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Bouncy Castle Cryptography Library 1.49 | ||||||||
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java.lang.Objectorg.bouncycastle.pqc.crypto.rainbow.Layer
public class Layer
This class represents a layer of the Rainbow Oil- and Vinegar Map. Each Layer consists of oi polynomials with their coefficients, generated at random.
To sign a document, we solve a LES (linear equation system) for each layer in order to find the oil variables of that layer and to be able to use the variables to compute the signature. This functionality is implemented in the RainbowSignature-class, by the aid of the private key. Each layer is a part of the private key. More information about the layer can be found in the paper of Jintai Ding, Dieter Schmidt: Rainbow, a New Multivariable Polynomial Signature Scheme. ACNS 2005: 164-175 (http://dx.doi.org/10.1007/11496137_12)
Constructor Summary | |
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Layer(byte vi,
byte viNext,
short[][][] coeffAlpha,
short[][][] coeffBeta,
short[][] coeffGamma,
short[] coeffEta)
Constructor |
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Layer(int vi,
int viNext,
java.security.SecureRandom sr)
This function generates the coefficients of all polynomials in this layer at random using random generator. |
Method Summary | |
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boolean |
equals(java.lang.Object other)
This function compares this Layer with another object. |
short[][][] |
getCoeffAlpha()
Getter for the alpha-coefficients of the polynomials in this layer. |
short[][][] |
getCoeffBeta()
Getter for the beta-coefficients of the polynomials in this layer. |
short[] |
getCoeffEta()
Getter for the eta-coefficients of the polynomials in this layer. |
short[][] |
getCoeffGamma()
Getter for the gamma-coefficients of the polynomials in this layer. |
int |
getOi()
Getter for the number of Oil variables of this layer. |
int |
getVi()
Getter for the number of vinegar variables of this layer. |
int |
getViNext()
Getter for the number of vinegar variables of the next layer. |
int |
hashCode()
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short[][] |
plugInVinegars(short[] x)
This method plugs in the vinegar variables into the polynomials of this layer and computes the coefficients of the Oil-variables as well as the free coefficient in each polynomial. |
Methods inherited from class java.lang.Object |
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clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public Layer(byte vi, byte viNext, short[][][] coeffAlpha, short[][][] coeffBeta, short[][] coeffGamma, short[] coeffEta)
vi
- number of vinegar variables of this layerviNext
- number of vinegar variables of next layer. It's the same as
(num of oils) + (num of vinegars) of this layer.coeffAlpha
- alpha-coefficients in the polynomials of this layercoeffBeta
- beta-coefficients in the polynomials of this layercoeffGamma
- gamma-coefficients in the polynomials of this layercoeffEta
- eta-coefficients in the polynomials of this layerpublic Layer(int vi, int viNext, java.security.SecureRandom sr)
sr
- the random generator which is to be usedMethod Detail |
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public short[][] plugInVinegars(short[] x)
x
- vinegar variables of this layer that should be plugged into
the polynomials.
public int getVi()
public int getViNext()
public int getOi()
public short[][][] getCoeffAlpha()
public short[][][] getCoeffBeta()
public short[][] getCoeffGamma()
public short[] getCoeffEta()
public boolean equals(java.lang.Object other)
equals
in class java.lang.Object
other
- the other object
public int hashCode()
hashCode
in class java.lang.Object
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Bouncy Castle Cryptography Library 1.49 | ||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |