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Bouncy Castle Cryptography Library 1.49 | ||||||||
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java.lang.Objectorg.bouncycastle.pqc.math.ntru.polynomial.LongPolynomial2
public class LongPolynomial2
A polynomial class that combines two coefficients into one long
value for
faster multiplication in 64 bit environments.
Coefficients can be between 0 and 2047 and are stored in pairs in the bits 0..10 and 24..34 of a long
number.
Constructor Summary | |
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LongPolynomial2(IntegerPolynomial p)
Constructs a LongPolynomial2 from a IntegerPolynomial . |
Method Summary | |
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java.lang.Object |
clone()
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boolean |
equals(java.lang.Object obj)
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LongPolynomial2 |
mult(LongPolynomial2 poly2)
Multiplies the polynomial with another, taking the indices mod N and the values mod 2048. |
void |
mult2And(int mask)
Multiplies this polynomial by 2 and applies an AND mask to the upper and lower halves of each coefficients. |
void |
subAnd(LongPolynomial2 b,
int mask)
Subtracts another polynomial which must have the same number of coefficients, and applies an AND mask to the upper and lower halves of each coefficients. |
IntegerPolynomial |
toIntegerPolynomial()
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Methods inherited from class java.lang.Object |
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finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public LongPolynomial2(IntegerPolynomial p)
LongPolynomial2
from a IntegerPolynomial
. The two polynomials are independent of each other.
p
- the original polynomial. Coefficients must be between 0 and 2047.Method Detail |
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public LongPolynomial2 mult(LongPolynomial2 poly2)
public IntegerPolynomial toIntegerPolynomial()
public void subAnd(LongPolynomial2 b, int mask)
b
- another polynomialmask
- a bit mask less than 2048 to apply to each 11-bit coefficientpublic void mult2And(int mask)
mask
- a bit mask less than 2048 to apply to each 11-bit coefficientpublic java.lang.Object clone()
clone
in class java.lang.Object
public boolean equals(java.lang.Object obj)
equals
in class java.lang.Object
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Bouncy Castle Cryptography Library 1.49 | ||||||||
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