Linear Congruential Generator (LCG) More...
#include <rng.h>
Inheritance diagram for LC_RNG:
Public Member Functions | |
| LC_RNG (word32 init_seed) | |
| Construct a Linear Congruential Generator (LCG) | |
| void | GenerateBlock (byte *output, size_t size) |
| Generate random array of bytes. | |
| word32 | GetSeed () |
 Public Member Functions inherited from RandomNumberGenerator | |
| virtual void | IncorporateEntropy (const byte *input, size_t length) |
| Update RNG state with additional unpredictable values. | |
| virtual bool | CanIncorporateEntropy () const |
| Determines if a generator can accept additional entropy. | |
| virtual byte | GenerateByte () |
| Generate new random byte and return it. | |
| virtual unsigned int | GenerateBit () |
| Generate new random bit and return it. | |
| virtual word32 | GenerateWord32 (word32 min=0, word32 max=0xffffffffUL) |
| Generate a random 32 bit word in the range min to max, inclusive. | |
| virtual void | GenerateIntoBufferedTransformation (BufferedTransformation &target, const std::string &channel, lword length) |
| Generate random bytes into a BufferedTransformation. | |
| virtual void | DiscardBytes (size_t n) |
| Generate and discard n bytes. | |
| template<class IT > | |
| void | Shuffle (IT begin, IT end) |
| Randomly shuffle the specified array. | |
| Public Member Functions inherited from Algorithm | |
| Algorithm (bool checkSelfTestStatus=true) | |
| Interface for all crypto algorithms. | |
| virtual std::string | AlgorithmName () const |
| Provides the name of this algorithm. | |
| virtual std::string | AlgorithmProvider () const |
| Retrieve the provider of this algorithm. | |
| Public Member Functions inherited from Clonable | |
| virtual Clonable * | Clone () const |
| Copies this object. | |
Detailed Description
Linear Congruential Generator (LCG)
Originally propsed by William S. England.
- Warning
- LC_RNG is suitable for simulations, where uniformaly distributed numbers are required quickly. It should not be used for cryptographic purposes.
Constructor & Destructor Documentation
◆ LC_RNG()
|
inline |
Member Function Documentation
◆ GenerateBlock()
|
virtual |
Generate random array of bytes.
- Parameters
-
output the byte buffer size the length of the buffer, in bytes
All generated values are uniformly distributed over the range specified within the the constraints of a particular generator.
- Note
- A derived generator must override either GenerateBlock() or GenerateIntoBufferedTransformation(). They can override both, or have one call the other.
Reimplemented from RandomNumberGenerator.
◆ GetSeed()
The documentation for this class was generated from the following files:
