCryptoRandomStream::ReduceUCLength(unsigned long int value) {
if ( this->reducedBitLength ) {
this->reducedBitLength -= (value * BYTEBITS);
}
else {
this->reducedBitLength = this->bitLength - (value * BYTEBITS);
}
}
// Reduces considered length of BaseCryptoRandomStream, real length is mantained,
// but any access to BaseCryptoRandomStream through the interface will be limited to
// the new considered length. BaseCryptoRandomStream will remain with its original
// length and using the specified memory.
// Reduces length in unsigned short ints.
void BaseCryptoRandomStream::ReduceUSLength(unsigned long int value) {
if ( this->reducedBitLength ) {
this->reducedBitLength -= (value * BYTEBITS * sizeof(unsigned short int));
}
else {
this->reducedBitLength = this->bitLength - (value * BYTEBITS * sizeof(unsigned short int));
}
}
// Reduces considered length of BaseCryptoRandomStream, real length is mantained,
// but any access to BaseCryptoRandomStream through the interface will be limited to
// the new considered length. BaseCryptoRandomStream will remain with its original
// length and using the specified memory.
// Reduces length in unsigned long ints.
void BaseCryptoRandomStream::ReduceULLength(unsigned long int value) {
if ( this->reducedBitLength ) {
this->reducedBitLength -= (value * BYTEBITS * sizeof(unsigned long int));
}
else {
this->reducedBitLength = this->bitLength - (value * BYTEBITS * sizeof(unsigned long int));
}
}
// Indicates if BaseCryptoRandomStream's length has been reduced in a
// fictitious way
bool BaseCryptoRandomStream::ReducedLength(void) {
return (this->reducedBitLength != 0);
}
// Restores original length of BaseCryptoRandomStream and removes any
// fictitious reduced length
void BaseCryptoRandomStream::RestoreLength(void) {
this->reducedBitLength = 0;
}
// Operator equal, compares the BaseCryptoRandomStream object with the
// BaseCryptoRandomStream parameter
bool BaseCryptoRandomStream::Equals(BaseCryptoRandomStream* otherStream) {
if (otherStream == NULL) {
return false;
}
else {
if (this->GetBitLength() != otherStream->GetBitLength()) {
return false;
}
else {
return (! memcmp(this->cryptoStream, otherStream->cryptoStream, this->GetUCLength()));
}
}
}
// Operator copy, copies the content of BaseCryptoRandomStream object
// to the BaseCryptoRandomStream object passed as parameter
void BaseCryptoRandomStream::Copy(BaseCryptoRandomStream* target) {
try {
if ( this->GetUCLength() != target->GetUCLength() )
throw "Streams have different lengths !";
else {
memcpy(target->cryptoStream, this->cryptoStream, this->GetUCLength());
}
}
catch (char* str) {
throw str;
}
}
}
}
|
HashDigester 3.0.0.1 
