FieldElement - Javadocs [I2P+ 0.9.50]

java.lang.Object

net.i2p.crypto.eddsa.math.FieldElement

All Implemented Interfaces:: Serializable

Direct Known Subclasses:: BigIntegerFieldElement, Ed25519FieldElement

public abstract class FieldElement
extends Object
implements Serializable

Note: concrete subclasses must implement hashCode() and equals()

Since:: 0.9.15
See Also:: Serialized Form

Field Summary

Fields

Modifier and Type Field Description

protected Field f
Constructor Summary

Constructors

Constructor Description

FieldElement(Field f)

Method Summary

Modifier and Type	Method	Description
`abstract FieldElement`	`add(FieldElement val)`
`FieldElement`	`addOne()`
`abstract FieldElement`	`cmov(FieldElement val, int b)`
`FieldElement`	`divide(FieldElement val)`
`abstract FieldElement`	`invert()`
`boolean`	`isNegative()`
`abstract boolean`	`isNonZero()`
`abstract FieldElement`	`multiply(FieldElement val)`
`abstract FieldElement`	`negate()`
`abstract FieldElement`	`pow22523()`
`abstract FieldElement`	`square()`
`abstract FieldElement`	`squareAndDouble()`
`abstract FieldElement`	`subtract(FieldElement val)`
`FieldElement`	`subtractOne()`
`byte[]`	`toByteArray()`	Encode a FieldElement in its $(b-1)$-bit encoding.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details
- f
  
  protected final Field f
Constructor Details
- FieldElement
  
  public FieldElement(Field f)
Method Details
- toByteArray
  
  public byte[] toByteArray()
  
  Encode a FieldElement in its $(b-1)$-bit encoding.
  
  Returns:
  
  the $(b-1)$-bit encoding of this FieldElement.
- isNonZero
  
  public abstract boolean isNonZero()
- isNegative
  
  public boolean isNegative()
- add
  
  public abstract FieldElement add(FieldElement val)
- addOne
  
  public FieldElement addOne()
- subtract
  
  public abstract FieldElement subtract(FieldElement val)
- subtractOne
  
  public FieldElement subtractOne()
- negate
  
  public abstract FieldElement negate()
- divide
  
  public FieldElement divide(FieldElement val)
- multiply
  
  public abstract FieldElement multiply(FieldElement val)
- square
  
  public abstract FieldElement square()
- squareAndDouble
  
  public abstract FieldElement squareAndDouble()
- invert
  
  public abstract FieldElement invert()
- pow22523
  
  public abstract FieldElement pow22523()
- cmov
  
  public abstract FieldElement cmov(FieldElement val, int b)
  
  Since:
  
  0.9.36