HFE
Class Multi4Power
java.lang.Object
|
+--HFE.Multi4Power
- class Multi4Power
- extends java.lang.Object
This class deals with multi-variable polynomials and
a general modulus provied to the constructor.
Basicly, this class calculates only powers of the form
q^k where q is the number of elements in the field (here: 4)
and k is a non-negative integer (e.g. 0, 1, 2)
All calculations are done in F_4 (Field4
)
Every entry is a polynomial of the form
f_i(x1,x2,...) = g^i*(b_0 + b_1*x_1 + b_2*x_2 + ... + b_n*x_n)
The reduction is done in the variable g.
- Version:
- 0.1
Method Summary |
Poly4MultiLinear[] |
givePower(int which)
Returns the polynomial vector for a given power which. |
static void |
main(java.lang.String[] args)
Calls the testIt() method |
static void |
testIt()
Tests the functionality of the class. |
Methods inherited from class java.lang.Object |
, clone, equals, finalize, getClass, hashCode, notify, notifyAll, registerNatives, toString, wait, wait, wait |
resArray
private Poly4MultiLinear[][] resArray
- Stores all the results.
Every power has its own polynomials. In resArray[0] are the powers of q^0,
in resArray[1] the powers of q^1, .... resArray[i][0] is the polynomial for the
output for 1, resArray[i][1] for gamma, resArray[i][2] for gamma^2,...
Multi4Power
Multi4Power(Poly4Max modulus,
Poly4MultiLinear[] start,
int maxPower)
- Initializes the internal fields
- Parameters:
modulus
- polynomial over F_4 for reduction
the number of variables must be 3 for our purposestart
- multivariable polynomials over F_4 for q^0.maxpower
- till which power shall we compute?
givePower
public Poly4MultiLinear[] givePower(int which)
- Returns the polynomial vector for a given power which.
Can only return values which have been computed by the constructor.
testIt
public static void testIt()
- Tests the functionality of the class.
Is called by the main method.
main
public static void main(java.lang.String[] args)
- Calls the
testIt()
method