Package org.bouncycastle.math.ec
Class ECFieldElement.Fp
- java.lang.Object
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- org.bouncycastle.math.ec.ECFieldElement
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- org.bouncycastle.math.ec.ECFieldElement.AbstractFp
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- org.bouncycastle.math.ec.ECFieldElement.Fp
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- All Implemented Interfaces:
ECConstants
- Enclosing class:
- ECFieldElement
public static class ECFieldElement.Fp extends ECFieldElement.AbstractFp
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Nested Class Summary
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Nested classes/interfaces inherited from class org.bouncycastle.math.ec.ECFieldElement
ECFieldElement.AbstractF2m, ECFieldElement.AbstractFp, ECFieldElement.F2m, ECFieldElement.Fp
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Constructor Summary
Constructors Constructor Description Fp(java.math.BigInteger q, java.math.BigInteger x)
Deprecated.Use ECCurve.fromBigInteger to construct field elements
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description ECFieldElement
add(ECFieldElement b)
ECFieldElement
addOne()
ECFieldElement
divide(ECFieldElement b)
boolean
equals(java.lang.Object other)
java.lang.String
getFieldName()
return the field name for this field.int
getFieldSize()
java.math.BigInteger
getQ()
int
hashCode()
ECFieldElement
invert()
protected java.math.BigInteger
modAdd(java.math.BigInteger x1, java.math.BigInteger x2)
protected java.math.BigInteger
modDouble(java.math.BigInteger x)
protected java.math.BigInteger
modHalf(java.math.BigInteger x)
protected java.math.BigInteger
modHalfAbs(java.math.BigInteger x)
protected java.math.BigInteger
modInverse(java.math.BigInteger x)
protected java.math.BigInteger
modMult(java.math.BigInteger x1, java.math.BigInteger x2)
protected java.math.BigInteger
modReduce(java.math.BigInteger x)
protected java.math.BigInteger
modSubtract(java.math.BigInteger x1, java.math.BigInteger x2)
ECFieldElement
multiply(ECFieldElement b)
ECFieldElement
multiplyMinusProduct(ECFieldElement b, ECFieldElement x, ECFieldElement y)
ECFieldElement
multiplyPlusProduct(ECFieldElement b, ECFieldElement x, ECFieldElement y)
ECFieldElement
negate()
ECFieldElement
sqrt()
return a sqrt root - the routine verifies that the calculation returns the right value - if none exists it returns null.ECFieldElement
square()
ECFieldElement
squareMinusProduct(ECFieldElement x, ECFieldElement y)
ECFieldElement
squarePlusProduct(ECFieldElement x, ECFieldElement y)
ECFieldElement
subtract(ECFieldElement b)
java.math.BigInteger
toBigInteger()
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Methods inherited from class org.bouncycastle.math.ec.ECFieldElement
bitLength, getEncoded, isOne, isZero, squarePow, testBitZero, toString
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Method Detail
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toBigInteger
public java.math.BigInteger toBigInteger()
- Specified by:
toBigInteger
in classECFieldElement
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getFieldName
public java.lang.String getFieldName()
return the field name for this field.- Specified by:
getFieldName
in classECFieldElement
- Returns:
- the string "Fp".
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getFieldSize
public int getFieldSize()
- Specified by:
getFieldSize
in classECFieldElement
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getQ
public java.math.BigInteger getQ()
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add
public ECFieldElement add(ECFieldElement b)
- Specified by:
add
in classECFieldElement
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addOne
public ECFieldElement addOne()
- Specified by:
addOne
in classECFieldElement
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subtract
public ECFieldElement subtract(ECFieldElement b)
- Specified by:
subtract
in classECFieldElement
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multiply
public ECFieldElement multiply(ECFieldElement b)
- Specified by:
multiply
in classECFieldElement
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multiplyMinusProduct
public ECFieldElement multiplyMinusProduct(ECFieldElement b, ECFieldElement x, ECFieldElement y)
- Overrides:
multiplyMinusProduct
in classECFieldElement
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multiplyPlusProduct
public ECFieldElement multiplyPlusProduct(ECFieldElement b, ECFieldElement x, ECFieldElement y)
- Overrides:
multiplyPlusProduct
in classECFieldElement
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divide
public ECFieldElement divide(ECFieldElement b)
- Specified by:
divide
in classECFieldElement
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negate
public ECFieldElement negate()
- Specified by:
negate
in classECFieldElement
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square
public ECFieldElement square()
- Specified by:
square
in classECFieldElement
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squareMinusProduct
public ECFieldElement squareMinusProduct(ECFieldElement x, ECFieldElement y)
- Overrides:
squareMinusProduct
in classECFieldElement
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squarePlusProduct
public ECFieldElement squarePlusProduct(ECFieldElement x, ECFieldElement y)
- Overrides:
squarePlusProduct
in classECFieldElement
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invert
public ECFieldElement invert()
- Specified by:
invert
in classECFieldElement
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sqrt
public ECFieldElement sqrt()
return a sqrt root - the routine verifies that the calculation returns the right value - if none exists it returns null.- Specified by:
sqrt
in classECFieldElement
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modAdd
protected java.math.BigInteger modAdd(java.math.BigInteger x1, java.math.BigInteger x2)
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modDouble
protected java.math.BigInteger modDouble(java.math.BigInteger x)
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modHalf
protected java.math.BigInteger modHalf(java.math.BigInteger x)
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modHalfAbs
protected java.math.BigInteger modHalfAbs(java.math.BigInteger x)
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modInverse
protected java.math.BigInteger modInverse(java.math.BigInteger x)
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modMult
protected java.math.BigInteger modMult(java.math.BigInteger x1, java.math.BigInteger x2)
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modReduce
protected java.math.BigInteger modReduce(java.math.BigInteger x)
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modSubtract
protected java.math.BigInteger modSubtract(java.math.BigInteger x1, java.math.BigInteger x2)
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equals
public boolean equals(java.lang.Object other)
- Overrides:
equals
in classjava.lang.Object
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hashCode
public int hashCode()
- Overrides:
hashCode
in classjava.lang.Object
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